<PAGE>
 
Prepared by and upon                                                 EXHIBIT 4.2
recordation please return to:
Gray H. Muzzy
Bracewell & Patterson, L.L.P.
711 Louisiana, Suite 2900
Houston, Texas 77002



                      ACT OF MORTGAGE, SECURITY AGREEMENT,
                          ASSIGNMENT OF PRODUCTION AND
                              FINANCING STATEMENT



THE STATE OF TEXAS       (S)
                         (S)
COUNTY  OF  HARRIS       (S)


     Be it known that on this 21st day of November, 1996, before me, the
undersigned Notary Public, duly commissioned and qualified in and for the County
and State aforesaid, and therein residing, and in the presence of the
undersigned competent witnesses, whose names are subscribed hereto,

     Personally came and appeared FORMAN PETROLEUM CORPORATION, a Louisiana
     corporation, whose federal tax identification number is 72-0954774 with a
     mailing address of 650 Poydras Street, Suite 2200, New Orleans, Louisiana,
     70130-6101 appearing herein through Marvin J. Gay, its duly authorized
     Treasurer, acting pursuant to resolutions of the Board of Directors of such
     corporation, a certified extract of which are attached hereto
     ("Mortgagor"),

which Mortgagor through its representative declared unto me, Notary, as follows:

                                   ARTICLE I
                                  DEFINITIONS
                                  -----------

        Mortgagor agrees that, as used in this instrument, the following terms
shall have the following meanings:

        1.1  "COLLATERAL" means the Realty Collateral, Personalty Collateral and
Immovable Collateral, all proceeds thereof (including without limitation the
right to receive insurance 
<PAGE>
 
proceeds attributable to the loss of any portion of the foregoing), and
products, renewals, increases, profits, substitutions, replacements, additions,
amendments and accessions thereof, thereto or therefor.

        1.2  "CONTRACTS" means all contracts, operating agreements, farm-out or
farm-in agreements, sharing agreements, mineral purchase agreements, rights-of-
way, servitudes, ease  ments, surface leases, permits, franchises, licenses,
pooling, communitization or unitization agreements, unit designations and
pooling orders now in effect or hereafter entered into by Mortgagor affecting
any of the Oil and Gas Properties, Operating Equipment, Immovable Collateral, or
Hydrocarbons now, or hereafter covered hereby, or which are useful or
appropriate in drilling for, producing, treating, handling, storing,
transporting or marketing oil, gas or other minerals produced from any of the
property affected by the Oil and Gas Properties.

        1.3  "DEFAULT RATE" means a rate of interest equal to the lesser of 18%
per annum or the Maximum Rate.

        1.4       "ENGINEERING REPORT" means that certain report prepared by
Ryder Scott Company for Mortgagor dated July 1, 1996, titled Estimated Future
Reserves and Income Attributable to Certain Leasehold and Royalty Interests in
Boutte Field, Lake Enfermer Field and Manila Village Field.

        1.5  "EVENT OF DEFAULT" shall have the meaning set forth in Article 5.1
hereof.

        1.6  "HAZARDOUS MATERIALS" means any flammable explosives, radioactive
materials, hazardous wastes, hazardous materials, hazardous or toxic substances,
or related materials as defined in the Comprehensive Environmental Response,
Compensation and Liability Act of 1980, as amended (42 U.S.C. (S) 9601 et seq.),
the Hazardous Materials Transportation Act, as amended (49 U.S.C. (S) 1801 et
seq.) the Resource Conservation and Recovery Act, as amended (42 U.S.C. (S) 6901
et seq.), and in the regulations adopted and publications promulgated pursuant
thereto, and all asbestos (friable or non-friable), petroleum derivatives,
polychlorinated biphenyls, and substances defined as hazardous materials under
any federal, state or local laws, ordinances, codes, rules, orders, regulations
or policies governing the use, storage, treatment, transportation, manufacture,
refinement, handling, production or disposal thereof.

        1.7  "HYDROCARBONS" means the oil, gas, casinghead gas, other liquid or
gaseous hydrocarbons and all other minerals in and under or attributable to and
that may be produced, obtained or secured from, the lands covered and affected
by the Oil and Gas Properties, and all products refined therefrom.

        1.8  "IMMOVABLE COLLATERAL" means all of Mortgagor's interests now owned
or hereafter acquired in and to all Immovable Operating Equipment and all
proceeds, products, 

                                      -2-
<PAGE>
 
renewals, increases, profits, substitutions, replacements, additions, amendments
and accessions thereof, thereto or therefor.

        1.9  "IMMOVABLE OPERATING EQUIPMENT" means any of the items described in
the first sentence of paragraph 1.17 which as a result of being incorporated
into realty or structures or improvements located therein or thereon, constitute
immovables under the laws of the State of Louisiana.

        1.10  "LENDER" means Joint Energy Development Investments Limited
Partnership, a Delaware limited Partnership, whose Federal tax identification
number is 76-0407964, with offices at 1400 Smith Street, Houston, Texas 77002,
herein represented by Wynne M. Snoots, Jr., Agent and Attorney-in-Fact on behalf
of Enron Capital Corp., the General Partner of the Lender.

        1.11  "MAXIMUM RATE" is defined in Article 6.6.

        1.12  "MORTGAGE" means this Act of Mortgage, Security Agreement,
Assignment of Production and Financing Statement, as it may be amended, modified
or supplemented from time to time.

        1.13  "MORTGAGEE" means the Lender, its successors and assigns, and any
legal owner, holder, assignee or pledgee of any of the Obligations secured
hereby.

        1.14  "NOTE" means that certain promissory note of Mortgagor payable to
the order of the Lender in the original principal amount of $4,000,000.00, dated
of even date herewith, and all modifications, amendments, renewals and
extensions thereof.

        1.15  "OBLIGATIONS" means (a)  the indebtedness evidenced by the Note in
the principal amount and with interest, collection and attorney's fees, all as
provided therein; all renewals, modifications, rearrangements or extensions of
the Note, in whole or in part; any sums which may be advanced or paid by
Mortgagee under the terms hereof on account of the failure of Mortgagor to
comply with the covenants of Mortgagor contained herein; and all other
indebtedness of Mortgagor arising pursuant to the provisions of this Mortgage,
(b) all promissory notes evidencing additional loans which Mortgagee may
hereafter make to Mortgagor, it being anticipated that Mortgagee may make such
additional loans (without having any obligation to do so); (c) all other
indebtedness and liabilities of all kinds of Mortgagor to Mortgagee now existing
or hereafter arising, whether fixed or contingent, joint or several, direct or
indirect, primary or secondary, and regardless of how created or evidenced; (d)
all sums advanced or costs or expenses incurred by Mortgagee, which are made or
incurred pursuant to, or allowed by, the terms of this instrument or any other
instrument executed in connection with the Note, including but not limited to
all legal fees and all engineering and other costs incurred in connection with
Mortgagee's due diligence, plus interest thereon from the date of the advance

                                      -3-
<PAGE>
 
until reimbursement of Mortgagee charged at the Default Rate; (e) all renewals,
extensions, amendments and substitutions of the above whether or not Mortgagor
executes any renewal or extension agreement, any amounts due and payable by
Mortgagor to ECT Securities Corp. and (f) any amounts due and payable by
Mortgagor to Mortgagee under any swap or hedge agreement.

        1.16  "OIL AND GAS PROPERTY OR PROPERTIES" means (a) the oil, gas and/or
mineral leases, mineral estates, mineral servitudes, subleases, farm outs,
royalties, overriding royalties, net profits interests, production payments and
similar mineral interests described in Exhibit A attached hereto and made a part
hereof for all purposes, (b) any wells, production unit or units and wells which
may affect all or any portion of such mineral interests including, without
limitation, those units which may be described or referred to on Exhibit A or
any unit created under orders, regulations, rules or other official acts of any
Federal, state or other governmental body or agency having jurisdiction, (c) any
other interest in, to or relating to (i) all or any part of the land or leases
described in Exhibit A or (ii) any of the estates, property rights or other
interests referred to above, and (d) any instrument executed in amendment,
correction, modifica  tion, confirmation, renewal or extension of the same.

        1.17  "OPERATING EQUIPMENT" means all surface or subsurface machinery,
fixtures, equipment, facilities, supplies or other property of whatsoever kind
or nature (excluding drilling rigs, trucks, automotive equipment or other
property taken to the premises to drill a well or for other similar temporary
uses) now or hereafter located on or attributable to any of the property
affected by the Oil and Gas Properties which are useful for the production,
treatment, storage or transportation of Hydrocarbons, including, but not limited
to, all oil wells, gas wells, water wells, injection wells, casing, tubing,
rods, pumping units and engines, christmas trees, derricks, separators, gun
barrels, flow lines, tanks, gas systems (for gathering, treating and
compression), water systems (for treating, disposal and injection), power
plants, poles, lines, transformers, starters and controllers, machine shops,
tools, storage yards and equipment stored therein, buildings and camps,
telegraph, telephone and other communication systems, roads, loading racks and
shipping facilities.  Operating Equipment shall not include any items
incorporated into realty or structures or improvements located therein or
thereon in such a manner that they constitute immovables under the laws of the
State of Louisiana.

        1.18  "PERSONALTY COLLATERAL" means all of Mortgagor's interest now
owned or hereafter acquired in and to (i) all Operating Equipment, (ii) all
Hydrocarbons severed and extracted from or attributable to the Oil and Gas
Properties, including oil in tanks, (iii) all accounts (including, but not
limited to, accounts resulting from the sale of Hydrocarbons at the wellhead),
contract rights and general intangibles now or hereafter arising in connection
with the sale or other disposition of any Hydrocarbons, (iv) all Contracts and
all general intangibles now or hereafter arising in connection with or resulting
from Contracts, (v) all proceeds and products of the Realty Collateral and/or
Immovable Collateral, and (vi) all rents, issues, 

                                      -4-
<PAGE>
 
proceeds, products, renewals, increases, profits, substitutions, replacements,
additions, amendments and accessions of, to or for all of the property described
in this subparagraph.

        1.19  "REALTY COLLATERAL" means all of Mortgagor's interest now owned or
hereafter acquired, legal or beneficial in and to the Oil and Gas Properties and
all unsevered and unextracted Hydrocarbons (even though Mortgagor's interest
therein be incorrectly described in, or a description of a part or all such
interest be omitted from, Exhibit A).

        1.20  "UNIFORM COMMERCIAL CODE" OR "UCC" shall have the meaning set 
forth in Section 5.3.

                                   ARTICLE II
                  CREATION OF PRIVILEGE AND SECURITY INTEREST
                  -------------------------------------------

        2.1  MORTGAGE AND PLEDGE.  In order to secure the full and punctual
payment and performance of the Obligations, and the performance of the covenants
and obligations contained herein, Mortgagor does by these presents specially
mortgage, pledge, assign, hypothecate and warrant unto and in favor of
Mortgagee, for itself and as collateral agent on behalf of ECT Securities Corp.
and any holder of Obligations described in clause (f) of the definition of
Obligations, the Realty Collateral and Immovable Collateral, together with the
right to receive insurance proceeds attributable to the insurance loss of such
property (as provided in LSA R.S. 9:5386).

        2.2  SECURITY INTEREST.  For the same consideration and to further
secure the Obligations, Mortgagor hereby grants to Mortgagee for itself and as
collateral agent on behalf of ECT Securities Corp. and any holder of Obligations
described in clause (f) of the definition of Obligations, a security interest in
and to the Personalty Collateral and the Immovable Collateral.

        2.3  FUTURE ADVANCES.  This Mortgage secures all future advances and
obligations constituting Obligations.  The total amount of Obligations secured
by this instrument (including without limitation as a mortgage and as an
assignment, and including without limitation all advances and Default Rate
interest hereunder) may decrease or increase from time to time, but at no time
shall the total amount of Obligations secured hereby exceed the sum of
$100,000,000.

                                      -5-
<PAGE>
 
                                  ARTICLE III
                            PROCEEDS FROM PRODUCTION
                            ------------------------

   3.1  ASSIGNMENT OF PRODUCTION.
        ------------------------ 

        (a) Mortgagor, in order to further secure the Obligations, up to the
   maximum amount provided above in Section 2.3, effective as of the date hereof
   at 7:00 a.m. Central Time, U.S.A., has assigned, transferred, conveyed and
   delivered and does hereby assign, transfer, convey and deliver unto Mortgagee
   for itself and as collateral agent on behalf of ECT Securities Corp. and any
   holder of Obligations described in clause (f) of the definition of
   Obligations, Mortgagor's interest, now owned or hereafter acquired, in and to
   the Hydrocarbons (or the proceeds therefrom), the same to be delivered into
   pipelines connected to the Oil and Gas Properties, or to any other purchaser
   thereof to the credit of Mortgagee.

        (b) All parties producing, purchasing, taking, possessing, processing or
   receiving any production from the Oil and Gas Properties, or having in their
   possession any such production or the proceeds of runs for which they or
   others are accountable to Mortgagee by virtue of the provisions of this
   Article 3.1, are authorized and directed by Mortgagor to treat and regard
   Mortgagee as the assignee and transferee of Mortgagor and entitled in its
   place and stead to receive Mortgagor's interest, now owned or hereafter
   acquired, in and to the Hydrocarbons and the proceeds thereof.

        (c) Mortgagor directs and instructs each purchaser of production from
   the Oil and Gas Properties to pay to Mortgagee all of the proceeds of
   Mortgagor's interest, now owned or hereafter acquired, in and to the
   Hydrocarbons until such time as such purchaser has been furnished evidence
   that all of the Obligations have been paid and that the privilege evidenced
   hereby has been released.  Mortgagor authorizes Mortgagee to receive and
   collect all sums of money derived from the proceeds of all of Mortgagor's
   interest, now owned or hereafter acquired in and to the Hydrocarbons, and no
   purchaser of any production from the Oil and Gas Properties shall have any
   responsibility for the application of any funds paid to Mortgagee.

        (d) Mortgagee may (i) endorse and cash any and all checks and drafts
   payable to the order of Mortgagor or Mortgagee for the account of Mortgagor,
   received from or in connection with the revenues and proceeds of the
   Hydrocarbons affected hereby, and the same may be applied as provided herein
   and (ii) execute any transfer or division orders in the name of Mortgagor or
   otherwise, with warrants and indemnities binding on Mortgagor; provided that
   Mortgagee shall not be held liable for, nor be required to verify, the
   accuracy of Mortgagor's interests as represented therein.

                                      -6-
<PAGE>
 
        (e) Mortgagee shall have the right at Mortgagee's election and in the
   name of Mortgagor, or otherwise, to prosecute and defend any and all actions
   or legal proceed  ings deemed advisable by Mortgagee in order to collect such
   funds and to protect the interests of Mortgagee and/or Mortgagor, with all
   reasonable costs, expenses and attor  neys fees incurred in connection
   therewith being paid by Mortgagor.

        (f) The foregoing provisions of this Section 3.1 shall constitute an
   absolute and present assignment of all Mortgagor's interest in the
   Hydrocarbons.  Mortgagee grants to Mortgagor a conditional license to receive
   and sell such Hydrocarbons, and the proceeds therefrom, and to use the same
   in accordance with the terms of this Mortgage until Mortgagee delivers
   written notice to Mortgagor that Mortgagee has elected to terminate such
   license at which time such conditional license shall terminate without
   further notice or action on the part of Mortgagee.  The existence or exercise
   of such conditional license shall not operate to subordinate this assignment,
   in whole or in part, to any subsequent assignment by Mortgagor permitted
   hereunder, and any such subsequent assignment by Mortgagor shall be subject
   to the rights of Mortgagee hereunder.

        3.2  APPLICATION OF PROCEEDS.  All payments received by Mortgagee
pursuant to this Article III shall either be held by Mortgagee in a cash
collateral account as additional Collateral or, at the option of Mortgagee,
applied at the time of receipt, or from time to time at the discretion of
Mortgagee if held in such cash collateral account, as follows:

        (a) First, to the satisfaction of all costs and expenses incurred in
   connection with the collection of such proceeds, and the payment of any part
   of the Obligations not represented by a written instrument;

        (b) Second, to the payment of all accrued interest on the Obligations;

        (c) Third, to the payment of any then due and owing principal
   constituting part of the Obligations;  and

        (d) The balance, if any, shall be released to Mortgagor, if not retained
   by Mortgagee in the cash collateral account.

        3.3  RELEASE OF PROCEEDS.  Mortgagee or any future Mortgagee or
Mortgagees may at any time and from time to time release to Mortgagor or its
order all or any portion of the funds received from the proceeds of oil, gas or
other minerals as provided in this Article III without in any wise impairing,
releasing or discharging the lien, privilege and security of this instrument,
and the pledge and assignment herein provided for or affecting the validity
thereof.

                                      -7-
<PAGE>
 
        3.4  MORTGAGOR'S PAYMENT DUTIES.  Nothing contained herein will limit
Mortgagor's absolute duty to make payment of the Obligations when the proceeds,
if any, received by Mortgagee pursuant to this Article are insufficient to pay
the same, and the receipt of proceeds under this Article will be in addition to
all other security now or hereafter existing to secure payment of the
Obligations.

        3.5  LIABILITY OF MORTGAGEE.  Mortgagee is hereby absolved from all
liability for failure to enforce collection of any of such proceeds, and from
all other responsibility in connec  tion therewith except the responsibility to
account to Mortgagor for proceeds actually received by Mortgagee.

        3.6  INDEMNIFICATION.  Mortgagor agrees to indemnify Mortgagee against
all claims, actions, liabilities, judgments, costs, attorneys fees or other
charges of whatsoever kind or nature (hereafter referred to in this Article as
"Claims") made against or incurred by Mortgagee as a consequence of the
assertion either before or after the payment in full of the Obligations, that
Mortgagee received Hydrocarbons or proceeds pursuant to this Article III which
were claimed by third persons.  Mortgagee will have the right to employ
attorneys and to defend against any such Claims and unless furnished with
reasonable indemnity, Mortgagee will have the right to pay or compromise and
adjust all such Claims.  Mortgagor will indemnify and pay to Mortgagee all such
amounts as may be paid in respect thereof, or as may be successfully adjudicated
against Mortgagee and all such amounts shall be a part of the Obligation secured
by this instrument.  The liabilities of Mortgagor as set forth in this Article
will survive the termination of this instrument.

                                   ARTICLE IV
                      MORTGAGOR'S WARRANTIES AND COVENANTS
                      ------------------------------------

        4.1  PAYMENT AND PERFORMANCE OF OBLIGATIONS.  Mortgagor covenants and
agrees that Mortgagor shall punctually pay when due all interest and principal
comprising the Obliga  tions secured by this instrument and all other amounts
and indebtedness secured and to be secured hereby and will perform all of the
terms, covenants and provisions of any loan or other agreement entered into by
Mortgagor and Mortgagee in connection herewith.

        4.2  WARRANTIES.  Mortgagor warrants as follows:

        (a) Mortgagor has good and marketable title to the Collateral free from
   all liens, security interests or other encumbrances except as specifically
   permitted by the provisions of Article 4.4(h) below.  Notwithstanding
   anything contained in Exhibit A to the contrary, Mortgagor's ownership of the
   Oil and Gas Properties and the undivided interests therein as specified will
   afford Mortgagor not less than those net interests in the production from the
   Collateral  (or properties now or hereafter pooled or unitized therewith), or
   production which is allocated to such Oil and Gas Properties, and (ii) will

                                      -8-
<PAGE>
 
   cause Mortgagor to bear not more than that portion of the costs of drilling,
   developing and operating such leases, than those set forth in the Engineering
   Report; none of the Collateral is subject to a production sales contract;
   none of the Collateral is subject at present to any regulatory refund
   obligation and to Mortgagor's knowledge no facts exist which might cause the
   same to be imposed;

        (b) Mortgagor has the full power, authority and legal right to execute
   the Note and any and all other instruments entered into in connection
   therewith, to perform the Obligations and to mortgage, pledge, assign and
   hypothecate the Collateral to Mortgagee without the consent of any person and
   has all licenses, permits, qualifications and other documentation necessary
   or appropriate to own, and if Mortgagor is the operator of any of the
   Collateral, to operate the Collateral.  Mortgagor (a) is a corporation
   validly existing and in good standing under the laws of the State of
   Louisiana; (b) has all requisite authority to conduct its business and own
   and lease its properties; (c) is qualified and in good standing in every
   jurisdiction in which the nature of its business makes qualification
   necessary or where failure to qualify could have a material adverse effect on
   its financial condition or the performance of its obligations under the Note
   and this Mortgage.   Mortgagor is in compliance in all respects with all laws
   and requirements applicable to its business, the violation of which might
   materially affect its obligations hereunder, and has obtained all approvals,
   licenses, exemptions and other authorizations from, and has accomplished all
   filings, registrations and qualifications with, any governmental agency that
   are necessary for the transaction of its business.

        (c) The representations of Mortgagor as to quantum and nature of the
   interest of Mortgagor in and to the Oil and Gas Properties set forth in the
   Engineering Report includes the entire interest of Mortgagor in the Oil and
   Gas Properties and are complete and accurate in all respects.  There are no
   "back-in" or "reversionary" interests held by third parties which could
   reduce the interest of Mortgagor in the Oil and Gas Properties except as
   expressly set forth in the Engineering Report.

        (d) Except as permitted by Article 4.4(h) below or as otherwise
   disclosed in writing prior to the date hereof, Mortgagor has not received any
   notice of any claim of lien, privilege, right, title or interest to any of
   the Collateral from any third party and Mortgagor does not have any knowledge
   of any facts, circumstances or conditions which could, by lapse of time or
   otherwise, result in any claim of right, title, privilege, lien or interest
   by any third party in or to the Collateral.

        (e) There are no prior consent rights or preferential purchase rights in
   third parties affecting any part of the Collateral.

                                      -9-
<PAGE>
 
        (f) No operating or other agreement to which Mortgagor is a party or by
   which Mortgagor is bound affecting any part of the Collateral requires
   Mortgagor to bear any of the costs relating to the Collateral greater than
   the leasehold interest of Mortgagor in such portion of the Collateral, except
   in the event Mortgagor is obligated under an operating agreement to assume a
   portion of a defaulting or non-consenting party's share of costs.

        (g) Mortgagor has not received any prepayment prior to the date hereof
   under any agreement providing for the sale by Mortgagor of Hydrocarbons which
   agree  ment contains a "take or pay" clause or similar arrangement that
   obligates Mortgagor to deliver Hydrocarbons at some future time without then
   or thereafter receiving full payment therefor.

        (h) Mortgagor is not obligated to "make up" any deliveries of oil or gas
   to any third party out of the production from any of the Oil and Gas
   Properties.

        (i) No approval or consent of any person or of any regulatory or
   administrative commission or authority or of any other governmental body is
   necessary under any existing laws or regulations (A) to authorize the
   execution and delivery of this instrument or of any written instruments
   constituting part or all of the Obligations or (B) except as may be provided
   by the rules of the Louisiana Department of Conservation or the relative
   state regulatory authority having jurisdiction over oil and gas operations in
   Louisiana, to authorize the observance or performance by Mortgagor of the
   covenants contained in this instrument or in the written instruments
   constituting all or part of the Obligations.

        (j) To the best of Mortgagor's knowledge, after due inquiry and
   investigation, all information and other data contained in statements or
   reports furnished to Mortgagee by or on behalf of Mortgagor relating to the
   Collateral was complete and accurate when made or delivered to Mortgagee and
   did not omit to state any material facts necessary to make the information
   contained therein not misleading.

        (k) Each oil and gas lease constituting a portion of the Collateral is
   valid and subsisting, all covenants, conditions and obligations contained in
   each such oil and gas lease and any assignments or agreements relating
   thereto have been fully performed and complied with in all material respects,
   and there exists no unsatisfied demand or dispute between Mortgagor and any
   lessor or any party to any such assignment or agreement.

        (l) All proceeds from the sale of Mortgagor's interest in the
   Hydrocarbons are currently being paid in full to Mortgagor by the purchaser
   thereof on a timely basis and none of such proceeds are currently being held
   in suspense by such purchaser or any other party.

                                      -10-
<PAGE>
 
        (m) The operation of the Oil and Gas Properties and the sale,
   processing, transportation and marketing of Hydrocarbons has been and is
   currently being conducted in accordance with all applicable federal, state
   and local laws, rules, regulations, orders and ordinances including without
   limitation all applicable local, state and federal environmental laws,
   regulations, ordinances and administrative and judicial orders relating to
   the generation, recycling, reuse, sale, storage, handling, transport and
   disposal of any Hazardous Materials.

        (n) There is no pending or, to the best knowledge of Mortgagor,
   threatened claim, suit, judicial or administrative action or proceeding which
   involves or may involve the Collateral or any part thereof or the production
   of Hydrocarbons which, if adversely determined to Mortgagor, could have a
   material adverse effect on the Collateral or the ability of Mortgagor to
   perform its obligations under this instrument.

        (o) All taxes, assessments, and governmental charges imposed upon the
   Collateral or upon the income and profit of the Collateral have been paid
   when due.

        (p) The proceeds of the Note shall be used to satisfy all outstanding
   trade payables of Mortgagor that are more than ninety (90) days past due.
   Upon funding of the proceeds of the Note, there shall exist no trade payables
   that are more than ninety (90) days past due.

        (q) Mortgagor's federal taxpayer identification number is accurately
   stated on page one of this instrument.

        (r) The address of Mortgagor's place of business, residence, chief
   executive office and office where Mortgagor keeps its records concerning
   accounts, contract rights and general intangibles is as set forth in Article
   6.12, and there has been no change in the location of Mortgagor's place of
   business, residence, chief executive office and office where it keeps such
   records and no change of Mortgagor's name during the four months immediately
   preceding the date of this instrument.

        4.3  FURTHER ASSURANCES.
             ------------------ 

        (a) Mortgagor covenants that Mortgagor shall execute and deliver such
   other and further instruments, and shall do such other and further acts as in
   the opinion of Mortgagee may be necessary or desirable to carry out more
   effectively the purposes of this instrument, including, without limiting the
   generality of the foregoing, the following:

                                      -11-
<PAGE>
 
             (i)   Prompt correction of any defect in the execution or acknowl-
   edgment of this instrument, any written instrument comprising part or all of
   the Obligations, or any other document used in connection herewith.

             (ii)  Prompt correction of any defect which may hereafter be
   discovered in the title to the Collateral.

             (iii) To indemnify and hold Mortgagee harmless from and against any
   and all costs and expenses, including, but not limited to, any and all cost,
   expense, loss, damage or liability which Mortgagee may suffer or incur by
   reason of the failure of title to all or part of the Collateral or by reason
   of the failure or inability of Mortgagor, for any reason, to convey the
   rights, titles and interest which this instrument purports to mortgage,
   pledge, hypothecate, convey, grant or assign.

             (iv)  Prompt execution and delivery of all division or transfer
   orders or other instruments which in Mortgagee's opinion are required to
   transfer to Mortgagee the proceeds from the sale of all of the Mortgagor's
   interest in and to all Hydrocarbons.

             (v)   Prompt payment when due and owing of all taxes, assessments
   and governmental charges imposed on this instrument, upon the interest of
   Mortgagee or upon the income and profits from any of the above.

        (b) Mortgagor covenants that Mortgagor shall maintain and preserve the
   first and prior  privilege, lien and security interest herein created so long
   as any of the Obligations remain unpaid.

        (c) Mortgagor covenants to immediately notify Mortgagee of any
   discontinuance of or change in the address of Mortgagor's place of business,
   residence, chief executive office or office where it keeps records concerning
   accounts, contract rights and general intangibles.

        (d) Mortgagor covenants that all information to be furnished to
   Mortgagee by or on behalf of Mortgagor shall be complete and accurate when
   made.

        (e) Mortgagor covenants to maintain its existence and continue to be a
   corporation in good standing in the states of Texas and Louisiana.

        (f) Mortgagor covenants to not permit any sale, assignment, pledge,
   merger or transfer of any interest or beneficial interest in Mortgagor, as
   the case may be, without the prior written consent of Mortgagee;

                                      -12-
<PAGE>
 
        (g) Mortgagor covenants to not create, assume, incur, suffer to exist or
   in any manner become liable, directly, indirectly, or contingently in respect
   to any debt other than the following:

             (i)    debt owed to the Mortgagee;

             (ii)   debt currently outstanding to Endowment Energy Partners,
             L.P., a Delaware limited partnership and Endowment Energy Co-
             Investment Partnership, a Delaware general partnership
             (collectively referred to herein as the "Endowment") which shall
             not exceed $36,000,000;

             (iii)  debt in the form of accounts payable to trade creditors for
             goods or services which are not aged more than ninety (90) days
             from the billing date and current operating liabilities (other than
             for borrowed money) which are not more than ninety (90) days past
             due, and each case incurred in the ordinary course of business, as
             presently conducted, and paid within the specified time, unless
             contested in good faith and by appropriate proceedings; and

        (h) Mortgagor covenants to not make any distributions to its
   shareholders; and/or not make any advances to or investments in Mortgagor's
   subsidiaries or affiliates without the prior written consent of Mortgagee.

        4.4  OPERATION OF OIL AND GAS PROPERTIES.  As long as any of the
Obligations remain unpaid or unsatisfied, and whether or not Mortgagor is the
operator of the Oil and Gas Properties, Mortgagor shall (at Mortgagor's own
expense):

        (a) not enter into any operating agreement, contract or agreement which
   materially adversely affects the Collateral;

        (b) neither abandon, forfeit, surrender, release, sell, assign,
   sublease, farmout or convey, nor agree to sell, assign, sublease, farmout or
   convey, nor mortgage or grant a privilege or security interest in, nor
   otherwise dispose of or encumber any of the Collateral or any interest
   therein, except for releases of leases which have expired by their own terms,
   reassignments under existing contract provisions, or the sale of Hydro
   carbons in the ordinary course of business, and transactions otherwise
   permitted in writing by Mortgagee;

        (c) cause the Collateral to be maintained, developed and protected
   against drainage and continuously operated for the production and marketing
   of Hydrocarbons in a good and workmanlike manner as a prudent operator would
   in accordance with 

                                      -13-
<PAGE>
 
   generally accepted practices, applicable oil and gas leases and Contracts,
   and all applicable Federal, state and local laws, rules and regulations,
   including all environmental laws;

        (d) promptly pay or cause to be paid when due and owing (i) all rentals
   and royalties payable in respect of the Collateral; (ii) all expenses
   incurred in or arising from the operation or development of the Collateral;
   (iii) all taxes, assessments and governmental charges imposed upon the
   Collateral, upon the income and profits from any of the Collateral, or upon
   Mortgagee because of its interest therein; and (iv) all local, state and
   federal taxes, payments and contributions for which Mortgagor may be liable;
   and indemnify Mortgagee from all liability in connection with any of the
   foregoing;

        (e) promptly take all action necessary to enforce or secure the
   observance or performance of any term, covenant, agreement or condition to be
   observed or performed by third parties under any Contract, or any part
   thereof, or to exercise any of its rights, remedies, powers and privileges
   under any Contract, all in accordance with the respective terms thereof;

        (f) cause the Operating Equipment and the Immovable Collateral to be
   kept in good and effective operating condition, and cause to be made all
   repairs, renewals, replacements, additions and improvements thereof or
   thereto, necessary or appropriate in connection with the production of
   Hydrocarbons from the Oil and Gas Properties;

        (g) permit and do all things necessary or proper to enable Mortgagee
   (through its agents and employees) to enter upon the Oil and Gas Properties
   for the purpose of investigating and inspecting the condition and operations
   of the Collateral whenever they so desire;

        (h) cause the Collateral to be kept free and clear of liens, privileges,
   charges, security interests and encumbrances of every character other than
   liens:

            (i) for taxes, assessments or other governmental charges on the
      Collateral if the same shall be inchoate, or are being contested in good
      faith and by appropriate proceedings and with respect to which reserves in
      conformity with generally accepted accounting principles have been
      provided on the books of the Mortgagor;

            (ii)  imposed by law, such as carriers', warehousemen's and
      mechanics' liens and other similar liens arising in the ordinary course of
      business which are inchoate or are being contested in good faith and by
      appropriate proceeding and with respect to which adequate reserves have
      been provided;

                                      -14-
<PAGE>
 
            (iii) arising under operating agreements that are described in
   Exhibit A and are inchoate or are being contested in good faith and by
   appropriate proceedings and with respect to which adequate reserves have been
   provided;

            (iv)  A subordinate lien and security interest created pursuant to
   the following: Those various Acts of Collateral Mortgages identified in
   Exhibit "A" to a Subordination of Mortgage dated November 20, 1996, executed
   by the Endowment for the benefit of Mortgagee (the "Endowment Liens");

            (v)   in favor of the Mortgagee pursuant to this instrument;

            (vi)  predial servitudes, restrictions and other similar
   encumbrances that, in the aggregate, do not materially interfere with the
   use, operation or ownership of the property subject thereto or materially
   impair the value thereof; and

            (vii) otherwise permitted by Mortgagee in writing.

        (i) carry with standard insurance companies and in amounts satisfactory
   to Mortgagee the following insurance:

             (A) workman's compensation insurance and public liability and
     property damage insurance in respect of all activities relating to the
     Collateral in which the Mortgagor might incur personal liability for the
     death or injury of an employee or third person or damage to or destruction
     of another's property; and

             (B) to the extent such insurance is carried by others engaged in
     similar undertakings in the same general areas in which the Collateral is
     located, (i) well control insurance and (ii) insurance in respect of the
     Operating Equipment and Immovable Collateral against loss or damage by
     fire, lightning, hail, tornado, explosion and other similar risks;

        (j) cause all policies of insurance to provide the maximum prior written
   notice to Mortgagee of cancellation which the insurance company will provide
   and to name Mortgagee as an additional named insured or as a "loss payee";
   permit Mortgagee to apply any proceeds of such insurance which it may receive
   toward part or full satisfaction of any or all of the Obligations secured
   hereby whether or not they are then due and owing and whether or not they are
   liquidated or contingent; and permit 

                                      -15-
<PAGE>
 
   Mortgagee to obtain replacement insurance (which may, but need not, be single
   interest insurance in favor of Mortgagee) if any insurance required hereby
   expires, is canceled or is otherwise not in full force and effect;

        (k) furnish to Mortgagee, upon request, copies of all operating
   agreements, oil and/or gas purchase contracts, or other contracts or
   agreements relating to the Collateral;

        (l) promptly perform all express or implied covenants that are required
   to be performed pursuant to any Contract;

        (m) to use all cash flow generated by the Collateral from time to time:
   first, to pay lease operating expenses relating to the Collateral and general
   and administrative expenses approved by Mortgagee which in no event shall
   exceed $150,000 per calendar month in the aggregate; second, to pay all trade
   payables and third, to the establishment of cash reserves or for capital
   expenditures pursuant to an Authority for Expenditure ("AFE") prepared by
   Mortgagor and approved by Mortgagee in writing, including reasonable
   expenditures necessary for completion of the current workover operations in
   the LaFourche Parish School Board No. 1 Well.

        4.5  RECORDING.  Mortgagor covenants and agrees to promptly (at
Mortgagor's own expense) record, register, deposit and file this and every other
instrument in addition or supple  mental thereto, including all applicable
financing statements, in such offices and places within the State of Louisiana,
the state where the Mortgagor has its principal place of business, and with the
Minerals Management Service and at such times and as often as may be necessary
to preserve, protect and renew the privilege and security interest herein
created as a first and prior privilege or security interest on real or personal
property, whether movable or immovable, as the case may be, and otherwise shall
do and perform all matters or things necessary or expedient to be done or
observed by reason of any applicable law or regulation of any state or of the
United States or any other competent authority for the purpose of effectively
creating, perfecting, maintaining and preserving the privilege and security
interest created hereby in and on the Collateral.  Mortgagor shall pay all taxes
payable upon the recording of this and every other instrument in addition or
supplement hereto.

        4.6  RECORDS, STATEMENTS AND REPORTS.  Mortgagor agrees and covenants to
keep proper books of record and account in which complete and correct entries
shall be made of Mortgagor's transactions in accordance with generally accepted
accounting principles and to furnish or cause to be furnished to Mortgagee upon
request or, if such reports are prepared by third parties, when available after
request by Mortgagee, in addition to any information, schedules and reports
required hereby or by any loan agreements entered into by Mortgagee and
Mortgagor in connection herewith, the following:

                                      -16-
<PAGE>
 
        (a) As soon as available and in any event within one hundred twenty
   (120) days after the end of each fiscal year, a statement of Mortgagor's
   financial position as of the end of such fiscal year and the related
   statements of revenues and expenses of Mortgagor for such fiscal year,
   setting forth in each case in comparative form the figures from Mortgagor's
   budget for such fiscal year and actual expenditures for such fiscal year.
   Such statements shall be audited by a nationally recognized accounting firm
   or other firm reasonably acceptable to Mortgagee, whose report shall be
   unqualified and shall further state that such financial statements present
   fairly the financial position of Mortgagor as of the end of such fiscal year
   and the results of its operations and changes in financial position for such
   fiscal year;

        (b) As soon as available and in any event within thirty (30) days
   following the end of each month, lease operating statements and a report
   showing the calculation of cash flow in form and substance consistent with
   the current financial report form provided to Mortgagee.

        (c) As soon as available and in any event within sixty (60) days after
   the end of each quarter, an unaudited statement of Mortgagor's financial
   position as of the end of such quarter and the related statements of revenues
   and expenses of Mortgagor for such quarter, setting forth in each case in
   comparative form the figures from Mortgagor's budget for such quarter and
   actual expenses for such quarter;

        (d) Quarterly reports showing payment of all applicable severance, ad
   valorem and other similar taxes; and

        (e) Such other information concerning operation of the Collateral, the
   title of Mortgagor to or the interest of Mortgagee in the Collateral and the
   business and affairs and financial condition of Mortgagor as Mortgagee may
   from time to time reasonably request.

                                   ARTICLE V
                              DEFAULT AND REMEDIES
                              --------------------

        5.1  EVENTS OF DEFAULT.  Mortgagor will be in default under this
instrument upon the happening of any of the following events or conditions
("Event of Default"):

        (a) Mortgagor or any endorser, guarantor, surety, accommodation party,
   or other person liable upon or for payment of any of the Obligations secured
   hereby fails to pay when due any of the Obligations secured hereby or to
   perform punctually any other obligation, covenant, term, or provision
   contained in or referred to in this instrument or any other instrument
   executed in connection herewith, including without limitation the occurrence
   of a Default as defined in the Note;

                                      -17-
<PAGE>
 
        (b) Any warranty or representation made in this instrument by Mortgagor
   or furnished to Mortgagee on behalf of Mortgagor is determined by Mortgagee
   to be untrue in any respect which would or might, in Mortgagee's opinion,
   result in substantial loss or impairment of the security provided by this
   instrument;

        (c) The entry of an order for relief under Title 11 of the United States
   Code as to Mortgagor or the adjudication of Mortgagor as insolvent or
   bankrupt pursuant to the provisions of any state insolvency or bankruptcy
   act; the commencement by Mortgagor of any case, proceeding or other action
   seeking any reorganization, arrangement, composition, adjustment,
   liquidation, dissolution or similar relief for itself under any present or
   future statute, law or regulation relating to bankruptcy, insolvency,
   reorganization or other relief for debtors; Mortgagor's consent to,
   acquiescence in or attempt to secure the appointment of any receiver of all
   or any substantial part of its properties or of the Collateral; Mortgagor
   shall generally not pay its debts as they become due or shall admit in
   writing its inability to pay its debts or shall make a general assignment for
   the benefit of creditors; or Mortgagor shall take any corporate action to
   authorize any of the acts set forth above in this Paragraph;

        (d) Any case, proceeding or other action against Mortgagor shall be
   commenced seeking to have an order for relief entered against it as a debtor
   or seeking any reorganization, arrangement, composition, adjustment,
   liquidation, dissolution or similar relief under any present or future
   statute, law or regulation relating to bankruptcy, insolvency, reorganization
   or other relief for debtors, or seeking appointment of any receiver for
   Mortgagor or for all or any substantial part of its property or for the
   Collateral, and such case, proceeding or other action (i) results in the
   entry of an order for relief against it which is not fully stayed within
   seven business days after the entry thereof, or (ii) remains undismissed for
   an aggregate of thirty days (whether or not consecutive); or the possibility
   that any portion of the Collateral would, by operation of law or otherwise,
   devolve on or pass to any person other than Mortgagor and such situation
   shall continue and not be remedied within thirty days after the happening of
   any such event;

        (e) Mortgagor's title to the Collateral or any substantial part thereof
   becomes the subject matter of litigation which would or might, in Mortgagee's
   opinion, upon final determination result in substantial impairment or loss of
   the security provided by this instrument;

        (f) Except as specifically authorized herein, there is substantial
   damage to or destruction of or sale of any of the Collateral or the
   Collateral is subjected to any privilege, lien or encumbrances not permitted
   under subsection 4.4(h); or

                                      -18-
<PAGE>
 
        (g) Except as to any default which has been disclosed to Mortgagee in
   writing as of the date of this Mortgage, there occurs a default in the
   performance of any obligation of Mortgagor to any other party, including but
   not limited to, a default under any document executed in connection with or
   creating the Endowment Liens.

   5.2  ACCELERATION UPON DEFAULT.  In addition to the right and privilege to
demand payment of the Note at any time, as set forth therein, and without
limiting the Mortgagee's rights and privileges thereunder, upon the occurrence
of any Event of Default, or at any time thereafter, Mortgagee may, at its
option, declare the entire unpaid principal of and the interest accrued on the
Obligations to be forthwith due and payable, without any protest, presentment,
demand, notice of intent to accelerate, notice of acceleration or further notice
of any kind, all of which are hereby expressly waived by Mortgagor.

   5.3  RIGHTS TO COLLATERAL UPON DEFAULT.

        (a) Operation of property by Mortgagee.  Upon the occurrence of an Event
   of Default or at any time thereafter, and in addition to all other rights of
   Mortgagee, Mortgagee shall have the following rights and powers (but no
   obligation):

            (i)   To enter upon and take possession of any of the Realty
      Collateral, to exclude Mortgagor therefrom, and to hold, use, administer,
      manage and operate the same to the extent that Mortgagor could do so;

            (ii)  To operate the Realty Collateral, without any liability to
   Mortgagor in connection with such operations, except for failure to use
   ordinary care in the operation of the Realty Collateral; and

            (iii) To the extent that Mortgagor could do so, to collect, receive
   and receipt for all Hydrocarbons produced and sold from the Realty
   Collateral, to make repairs, to purchase machinery and equipment, to conduct
   workover operations, to drill additional wells, and to exercise every power,
   right and privilege of Mortgagor with respect to the Realty Collateral.

   When and if the expenses of such operation and development (including costs
   of unsuccessful workover operations or additional wells) have been paid, and
   the Obligations have been paid, the Realty Collateral shall be returned to
   Mortgagor (providing there has been no foreclosure sale).

        (b) Seizure.  Mortgagor for itself and its successors and assigns,
   agrees and stipulates that it shall be lawful for and Mortgagor authorizes
   Mortgagee without making a demand or putting in default, putting in default
   being expressly waived, to cause all and singular the Realty Collateral to be
   seized and sold by executory or other 

                                      -19-
<PAGE>
 
   legal process without appraisement (appraisement being hereby expressly
   waived) either in its entirety or in lots, or parcels as Mortgagee may
   determine to the highest bidder for cash or on such terms as Mortgagee may
   direct, Mortgagor for itself, its successors and assigns, hereby
   acknowledging the Obligations and confessing judgment for the full amount of
   said Note in principal and interest and all other Obligations.

        (c) Foreclosure.  Upon the occurrence of an Event of Default (as
   hereinafter defined), Mortgagee shall have the right and power to proceed by
   suit or suits for spe  cific performance of any covenant or agreement herein
   contained or in aid of the execution of any power herein granted or for any
   foreclosure hereunder or for the sale of the Realty Collateral under the
   judgment or decree of any court or courts of competent jurisdiction, or for
   the appointment of a receiver pending any foreclosure hereunder or the sale
   of the Realty Collateral under the order of a court or courts of competent
   jurisdiction or under executory or other legal process, or for the
   enforcement of any other appropriate remedy.  Mortgagor agrees that, in the
   event any proceedings are taken under this instrument by way of executory
   process or otherwise, any and all declarations of the facts made by authentic
   act before a notary public and in the presence of two witnesses, by a person
   declaring that such facts lie within his knowledge, shall constitute
   authentic evidence of such facts for the purpose of executory process.

        (d) Application of Proceeds.  The proceeds of any sale of the Collateral
   or any part thereof will be applied (A) first, to the payment of all expenses
   incurred by Mortgagee; (B) second, to the payment of the Obligations; and (C)
   third, the balance, if any, thereafter remaining will be paid to Mortgagor or
   Mortgagor's successors or assigns as their interests may appear upon demand
   of Mortgagor or Mortgagor's successors or assigns.

        (e) Keeper Provisions.  Upon the occurrence of an Event of Default,
   Mortgagee is authorized prior or subsequent to the institution of any
   foreclosure proceedings, to enter upon the Collateral, or any part thereof,
   and to exercise without interference from Mortgagor any and all rights which
   Mortgagor has with respect to the management, possession and operation of the
   Collateral, it being the intention to confer on Mortgagee or Mortgagee's
   agent, all of the rights granted to keepers of mineral interests by LSA R.S.
   9:5131, et seq.  It is hereby agreed that the keeper shall be entitled to
   receive as compensation, in excess of its costs and expenses, an amount equal
   to one percent of the gross revenues of the Collateral.  All costs, expenses
   and liabilities of every character incurred by Mortgagee in managing,
   operating and maintaining such Collateral shall constitute a demand
   obligation owing by Mortgagor to Mortgagee, shall draw interest thereon from
   date of expenditure until date paid at the Default Rate, all of which shall
   constitute a portion of the Obligations secured by the privilege and lien
   evidenced by this instrument.

                                      -20-
<PAGE>
 
        (f) Waiver.  Mortgagor hereby expressly waives:

             (i)  The benefit of appraisement as provided for in Articles 2332,
   2336, 2723 and 2724 of the Louisiana Code of Civil Procedure and all other
   laws conferring the same;

             (ii)  The demand and three (3) days delay accorded by Articles 2639
   and 2721 of the Louisiana Code of Civil Procedure;

             (iii) The notice of seizure required by Articles 2293 and 2721 of
   the Louisiana Code of Civil Procedure; and

             (iv) The benefit of any other provisions of Articles 2331, 2722 and
   2723 of the Louisiana Code of Civil Procedure;

        and Mortgagor agrees to the immediate seizure of the property subject
        hereto in the event of suit hereon, and further, Mortgagee and any
        future holder or holders of the Note shall be entitled to all of the
        rights and remedies provided in the Louisiana Commercial Laws -- Secured
        Transactions (Chapter 9 of the Louisiana Uniform Commercial Code (the
        "UCC" or "Uniform Commercial Code")) , by Articles 203-204 of the
        Louisiana Mineral Code and by Article 3278 et seq. of the Louisiana
        Civil Code.

        5.4  ACCUMULATION OF RIGHTS.  Every right, power and remedy herein given
to Mortgagee shall be cumulative of and in addition to every other right, power
and remedy herein specifically given and now or hereafter existing; and each and
every right, power and remedy, whether specifically given or otherwise existing,
may be exercised from time to time and so often and in such order as may be
deemed expedient by Mortgagee, and the exercise or the beginning of the exercise
of any such right, power or remedy shall not be deemed a waiver of the right to
exercise at the same time or thereafter any other right, power or remedy.  No
delay or omission by Mortgagee in the exercise of any right, power or remedy
shall impair any such right, power or remedy or operate as a waiver thereof or
of any other right, power or remedy then or thereafter existing and no single
sale or series of sales under this Article V shall exhaust Mortgagee's rights
and powers, but such power shall continue to exist for so long as, and may be
exercised in the manner hereinabove provided as often as, the circumstances
require to give Mortgagee full relief hereunder.

        5.5  MARSHALING.  Mortgagor, for itself and all who may claim through or
under Mortgagor waives, to the extent that Mortgagor may lawfully do so under
applicable law of the State of Louisiana, any and all rights to have the
Collateral marshaled upon any foreclosure of the lien and privilege hereof, or
sold in inverse order of alienation, and Mortgagor agrees that Mortgagee may
cause the Collateral to be sold as an entirety or in parcels as Mortgagee may
direct.

                                      -21-
<PAGE>
 
        5.6  RIGHTS TO PERSONALTY COLLATERAL UPON DEFAULT.  Upon the occurrence
of an Event of Default, or at any time thereafter, Mortgagee may proceed against
the Personalty Collateral in accordance with the rights and remedies granted
herein with respect to the Realty Collateral, or will have all rights and
remedies granted by the Uniform Commercial Code and this instrument.  Mortgagee
shall have the right to take possession of the Personalty Collateral, and for
this purpose Mortgagee may enter upon any premises on which any or all of the
Personalty Collateral is situated and, to the extent that Mortgagor could do so,
take possession of and operate the Personalty Collateral or remove it therefrom.
Mortgagee may require Mortgagor to assemble the Personalty Collateral and make
it available to Mortgagee at a place to be designated by Mortgagee which is
reasonably convenient to both parties.  Unless the Personalty Collateral is
perishable or threatens to decline speedily in value or is of a type customarily
sold on a recognized market, Mortgagee will send Mortgagor reasonable notice of
the time and place of any public sale or of the time after which any private
sale or other disposi  tion of the Personalty Collateral is to be made.  This
requirement of sending reasonable notice will be met if such notice is mailed,
postage prepaid, to Mortgagor at the address designated in Section 6.12 (or such
other address as has been designated as provided herein) at least ten days
before the time of the sale or disposition.  In addition to the expenses of
retaking, holding, preparing for sale, selling and the like, Mortgagee will be
entitled to recover reasonable attorney's fees and legal expenses as provided
for in this instrument and in the writings evidencing said Obligations before
applying the balance of the proceeds from the sale or other disposition toward
satisfaction of the Obligations.  Mortgagor will remain liable for any
deficiency remaining after the sale or other disposition.

        5.7  RIGHTS TO IMMOVABLE COLLATERAL UPON DEFAULT.  Upon the occurrence
of any Event of Default, or at any time thereafter, Mortgagee may elect to treat
the Immovable Collateral as either Realty Collateral or as Personalty Collateral
(but not both) and proceed to exercise such rights as apply to the type of
Collateral selected.

        5.8  ACCOUNT MORTGAGORS.  Mortgagee may, in its discretion, before or
after the occurrence of an Event of Default, notify any account debtors to make
payments directly to Mortgagee and contact account debtors directly to verify
information furnished by Mortgagor. Mortgagee shall not have any obligation to
preserve any rights against prior parties.

                                   ARTICLE VI
                                 MISCELLANEOUS
                                 -------------

        6.1  ADVANCES BY MORTGAGEE.  Each and every covenant of Mortgagor herein
contained shall be performed and kept by Mortgagor solely at Mortgagor's
expense.  If Mortgagor fails to perform or keep any of the covenants of
whatsoever kind or nature contained in this instrument, Mortgagee or any keeper
may, but will not be obligated to, make advances to perform the same on
Mortgagor's behalf, and Mortgagor hereby agrees to repay such sums and any
attorneys' fees incurred in connection therewith on demand plus interest thereon
from 

                                      -22-
<PAGE>
 
the date of the advance until paid at the Default Rate.  In addition,
Mortgagor hereby agrees to repay on demand any reasonable costs, expenses and
attorney's fees incurred by Mortgagee or any keeper which are to be obligations
of the Mortgagor pursuant to, or allowed by, the terms of this instrument, plus
interest thereon from the date of the advance until paid at the Default Rate.
Any such amounts so paid by Mortgagee or any keeper shall be considered part of
the Obligations secured hereby and shall be secured by this instrument and the
amount and nature of any such payment by Mortgagee and the date when paid shall
be held to be fully and authentically established by affidavit of Mortgagee or
its or their agents, servants or employees, and such amounts shall be paid as
part of the Obligations out of the proceeds of the sale of the Collateral in the
event of foreclosure or other proceedings together with interest thereon at the
rate provided for above; provided, however (a) that the amount of the
Obligations secured and to be secured hereby shall in no event exceed the amount
set out in Article 2.3 above and (b) that the exercise of any right or
advancement or payment of cost or expenses by Mortgagee or any keeper shall in
no manner be construed as a waiver of the rights of Mortgagee to demand payment
on the Note.  Mortgagee and any future holder or holders of the Note shall be
and are hereby subrogated to all rights, liens and privileges securing payment
of any debt or claim for the payment of which Mortgagee may make advances
pursuant to the terms hereof.

        6.2  DEFENSE OF CLAIMS.  Mortgagor shall promptly notify Mortgagee in
writing of the commencement of any legal proceedings affecting Mortgagor's title
to the Collateral or the lien and privilege created hereby, and shall take such
action, employing attorneys agreeable to the Mortgagee, as may be necessary to
preserve Mortgagor's and Mortgagee's rights herein.  If Mortgagor fails or
refuses to defend Mortgagor's or Mortgagee's rights in and to the Collateral,
Mortgagee may take such action on behalf of and in the name of Mortgagor and at
Mortgagor's expense.  Moreover, Mortgagee may take such independent action in
connection therewith as it may in its discretion deem proper, including, without
limitation, the right to employ indepen  dent counsel and to intervene in any
suit affecting the Collateral.  All costs, expenses and attorneys' fees incurred
by Mortgagee pursuant to this Article 6.2 shall be paid by Mortgagor on demand
plus interest thereon from the date of the advance by Mortgagee until paid at
the Default Rate.

        6.3  PARTIAL RELEASES.  The Mortgagee at all times shall have the right
to release any part of the Collateral now or hereafter subject to the lien and
privilege hereof or any part of the proceeds of production or any income herein
or hereafter assigned or pledged or any other security it now has or may
hereafter have securing said indebtedness, without releasing any other part of
said Collateral, proceeds, income or security and without affecting the lien
hereof as to the parts or parties not released, or the right to future proceeds
and income.

        6.4  RENEWALS, AMENDMENTS AND OTHER SECURITY.  Without notice or consent
of Mortgagor, renewals and extensions of the written instruments constituting
part or all of the Obligations may be given at any time and amendments may be
made to agreements relating to any part of such written instruments or the
Collateral.  Mortgagee may take or hold other 

                                      -23-
<PAGE>
 
security for the Obligations without notice to or consent of Mortgagor. The
acceptance of this instrument by Mortgagee shall not waive or impair any other
security Mortgagee may have or hereafter acquire to secure the payment of the
Obligations nor shall the taking of any such additional security waive or impair
the lien and security interests herein granted. Mortgagee may resort first to
such other security or any part thereof, or first to the security herein given
or any part thereof, or from time to time to either or both, even to the partial
or complete abandonment of either security, and such action will not be a waiver
of any rights conferred by this instrument.

        6.5  ASSIGNMENT AND FINANCING STATEMENT.  This instrument will be deemed
to be and may be enforced from time to time as an assignment, chattel mortgage,
contract, deed of trust, financing statement, real estate mortgage, or security
agreement, and from time to time as any one or more thereof if appropriate under
applicable state law.  As a financing statement this instrument is intended to
cover all Personalty Collateral and Immovable Collateral, including without
limitation Mortgagor's interest in all Hydrocarbons as and after they are
severed by being reduced to possession at the wellhead and all accounts arising
from the sale thereof at the wellhead.  This instrument shall be filed in the
appropriate records of the county or counties or parish or parishes and the
state in which the Realty Collateral is located, in the Uniform Commercial Code
records of a parish in the State of Louisiana or other appropriate office of the
State in which any Personalty Collateral or any Realty Collateral is located and
in the Uniform Commercial Code Records of the state where Mortgagor's principal
place of business is located (if not in Louisiana).  At Mortgagee's request
Mortgagor shall execute financing statements covering the Personalty Collateral
and Immovable Collateral, which financing statements may be filed in the Uniform
Commercial Code records of a parish in the State of Louisiana or any other state
or other appropriate office of the state in which any of the Collateral is
located or where Mortgagor has its principal place of business or in the county
where Mortgagor has its principal place of business.

        6.6  LIMITATION ON INTEREST.  As used herein, the term "Maximum Rate"
shall mean and refer to the maximum rate of nonusurious interest, if any, that
Mortgagee may from time to time charge Mortgagor and in regard to which
Mortgagor would be prevented successfully from raising the claim or defense of
usury under applicable law as now, or to the extent permitted by law, as may
hereafter be, in effect (said law permitting the highest rate being herein
referred to as the "Interest Law").  It is the intention of Mortgagor and
Mortgagee to conform strictly to the Interest Law applicable to this loan
transaction.  Accordingly, it is agreed that notwithstanding any provision to
the contrary, the aggregate of all interest and any other charges or
consideration constituting interest under applicable Interest Law that is taken,
reserved, contracted for, charged or received under this Mortgage or otherwise
in connection with this loan transaction shall under no circumstances exceed the
maximum amount of interest allowed by the Interest Law applicable to this loan
transaction.  If any excess of interest in such respect is provided for, or
shall be adjudicated to be so provided for, in the Note or in any of the
documents securing payment of the Note or otherwise relating thereto, then in
such event (a) 

                                      -24-
<PAGE>
 
the provisions of this paragraph shall govern and control, (b) neither Mortgagor
nor Mortgagor's heirs, legal representatives, successors or assigns or any other
party liable for the payment of the Note shall be obligated to pay the amount of
such interest to the extent that it is in excess of the maximum amount of
interest allowed by the Interest Law applicable to this loan transaction, (c)
any excess shall be deemed a mistake and canceled automatically and, if there
tofore paid, shall be credited on the Note by Mortgagee (or if the Note shall
have been paid in full, refunded to Mortgagor) and (d) the effective rate of
interest shall be automatically subject to reduction to the Maximum Rate allowed
under such Interest Law as now or hereafter construed by courts of appropriate
jurisdiction. All sums paid or agreed to be paid the Mortgagee for the use,
forbearance or detention of the indebtedness evidenced by the Note shall, to the
extent permitted by the Interest Law applicable to this loan transaction, be
amortized, prorated, allocated and spread throughout the full term of the Note.

        6.7  UNENFORCEABLE OR INAPPLICABLE PROVISIONS.  If any provision hereof
is invalid or unenforceable, the other provisions hereof will remain in full
force and effect and will be liberally construed in favor of Mortgagee in order
to carry out the provisions hereof.

        6.8  RIGHTS CUMULATIVE.  Each and every right, power and remedy herein
given to Mortgagee will be cumulative and not exclusive, and each and every
right, power and remedy whether specifically herein given or otherwise existing
may be exercised from time to time and as often and in such order as may be
deemed expedient by Mortgagee, and the exercise, or the beginning of the
exercise, of any such right, power or remedy will not be deemed a waiver of the
right to exercise, at the same time or thereafter, any other right, power or
remedy.  No delay or omission by Mortgagee in the exercise of any right, power
or remedy will impair any such right, power or remedy or operate as a waiver
thereof or of any other right, power or remedy then or thereafter existing.

        6.9  WAIVER BY MORTGAGEE.  Any and all covenants in this instrument may
from time to time by instrument in writing by the Mortgagee, be waived to such
extent and in such manner as Mortgagee may desire, but no such waiver will ever
affect or impair Mortgagee's rights hereunder, except to the extent specifically
stated in such written instrument.  All changes to and modifications of this
instrument must be in writing by authentic act and signed by Mortgagee.

        6.10  TERMS.  The term "Mortgagor" as used in this instrument will be
construed as singular or plural to correspond with the number of persons
executing this instrument as Mortgagor.  If more than one person executes this
instrument as Mortgagor, their duties, covenants, warranties and liabilities
under this instrument will be joint, several and in solido, and any occurrence
of an Event of Default as to one Mortgagor shall be deemed an Event of Default
as to each Mortgagor.  The terms "Mortgagee" and "Mortgagor" as used in this
instrument include the heirs, executors or administrators, successors,
representatives, receivers, and assigns of those parties.  This instrument is
binding upon Mortgagor, Mortgagor's successors and assigns, as well as upon
any person, firm or corporation hereafter acquiring title to any 

                                      -25-
<PAGE>
 
of the Collateral by, through or under Mortgagor and will inure to the benefit
of Mortgagee and its successors and assigns.

        6.1  GOVERNING LAW.  THIS INSTRUMENT SHALL BE GOVERNED BY AND CONSTRUED
IN ACCORDANCE WITH THE LAWS OF THE STATE OF LOUISIANA, SUBJECT, HOWEVER, TO THE
EFFECT OF APPLICABLE FEDERAL LAW (INCLUDING, WITHOUT LIMITATION, 12 U.S.C. 85).

        6.1  NOTICE.  All notices required or permitted to be given by Mortgagor
or Mortgagee shall be given in writing and may be effected by personal delivery,
by facsimile or by placing the same in the U. S. Mail, registered or certified,
return receipt requested, postage prepaid and addressed as follows:

   Mortgagor:          FORMAN PETROLEUM CORPORATION
                       650 Poydras Street - Suite 2200
                       New Orleans, Louisiana 70130-6101
                       Attn: Marvin J. Gay
 
   Mortgagee:          JOINT ENERGY DEVELOPMENT INVESTMENTS           
                       LIMITED PARTNERSHIP
                       c/o Enron Corp.                
                       1400 Smith Street              
                       Houston, Texas 77002           
                       Attn: Keith Power/Brenda McGee, 
                             Specialists - 28th Floor

   With a copy to:     JOINT ENERGY DEVELOPMENT INVESTMENTS           
                       LIMITED PARTNERSHIP
                       c/o Enron Corp.     
                       1400 Smith Street   
                       Houston, Texas 77002 
                       Attn: Wynne M. Snoots

Unless otherwise provided herein, all notices shall be deemed given (i) upon
receipt if hand delivered or sent by facsimile, or (ii) if sent by mail, three
days following the date deposited in the mail.  Mortgagor agrees that its
address shall be changed only by depositing notice of such change enclosed in a
post-paid wrapper in a post office or official depository under the care and
custody of the United States Postal Service, certified mail, postage prepaid,
return receipt requested, addressed to Mortgagee at the address set out above
(or to such other address as Mortgagee may have designated by notice given as
provided above, to Mortgagor).  Any such notice of change of address of
Mortgagor or Mortgagee or other holder of the Obligations shall be effective
five business days after such deposit.

                                      -26-
<PAGE>
 
        6.13  SURETY WAIVERS.  Mortgagor agrees that no acceleration of the
maturity of the Obligations, no renewal, extension or rearrangement of or any
other indulgence with respect to the Obligations, no change in the place or
manner of payment of or other change in the terms of the Obligations, no release
of or substitution for any security or other guaranty now or hereafter held by
Mortgagee for payment of the Obligations, no release of any person liable for
payment or purchase of the Obligations, including, without limitation, any
maker, endorser, guarantor or surety (any such other person is referred to
herein as an "Other Liable Party"), no delay in enforcement of payment of the
Obligations and no delay or omission or lack of dili  gence or care in
exercising any right or power with respect to the Obligations or any security
therefor or guaranty thereof, shall in any manner impair or affect the rights of
Mortgagee or the obligations, duties and liabilities of Mortgagor hereunder.
Mortgagor agrees that it shall not be necessary or required that Mortgagee make
demand for payment upon any Other Liable Party or present the Obligations for
payment by any Other Liable Party or make protest thereof or give notice to any
Other Liable Party of maturity or nonpayment of the Obligations by any Other
Liable Party or file suit or proceed to obtain or assert a claim for personal
judgment against any Other Liable Party for the Obligations or make any effort
at collection of the Obligations or exercise or assert any other right or remedy
to which Mortgagee is or may be entitled in connection with the Obligations or
any security therefor or assert or file at any time any claim against the assets
or estate of any Other Liable Party as a condition of enforcing this instrument.
Mortgagor waives any right to the benefit of or to require or control
application of any Collateral now existing or hereafter obtained by Mortgagee as
security for the Obligations and agrees that Mortgagee shall have no duty
insofar as Mortgagor is concerned to apply upon any of the Obligations, any
money, payments or other property at any time received by or paid to or in the
possession of Mortgagee.  Mortgagor agrees that except for the gross negligence
or willful misconduct of Mortgagee, Mortgagor shall have no recourse or action
against Mortgagee by reason of any action Mortgagee may take or omit to take in
connection with the Obligations or the collection of any sums or amounts herein
mentioned, or in connection with any security or any other guaranty at any time
existing therefor.

        6.14  CONDEMNATION.  All awards and payments heretofore and hereafter
made for the taking of or injury to the Collateral, or any portion thereof,
whether such taking or injury be done under the power of eminent domain or
otherwise, are hereby assigned, and shall be paid to Mortgagee.  Mortgagee is
hereby authorized to collect and receive the proceeds of such awards and
payments and to give proper receipts and acquittances therefor.  Mortgagor
hereby agrees to make, execute and deliver, upon request, any and all
assignments and other instruments sufficient for the purpose of confirming this
assignment of the awards and payments to Mortgagee free and clear of any
encumbrances of any king or nature whatsoever.  Any such award or payment may,
at the option of Mortgagee, be retained and applied by Mortgagee after payment
of reasonable attorneys' fees, costs and expenses incurred in connection with
the collection of such award or payment toward payment of all or a portion of
the Obligations, whether or not the Obligations are then due and payable, or be
paid over wholly or in part to 

                                      -27-
<PAGE>
 
Mortgagor for the purpose of altering, restoring or rebuilding any part of the
Collateral which may have been altered, damaged or destroyed as a result of any
such taking, or other injury to the Collateral.

        6.15   WAIVER OF NOTARY'S CERTIFICATES.  The parties hereto expressly
waive the production of mortgage, conveyance or tax certificates and hereby
relieve and release me, said Notary, and agree to hold me harmless from and by
reason of the nonproduction and nonannexation thereof to this instrument.

        6.16   SUBROGATION.  This instrument is made with full substitution and
subrogation of Mortgagee, its successors and assigns, in and to all covenants,
warranties and representations by others heretofore given or made with respect
to title in and to the Collateral or any part thereof whether recorded or
unrecorded by contract or otherwise, to the extent that such covenants,
warranties and representations may be so subrogated and to any liens or
privileges covering any property or properties of Mortgagor securing the payment
of any indebtedness which is fully or partially discharged by funds made
available to Mortgagor and secured hereby, to the full extent that such
subrogation of liens and privileges is allowed under applicable state law.

                                      -28-
<PAGE>
 
        Thus done and passed in my office in Houston, Harris County, Texas, this
21st day of November, 1996 in the presence of the undersigned competent
witnesses who hereunto sign their names with the Mortgagor and me, Notary, after
due reading of the whole.

 
                                 MORTGAGOR

Witnesses to all
signatures:                      FORMAN PETROLEUM CORPORATION


  /s/ Gray H. Muzzy
------------------------
Gray H. Muzzy
                                 By:   /s/ Marvin J. Gay
                                     -------------------
  /s/ Lynn C. Woodson                      Marvin J.  Gay
 -----------------------                   Treasurer
Lynn C. Woodson                        



Stamp:                          /s/ Diane L. Bailey
Diane L. Bailey                 --------------------------------
Notary Public, State of Texas   Notary Public in and for
My Commission                   The State of Texas
Expires 5/21/99                              -------------------
                                Name: Diane L. Bailey
                                     ---------------------------
                                My Commission Expires:  5/21/99
                                                      ----------



            (Signature Page to Act of Mortgage, Security Agreement,
               Assignment of Production and Financing Statement)

                                      -29-
<PAGE>
 
                                   EXHIBIT A

                                   PREAMBLE
                                   LOUISIANA


        This Exhibit A sets forth the description of the Oil and Gas Properties
covered by the Act of Mortgage, Security Agreement, Assignment of Production and
Financing Statement to which this Exhibit A is attached (the "Mortgage").
Capitalized terms used in this Preamble and not otherwise defined herein shall
have the meanings ascribed thereto in the Mortgage.

          1.   This Exhibit A consists of descriptions of oil, gas and
mineral leases, overriding royalties and other interests covering lands located
within the State of Louisiana or federal lands located on the Outer Continental
Shelf and offshore of the State of Louisiana.  The heading for each lease or
group of leases includes Mortgagor's internal prospect name.

          2.   Exhibit A includes one or more pages with the following
subheadings:

Leases:         The description of the lease or leases in which Mortgagor owns
                an interest covered by this Exhibit. Where applicable, the
                original lessor and lessee, Federal Lease Number, the date of
                the lease, the lands covered by the lease and other descriptive
                information relating to the lease is set forth.

Limitations:    The information next to this subheading describes the areas
                under each lease in which Mortgagor owns an interest. Such
                description shall include all of Mortgagor's right, title and
                interest in the oil, gas and mineral leases and other interests
                listed in this Exhibit and not any interest in excess thereof.
                If "none" appears, there are no limitations on Mortgagor's
                interest in the areas or depths under the lease.

Contract List:  Exhibit A may include one or more pages with the heading
                "Contract List" which list certain agreements that affect
                Mortgagor's interest in the oil, gas and mineral leases and
                other interests, and Mortgagor's interest in the wells or units
                described or referred to in the Exhibit, which oil, gas and
                mineral leases and other interests and wells or units are
                located in the prospect identified in the heading of the page of
                the Exhibit, to the extent such agreements are in force and
                effect. The reference to such agreements shall not constitute a
                ratification or other recognition of the validity or
                effectiveness of such agreements or otherwise revive same. Such
                contracts are referred to by the type of agreement and affects
                Mortgagor's interest in oil, gas and mineral leases and other
                interests. Also shown is the date or the effective date of the
                agreement and amendments thereto, and the parties to the
                agreement.
<PAGE>
 
Ownership

Interests:   Exhibit A includes Mortgagor's Working Interest and the Mortgagor's
             Net Revenue Interest (identified as Mortgaged Interest) for certain
             wells, units or areas covered by a lease. The wells or units are
             located in the prospect identified in the heading of the exhibit,
             and the prospect is located in the parish of the State of Louisiana
             referred to in the description or on federal lands located on the
             Outer Continental Shelf and offshore of the State of Louisiana. The
             wells or units in the particular prospect are located upon the
             lands covered by the oil, gas and mineral leases, overriding
             royalties or other interests described in the exhibit that relates
             to that prospect or lands pooled therewith. The descriptions
             include the following:

                        Well or
                        Unit Name:  The particular well or unit located within
                                    the prospect identified in the heading.

                        Working
                        Interest:   Mortgagor's Working Interest.

                        Net Revenue
                        Interest:   Mortgagor's Net Revenue Interest.

             The Working Interests and Net Revenue Interests are computed and
             set out herein after taking into account all of the terms,
             provisions and conditions of the agreements and other instruments
             listed on the "Contract List".

             The Mortgagor's Net Revenue Interest means (i) with respect to a
             unit for which the Mortgagor's Net Revenue Interest is stated, that
             interest in the applicable oil or gas production produced, saved
             and sold from such unitized, pooled, communitized or participating
             areas with respect to the existing interval in which the well or
             wells located on such unit are completed, which is owned by the
             Mortgagor by virtue of its ownership of the Mortgagor's Working
             Interest in the leases included in whole or in part in such area
             after deducting all burdens against the production therefrom, and
             (ii) with respect to a well for which the Mortgagor's Net Revenue
             Interest is stated, that interest in the existing interval in which
             such well is completed for production after deducting all burdens
             against the production therefrom which is owned by the Mortgagor by
             virtue of its ownership of the Mortgagor's Working Interest in the
             lease on which such well is located.

             "Before Payout" and "After Payout" refer to the Mortgagor's Working
             Interest and the Mortgagor's Net Revenue Interest "before payout"
             and "after payout" as 
<PAGE>
 
             defined in the applicable joint operating agreement or other
             instrument affecting the well or unit as denoted in the Exhibit.
             Mortgagor's interest may decrease or increase as a result of a
             reversionary interest, an operation wherein Mortgagor has paid
             costs attributable to the interest of a non-consenting party or a
             con senting party has paid costs attributable to the interest of
             Mortgagor as a non-consenting party, and the consenting party is
             entitled to recover a percentage of its cost, or other circumstance
             which triggers an increase or decrease in such interest. Mortgagor
             makes no undertaking concerning the terms and conditions of the
             reversion or the status of payout, the costs that may be recovered,
             whether or when such recovery has occurred or will occur, or, in
             the case of an election, what election will be made. If more than
             one reversionary interest, non-consent operation or other
             circumstance affects a well or unit, "After Payout" refers to the
             occurrence of the reversion of the last of the reversionary
             interest, recoupment or such other circumstance.
<PAGE>
 
                                                                    Page 1 of 64

                                   EXHIBIT A

                               COVERING LANDS IN
                      LAFOURCHE PARISH, STATE OF LOUISIANA



                                 EFFECTIVE       CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE         BOOK   PAGE   ENTRY
 
02-0000082-001      08/20/1974  08/20/1974      523     34  393815
GROSS ACRES       LESSOR     :  DR. J.A. GRAVOIS
0.00000           LESSOR ID  :
                  LESSEE     :  TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT   :  LAKE ENFERMER
<PAGE>
 
                                   EXHIBIT A                       Page 2 of 64

                               COVERING LANDS IN
                      LAFOURCHE PARISH, STATE OF LOUISIANA



                                EFFECTIVE     CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
05-0000200-001    03/08/1976    03/08/1976    569    667  422170
GROSS ACRES       LESSOR   :    LAFOURCHE REALTY COMPANY, INC.
4.58000           LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
05-0000203-001    12/12/1972    12/12/1972   552   208  414734
GROSS ACRES       LESSOR   :    LAFOURCHE REALTY COMPANY INC
0.22900           LESSOR ID:  
                  LESSEE   :    LYNAL INC
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
05-0000206-001    05/24/1973    05/24/1973   506   834  382504
GROSS ACRES       LESSOR  :     JOHN M CULVER AND JANE DUSENBURY CULVER, 
                                ET AL
0.35781           LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
05-0000207-001    05/03/1973    05/03/1973    506  831  382503
GROSS ACRES       LESSOR   :    JAMES B THOMAS, ET AL
0.35781           LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER
<PAGE>
 
                                   EXHIBIT A                        Page 3 of 64


                               COVERING LANDS IN
                      LAFOURCHE PARISH, STATE OF LOUISIANA



                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
05-0000208-001    12/07/1972    12/07/1972   516   372  389020
GROSS ACRES       LESSOR   :    JAMES P THOMAS
0.35781           LESSOR ID:  
                  LESSEE   :    LYNAL, INC
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
05-0000209-001    05/12/1976    05/12/1976
GROSS ACRES       LESSOR   :    LAFOURCHE REALTY COMPANY INC
1.12210           LESSOR ID:  
                  LESSEE   :    MCMORAN EXPLORATION COMPANY
                  PROSPECT :    LAKE ENFERMER
<PAGE>
 
                                   EXHIBIT A                        Page 4 of 64

                               COVERING LANDS IN
                      LAFOURCHE PARISH, STATE OF LOUISIANA



                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-0001537-001    12/10/1973    12/10/1973   506   257  382128
GROSS ACRES       LESSOR   :    LAFOURCHE REALTY COMPANY INC.
7.62200           LESSOR ID:  
                  LESSEE   :    LYNAL EXPLORATION COMPANY
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE     CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0002046-001    09/26/1975    09/26/1975    551    357  414240
GROSS ACRES       LESSOR   :    LAFOURCHE REALTY COMPANY
11.95100          LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-0003268-001    06/13/1975    06/13/1975   543   479  408667
GROSS ACRES       LESSOR   :    HUGH C MCNEIL
160.00000         LESSOR ID:  
                  LESSEE   :    MCMORAN EXPLORATION COMPANY
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-0003268-002    06/13/1975    06/13/1975   543   475  408666
GROSS ACRES       LESSOR   :    GRACE WELD COLBY
160.00000         LESSOR ID:  
                  LESSEE   :    MCMORAN EXPLORATION COMPANY
                  PROSPECT :    LAKE ENFERMER
<PAGE>
 
                                   EXHIBIT A                        Page 5 of 64

                               COVERING LANDS IN
                      LAFOURCHE PARISH, STATE OF LOUISIANA



                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-0003271-001    03/26/1975    03/26/1975   537   869  404483
GROSS ACRES       LESSOR   :    LAFOURCHE REALTY COMPANY
71.59400          LESSOR ID:  
                  LESSEE   :    MCMORAN EXPLORATION COMPANY
                  PROSPECT :    LAKE ENFERMER
<PAGE>
 
                                   EXHIBIT A                        Page 6 of 64

                               COVERING LANDS IN
                      LAFOURCHE PARISH, STATE OF LOUISIANA



                                EFFECTIVE     CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0001542-001    04/01/1974    04/01/1974    602    365  452164
GROSS ACRES       LESSOR   :    LAFOURCHE REALTY COMPANY
9.96000           LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-0003270-001    03/18/1974    03/18/1974   510   706  385730
GROSS ACRES       LESSOR   :    RUTH DEXTER CLOW ET AL
160.00000         LESSOR ID:  
                  LESSEE   :    XPO INC
                  PROSPECT :    LAKE ENFERMER
<PAGE>
 
                                   EXHIBIT A                        Page 7 of 64

                               COVERING LANDS IN
                      LAFOURCHE PARISH, STATE OF LOUISIANA



                                 EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0003272-001    09/04/1981    09/04/1981   749    279    548650
GROSS ACRES       LESSOR   :    LAFOURCHE REALTY COMPANY INC.
137.59900         LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                 EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0003273-001    03/29/1983    03/29/1983   824    679   585751
GROSS ACRES       LESSOR   :    DELMAR D KNOWLES SR
160.00000         LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                 EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0003273-002    03/29/1983    03/29/1983   824    613   585730
GROSS ACRES       LESSOR   :    AUDREY E KNOWLES ET AL
160.00000         LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER
<PAGE>
 
                                   EXHIBIT A                        Page 8 of 64


WELL NAME                                           PARISH/STATE
---------                                           ------------
 
Lafourche Realty Co. #8 Lower CIB CARST             Lafourche/Louisiana
Ruth D. Clow #2 T-1 SD SEG I                        Lafourche/Louisiana
Ruth D. Clow #1 V-3 SD SEG I                        Lafourche/Louisiana
Ruth D. Clow #2 V-2 SD SEG I                        Lafourche/Louisiana
Ruth D. Clow #2 T-7 SD SEG I                        Lafourche/Louisiana
Ruth D. Clow #2 S-2 SD SEG I                        Lafourche/Louisiana
Ruth D. Clow #2 T SD                                Lafourche/Louisiana
Ruth D. Clow #2 T-3 SD                              Lafourche/Louisiana
Ruth D. Clow #2 T-5 SD                              Lafourche/Louisiana
Ruth D. Clow #3 CIB CARST                           Lafourche/Louisiana
Ruth D. Clow #3 V-2 SD SEG I                        Lafourche/Louisiana
Lafourche Realty Co. #A2 V-2 RD SUA                 Lafourche/Louisiana
Lafourche Realty Co. #A2 V-3 SD SEG III             Lafourche/Louisiana
Lafourche Realty Co. #B2 T-7 SD SEG III             Lafourche/Louisiana
Lafourche Realty Co. #B2 R RA SUA                   Lafourche/Louisiana
Lafourche Realty Co. #B2D S-2 SD SEG II             Lafourche/Louisiana
Lafourche Realty Co. #B2D T-1 SD SEG II             Lafourche/Louisiana
H.C. McNeil #6 T-1 SD SEG I                         Lafourche/Louisiana
H.C. McNeil #6D R SD SEG I                          Lafourche/Louisiana
<PAGE>
 
                                   EXHIBIT A                        Page 9 of 64

                               COVERING LANDS IN
                      LAFOURCHE PARISH, STATE OF LOUISIANA



                               EFFECTIVE   CURRENT RECORDING
  PROPERTY NO     LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
1-0001156-001    09/25/1972    09/25/1972   508   249  383445
GROSS ACRES      LESSOR   :    WILLIAM H HARRISON, ET AL
82.44000         LESSOR ID:  
                 LESSEE   :    LYNAL EXPLORATION COMPANY
                 PROSPECT :    LAKE ENFERMER


                               EFFECTIVE   CURRENT RECORDING
  PROPERTY NO     LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
1-0001441-001    08/30/1972    08/30/1972   554   533  416550
GROSS ACRES      LESSOR   :    LAFOURCHE REALTY COMPANY
64.99600         LESSOR ID:  
                 LESSEE   :    ROBERT A CHENOWITH
                 PROSPECT :    LAKE ENFERMER


  RESERVATION AND EXCEPTION:

  LESS AND EXCEPT THOSE PORTIONS OF THE ABOVE LEASES TO THE EXTENT THAT SUCH
  LEASES ARE SITUATED WITHIN THE SURFACE BOUNDARIES OF THE H SAND, RESERVOIR A,
  IN THE LAKE ENFERMER FIELD, LAFOURCHE PARISH, LOUISIANA, AS ESTABLISHED BY
  LOUISIANA OFFICE OF CONSERVATION ORDER NUMBER 340-A DATED JUNE 24, 1974,
  EFFECTIVE MAY 9, 1974 RECORDED IN COB 518, FOLIO 112 UNDER ENTRY NO. 390257;
  AND

  LESS AND EXCEPT THOSE PORTIONS OF THE ABOVE LEASES TO THE EXTENT THAT SUCH
  LEASES ARE SITUATED WITHIN THE SURFACE BOUNDARIES OF THE I RA SUA RESERVOIR A,
  IN THE LAKE ENFERMER FIELD, LAFOURCHE PARISH, LOUISIANA, AS ESTABLISHED BY
  LOUISIANA OFFICE OF CONSERVATION ORDER NUMBER 340-B DATED JUNE 4, 1974,
  EFFECTIVE MAY 9, 1974 RECORDED IN COB 518, FOLIO 116 UNDER ENTRY NO. 390258.
<PAGE>
 
                                   EXHIBIT A                       Page 10 of 64

                               COVERING LANDS IN
                      LAFOURCHE PARISH, STATE OF LOUISIANA



                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-0001441-001    08/30/1972    08/30/1972   554   533  416550
GROSS ACRES       LESSOR   :    LAFOURCHE REALTY COMPANY
64.99600          LESSOR ID:  
                  LESSEE   :    ROBERT A CHENOWETH
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY 

01-0001538-001    11/24/1973    11/24/1973   506   250  382127
GROSS ACRES       LESSOR   :    LAFOURCHE REALTY COMPANY
0.48200           LESSOR ID:  
                  LESSEE   :    LYNAL EXPLORATION COMPANY
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-0002032-001    08/30/1980     08/30/1980  711  616  527528
GROSS ACRES       LESSOR   :    LAFOURCHE REALTY COMPANY
20.62600          LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-0002332-001    11/26/1978     11/26/1978  642   626  480876
GROSS ACRES       LESSOR   :    HAROLD J POTTER ET AL
20.00000          LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER
<PAGE>
 
                                   EXHIBIT A                       Page 11 of 64

                               COVERING LANDS IN
                      LAFOURCHE PARISH, STATE OF LOUISIANA



                                EFFECTIVE    CURRENT RECORDING
  PROPERTY NO     LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0002332-002    11/26/1978   11/26/1978    642    630  480877
GROSS ACRES       LESSOR   :    ROBERT J NEWELL
20.00000          LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                 EFFECTIVE    CURRENT RECORDING
  PROPERTY NO     LEASE DATE       DATE      BOOK   PAGE   ENTRY
 
01-0002332-003    11/26/1978    11/26/1978    642    634  480878
GROSS ACRES       LESSOR   :    DONNA NEWELL WICHSER
20.00000          LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE    CURRENT RECORDING
  PROPERTY NO     LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-002333-001     02/06/1979    02/06/1979    642    618  480874
GROSS ACRES       LESSOR   :    HUGH C MCNEIL, ET AL
20.00000          LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                 EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0002333-002    01/17/1979    01/17/1979    642    622  480875
GROSS ACRES       LESSOR   :    GRACE WELD COLBY, ET AL
20.00000          LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER
<PAGE>
 
                                   EXHIBIT A                       Page 12 of 64

                               COVERING LANDS IN
                      LAFOURCHE PARISH, STATE OF LOUISIANA



                                 EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0002367-001    11/21/1978    11/21/1978   642    602  480870
GROSS ACRES       LESSOR  :     ADRIENNE F FABER
80.00000          LESSOR ID  :
                  LESSEE  :     TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT  :   LAKE ENFERMER


                                 EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0002367-002    11/21/1978    11/21/1978   642    606  480871
GROSS ACRES       LESSOR  :     JUNE R CLAUSE
80.00000          LESSOR ID  :
                  LESSEE  :     TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT  :   LAKE ENFERMER


                                 EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0002367-003    11/25/1978    11/25/1978   642    610  480872
GROSS ACRES       LESSOR  :     DR L PENFIELD FABER
80.00000          LESSOR ID  :
                  LESSEE  :     TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT  :   LAKE ENFERMER


                                 EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0002367-004    11/21/1978    11/21/1978   642    614  480873
GROSS ACRES       LESSOR  :     THOMAS L FASSETT ET AL
80.00000          LESSOR ID  :
                  LESSEE  :     TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT  :   LAKE ENFERMER
<PAGE>
 
                                   EXHIBIT A                       Page 13 of 64

                               COVERING LANDS IN
                      LAFOURCHE PARISH, STATE OF LOUISIANA



                                 EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0002536-001    11/27/1978    11/27/1978   645      1  482083
GROSS ACRES       LESSOR   :    PAUL A DOTY
32.43100          LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                 EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0002536-002    11/27/1978    11/27/1978   645     17  482087
GROSS ACRES       LESSOR   :    MARIAN DOTY GEHLMANN
80.00000          LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                 EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0002536-003    11/27/1978    11/27/1978   645     13  482086
GROSS ACRES       LESSOR   :    DONALD R DOTY
80.00000          LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                 EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0002536-004    11/27/1978    11/27/1978   645      5  482084
GROSS ACRES       LESSOR   :    HELEN G DOTY ET AL
80.00000          LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER
<PAGE>
 
                                   EXHIBIT A                       Page 14 of 64


                               COVERING LANDS IN
                      LAFOURCHE PARISH, STATE OF LOUISIANA



                                 EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0002536-005    11/27/1978    11/27/1978    645      9  482085
GROSS ACRES       LESSOR   :    ROXANN F RHEA
80.00000          LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                 EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0003265-001    11/24/1982    11/24/1982    798     65  573212
GROSS ACRES       LESSOR   :    LAFOURCHE REALTY COMPANY INC
37.00700          LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                 EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0003267-001    06/10/1982    06/10/1982    782    801  566560
GROSS ACRES       LESSOR   :    LAFOURCHE REALTY COMPANY INC
1.92200           LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                 EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0006385-001    11/01/1986    11/01/1986    990    446  669883
GROSS ACRES       LESSOR   :    LAFOURCHE REALTY COMPANY INC
39.48900          LESSOR ID:  
                  LESSEE   :    CSX OIL & GAS CORPORATION
                  PROSPECT :    LAKE ENFERMER
<PAGE>
 
                                   EXHIBIT A                       Page 15 of 64

                               COVERING LANDS IN
                      LAFOURCHE PARISH, STATE OF LOUISIANA



                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-0006413-001    02/01/1987    02/01/1987   992   538  670646
GROSS ACRES       LESSOR   :    LAFOURCHE REALTY COMPANY INC
1.47700           LESSOR ID:  
                  LESSEE   :    CSX OIL & GAS CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-5240702-001    07/15/1992    07/15/1992  1151   608  741660
GROSS ACRES       LESSOR   :    ROBERT J NEWELL
20.00000          LESSOR ID:  
                  LESSEE   :    TOTAL MINATOME CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-5240702-002    07/15/1992    07/15/1992  1152   335  741865
GROSS ACRES       LESSOR   :    RUTH HOLLISTON SANDERS
20.00000          LESSOR ID:  
                  LESSEE   :    TOTAL MINATOME CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-5240708-001    07/15/1992    07/15/1992  1151   746  741711
GROSS ACRES       LESSOR   :    THE ELLEN LUCY MCHUGH TRUST
20.00000          LESSOR ID:  
                  LESSEE   :    TOTAL MINATOME CORPORATION
                  PROSPECT :    LAKE ENFERMER
<PAGE>
 
                                   EXHIBIT A                       Page 16 of 64

                               COVERING LANDS IN
                      LAFOURCHE PARISH, STATE OF LOUISIANA



                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-5240709-001    07/15/1992    07/15/1992  1152   331  741864
GROSS ACRES       LESSOR   :    JANICE DOTY HALL
80.00000          LESSOR ID:  
                  LESSEE   :    TOTAL MINATOME CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-5240709-002    07/15/1992    07/15/1992  1152   339  741866
GROSS ACRES       LESSOR   :    KARL GEHLMANN
80.00000          LESSOR ID:  
                  LESSEE   :    TOTAL MINATOME CORPORATION
                  PROSPECT :    LAKE ENFERMER
<PAGE>
 
                                   EXHIBIT A                       Page 17 of 64

                               COVERING LANDS IN
                      LAFOURCHE PARISH, STATE OF LOUISIANA



                           EFFECTIVE  CURRENT RECORDING
 PROPERTY NO   LEASE DATE    DATE     BOOK  PAGE  ENTRY
 
               01-01/1992
LESSOR  :      LAFOURCHE REALTY COMPANY INC
LESSEE  :      TOTAL MINATOME CORPORATION
PROSPECT:      LAKE ENFERMER


LAFOURCHE REALTY COMPANY, INC. LANDS SITUATED IN LAFOURCHE PARISH, LOUISIANA AND
DESCRIBED AS FOLLOWS, TO-WIT:

12.187 acres, more or less, situated in Sections 7 and 18 of Township 20 South,
Range 23 East and being more particularly described by metes and bounds as
follows:

  Beginning at a point along the intersection of the T-1 RA SUA
  and the R RA SUA having Lambert coordinates
  x = 2,372,047.33
  y = 251,372.78
  thence northwest along the T-1 RA SUA N66d11'9"W 107.58'
  thence S85d06'05"W 286 84'
  thence S44d55'87"W 136.89'
  thence S26d12'00"W 210.64'
  thence S15d03'42"W 311.71'
  thence S10d21'12"W 422.08'
  thence S06d27'01"W 832.00'
  thence S01d58'64"W 632.39'
  thence S00d46'13"E 685.05'
  thence S05d48'02"E 608.05'
  to a point along the intersection of the T-1 RA SUA
  and the R RA SUA
  x = 2,371,245.57
  y = 247,982.78
  thence northwest along the R RA SUA N11d 31'18"W 208.06'
  thence N08d58'24"W 553.30'
  thence N06d37'31"W 526.10'
  thence N02d08'24"E 582.30'
  thence N06d11'81"E 842.83'
  thence N02d19'04"E 420.34'
  thence N09d48'87"E 147.14'
  thence N14d37'15"E 118.85'
  thence N32d16'32"E 112.36'
  thence N52d35'41"E 107.00'
  thence N66d 48'05"E 114.23'
  thence N80d54'35"E 126.59'
  thence S76d30'15"E 128.55'
  thence S65d51'16"E 158.90'
  thence S58d114'46"E 182.87'
  to the Point of Beginning
<PAGE>
 
                                   EXHIBIT A                       Page 18 of 64

THE NOMENCLATURE FOR THE UNITS MENTIONED IN THE ABOVE METES AND BOUNDS ARE MORE
PARTICULARLY DESCRIBED AS FOLLOWS:

R RA SUA ESTABLISHED BY LOUISIANA OFFICE OF CONSERVATION ORDER NO. 340-P-3,
DATED OCTOBER 18, 1983, EFFECTIVE AUGUST 30, 1983, RECORDED COB 840, FOLIO -,
ENTRY NO. 593064.

T-1 RA SUA ESTABLISHED BY LOUISIANA OFFICE OF CONSERVATION ORDER NO. 340-Q-2,
DATED OCTOBER 18, 1983, EFFECTIVE AUGUST 30, 1983, RECORDED COB 840, FOLIO -,
ENTRY NO. 593062.
<PAGE>
 
                                   EXHIBIT A                       Page 19 of 64

                               COVERING LANDS IN
                      LAFOURCHE PARISH, STATE OF LOUISIANA



LAFOURCHE REALTY COMPANY, INC. LANDS SITUATED IN LAFOURCHE PARISH, LOUISIANA AND
DESCRIBED AS FOLLOWS TO-WIT:

ALL THE LANDS WHICH LIE WITHIN THE R RB SUA UNIT AS ESTABLISHED BY THE LOUISIANA
OFFICE OF CONSERVATION ORDER NO. 340-P-3 EFFECTIVE AUGUST 30, 1983, RECORDED IN
BOOK 840, ENTRY NO. 593064, LAFOURCHE PARISH, LOUISIANA, BUT LIE OUTSIDE THE T-1
RB SUA UNIT ESTABLISHED BY THE LOUISIANA OFFICE OF CONSERVATION ORDER NO. 340-Q-
1, EFFECTIVE JUNE 17, 1981, RECORDED IN BOOK 754, FOLIO 341, ENTRY NO. 551518,
LAFOURCHE PARISH, LOUISIANA.
<PAGE>
 
                                   EXHIBIT A                       Page 20 of 64

                               COVERING LANDS IN
                      LAFOURCHE PARISH, STATE OF LOUISIANA


                           EFFECTIVE  CURRENT RECORDING
 PROPERTY NO   LEASE DATE    DATE     BOOK  PAGE  ENTRY
 
               01/01/1992
LESSOR  :      LAFOURCHE REALTY COMPANY INC
LESSEE  :      TOTAL MINATOME CORPORATION
PROSPECT  :    LAKE ENFERMER

LAFOURCHE REALTY COMPANY, INC. LANDS SITUATED IN LAFOURCHE PARISH, LOUISIANA AND
DESCRIBED AS FOLLOWS TO-WIT:
 
TRACT 1:   2.122 acres, more or less, situated in Section 19, Township 20 South,
           Range 23 East, and being more particularly described by metes and
           bounds as follows:

Beginning at a point along the intersection of V-3 RD SU A and
V 2 RO SU A having Lambert coordinates
x = 2,378,160.00
y = 243,410.00
thence Southwest along the V-2 RD SU A S13d23'33"E 215.87
thence S08d06'25"E 263.10
thence S03d10'47"E 180.28
thence S07d07'30"W 241.87' to a point along the intersection of the V-2 RD SU A
and the V-3 RD SU A having Lambert coordinates
x = 2,378,220.00
y = 242,630.00
thence Northeast along the V-3 RD SU A N00d00'02"E 270.00'
thence N06d32'47"W 614.00' to the point of beginning.

TRACT 2:   .458 acres, more or less, situated in Section 20, Township 20 South,
           Range 23 East, and being more particularly described by metes and
           bounds as follows:

Beginning at a point along the intersection of the V-3 RD SU A and
the V-2 RD SU A having Lambert coordinates
x = 2,374,776.92
y = 240,647.10
thence Southwest along the V-3 RD SU A S01d19'34"W 566.03' to the intersection
of the V-2 RD SU A and the V-3 RD SU A having Lambert coordinates
x = 2,374,763.85
y = 240,082.22
thence Northwestward along the V-2 RD SU A N83'd59'28"W 328.35'
to a point having Lambert coordinates
x = 2,374,437.31
y = 240,116.89
thence Northeast N02d37'35"W 629.91' to the point of beginning

THE NOMENCLATURE FOR THE UNITS MENTIONED IN THE ABOVE METES AND BOUNDS
DESCRIPTION ARE MORE PARTICULARLY DESCRIBED AS FOLLOWS:

V-2 RD SUA ESTABLISHED BY LOUISIANA OFFICE OF CONSERVATION ORDER NO. 340-T-4,
DATED JULY 1985, EFFECTIVE MAY 7, 1985, RECORDED COB 918, FOLIO 756, ENTRY NO.
631920, RECORDS LAFOURCHE PARISH, LOUISIANA.
<PAGE>
 
                                   EXHIBIT A                     Page 21 of 64

V-3 RD SUA ESTABLISHED BY LOUISIANA OFFICE OF CONSERVATION ORDER NO. 340-S-4,
DATED JULY 1985, EFFECTIVE MAY 7, 1985, RECORDED COB 918, FOLIO 760, ENTRY NO.
631921, RECORDS LAFOURCHE PARISH, LOUISIANA.
<PAGE>
 
                                   EXHIBIT A                     Page 22 of 64


WELL NAME                                   PARISH/STATE
---------                                   ------------
 
Harrison #3 L RA SUA                     Lafourche/Louisiana
Harrison #4 ALT L RA SUA                 Lafourche/Louisiana
Harrison #4 L RA SUA                     Lafourche/Louisiana
Harrison #4D UL RA SUA                   Lafourche/Louisiana
Lafourche Realty Co. #3 0-2 RA           Lafourche/Louisiana
Lafourche Realty Co. #4 D-1 RA SUA       Lafourche/Louisiana
Lafourche Realty Co. #4D C-2 RA          Lafourche/Louisiana
Lafourche Realty Co. #7 V-3 SD SEG II    Lafourche/Louisiana
Lafourche Realty Co. #7 V-2 SD SEG II    Lafourche/Louisiana
Lafourche Realty Co. #8 V-4 SD           Lafourche/Louisiana
Lafourche Realty Co. #8 T-7 RC SUA       Lafourche/Louisiana
Lafourche Realty Co. #8 T-8 SD           Lafourche/Louisiana
<PAGE>
 
                                   EXHIBIT A                     Page 23 of 64

                               COVERING LANDS IN
                      LAFOURCHE PARISH, STATE OF LOUISIANA



                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-0001328-001    12/18/1972    12/18/1972   483   510  363827
GROSS ACRES       LESSOR   :    STATE OF LOUISIANA
200.03500         LESSOR ID:    6024
                  LESSEE   :    LYNAL EXPLORATION COMPANY
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-0001535-001    05/13/1974    05/13/1974   514   581  388122
GROSS ACRES       LESSOR   :    STATE OF LOUISIANA
1.58700           LESSOR ID:    6301
                  LESSEE   :    TEXAS GAS EXPLORATION
                                CORPORATION
                                ET AL
                  PROSPECT :    LAKE ENFERMER



  RESERVATION AND EXCEPTION:

  LESS AND EXCEPT THOSE PORTIONS OF THE ABOVE LOUISIANA STATE LEASES TO THE
  EXTENT THAT SUCH LEASES ARE SITUATED WITHIN THE SURFACE BOUNDARIES OF THE
  UPPER L SAND, RESERVOIR A, IN THE LAKE ENFERMER FIELD, LAFOURCHE PARISH,
  LOUISIANA, AS ESTABLISHED BY LOUISIANA OFFICE OF CONSERVATION ORDER NUMBER
  340-K DATED MARCH 4, 1976, EFFECTIVE MARCH 1, 1976 RECORDED IN COB 560, FOLIO
  83__ UNDER ENTRY NO. 421706.
<PAGE>
 
                                   EXHIBIT A                     Page 24 of 64

                               COVERING LANDS IN
                      LAFOURCHE PARISH, STATE OF LOUISIANA



                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-0002707-001    11/19/1979    11/19/1979   685   663  511082
GROSS ACRES       LESSOR   :    STATE OF LOUISIANA
110.29500         LESSOR ID:    8403
                  LESSEE   :    S W PLAUCHE' III
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-0001156-001    09/25/1972    09/25/1972   508   249  383445
GROSS ACRES       LESSOR   :    WILLIAM H HARRISON, ET AL
82.44000          LESSOR ID:  
                  LESSEE   :    LYNAL EXPLORATION COMPANY
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-0001441-001    08/30/1972    08/30/1972   554   533  416550
GROSS ACRES       LESSOR   :    LAFOURCHE REALTY COMPANY
64.99600          LESSOR ID:  
                  LESSEE   :    ROBERT A CHENOWETH
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-0003274-001    04/15/1984    04/15/1984   873   488  610333
GROSS ACRES       LESSOR   :    RICHARD JOSEPH HARRISON
13.02525          LESSOR ID:  
                  LESSEE   :    KENNETH SAVAGE
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-0003274-002    04/15/1984    04/15/1984   873   440  610329
GROSS ACRES       LESSOR   :    SHIRLEY HARRISON HYDE
13.02525          LESSOR ID:  
                  LESSEE   :    KENNETH SAVAGE
                  PROSPECT :    LAKE ENFERMER
<PAGE>
 
                                   EXHIBIT A                     Page 25 of 64

                               COVERING LANDS IN
                      LAFOURCHE PARISH, STATE OF LOUISIANA



                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-0003274-003    04/15/1984    04/15/1984   873   464  610331
GROSS ACRES       LESSOR   :    KATHERINE LORETTA HARRISON
13.02525          LESSOR ID:  
                  LESSEE   :    KENNETH SAVAGE
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-0003274-004    04/15/1984    04/15/1984   873   476  610332
GROSS ACRES       LESSOR   :    LYDIA HARRISON RYAN
13.02525          LESSOR ID:  
                  LESSEE   :    KENNETH SAVAGE
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-0003274-005    04/15/1984    04/15/1984   873   452  610330
GROSS ACRES       LESSOR   :    THE WILLIAM HARRISON JR FAMILY
                                PROJECT
13.02525          LESSOR ID:  
                  LESSEE   :    KENNETH SAVAGE
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-0005936-001    04/01/1986    04/01/1986   949   196  648110
GROSS ACRES       LESSOR   :    LYDIA HARRISON RYAN
2.48700           LESSOR ID:  
                  LESSEE   :    KENNETH SAVAGE
                  PROSPECT :    LAKE ENFERMER
<PAGE>
 
                                   EXHIBIT A                     Page 26 of 64

                               COVERING LANDS IN
                      LAFOURCHE PARISH, STATE OF LOUISIANA



                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-0005936-002    04/01/1986    04/01/1986   949   184  648109
GROSS ACRES       LESSOR   :    THE WILLIAM HARRISON JR FAMILY
                                PROJECT A PTNSHP
2.48700           LESSOR ID:  
                  LESSEE   :    KENNETH SAVABE
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-0005936-003    04/01/1986    04/01/1986   949   172  648108
GROSS ACRES       LESSOR   :    SHIRLEY HARRISON HYDE
2.48700           LESSOR ID:  
                  LESSEE   :    KENNETH SAVAGE
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-0005936-004    04/01/1986    04/01/1986   949   148  648106
GROSS ACRES       LESSOR   :    RICHARD JOSEPH HARRISON
2.48700           LESSOR ID:  
                  LESSEE   :    KENNETH SAVAGE
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-0005936-005    04/01/1986    04/01/1986   949   160  648107
GROSS ACRES       LESSOR   :    KATHERINE LORETTA HARRISON
2.48700           LESSOR ID:  
                  LESSEE   :    KENNETH SAVAGE
                  PROSPECT :    LAKE ENFERMER


  RESERVATION AND EXCEPTION:

  LESS AND EXCEPT THOSE PORTIONS OF THE ABOVE LOUISIANA STATE LEASES TO THE
  EXTENT THAT SUCH LEASES ARE SITUATED WITHIN THE SURFACE BOUNDARIES OF THE
  UPPER L SAND, RESERVOIR A, IN THE LAKE ENFERMER FIELD, LAFOURCHE PARISH,
  LOUISIANA, AS ESTABLISHED BY LOUISIANA OFFICE OF CONSERVATION ORDER NUMBER
  340-K DATED MARCH 4, 1976, EFFECTIVE MARCH 1, 1976 RECORDED IN COB 560, FOLIO
  830 UNDER ENTRY NO. 421706.
<PAGE>
 
                                   EXHIBIT A                     Page 27 of 64

WELL NAME                                                 PARISH/STATE
---------                                                 ------------
 
Harrison #2 I RA SUA                                   Lafourche/Louisiana
Harrison #2D H RA                                      Lafourche/Louisiana
Harrison #5 H RC (well bore only)                      Lafourche/Louisiana
Harrison #6 ALT L-1 SD                                 Lafourche/Louisiana
Harrison #6 H-1 RB                                     Lafourche/Louisiana
Harrison #6 G-1 RA SUA                                 Lafourche/Louisiana
Harrison #6 H RA                                       Lafourche/Louisiana
Harrison #6D K SD                                      Lafourche/Louisiana
Lafourche Realty Co. #1 O RA                           Lafourche/Louisiana
Lafourche Realty Co. #1 M RA                           Lafourche/Louisiana
Lafourche Realty Co. #1 I RA SUA                       Lafourche/Louisiana
Lafourche Realty Co. #1D N RA                          Lafourche/Louisiana
Lafourche Realty Co. #2 H RB (well bore only)          Lafourche/Louisiana
Lafourche Realty Co. #2 ALT H-1 RA                     Lafourche/Louisiana
Lafourche Realty Co. #5 C-3 RA SUA (well bore only)    Lafourche/Louisiana
Lafourche Realty Co. #5 B RA (well bore only)          Lafourche/Louisiana
Lafourche Realty Co. #6 J SD (well bore only)          Lafourche/Louisiana
<PAGE>
 
                                   EXHIBIT A                     Page 28 of 64

                                     UNITS


1.   T-1 RB SUA as created by Louisiana Office of Conservation Order No. 340-Q-1
     effective June 17, 1981;

2.   R RA SU A as revised by Louisiana Office of Conservation Order No. 340-P-3
     effective August 30, 1983;

3.   T-7 RC SUA as created by Louisiana Office of Conservation Order No. 340-W
     effective August 30, 1983;

4.   V-2 RD SUA as created by Louisiana Office of Conservation Order No. 340-T-4
     effective May 7, 1985;

5.   R RB SU A as revised by Louisiana Office of Conservation Order No. 340-P-3
     effective August 30, 1983;

6.   Cib Carst RB SUA as created by Louisiana Office of Conservation Order No.
     340-U-1 effective October 23, 1984;

7.   L RA SUA as revised by Louisiana Office of Conservation Order No. 340-F-1
     effective March 1, 1976;

8.   T-1 RA SUA as revised by Louisiana Office of Conservation Order No. 340-Q-2
     effective  August 30, 1983;

9.   H RA SUA as created by Louisiana Office of Conservation Order No. 340-A
     effective May 9, 1974;

10.  I RA SUA as created by Louisiana Office of Conservation Order No. 340-B
     effective May 9, 1974.
<PAGE>
 
                                   EXHIBIT A                     Page 29 of 64


                                   WORKING   NET REVENUE
EXHIBIT "A" & "A-2" WELLS          INTEREST   INTEREST
-------------------------          --------  -----------
 
#2 CLOW T-1 RB SUA                 .5964447     .4407330
#B-2d LAFOURCHE REALTY R RA SUA    .5664751     .4274966
#6-D HARRISON G
#2 CLOW T-1 UPPER                  .5654470     .4217100
#8 LAFOURCHE T-7 RC SUA            .8620380     .6165744
#A-2 LAFOURCHE V-2                 .5352910     .4000000
#6-D H.C. MCNEIL R-RB SUA          .5979900     .4471250
#6-D HARRISON F
GRAHAM #8 LAFOURCHE CIB CARST      .0151260     .0121648
#6-D MCNEIL R HIGHER               .5979900     .4471250


                                   WORKING   NET REVENUE 
EXHIBIT "A1" WELLS                 INTEREST   INTEREST   
------------------                 --------  ----------- 
                                                         
#3 HARRISON L RA SUA                .733750     .5466550 
#4 HARRISON L RA SUA                .733750     .5466550  
<PAGE>
 
                                   EXHIBIT A                     Page 30 of 64


                    OIL, GAS AND MINERAL LEASES - LAFOURCHE
              CROSSING FIELD PROSPECT, LAFOURCHE PARISH, LOUISIANA

                                                              CONVEYANCE RECORDS
                                                                    OF LAFOURCHE
                                                               PARISH, LOUISIANA



                 LESSOR                                  LEASE DATE   ENTRY NO.
 
Dixon H. Cain, et ux                                      04/01/89     697209
American Cancer Society, Louisiana Division, Inc.         04/01/89     700119
Roland von Kurnatowski                                    04/01/89     700120
Evelyn von Kurnatowski Benham                             04/01/89     700121
Clarence C. Clifton, Jr., et al                           04/01/89     700122
Mary Cobb Black                                           04/06/89     700123
Ethel L. McDermott, et als                                04/01/89     700124
Jean D. Babel, et vir                                     04/01/89     700125
Margaret D. Hunter, et vir                                04/01/89     700126
Louise Ash Smaizys                                        04/01/89     700127
B. William Payne, et als                                  04/01/89     700128
Clara Louise Hagge, et vir                                04/01/89     700129
W. Ridley Wheeler Estate                                  04/01/89     700130
Mary Jane Brown Courtney                                  04/27/89     700131
Lois Plummer Wachter                                      04/01/89     700132
B. Wendell Phillips, et ux                                04/01/89     700133
Viola Shenk Branton                                       04/01/89     700134
Judy Branton Wilkins                                      04/01/89     700135
Paul Shenk, Jr.                                           04/01/89     700136
May Ayo Peltier, et als                                   04/01/89     700137
Emilio Alfredo Martinez, et als                           04/01/89     700138
Nora Martinez Oliver                                      04/01/89     700139
Maria Martinez Bussmann                                   04/01/89     700140
First National Bank of Commerce, as Agent & Atty-in-
 Fact for Berta Paulina Contreras, Elvira Maria
 Contreras, and Maria de Los Angeles Contreras            04/01/89     700141
Donald G. Robichaux, et ux                                04/01/89     700142
Donald G. Robichaux, et ux                                04/14/89     700143
Donald G. Robichaux, et ux                                04/01/89     700144
Lynn P. Thibodeaux, et ux                                 05/10/89     700145
Algy Irvin, Sr., et ux                                    05/10/89     700146
Emilio Alfredo Martinez, et als                           04/01/89     700147
Nora Martinez Oliver                                      04/01/89     700148
Maria Martinez Bussman                                    04/01/89     700149
First National Bank of Commerce, as Agent & Atty-in-
 Fact for Berta Paulina Contreras, Elvira Maria
 Contreras, and Maria de Los Angeles Contreras            04/01/89     700150
Francis Dugas, et als                                     04/01/89     700151
Donald G. Robichaux, et ux                                04/01/89     700152
Emily Baudoin Eroche, et als                              04/01/89     700152
May Ayo Peltier, et als                                   04/01/89     700154
Hubert L. Brown, Jr.                                      06/23/89     700715
<PAGE>
 
                                   EXHIBIT A                       Page 31 of 64

                                                              CONVEYANCE RECORDS
                                                                    OF LAFOURCHE
                                                               PARISH, LOUISIANA


             LESSOR                                    LEASE DATE    ENTRY NO.
 
American Cancer Society, Louisiana Division, Inc.        03/15/84     603761
Louise Ash Smaizys                                       03/30/84     603762
Evelyn von Kurnatowski Benham                            03/30/84     603763
W. Ridley Wheeler Estate                                 03/30/84     604533
Clarence C. Clifton, Jr., et al                          03/30/84     604532
Roland von Kurnatowski                                   03/30/84     604534
Paul Shenk, Jr.                                          03/30/84     609218
Truman Branton                                           03/30/84     609220
B. Wendell Phillips, et ux                               03/30/84     609436
Clarebelle Housh                                         03/30/84     609219
Ethel L. McDermott, et als                               03/30/84     609221
Hibernia National Bank of New Orleans, Trustee for       04/13/84     609222
 Mireille Leibreton Cobb and Trustee for Mireille
 Lebreton Cobb and Mary Cobb Black
Lois Plummer Wachter                                     03/30/84     611323
Emilio Alfredo Martinez, et als                          01/01/84     603754
Dixon H. Cain, et ux                                     02/01/84     603769
Donald G. Robichaux, et ux                               02/01/84     603755
May Ayo Peltier, et als                                  02/01/84     603760
David J. Robichaux, et ux                                04/26/84     604581
Succession of Lupita Echeverria Martinez                 07/01/84     613853
Mary Jane Brown Courtney                                 01/01/85     624879
Hubert L. Brown, Jr.                                     02/15/85     625253
B. William Payne, et als                                 12/01/84     625254
Frances G. Thompson, et al                               12/01/84     625252
Clara Louise Hagge, et vir                               12/01/84     631753


     The above described leases INSOFAR AND ONLY INSOFAR as they cover the
following described property:

     That portion of the Brock Exploration Corporation, 10,180' RB SU A, L.
     Martinez No. 1, created by Conservation Department Order No. 63-J-1,
     effective June 25, 1985, recorded under Entry No. 631793, records of
     Lafourche Parish, Louisiana, falling within the Germany Operating Company,
     9,630' RA SU A, Matherne No. 1, created by Conservation Department Order
     No. 63-L, effective January 10, 1989, recorded under Entry No. 693985,
     records of Lafourche Parish, Louisiana, INSOFAR AND ONLY INSOFAR as the
     depth below the productive 9,630' zone, is concerned, and limited to one
     hundred feet (100') below the deepest producing horizon on or before April
     1, 1990. There is also expected herefrom, any and all production derived
     from the above mentioned Germany Operating Company, 9,630' RA SU A Matherne
     No. 1 Unit.

     The above described tract contains approximately 5,337 acres, more or less.
<PAGE>
 
                                   EXHIBIT A                      Page 32 of 64


                                                              CONVEYANCE RECORDS
                                                                    OF LAFOURCHE
                                                               PARISH, LOUISIANA


LESSOR                                             LEASE DATE  ENTRY NO.
                            
Sadie Fagot Peter, et als                            04/15/84     609215
A.G. Fagot                                           04/15/84     609216
Robert Fagot                                         04/15/84     609217
Wilfred C. Fagot                                     04/15/84     610888
Caryl C. Fagot, et als                               11/01/85     641119

     INSOFAR AND ONLY INSOFAR as the above leases covering the following
described property:

TRACT NO. 1:  A certain tract of land situated in Sections 133 and 134, Township
15 South, Range 17 East, Lafourche Parish, Louisiana, being more particularly
described as follows: Beginning at the Northeast corner of Section 133 having
Lambert Plane Coordinates X=2,185,757.27 and Y=389,661.91 go S1327'14"W along
East line of section approximately 330', more or less, to the point of
beginning, thence S1327; 14" W 4,000' along East line of Section 133 to a point
being the Southeast corner of said tract; thence at a right angle West-Northwest
1,600' to a point being the Southwest corner of said tract; thence N1322'40"E
4,000' to a point being the Northwest corner of said tract; thence East-
Southeast 1,600' at an angle and bearing common to the South line of said tract
to the point of beginning estimated to contain 146 acres, more or less.  LESS
AND EXCEPT:
Approximately 18.5 acres, more or less, within the 9,630' RA SUA, Matherne No.
1, created by Department of Conservation Order No. 63-L, effective January 13,
1989, recorded under Entry No. 693985, records of Lafourche Parish, Louisiana.

The above described tract of land contains 127.5 acres, more or less.

TRACT NO. 2:  That portion of the Brock Exploration Corporation, 10,180' RB SU
A, L. Martinez No. 1, created by Conservation Department Order No. 63-J-1,
effective June 25, 1985, recorded under Entry No. 631793, records of Lafourche
Parish, Louisiana, falling within the Germany Operating Company, 9630' RA SU A,
Matherne No. 1, created by Conservation Department Order No. 63-L, effective
January 10, 1989, recorded under Entry No. 693985, records of Lafourche Parish,
Louisiana, INSOFAR AND ONLY INSOFAR as the depth below the productive 9630'
zone, is concerned.

There is expressly excepted herefrom, any and all production derived from the
above mentioned Germany Operating Company, 9630' RA SU A, Matherne No. 1 Unit.

The hereinabove described tract contains approximately 5.337 acres, more or
less.
<PAGE>
 
                                  EXHIBIT A                       Page 33 of 64 

                                                              CONVEYANCE RECORDS
                                                                    OF LAFOURCHE
                                                               PARISH, LOUISIANA
 
LESSOR                                              LEASE DATE  ENTRY NO.
                               
Thompson Limited                                      08/01/89     702764
The Azby Fund, et al                                  08/25/89     702765
David J. Robichaux, Jr., et ux                        08/01/89     705190
David J. Robichaux, Jr., et ux                        08/01/89     705191
David J. Robichaux, Jr., et ux                        08/01/90     705189

     INSOFAR AND ONLY INSOFAR AS TO THAT PORTION OF ALL OF THE OIL, GAS AND
MINERAL LEASES DESCRIBED ABOVE ARE INCLUDED WITHIN THE 9,850' RB SU A CREATED BY
THE LOUISIANA OFFICE OF CONSERVATION ORDER 63-E-1, RECORDED IN CONVEYANCE BOOK
1077, FOLIO 114, ENTRY NO. 710980, THE SURVEY PLAT OF SUCH UNIT BEING RECORDED
IN CONVEYANCE sBOOK 1082, FOLIO 529, ENTRY NO. 713460, ALL IN THE RECORDS OF
LAFOURCHE PARISH, LOUISIANA AND INSOFAR AND ONLY INSOFAR AS THESE OIL, GAS AND
MINERAL LEASES COVER THE RIGHTS DOWN TO THE DEPTH OF 10,002 FEET BELOW THE
SURFACE OF THE EARTH.

     FORMAN PETROLEUM CORPORATION'S INTEREST:

          UNIT OPERATING INTEREST        15.000000%
          UNIT REVENUE INTEREST          11.313022%
<PAGE>
 
                                   EXHIBIT A                      Page 34 of 64

                                  EXHIBIT "A"
                                      TO
                                ACT OF MORTGAGE
                         FORMAN PETROLEUM CORPORATION
                                      TO
            JOINT ENERGY DEVELOPMENT INTERESTS LIMITED PARTNERSHIP


1.   The following Exhibit "A" consists of Pages Nos. 1 through ___, inclusive.

2.   The recording references in Exhibit "A", Pages 1-44 are the Conveyance
     Records of LaFourche Parish, Louisiana.

3.   The recording references in Page 59 of Exhibit "A" are to the records of
     Terrebonne Parish, Louisiana.
<PAGE>
 
                                   EXHIBIT A                       Page 35 of 64

<TABLE>
<CAPTION>
                                                                         RECORDED
LESSOR                                      LESSEE             DATED    COB   PAGE  ENTRY #
 
<S>                               <C>                         <C>       <C>   <C>   <C>
Robert J. Newell                  Total Minatome Corporation  07/15/92  1151   608   741660
Ruth Holliston Sanders            Total Minatome Corporation  07/15/92  1152   335   741865
Donna J. Wichser                  Total Minatome Corporation  07/15/92  1155    58   742881
Marjorie Reynolds                 Total Minatome Corporation  07/15/92  1156   444   743501
Thomas Potter                     Total Minatome Corporation  07/15/92  1156   453   743506
Thomas L. Fassett                 Total Minatome Corporation  07/15/92  1158   268   744471
Willard Fassett                   Total Minatome Corporation  07/15/92  1158   264   744470
Richard Fassett                   Total Minatome Corporation  07/15/92  1158   260   744469
The Adrienne F. Faber Trust       Total Minatome Corporation  07/15/92  1158   256   744468
L. Penfield Faber                 Total Minatome Corporation  07/15/92  1158   252   744467
Janice Doty Hall                  Total Minatome Corporation  07/15/92  1152   331   741864
Karl Gehlmann                     Total Minatome Corporation  07/15/92  1152   339   741866
Donald R. Doty                    Total Minatome Corporation  07/15/92  1156   449   743505
Paul A. Doty III and Donald J.    Total Minatome Corporation  07/15/92  1156   549   743565
 Doty
Roxann F. Rhea                    Total Minatome Corporation  07/15/92  1156   680   743653
The Ellen Lucy McHugh Trust       Total Minatome Corporation  07/15/92  1151   746   741711
June R. Claus                     Total Minatome Corporation  07/15/92  1167   368   748541
LaFourche Realty Company,         Total Minatome Corporation  01/01/92  1179         754010
 Inc.
LaFourche Realty Company,         Total Minatome Corporation  01/01/92  1179         754011
 Inc.
</TABLE>


That certain Operating Agreement providing a Carried Interest to State effective
January 11, 1978 between the State Mineral Board, for and on behalf of the State
of Louisiana, and Texas Gas Exploration Corporation, Lynal Exploration Company,
Tesoro Petroleum Corporation, Samedan Oil Corporation, Oppenheimer Oil & Gas,
Inc., McMoRan Exploration Co. and Natomas Exploration, Inc., referred to
collectively as Operator, recorded in the Conveyance Records of Lafourche
Parish, Louisiana on January 19, 1978, in Book 616 under Entry Nos. 463367,
463368, 463369, 463370, 463371, 463372, and 463373.

<TABLE>
<CAPTION>
NO.              LESSOR                          LESSEE                 DATE       COB   FOLIO  ENTRY
                                                                                                 NO.
 
<C>  <S>                              <C>                           <C>            <C>   <C>    <C>
 1.  LAFOURCHE REALTY COMPANY         FORMAN PETROLEUM CORPORATION  SEPT. 1, 1993  1179         754012
 2.  LAFOURCHE REALTY COMPANY         FORMAN PETROLEUM CORPORATION  SEPT. 5, 1993  1179         754013
 3.  LAFOURCHE REALTY CO., INC.       TOTAL MINATOME CORPORATION    JAN. 1, 1992   1179         754010
 4.  LAFOURCHE REALTY CO., INC.       TOTAL MINATOME CORPORATION    JAN. 1, 1992   1179         754011
 5.  DONNA J. WICHSER                 TOTAL MINATOME CORPORATION    JULY 15, 1992  1155     58  742881
 6.  MARJORIE REYNOLDS                TOTAL MINATOME CORPORATION    JULY 15, 1992  1156    444  743501
 7.  THOMAS POTTER                    TOTAL MINATOME CORPORATION    JULY 15, 1992  1156    453  743506
 8.  ADRIENNE F. FABER TRUST, THE,
     U/W                              TOTAL MINATOME CORPORATION    JULY 15, 1992  1158    256  744468
 
 9.  JUNE R. CLAUS                    TOTAL MINATOME CORPORATION    JULY 15, 1992  1167    368  748541
10.  L. PENFIELD FABER                TOTAL MINATOME CORPORATION    JULY 15, 1992  1158    252  744467
11.  THOMAS L. FASSETT                TOTAL MINATOME CORPORATION    JULY 15, 1992  1158    268  744471
12.  WILLARD FASSETT                  TOTAL MINATOME CORPORATION    JULY 15, 1992  1158    264  744470
13.  RICHARD FASSETT                  TOTAL MINATOME CORPORATION    JULY 15, 1992  1158    260  744469
14.  PAUL A. DOTY, III, ET AL         TOTAL MINATOME CORPORATION    JULY 15, 1992  1156    549  743565
15.  DONALD R. DOTY                   TOTAL MINATOME CORPORATION    JULY 15, 1992  1156    449  743505
16.  ROXANN F. RHEA                   TOTAL MINATOME CORPORATION    JULY 15, 1992  1156    680  743653
17.  SHIRLEY HARRISON HYDE, ET AL     FORMAN PETROLEUM CORPORATION  JAN. 1, 1993   1170         750093
18.  WILLIAM HARRISON, ET AL          FORMAN PETROLEUM CORPORATION  JAN. 1, 1993   1170         750092
19.  PATRICK J. HARRISON ESTATE       FORMAN PETROLEUM CORPORATION  JAN. 1, 1993   1173         751174
20.  GLORIA K. FERRERA, ET AL         FORMAN PETROLEUM CORPORATION  JAN. 1, 1993   1170         750091
21.  ANN V. PENMAN REVOCABLE
     TRUST, THE, ET AL                FORMAN PETROLEUM CORPORATION  JULY 15, 1993  1173    241  751233
 
22.  THE ALLEN COMPANY                FORMAN PETROLEUM CORPORATION  MARCH 1, 1993  1171         750581
23.  LAFOURCHE REALTY COMPANY,
     INC.                             FORMAN PETROLEUM CORPORATION  OCT. 1, 1993   1189    348  757789
 
</TABLE>
<PAGE>
 
                                   EXHIBIT A                       Page 36 of 64



                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-0001156-001    09/25/1972    09/25/1972   508   249  383445
GROSS ACRES       LESSOR   :    WILLIAM H. HARRISON, ET AL
  82.44000        LESSOR ID:  
                  LESSEE   :    LYNAL EXPLORATION COMPANY
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-0001441-001    08/30/1972    08/30/1972   554   533  416550
GROSS ACRES       LESSOR   :    LAFOURCHE REALTY COMPANY
  64.99600        LESSOR ID:  
                  LESSEE   :    ROBERT A. CHENOWETH
                  PROSPECT :    LAKE ENFERMER


RESERVATION AND EXCEPTION:

LESS AND EXCEPT THOSE PORTIONS OF THE ABOVE LEASES TO THE EXTENT THAT SUCH
LEASES ARE SITUATED WITHIN THE SURFACE BOUNDARIES OF THE H SAND, RESERVOIR A, IN
THE LAKE ENFERMER FIELD, LAFOURCHE PARISH, LOUISIANA, AS ESTABLISHED BY
LOUISIANA OFFICE OF CONSERVATION ORDER NUMBER 340-A DATED JUNE 4, 1974,
EFFECTIVE MAY 9, 1974 RECORDED IN COB 518, FOLIO 116 UNDER ENTRY NO. 390___ AND

LESS AND EXCEPT THOSE PORTIONS OF THE ABOVE LEASES TO THE EXTENT THAT SUCH
LEASES ARE SITUATED WITHIN THE SURFACE BOUNDARIES OF THE I RA SUA RESERVOIR A,
IN THE LAKE ENFERMER FIELD, LAFOURCHE PARISH, LOUISIANA, AS ESTABLISHED BY
LOUISIANA OFFICE OF CONSERVATION ORDER NUMBER 340-B DATED  JUNE 4, 1974,
EFFECTIVE MAY 9, 1974 RECORDED IN COB 518, FOLIO 116 UNDER ENTRY NO. 390258.

                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-0001441-001    08/30/1972    08/30/1972   554   533  416550
GROSS ACRES       LESSOR   :    LAFOURCHE REALTY COMPANY
  64.99600        LESSOR ID:  
                  LESSEE   :    ROBERT A. CHENOWETH
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-0001538-001    11/24/1973    11/24/1973   506   250  382127
GROSS ACRES       LESSOR   :    LAFOURCHE REALTY COMPANY
  0.48200         LESSOR ID:  
                  LESSEE   :    LYNAL EXPLORATION COMPANY
                  PROSPECT :    LAKE ENFERMER
<PAGE>
 
                                   EXHIBIT A                       Page 37 of 64


                                 EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0002032-001    08/30/1980    08/30/1980    711    616  527528
GROSS ACRES       LESSOR   :    LAFOURCHE REALTY COMPANY
  20.62600        LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                 EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0002332-001    11/26/1978    11/26/1978    642    626  480876
GROSS ACRES       LESSOR   :    HAROLD J POTTER ET AL
  20.00000        LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                 EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0002332-002    11/26/1978    11/26/1978    642    630  480877
GROSS ACRES       LESSOR   :    ROBERT J NEWELL
  20.00000        LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                 EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0002332-003    11/26/1978    11/26/1978    642    634  480878
GROSS ACRES       LESSOR   :    DONNA NEWELL WICHSER
  20.00000        LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                 EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0002333-001    02/06/1979    02/06/1979    642    618  480874
GROSS ACRES       LESSOR   :    HUGH C MCNEIL, ET AL
  20.00000        LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER
<PAGE>
 
                                   EXHIBIT A                       Page 38 of 64



                                 EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0002333-002    01/17/1979    01/17/1979    642    622  480875
GROSS ACRES       LESSOR   :    GRACE WELD COLBY, ET AL
20.00000          LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                 EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0002367-001    11/21/1978    11/21/1978    642    602  480870
GROSS ACRES       LESSOR   :    ADRIENNE F FABER
  80.00000        LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                 EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0002367-002    11/21/1978    11/21/1978    642    606  480871
GROSS ACRES       LESSOR   :    JUNE R CLAUSE
  80.00000        LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                 EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0002367-003    11/25/1978    11/25/1978    642    610  480872
GROSS ACRES       LESSOR   :    DR L PENFIELD FABER
  80.00000        LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                 EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0002367-004    11/21/1978    11/21/1978    642    614  480873
GROSS ACRES       LESSOR   :    THOMAS L. FASSETT ET AL
  80.00000        LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER
<PAGE>
 
                                   EXHIBIT A                      Page 39 of 64



                                 EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0002536-001    11/27/1978    11/27/1978    645      1  482083
GROSS ACRES       LESSOR   :    PAUL A DOTY
  32.43100        LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                 EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0002536-002    11/27/1978    11/27/1978    645     17  482087
GROSS ACRES       LESSOR   :    MARIAN DOTY GEHLMANN
  80.00000        LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                 EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0002536-003    11/27/1978    11/27/1978    645     13  482086
GROSS ACRES       LESSOR   :    DONALD R. DOTY
  80.00000        LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                 EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0002536-004    11/27/1978    11/27/1978    645      5  482084
GROSS ACRES       LESSOR   :    HELEN G DOTY ET AL
  80.00000        LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                 EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0002536-005    11/27/1978    11/27/1978    645      9  482085
GROSS ACRES       LESSOR   :    ROXANN F RHEA
  80.00000        LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER
<PAGE>
 
                                   EXHIBIT A                       Page 40 of 64

                                EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0003265-001    11/24/1982    11/24/1982    798     65  573212
GROSS ACRES       LESSOR   :    LAFOURCHE REALTY COMPANY INC
  37.00700        LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE    CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE      BOOK   PAGE   ENTRY
 
01-0003267-001    06/10/1982    06/10/1982    782    801  566560
GROSS ACRES       LESSOR   :    LAFOURCHE REALTY COMPANY INC
  1.92200         LESSOR ID:  
                  LESSEE   :    TEXAS GAS EXPLORATION CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-0006385-001    11/01/1986    11/01/1986   990   446  669883
GROSS ACRES       LESSOR   :    LAFOURCHE REALTY COMPANY INC
  39.48900        LESSOR ID:  
                  LESSEE   :    CSX OIL & GAS CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-0006413-001    02/01/1987    02/01/1987   992   538  670646
GROSS ACRES       LESSOR   :    LAFOURCHE REALTY COMPANY INC
  1.47700         LESSOR ID:  
                  LESSEE   :    CSX OIL & GAS CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-5240702-001    07/15/1992    07/15/1992  1151   608  741660
GROSS ACRES       LESSOR   :    ROBERT J NEWELL
  20.00000        LESSOR ID:  
                  LESSEE   :    TOTAL MINATOME CORPORATION
                  PROSPECT :    LAKE ENFERMER
<PAGE>
 
                                   EXHIBIT A                       Page 41 of 64



                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-5240702-002    07/15/1992    07/15/1992  1152   335  741865
GROSS ACRES       LESSOR   :    RUTH HOLLISTON SANDERS
  20.00000        LESSOR ID:  
                  LESSEE   :    TOTAL MINATOME CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-5240708-001    07/15/1992    07/15/1992  1151   746  741711
GROSS ACRES       LESSOR   :    THE ELLEN LUCY MCHUGH TRUST
  20.00000        LESSOR ID:  
                  LESSEE   :    TOTAL MINATOME CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-5240709-001    07/15/1992    07/15/1992  1152   331  741864
GROSS ACRES       LESSOR   :    JANICE DOTY HALL
  80.00000        LESSOR ID:  
                  LESSEE   :    TOTAL MINATOME CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE   CURRENT RECORDING
  PROPERTY NO      LEASE DATE      DATE     BOOK  PAGE  ENTRY
 
01-5240709-002    07/15/1992    07/15/1992  1152   339  741866
GROSS ACRES       LESSOR   :    KARL GEHLMANN
  80.00000        LESSOR ID:  
                  LESSEE   :    TOTAL MINATOME CORPORATION
                  PROSPECT :    LAKE ENFERMER


                                EFFECTIVE  CURRENT RECORDING
 PROPERTY NO       LEASE DATE     DATE     BOOK  PAGE  ENTRY
 
                  01-01/1992
GROSS ACRES       LESSOR   :    LAFOURCHE REALTY COMPANY INC
                  LESSOR ID:  
                  LESSEE   :    TOTAL MINATOME CORPORATION
                  PROSPECT :    LAKE ENFERMER


LAFOURCHE REALTY COMPANY, INC. LANDS SITUATED IN LAFOURCHE PARISH, LOUISIANA AND
DESCRIBED AS FOLLOWS TO-WIT:

12.157 acres, more or less, situated in Sections 7 and 18 of Township 20 South,
Range 23 East and being more particularly described by metes and bounds as
follows:
<PAGE>
 
                                   EXHIBIT A                       Page 42 of 64

Beginning at a point along the intersection of the T-1 RA SUA and the R RA SUA
having Lambert coordinates as
x = 2,372,047.33
y = 251,372.76
thence northwest along the T-1 RA SUA N86d 11'9"W  107.58'
thence S85d36'05"W  286.84'
thence S64d55'57"W  136.89'
thence S26d12'00"W  210.64'
thence S15d03'42"W  311.71'
thence S10d21'12"W  422.88'
thence S06d27'01"W  632.00'
thence S01d55'54"W  682.39'
thence S00d46'13"E       595.05'
thence S05d49'02"E       508.85'
to a point along the intersection of the T-1 RA SUA
and the R RA SUA
x = 2,371,245.57
y = 247,982.76
thence northwest along the R RA SUA N11d31'18"W    208.05'
thence N09d59'24"W  553.39'
thence N05d07'31"W  526.10'
thence N02d08'24"E       562.39'
thence N06d11'51"E       842.93'
thence N02d19'04"E       420.34'
thence N09d46'57"E       147 14'
thence N14d37'15"E       118 85'
thence N32d16'32"E       112 36'
thence N52d35'41"E       107 00'
thence N66d48'05"E       114 23'
thence N80d54'35"E       126 59'
thence S76d30'15"E       128.55'
thence S65d51'16"E       158 90'
thence S59d14'45"E       182 87'
to the Point of Beginning

THE NOMENCLATURE FOR THE UNITS MENTIONED IN THE ABOVE METES AND BOUNDS ARE MORE
PARTICULARLY DESCRIBED AS FOLLOWS:

R RA SUA ESTABLISHED BY LOUISIANA OFFICE OF CONSERVATION ORDER NO. 340-P-3,
DATED OCTOBER 18, 1983, EFFECTIVE AUGUST 30, 1983, RECORDED COB 840, FOLIO - ,
ENTRY NO. 593064.

T-1 RA SUA ESTABLISHED BY  LOUISIANA OFFICE OF CONSERVATION ORDER NO. 340-Q-2,
DATED OCTOBER 18, 1983, EFFECTIVE AUGUST 30, 1983, RECORDED COB 840, FOLIO - ,
ENTRY NO. 593062.

                             EFFECTIVE  CURRENT RECORDING
 PROPERTY NO    LEASE DATE     DATE     BOOK  PAGE  ENTRY
 
               01/01/1992
GROSS ACRES    LESSOR   :    LAFOURCHE REALTY COMPANY INC
               LESSOR ID:  
               LESSEE   :    TOTAL MINATOME CORPORATION
               PROSPECT :    LAKE ENFERMER
<PAGE>
 
                                   EXHIBIT A                       Page 43 of 64


LAFOURCHE REALTY COMPANY, INC. LANDS SITUATED IN LAFOURCHE PARISH, LOUISIANA AND
DESCRIBED AS FOLLOWS TO-WIT:

TRACT 1:  2.122 acres, more or less, situated in Section 19, Township 20 South,
          Range 23 East, and being more particularly described by metes and
          bounds as follows:

 
Beginning at a point along the Intersection of V-3 RD SU A and
V 2 RD SU A having Lambert coordinates
x = 2,378,150.00
y = 243,410.00
thence Southwest along the V-2 RD SU A S13d23'33"E    215.87
thence S09d05'25"E                                    253.18
thence S03d10'47"E                                    180.28
thence S07d07'30"W                                    241.87" to a point along 
the intersection of the V-2 RD SU A and the V-3 RD SU A having Lambert 
coordinates
x = 2,378,220.00
y = 242,530.00
thence Northeast along the V-3 RD SU A N00d00'02"E      270.00'
thence N06d32'47"W  614.00' to the point of beginning.

TRACT 2:  .459 acres, more or less, situated in Section 20, Township 20 South,
          Range 23 East, and being more particularly described by metes and
          bounds as follows:

Beginning at a point along the Intersection of the V-3 RD SU A and
the V-2 RD SU A having Lambert coordinates
x = 2,374,776.92
y = 240,647.10
thence Southwest along the V-3 RD SU A S01d19'34"W      565.03' to the
Intersection of the V-2 RD SU A and the V-3 RD SU A having Lambert coordinates
x = 2,374,763.85
y = 240,082.22
thence Northwestward along the V-2 RD SU A N83d59'28"W 328.35'
to a point having Lambert coordinates
x = 2,374,437.31
y = 240,118.59
thence Northeast N32d37'35"W  029 91' to the point of beginning

     THE NOMENCLATURE FOR THE UNITS MENTIONED IN THE ABOVE METES AND BOUNDS
     DESCRIPTION ARE MORE PARTICULARLY DESCRIBED AS FOLLOWS:

     V-2 RD SUA ESTABLISHED BY LOUISIANA OFFICE OF CONSERVATION ORDER NO. 340-T-
     4, DATED JULY 1, 1985, EFFECTIVE MAY 7, 1985, RECORDED COB 918, FOLIO 756,
     ENTRY NO. 631920, RECORDS OF LAFOURCHE PARISH, LOUISIANA.

     V-2 RD SUA ESTABLISHED BY LOUISIANA OFFICE OF CONSERVATION ORDER NO. 340-S-
     4, DATED JULY 1, 1985, EFFECTIVE MAY 7, 1985, RECORDED COB 918, FOLIO 760,
     ENTRY NO. 631921, RECORDS OF LAFOURCHE PARISH, LOUISIANA.
<PAGE>
 
                                   EXHIBIT A                       Page 44 of 64

Contract No. 136

     Farmout Agreement dated April 10, 1973, between Lynal Exploration Company,
     Samedan Oil Corporation, Tesoro Petroleum Corporation and Oppenheimer Oil
     and Gas, Inc., as Farmors, and Texas Gas Exploration Corporation, as
     Farmee, covering certain lands and leases in Lafourche Parish, Louisiana.

Contract No.137

     Joint Operating Agreement dated December 14, 1973, between Texas Gas
     Exploration Corporation, as Operator, and Lynal Exploration Company, Tesoro
     Petroleum Corporation, Samedan Oil Corporation and Oppenheimer Oil & Gas,
     Inc. as Non-Operators; a declaration and notice of same having been
     recorded in the Conveyance Records of Lafourche Parish, Louisiana on
     November 15, 1976, in Book 579, at Folio 138, under Entry No. 435086.

Contract No.138

     Unit Operating Agreement dated May 9, 1974, between Texas Gas Exploration
     Corporation, as Operator, and Lynal Exploration Company, Tesoro Petroleum
     Corporation, Samedan Oil Corporation, Oppenheimer Oil & Gas, Inc., and
     Petro-Lewis Corporation,  as Non-Operators, covering the operation of the
     "I" RA SU A, established by Louisiana Department of Conservation Order No.
     340-B, effective May 9, 1974; a declaration and notice of said Agreement
     having been recorded in the Conveyance Records of Lafourche Parish,
     Louisiana on November 15, 1976, in Book 579, at Folio 144, under Entry No.
     435087.

Contract No.139

     Unit Operating Agreement dated August 14, 1974, between Texas Gas
     Exploration Corporation, as Operator, and Lynal Exploration Company, Tesoro
     Petroleum Corporation, Samedan Oil Corporation, Oppenheimer Oil & Gas,
     Inc., and Petro-Lewis Corporation,  as Non-Operators, covering the
     operation of the "H" RB SU A, established by Louisiana Department of
     Conservation Order No. 340-A-1, effective August 14, 1974; a declaration
     and notice of said Agreement having been recorded in the Conveyance Records
     of Lafourche Parish, Louisiana on November 15, 1976, in Book 579, at Folio
     146, under Entry No.  435088.

Contract No.140

     Unit Operating Agreement dated June 17, 1975 between Texas Gas Exploration
     Corporation, as Operator, and Lynal Exploration Company, Tesoro Petroleum
     Corporation, Samedan Oil Corporation, Oppenheimer Oil & Gas, Inc., and
     Petro-Lewis Corporation,  as Non-Operators, covering the operation of the
     "J" RA SU A, established by Louisiana Department of Conservation Order No.
     340-H, effective June 17, 1975; a declaration and notice of said Agreement
     having been recorded in the Conveyance Records of Lafourche Parish,
     Louisiana on April 4, 1977, in Book 591, at Folio 393 under Entry No.
     443618.

Contract No. 141

     Farmout Agreement dated February 13, 1976, as amended, between McMoRan
     Exploration Company and Texas Gas Exploration Corporation, covering certain
     lands and leases in Lafourche Parish, Louisiana.
<PAGE>
 
                                   EXHIBIT A                       Page 45 of 64

Contract No.142

     Joint Operating Agreement dated effective December 1, 1976, between Texas
     Gas Exploration Corporation, as Operator, and Inc., Tesoro Petroleum
     Corporation, Samedan Oil Corporation, OPCO Production Company, McMoRan Oil
     & Gas Company and Natomas North America, Inc., as Non-Operators, a
     declaration and notice of same having been recorded in the Conveyance
     Records of Lafourche Parish, Louisiana on August 11, 1980 in Book 708, at
     Folio 777 under Entry No. 525436.

Contract No.143

     Unit Operating Agreement dated June 28, 1977 between Texas Gas Exploration
     Corporation, as Operator, and Douglas D. Lynn, Alton Coats Estate, Tesoro
     Petroleum Corporation, Samedan Oil Corporation, OPCO Production Company,
     McMoRan Oil & Gas Company, and Natomas North America, Inc., as Non-
     Operator, covering operations of the "R" RA SU A, established by Louisiana
     Department of Conservation Order No. 340-P-1, effective June 28, 1977 as
     amended by Orders 340-P-2 and 340-P-3; a declaration and notice of said
     Agreement being recorded in the Conveyance Records of Lafourche Parish,
     Louisiana on January 15, 1985 in Book 898, at Folio 456 under Entry No.
     621391.

Contract No.144

     Operating Agreement Providing A Carried Interest to State effective January
     11, 1978 between the State Mineral Board, for and on behalf of the State of
     Louisiana, and Texas Gas Exploration Corporation, Lynal Exploration
     Company, Tesoro Petroleum Corporation, Samedan Oil Corporation, Oppenheimer
     Oil & Gas, Inc., McMoRan Exploration Co. and Natomas Exploration, Inc.
     referred to collectively as Operator, recorded in the Conveyance Records of
     Lafourche Parish, Louisiana on January 19, 1978, in Book 616 under Entry
     Nos. 463367, 463368, 463369, 463370, 463371, 463372, and 463373.

Contract No.145

     Unit Operating Agreement dated March 15, 1978 between Texas Gas Exploration
     Corporation, as Operator, and Douglas D. Lynn, Alton Coats Estate, Tesoro
     Petroleum Corporation, Samedan Oil Corporation, OPCO Production Company,
     McMoRan Oil & Gas Company, and Natomas North America, Inc., as Non-
     Operator, covering operators of the "V-3" RA SU A, established by Louisiana
     Department of Conservation Order No. 340-S, effective March 15, 1978, as
     amended by Order 340-S-1; a declaration and notice of said Agreement being
     recorded in the Conveyance Records of Lafourche Parish, Louisiana on
     January 15, 1985 in Book 898, at Folio 454 under Entry No.  621390.

Contract No.146

     Joint Operating Agreement dated effective March 15, 1978 between Texas Gas
     Exploration Corporation, as Operator, and Lynal Exploration Company, Tesoro
     Petroleum Corporation, Samedan Oil Corporation, OPCO Production Company,
     McMoRan Oil & Gas Company and Natomas North America, Inc., as Non-
     Operators, a declaration and notice of same having been recorded in the
     Conveyance Records of Lafourche Parish, Louisiana on August 11, 1980, in
     Book 708, at Folio 773, under Entry No.525435, as amended 11-20-80.
<PAGE>
 
                                   EXHIBIT A                       Page 46 of 64


Contract No. 148

     Farmout Agreement dated September 14, 1984, between Samedan Oil
     Corporation, Yankee Exploration, Inc., Damson Oil Corporation, Lynal, Inc.,
     as Farmors, and Texas Gas Exploration Corporation,  as Farmee, covering
     certain lands and leases in Lafourche Parish, Louisiana.

Contract No. 235

     Unit Operating Agreement dated June 28, 1977 between Texas Gas Exploration
     Corporation, as Operator, and Douglas D. Lynn, Alton Coats Estate, Tesoro
     Petroleum Corporation, Samedan Oil Corporation, OPCO Production Company,
     McMoRan Oil & Gas Company and Natomas North America, Inc., as Non-
     Operators, covering the operations of the "T-1" RA SU A, established by
     Louisiana Department of Conservation Order No. 340-Q, effective June 28,
     1977 as amended by Orders 340-Q-1 and 340-Q-2; a declaration and notice of
     said Agreement being recorded in the Conveyance Records of Lafourche
     Parish, Louisiana on January 15, 1985 in Book 898, at Folio 452 under Entry
     No. 621389.

Contract No. 209:

     AMI Termination Agreement between TGEC and MCMORAN, et al dated 8/22/1979.
     Lake Enfermer Prospect, Lafourche Parish, Louisiana.

Contract No. 147:

     Farmout Agreement between MCMORAN Production Co-Opr, and TGEC-Non-Opr dated
     10/11/1983.  Lake Enfermer Prospect, Lafourche Parish, Louisiana, as
     amended 4/25/84; 6/25/84.

Contract No. 1051:

     Farmout Agreement dated 8/30/84, amended 9/14/84, between Samedan, et al
     and TGEC.  Lake Enfermer Prospect, Lafourche Parish, Louisiana.

Contract No. 1052:

     Farmout Agreement dated 8/7/1984 between Damson and TGEC.  Lake Enfermer
     Prospect, Lafourche Parish, Louisiana.

     Transportation Agreement between Louisiana Intrastate Gas Corporation (LIG)
     and TOTAL MINATOME CORPORATION dated March 1, 1992.

     Gas Agreement dated 4/10/75 between TGEC and Mr. Richard St. Pierre, Sr.

     Graham Agency Agreement dated March 14, 1988.

     Voluntary Unit with the State Mineral Board of the State of Louisiana
     covering State Lease Numbers 8403 and 6024, being a pooled unit bounded by
     V-3 RB SUA, V-4 RA SUA, V-2 RB SUA and T-7 RC SUA, recorded in Book 891,
     Page 490, Entry No. 618326, Lafourche Parish, Louisiana.  Contract No. 695.
<PAGE>
 
                                   EXHIBIT A                       Page 47 of 64


                              LAKE ENFERMER FIELD
                              -------------------

1.   Oil, Gas and Mineral Lease, dated October 1, 1993, between Lafourche Realty
     Company, as Lessor, and Forman Petroleum Corporation, as Lessee, recorded
     in Conveyance Book 118___, Folio 348, Entry No. 757789 of the records of
     Lafourche Parish, Louisiana.

2.   Oil, Gas and Mineral Lease, dated January 1, 1993, between Lafourche Realty
     Company, as Lessor, and Forman Petroleum Corporation, as Lessee, recorded
     in Conveyance Book 1201, Folio 149, Entry No. 763180 of the records of
     Lafourche Parish, Louisiana.

3.   Oil, Gas and Mineral Lease, dated March 1, 1993, between The Allan Company,
     as Lessor, and Forman Petroleum Corporation, as Lessee, recorded in
     Conveyance Book 1171, Entry No. 750581 of the records of Lafourche Parish,
     Louisiana.

4.   Oil, Gas and Mineral Lease, dated October 21, 1993, between William H.
     Harrison, Jr., Administrator of the Succession of Patrick John Harrison, as
     Lessor, and Forman Petroleum Corporation, as Lessee, recorded in Conveyance
     Book 1194, Folio 650, Entry No. 759920 of the records of Lafourche Parish,
     Louisiana.

5.   Oil, Gas and Mineral Lease, dated October 21, 1993, between William H.
     Harrison, Jr., et al, as Lessors, and Forman Petroleum Corporation, as
     Lessee, recorded in Conveyance Book 1192, Entry No. 758828 of the records
     of Lafourche Parish, Louisiana.

6.   Oil, Gas and Mineral Lease, dated October 21, 1993, between Gloria Knight
     Ferrera, et al, as Lessors, and Forman Petroleum Corporation, as Lessee,
     recorded in Conveyance Book 1192, Entry No. 758827 of the records of
     Lafourche Parish, Louisiana.

7.   Oil, Gas and Mineral Lease, dated October 21, 1993, between Shirley
     Harrison Hyde, et al, as Lessors, and Forman Petroleum Corporation, as
     Lessee, recorded in Conveyance Book 1192, Entry No. 758829 of the records
     of Lafourche Parish, Louisiana.

8.   Oil, Gas and Mineral Lease, dated June 30, 1994, between Philip A. Grove,
     et al, as Lessor and Forman Petroleum Corporation, as Lessee, recorded in
     Conveyance Book 1215, Folio 597, Entry No. 770121 of the records of
     Lafourche Parish, Louisiana.

9.   Oil, Gas and Mineral Lease, dated July 25, 1994, between The Allan Company,
     as Lessor, and Forman Petroleum Corporation, as Lessee, recorded in
     Conveyance Book 1214, Folio 521, Entry No. 769655 of the records of
     Lafourche Parish, Louisiana.

10.  Oil, Gas and Mineral Lease, dated May 16, 1994, between the State Mineral
     Board of the State of Louisiana, acting for and in behalf of the Lafourche
     Parish School Board, as Lessor, and Forman Petroleum Corporation, as
     Lessee, recorded in Conveyance Book 1208, Folio 818, Entry No. 767117 of
     the records of Lafourche Parish, Louisiana.
<PAGE>
 
                                   EXHIBIT A                       Page 48 of 64

                              LAKE ENFERMER FIELD
                          LAFOURCHE PARISH, LOUISIANA

1.   Oil, Gas and Mineral Lease, dated November 1, 1993, between The William H.
Harrison, Jr. Family Project, as Lessor, and Forman Petroleum Corporation, as
Lessee, recorded in COB 1252, Folio 62, Entry No.786316, records of Lafourche
Parish, Louisiana. (Lease No. 9203-0008-04)

2.   Oil, Gas and Mineral Lease, dated October 21,1993, between The William H.
Harrison, Jr. - Family Project, as Lessor, and Forman Petroleum Corporation, as
Lessee, recorded in COB 1240, Folio 223, Entry No. 780620, records of Lafourche
Parish, Louisiana. (Lease No. 9203-0008-07)

3.   Oil, Gas and Mineral Lease, dated January 18, 1996, between The Ellen Lucy
McHugh Trust, as Lessor, and Forman Petroleum Corporation, as Lessee, recorded
in COB 1264, Entry No.792430, records of LaFourche Parish, Louisiana. (Lease No.
9203-0016-02)

4.   Oil, Gas and Mineral Lease, dated January 18, 1996, between The Clint Colby
Revocable Trust, et al, as Lessor, and Forman Petroleum Corporation, as Lessee,
recorded in COB 1264, Entry No. 792429, records of LaFourche Parish, Louisiana.
(Lease No. 9203-0016-01)

5.   Oil, Gas and Mineral Lease, dated January 18, 1996, between The Adrienne F.
Faber Testamentary Trust, el al, as Lessor, and Forman Petroleum Corporation, as
Lessee, recorded in COB 1264, Entry No.792425 records of Lafourche Parish,
Louisiana. (Lease No. 9203-0017-01)

6.   Oil, Gas and Mineral Lease, dated January 18,1996, between Thomas L.
Fassett, as Lessor, and Forman Petroleum Corporation, as Lessee, recorded in COB
1264, Entry No. 792427, records of Lafourche Parish, Louisiana. (Lease No.9203-
0017-04)

7.   Oil, Gas and Mineral Lease, dated January 18,1996, between Willard Fassett,
as Lessor, and Forman Petroleum Corporation, as Lessee, recorded in COB 1264,
Entry No. 792428, records of Lafourche Parish, Louisiana. (Lease No. 9203-0017-
05)

8.   Oil, Gas and Mineral Lease, dated January 18,1996, between Richard Fassett,
as Lessor, and Forman Petroleum Corporation, as Lessee, recorded in COB 1264,
Entry No. 792426, records of Lafourche Parish, Louisiana. (Lease No. 9203-0017-
06)

9.   Oil, Gas and Mineral Lease, dated September 26,1994, between Gloria Knight
Ferrera, et al as Lessor, and Forman Petroleum Corporation, as Lessee, recorded
in COB 1239, Folio 774, Entry No. 780495, records of Lafourche Parish,
Louisiana. (Lease No. 9203-0040-01)

10.  Oil, Gas and Mineral Lease, dated September 26,1994, between Shirley
Harrison Hyde, et al, as Lessor, and Forman Petroleum Corporation, as Lessee,
recorded in COB 1239, Folio 782, Entry No.780496, records of Lafourche Parish,
Louisiana. (Lease No.9203-0040-02)

11.  Oil, Gas and Mineral Lease, dated September 26,1994, between The William H.
Harrison, Jr. - Family Project, as Lessor, and Forman Petroleum Corporation, as
Lessee, recorded in COB 1239, Folio 790, Entry No.780497, records of Lafourche
Parish, Louisiana. (Lease No. 9203-0040-03)
<PAGE>
 
                                   EXHIBIT A                       Page 49 of 64

                          FORMAN PETROLEUM CORPORATION
                             MANILLA VILLAGE FIELD
                          JEFFERSON PARISH, LOUISIANA

                                       I.

                           OIL GAS AND MINERAL LEASES

1.   940001. That certain Oil, Gas and Mineral Lease dated October 9, 1963,
between Alma Franz Deichmann, et al, as Lessors and Whitestone Petroleum
Corporation, as Lessee, which lease is recorded in COB 23, Folio 919 as Entry
No. 273368 of the Conveyance Records of Jefferson Parish, Louisiana.

                                          Before Payout   After Payout
                                          -------------   ------------

     Operating Interest                  0.08166667        0.07145833
     Net Revenue Interest                0.05843367        0.05112946

     Payout is determined pursuant to the terms of that certain Assignment and
Conveyance from C. T. Carden, et al to Forman Petroleum Corporation, recorded in
the records of Jefferson Parish, Louisiana, covering the above-described Oil,
Gas and Mineral Lease.

2.   940002. That certain Oil, Gas and Mineral Lease dated October 16, 1963,
between Herbert J. Harvey, as Lessor and Whitestone Petroleum Corporation, as
Lessee, which lease is recorded in Mineral Lease Book 24, Folio 47, as Entry No.
275432 of the Mineral Lease Records of Jefferson Parish, Louisiana.

                                          Before Payout  After Payout
                                          -------------  ------------

     Operating Interest                  0.01333333        0.01166667
     Net Revenue Interest                0.00854019        0.00747266

     Payout is determined pursuant to the terms of that certain Assignment and
Conveyance from C. T. Carden, et al to Forman Petroleum Corporation, recorded in
the records of Jefferson Parish, Louisiana, covering the above-described Oil,
Gas and Mineral Lease.

3.   940003. That certain Oil, Gas and Mineral Lease dated October 9, 1963,
between Lillian Richards, et al, as Lessors and Whitestone Petroleum
Corporation, as Lessee, which lease is recorded in Mineral Lease Book 23, Folio
915, as Entry No. 273367, of the Mineral Lease Records of Jefferson Parish,
Louisiana.

                                          Before Payout  After Payout
                                          -------------  ------------

     Operating Interest                  0.18400000        0.16100000
     Net Revenue Interest                0.13165464        0.11519779

     Payout is determined pursuant to the terms of that certain Assignment and
Conveyance from C. T. Carden, et al to Forman Petroleum Corporation, recorded in
the records of Jefferson Parish, Louisiana, covering the above-described Oil,
Gas and Mineral Lease.

4.   940004. That certain Oil, Gas and Mineral Lease dated October 9, 1963,
between George Deichmann, et al, as Lessors and Whitestone Petroleum
Corporation, as Lessee, which lease is recorded in Mineral Lease Book 23, Folio
911, as Entry No. 273366, of the Mineral Lease Records of Jefferson Parish,
Louisiana.
<PAGE>
 
                                   EXHIBIT A                       Page 50 of 64


                                          Before Payout         After Payout
                                          -------------         ------------

     Operating Interest                   0.42100000            0.36837500
     Net Revenue Interest                 0.30123150            0.26357758

     Payout is determined pursuant to the terms of that certain Assignment and
Conveyance from C. T. Carden, et al to Forman Petroleum Corporation, recorded in
the records of Jefferson Parish, Louisiana, covering the above-described Oil,
Gas and Mineral Lease.

5.   940500. That certain Oil, Gas and Mineral Lease dated September 23, 1963,
between The State of Louisiana, as Lessor and Whitestone Petroleum Corporation,
as Lessee, which lease is recorded in Mineral Lease Book 23, Folio 903, Entry
No. 272461 of the Mineral Lease Records of Jefferson Parish, Louisiana, and
further designated as State Lease No. 4192,

     INSOFAR AND ONLY INSOFAR AS THE TRACTS OR PARCELS OF LAND COVERED BY SAID
     OIL, GAS AND MINERAL LEASE ARE LOCATED WITHIN THE PERIMETERS OF THE
     FOLLOWING DESCRIBED LANDS, TO-WIT:

     Beginning at U.S.C. & G.S. Station "Mud-1934", said point having Lambert
     Plane Coordinates of x = 2,416,499.62 and Y = 295,408.07, go West 1,550
     feet to a point, thence North 4,900 feet to a point on the West line of
     State Lease 4192, being the Southwest corner of the 14,700 feet Sand Unit
     B, and described herein as "Point of Beginning"; thence North along the
     West line of State Lease 4192 a distance of 3,200 feet to the Northwest
     Corner of said lease; thence East along the North line of said lease a
     distance of 7,250 feet to the Northeast Corner of said lease; thence
     Southerly a distance of 2,350 feet to a point on the East line of State
     Lease 4192; thence Westerly at right angles, a distance of 3,610 feet to a
     point; thence Southerly at right angles a distance of 250 feet to a point;
     thence Westerly at right angles a distance of 1,000 feet to a point on the
     East line of 14,700 feet Sand Unit "B"; thence Southerly a distance of 600
     feet to the Southeast Corner of 14,700 feet Sand Unit B; thence West a
     distance of 2,640 feet along the South boundary of said unit to the Point
     of Beginning.

                                          Before  Payout         After Payout
                                          --------------         ------------

     Operating Interest                   0.70000000             0.61250000
     Net Revenue Interest                 0.46320754             0.40530660

     Payout is determined pursuant to the terms of that certain Assignment and
Conveyance from C. T. Carden, et al to Forman Petroleum Corporation, recorded in
the records of Jefferson Parish, Louisiana, covering the above-described Oil,
Gas and Mineral Lease.

6.   941001 and 941002. That certain Oil, Gas and Mineral Lease dated January
21, 1967, between Emile A. Maier, et al, as Lessors and Whitestone Petroleum
Corporation, as Lessee, which lease was signed in counterparts that are recorded
in Mineral Lease Book 26, Folio 684, Entry No. 384949 of the Mineral Lease
Records of Jefferson Parish, Louisiana, and in Mineral Lease Book 26, Folio 690,
Entry No. 384950 of the Mineral Lease Records of Jefferson Parish, Louisiana,

     LESS AND EXCEPT THEREFROM THOSE PORTIONS OF THE TRACTS OR PARCELS OF LANDS
     COVERED BY THE ABOVE DESCRIBED OIL, GAS AND MINERAL LEASE LYING OUTSIDE OF
     THE FOLLOWING DESCRIBED UNITS, TO WIT:
<PAGE>
 
                                   EXHIBIT A                       Page 51 of 64


          1.  MV Bigenerina Q Sand Unit established by Louisiana Department of
     Conservation Order No. 582-C-1 dated October 19, 1970, effective October 1,
     1970.

          2.  MV Bigenerina O Sand Unit established by Louisiana Department of
     Conservation Order No. 582-D-1 dated October 16, 1970, effective October 1,
     1970.

          3.  MV Bigenerina E Sand Unit established by Louisiana Department of
     Conservation Order No. 582-E-l dated October 16, 1970, effective October 1,
     1970.

          4.  MV Bigenerina K Sand Unit established by Louisiana Department of
     Conservation Order No. 582-F-1 dated October 16, 1970, effective October 1,
     1970.

          5.  MV 9900' Sand Unit established by Louisiana Department of
     Conservation Order No. 582-J dated October 16, 1970, effective October 1,
     1970.

          6.  MV Bigenerina Q-1 Sand Unit established by Louisiana Department of
     Conservation Order No. 582-K dated October 19, 1970, effective October 1,
     1970.

          7.  Bigenerina M Sand Unit established by Louisiana Department of
     Conservation Order No. 582-G dated February 10, 1969, effective February 1,
     1969.

          8.  Bigenerina "R" Sand Unit established by Louisiana Department of
     Conservation Order No. 582-A-2 dated February 21, 1968, effective February
     9, 1968.

                                          Before Payout  After Payout
                                          -------------  ------------

     Operating interest                    0.70000000     0.61250000
     Net Revenue Interest                  0.50085000     0.43824375

     Payout is determined pursuant to the terms of that certain Assignment and
Conveyance from C. T. Carden, et al to Forman Petroleum Corporation, recorded in
the records of Jefferson Parish, Louisiana, covering the above-described Oil,
Gas and Mineral Lease.

7.   941500. That certain Oil, Gas and Mineral Lease dated effective August 14,
1967, between The State of Louisiana, as Lessor and Whitestone Petroleum
Corporation, as Lessee, which lease is recorded in Mineral Lease Book 26, Folio
985, Entry No. 403622 of the Mineral Lease Records of Jefferson Parish,
Louisiana, and further designated as State Lease No. 4972.

                                          Before Payout  After Payout
                                          -------------  ------------

     Operating Interest                   0.70000000      0.61250000
     Net Revenue Interest                 0.44887500      0.39276563

     Payout is determined pursuant to the terms of that certain Assignment and
Conveyance from C. T. Carden, et al to Forman Petroleum Corporation, recorded in
the records of Jefferson Parish, Louisiana, covering the above-described Oil,
Gas and Mineral Lease.
<PAGE>
 
                                   EXHIBIT A                       Page 52 of 64

8.   942001 and 942001. That certain Oil, Gas and Mineral Lease dated September
12, 1967, between Emile A. Maier, et al, as Lessors and Whitestone Petroleum
Corporation, as Lessee, which lease is recorded in Mineral Lease Book 27, Folio
64, Entry No. 405869 of the Mineral Lease Records of Jefferson Parish,
Louisiana, and in Mineral Lease Book 27, Folio 121, Entry No. 408393 of the
Mineral Lease Records of Jefferson Parish, Louisiana,

     INSOFAR AND ONLY INSOFAR AS THE LANDS DESCRIBED IN SAID OIL, GAS AND
     MINERAL LEASE ARE INCLUDED IN AND LIMITED TO THE MINERAL RIGHTS UNITIZED AS
     TO:

          a.  The MV Bigenerina "0" RA Sand Unit established by Louisiana
     Department of Conservation Order No. 582-D-l dated October 16, 1970,
     effective October 1, 1970.

          b.  The MV 9900' Sand Unit established by Louisiana Department of
     Conservation Order No. 582-J dated October 16, 1970, effective October 1,
     1970.

          c.  The MV Bigenerina "R" RA SU A Sand Unit established by Louisiana
     Department of Conservation Order No. 582-A-2 dated February 21, 1968,
     effective February 9, 1968.

                                          Before Payout         After Payout
                                          -------------         ------------

     Operating Interest                   0.70000000             0.61250000
     Net Revenue Interest                 0.50085000             0.43824375

     Payout is determined pursuant to the terms of that certain Assignment and
Conveyance from C. T. Carden, et al to Forman Petroleum Corporation, recorded in
the records of Jefferson Parish, Louisiana, covering the above-described Oil,
Gas and Mineral Lease.

9.   943000. That certain Oil, Gas and Mineral Lease dated September 23, 1963,
between The State of Louisiana, as Lessor and Pel Tex Petroleum Company, as
Lessee, which lease is recorded in Mineral Lease Book 23, Folio 893, Entry No.
272125 of the Mineral Lease Records of Jefferson Parish, Louisiana, further
identified as State Lease 4190,

     INSOFAR AND ONLY INSOFAR AS THE LANDS DESCRIBED IN SAID OIL, GAS AND
     MINERAL LEASE ARE INCLUDED IN AND LIMITED TO THE MINERAL RIGHTS UNITIZED AS
     TO:

          a.  The MV Bigenerina "O" RA Sand Unit created by La. Office of
     Conservation Order No. 582-D-l dated effective October 1, 1970.

          b.  The MV Bigenerina "Q" RA Sand Unit created by La. Office of
     Conservation Order No. 582-C-1 dated effective October 1, 1970.

          c.  The MV Bigenerina "R" RA SU A created by La. Office of
     Conservation Order No. 582-A-2 dated effective February 9, 1968.

                                          Before Payout        After Payout
                                          -------------        ------------

     Operating Interest                   0.70000000             0.61250000
     Net Revenue Interest                 0.49560021             0.43365183

10.  943500. That certain Oil, Gas and Mineral Lease dated August 21, 1963,
between Ada Jamison Watt, et al, as Lessors and Robert L. Wolfe as Lessee, which
lease is recorded in Mineral 
<PAGE>
 
                                   EXHIBIT A                       Page 53 of 64


Lease Book 23, Folio 993, Entry No. 274377 of the Mineral Lease Records of
Jefferson Parish, Louisiana.

11.  That certain Oil, Gas and Mineral Lease dated September 12, 1967, between
Emile A. Maier, et al, as Lessors and Whitestone Petroleum Corporation, as
Lessee, which lease is recorded in Mineral Lease Book 27, Folio 64, Entry No.
405869 of the Mineral Lease Records of Jefferson Parish, Louisiana, and in
Mineral Lease Book 27, Folio 121, Entry No. 408393 of the Mineral Lease Records,
of Jefferson Parish, Louisiana, SAVE AND EXCEPT THEREFROM THE FOLLOWING:

          a. All lands and mineral rights unitized as to:

             (i) The MV Bigenerina "0" RA Sand Unit established by Louisiana
             Department of Conservation Order No. 582-D-1 dated October 16,
             1970, effective October 1, 1970;

             (ii) The MV 9900' Sand Unit established by Louisiana Department of
             Conservation Order No. 582-J dated October 16, 1970, effective
             October 1, 1970; and

             (iii) The MV Bigenerina "R" RA SU A Sand Unit established by
             Louisiana Department of Conservation Order No. 582-A-2 dated
             February 21, 1968, effective February 9, 1968; and

          b. All lands released by that certain instrument dated October 8, 1971
             executed by Patrick Petroleum Company, et al, recorded in Mineral
             Lease Book 29, Folio 889, Entry No. 538451.

                                          Before Payout         After Payout
                                          -------------         ------------

     Operating Interest                     0.70000000           0.61250000
     Net Revenue Interest                   0.50085000           0.43824375

     Payout is determined pursuant to the terms of that certain Assignment and
Conveyance from C. T. Carden, et al to Forman Petroleum Corporation, recorded in
the records of Jefferson Parish, Louisiana, covering the above-described Oil,
Gas and Mineral Lease.

     INSOFAR AND ONLY INSOFAR AS THE LANDS DESCRIBED IN SAID OIL, GAS AND
     MINERAL LEASE ARE INCLUDED IN AND LIMITED TO THE MINERAL RIGHTS UNITIZED AS
     TO:

          a.  The MV Bigenerina "0" RA Sand Unit created by La. Office of
     Conservation Order No. 582-D-1 dated effective October 1, 1970.

          b.  The MV Bigenerina "Q" RA Sand Unit created by La Office of
     Conservation Order No. 582-C-1 dated effective October 1, 1970.

          c.  The MV Bigenerina "R" RA SU A created by La. Office of
     Conservation Order No. 582-A-2 dated effective February 9, 1968.

                                          Before Payout        After Payout
                                          -------------        ------------

     Operating Interest                     0.70000000           0.61250000
     Net Revenue Interest                   0.49560021           0.43365177
<PAGE>
 
                                   EXHIBIT A                       Page 54 of 64

     Payout is determined pursuant to the terms of that certain Assignment and
Conveyance from C. T. Carden, et al to Forman Petroleum Corporation, recorded in
the records of Jefferson Parish, Louisiana, covering the above-described Oil,
Gas and Mineral Lease.

                                      II.

                                    FEE LAND

     That certain tract of land comprising 25 acres, more or less, located in
Section 37, Township 18 South, Range 24 East, Jefferson Parish, Louisiana, being
the same tract of land acquired by Tidewater Associated Oil Company from Zodiac
Corporation by deed dated March 30, 1949, and recorded"in Conveyance Book 266,
Folio 685, and acquired by James D. Mullins, et al from Texaco Producing Inc.,
by deed dated May 31, 1985, recorded in COB 1260, Folio 28, Entry No. 85-25399,
in the records of Jefferson Parish, Louisiana, purporting to cover all surface
and mineral rights in and to subject property.

                                        After Payout
                                           #1 and
                         Before Payout    Payout #2
  
     Operating Interest    0.70000000    0.61250000
     Net Revenue Interest  0.61110000    0.43135313

     Payout #1, relating to a certain reversionary interest, and Payout #2,
relating to a certain mineral royalty interest, are determined pursuant to the
terms of that certain Assignment and Conveyance from C. T. Carden, et al to
Forman Petroleum Corporation, recorded in the records of Jefferson Parish,
Louisiana, covering the above-described Oil, Gas and Mineral Lease.

                                      III.

                                 UNIT INTERESTS

1.   M V 9900' RA Sand Unit created by State of Louisiana, Office of
Conservation Order No. 582-J, effective October 1, 1970.

                              Total Unit Interest


                              Before Payout             After Payout
                              -------------             ------------

     Net Revenue Interest     0.44505841                0.38862266

     All payouts are determined pursuant to the terms of that certain Assignment
and Conveyance from C. T. Carden, et al to Forman Petroleum Corporation,
recorded in the records of Jefferson Parish, Louisiana, covering the above-
described Oil, Gas and Mineral Lease.

2.   M V Bigenerina K Sand Unit created by State of Louisiana, Office of
Conservation Order No. 582-F-1, effective October 1, 1970.

                              Total Unit Interest
                              -------------------

                              Before Payout             After Payout
                              -------------             ------------

     Net Revenue Interest     0.47256859                0.39994271
<PAGE>
 
                                   EXHIBIT A                       Page 55 of 64



     All payouts are determined pursuant to the terms of that certain Assignment
and Conveyance from C. T. Carden, et al to Forman Petroleum Corporation,
recorded in the records of Jefferson Parish, Louisiana, covering the above-
described Oil, Gas and Mineral Lease.

3.   M V Bigenerina 0 Sand Unit created by State of Louisiana, Office of
Conservation Order No. 582-D-1, effective October 1, 1970.

                              Total Unit Interest
                              -------------------

                              Before Payout             After Payout
                              -------------             ------------

     Net Revenue Interest     0.42960741                0.37259593

     All payouts are determined pursuant to the terms of that certain Assignment
and Conveyance from C. T. Carden, et al to Forman Petroleum Corporation,
recorded in the records of Jefferson Parish, Louisiana, covering the above-
described Oil, Gas and Mineral Lease.

4.   M V Bigemerina Q Sand Unit created by State of Louisiana, Office of
Conservation Order No. 582-C-l, effective October 1, 1970.

                              Total Unit Interest
                              -------------------

                              Before Payout             After Payout
                              -------------             ------------

     Net Revenue Interest     0.48856586                0.42451424

     All payouts are determined pursuant to the terms of that certain Assignment
and Conveyance from C. T. Carden, et al to Forman Petroleum Corporation,
recorded in the records of Jefferson Parish, Louisiana, covering the above-
described Oil, Gas and Mineral Lease.

5.   M V Bigenerina Q-1 Sand Unit created by State of Louisiana, Department of
Conservation Order No. 582-K, effective October 1, 1970.

                              Total Unit Interest
                              -------------------


                              Before Payout             After Payout
                              -------------             ------------

     Net Revenue Interest     0.48114320                0.41761012

     All payouts are determined pursuant to the terms of that certain Assignment
and Conveyance from C. T. Carden, et al to Forman Petroleum Corporation,
recorded in the records of Jefferson Parish, Louisiana, covering the above-
described Oil, Gas and Mineral Lease.

                                      IV.

                                     WELLS


1.   E. A. Maier "B", Well #1. S/N 124815. Located 3,150' South of North Line &
     3,775' East of West Line of, and in Sec. 27, T18S-R24E, Jefferson Parish,
     Louisiana. Serves as Unit Well for 9900' SU.

2.   Getty Fee,Well #1. S/N 124108. Located 2,334' South of North Line & 2,321'
     East of West Line of Section 27, to location in Sec. 37, T18S-R24E,
     Jefferson Parish, Louisiana, being North, 82(degrees) 40'21" East, 1192.51'
     from USC&GS Station "Saint 66". Serves as Unit Well for MV Big. "K" RA SU.
<PAGE>
 
                                   EXHIBIT A                      Page 56 of 64


3.   Wm. Deichmann et al., Well #1. S/N 119971. Located 2,340' South of North
     Line & 250' West of East Line of, and in Sec. 28, T18S-R24E, Jefferson
     Parish, Louisiana, being North 84(degrees) West, 2,275' from USC&GS Station
     "St. Denis". Serves as Unit Well for MV Big. "Q" RA SU.

4.   Wm. Deichmann et al., Well #2. S/N 121111. Located 2,167' South of North
     Line & 735' East of West line of, and in Sec. 27, T18S-R24E, Jefferson
     Parish, Louisiana. Serves as Unit Well for Big. "S" VU A.

5.   Wm. Deichmann et al, Well #3. S/N 122813. Located 1,350' South of North
     Line & 330' East of West Line of, and in Sec. 27, T18S-R24E, Jefferson
     Parish, Louisiana, being North 36(degrees) 51'50" West of USC&GS Sta "Saint
     66". Serves as Unit Well for MV Big. "O" SU.

6.   Wm. Deichmann et al., Well #4. S/N 124286. Located 1,366' South of North
     Line & 863.36' West of East Line of, and in Sec. 28, T18S-R24E, Jefferson
     Parish, Louisiana, being North 62(degrees) 13'33" West, 2,280.48' from
     USC&GS Sta "Saint 66". Serves as Unit Well for MV Big. "O" RA SU.

7. State Lease 4192, Well #3. S/N 108701. Located South 41(degrees) 34' West,
     3,226.2' from USC&GS Sta "St. Denis" in T18S-R24E, Jefferson Parish,
     Louisiana. Produces as a Lease Well from the 14,400' Sand.

8. State Lease 4192, Well #4. S/N 117135. Located South 65(degrees) 19'27" West,
     1,986.22' from USC&GS Sta "St. Denis" in T18S-R24E, Jefferson Parish,
     Louisiana.

                                       V.

                         MAJOR ITEMS OF OWNED EQUIPMENT

  Quantity
  --------

     1         Concrete Production Barge with cantilevered deck

     2         3,000-Bbl galvanized, bolted stock tanks

     1         1,500-Bbl galvanized, bolted stock tank

     6         4' x 22'6" National 75# WP Heater Treaters

     2         4' x 20' National 50# WP Recirculating Water Treaters

     1         6' x 28' National 50# WP Test Heater Treater

     6         24" x 5' Vertical Oil/Gas Separators, 125# WP

     3         20" x 7'6" BS&B Vert. Oil/Gas Separators, 1440# WP

     1         7' x 15' Vertical Oil/Gas Separator, 125# WP

     1         24" x 10' BS&B Vert. Gas/Water Separator. 480# WP. Scrubber at
               Compressor Inlet.

     1         24" x 18'6" BS&B Vert. Glycol Tower, 1440# WP, c/w IMM BTU Glycol
               Regenerator
<PAGE>
 
                                   EXHIBIT A                       Page 57 of 64

     3         2" x 12' Horiz Meter Runs w/ Daniel Jr Fittings & Barton Bellows-
               type gas meters.

     2         3" x 16' Horiz Meter Runs w/ Daniel Jr Fittings & Barton Bellows-
               type gas meters.

     1         Concrete Salt Water Disposal Deck Barge

     2         1,500-Bbl galvanized, bolted SW settling Tanks

     1         10' x 12' Dog House/Office Building

     1         8' x 9' Tool House w/ aluminum Sides
<PAGE>
 
                                   EXHIBIT A                       Page 58 of 64

                        BY FORMAN PETROLEUM CORPORATION

                                       I.

                          OIL, GAS AND MINERAL LEASES
                                  BOUTTE FIELD
                         ST. CHARLES PARISH, LOUISIANA

1.   That certain Oil, Gas and Mineral Lease dated January 8, 1952, by Lydia B.
     Simoneaux et al, as Lessors, and The Texas Company, as Lessee, which lease
     is recorded in COB YYY, Folio 182, Entry No. 9119 of the Conveyance Records
     of St. Charles Parish, Louisiana, as amended by that certain instrument
     dated December 27, 1952, by Lydia B. Simoneaux et al and The Texas Company,
     of record in COB 4, Folio 342, Entry No. 10536 of the Conveyance Records of
     St. Charles Parish, Louisiana; and less and except the acreage described in
     that certain Compromise Agreement and Partial Release dated effective
     November 8, 1963, by and between Texaco, Inc. et al, of record in COB 39,
     Folio 92, Entry No. 25144 of the Conveyance Records of St. Charles Parish,
     Louisiana.

2.   That certain Oil, Gas and Mineral Lease dated January 8, 1952, between St.
     Charles Land Company, In Liquidation, as Lessor, and The Texas Company, as
     Lessee, of record in COB YYY, Folio 188, Entry No. 9120 of the Conveyance
     Records of St. Charles Parish, Louisiana, as amended by that certain
     instrument dated December 26, 1952, by and between the St. Charles Land
     Company, In Liquidation, and The Texas Company, of record in COB 4, Folio
     345, Entry No. 10537 of the Conveyance Records of St. Charles Parish,
     Louisiana; and less and except the acreage described in that certain
     Compromise Agreement and Partial Release dated effective November 8, 1963,
     by and between Texaco, Inc. et al, of record in COB 39, Folio 92, Entry No.
     25144 of the Conveyance Records of St. Charles Parish, Louisiana.

The Interest of Forman Petroleum Corporation in Oil, Gas and Mineral Leases Nos.
1 and 2 above is owned in Tracts A and B as Follows:

                                    TRACT A

     The South Half of Southeast Quarter (S/2 of SE/4), and the Southwest
     Quarter (SW/4) of Section 17; the Southeast Quarter (SE/4) and the
     Southeast Quarter of Southwest Quarter (SE/4 of SW/4) of Section 18; All of
     Section 19; All of Section 20; the West Half of West Half (W/2 of W/2) and
     the East Half of Northwest Quarter (E/2 of NW/4) of Section 21; the
     Northwest Quarter of Northwest Quarter (NW/4 of NW/4) of Section 28; the
     North Half (N/2) of Section 29; and the North Half (N/2) of Section 30, all
     in Township 14 South, Range 21 East, St. Charles Parish, Louisiana, LESS
     AND EXCEPT the East Half of the Northwest Quarter (E/2 of NW/4) of Section
     21, Township 14 South, Range 21 East, St. Charles Parish, Louisiana (Tract
     B below).

     LEASE OPERATING INTEREST                 .50000000

     LEASE NET REVENUE INTEREST               .42968750


                     The East Half of the Northwest Quarter
                (E/2 of NW/4) of Section 21, Township 14 South,
                  Range 21 East. St. Charles Parish. Louisiana

     OPERATING INTEREST                       .50000000
<PAGE>
 
                                   EXHIBIT A                       Page 59 of 64

     NET REVENUE INTEREST                     .40625000

                                     UNITS

                            Subject to the following
                   drilling and production units, created by
                    Department of Conservation or Office of
                  Conservation Orders and/or Voluntary Units:

1.   By instrument dated January 4, 1960, recorded on April 20, 1960, in
     Conveyance Book 26, Folio 475, Entry No. 20109, executed by and between
     Texaco Inc., Pan American Petroleum Corporation et al a 40 acre production
     unit was created for the Robulus #1 Zone (being that zone encountered
     between the electric log depths of 10262' through 10415' in The Texas
     Company's (now Texaco Inc.) Rathborne #3 Well located in Section 18,
     Township 14 South, Range 21 East, St. Charles Parish, Louisiana, inclusive
     of the mineral leases covering the subject property. (30 acres).

2.   A plat for Texaco Inc.'s Boutte Field, St. Charles Parish, Louisiana, Main
     Pay R 100 SUA, created by Office of Conservation Order No. 605-H, dated
     November 22, 1982, was registered on February 14, 1983, in Conveyance Book
     293, Folio 763, Entry No. 93337 of the records of St. Charles Parish,
     Louisiana.

3.   A plat for Texaco Inc.'s Boutte Field, St. Charles Parish, Louisiana, ROB L
     RA SUA created by Office Of Conservation Order No. 605-L dated August 17,
     1989, was registered on November 2, 1989, in Conveyance Book 417, Folio
     166, Entry No. 147127, of the records of St. Charles Parish, Louisiana.

4.   The Rathborne 2 Sand, Sand Unit A and Sand Unit B, created by Department of
     Conservation Order No. 605-D dated November 22, 1965, effective November 1,
     1965, Boutte Field, St. Charles Parish, Louisiana.

5.   Supplement to Office of Conservation Order No. 605-D, dated May 9, 1979,
     effective May 9, 1979, Boutte Field, St. Charles Parish, Louisiana.

6.   The Rathborne 2 Sand, Reservoir A, Sand Unit C, created by Department of
     Conservation Order No. 605-D-1, dated November 25, 1975, effective November
     1, 1975, Boutte Field, St. Charles Parish, Louisiana.

7.   The Simoneaux 10 Sand, Sand Unit A, Sand Unit B, and Sand Unit C, created
     by Department of Conservation Order No. 605-E, dated November 22, 1965,
     effective November 1, 1965, Boutte Field, St. Charles Parish, Louisiana.

8.   Supplement to Office of Conservation Order No. 605-E, dated June 28, 1979,
     effective June 28, 1979, Boutte Field, St. Charles Parish, Louisiana.

9.   The Simoneaux 10 Sand, Sand Unit D, created by Department of Conservation
     Order No. 605-E-l, dated November 15, 1966, effective December 1, 1966,
     Boutte Field, St. Charles Parish, Louisiana.

10.  Supplement to Department of Conservation Order No. 605-E-l, dated January
     3, 1977, effective January 3, 1977, Boutte Field, St. Charles Parish,
     Louisiana.

11.  The Simoneaux 10 Sand, Reservoir A, Sand Unit A, created by Department of
     Conservation Order No. 605-E-2, dated November 25, 1975, effective November
     1, 1975, Boutte Field, St. Charles Parish, Louisiana. This order also
     dissolved Simoneaux 10 Sand 
<PAGE>
 
                                   EXHIBIT A                       Page 60 of 64


     Unit A and Simoneaux Sand Unit B created by Department of Conservation
     Order No. 605-E.

12.  Supplement to Office of Conservation Order No. 605-E-2, dated July 25,
     1980, effective July 25, 1980, Boutte Field, St. Charles Parish, Louisiana.

13.  The 10000 Foot Sand, Reservoir A, Sand Unit A, created by Department of
     Conservation Order No. 605-F, dated December 28, 1979, effective December
     13, 1979, Boutte Field, St. Charles Parish, Louisiana.

14.  Supplement to Department of Conservation Order No. 605-F, dated March 12,
     1985, effective March 12, 1985, Boutte Field, St. Charles Parish,
     Louisiana.

15.  Supplement to Department of Conservation Order No. 605-F, dated December
     28, 1989, effective December 28, 1989, Boutte Field, St. Charles Parish,
     Louisiana.

16.  The Simoneaux 4 Sand, Reservoir A, Sand Unit A, created by Department of
     Conservation Order No. 605-G, dated February 13, 1981, effective October
     21, 1980, Boutte Field, St. Charles Parish, Louisiana.

     Unit Operating Interest  -     .7622699  - Unit NRI -   .5731162

17.  Supplement to Department of Conservation Order No. 605-G, dated December
     28, 1989, effective December 28, 1989, Boutte Field, St. Charles Parish,
     Louisiana.

18.  The Main Pay Sand Reservoir 100, Sand Unit A, created by Department of
     Conservation Order No. 605-H, dated November 22, 1982, effective September
     29, 1982, Boutte Field, St. Charles Parish, Louisiana.

19.  Supplement to Department of Conservation Order No. 605-H, dated January 6,
     1986, effective January 6, 1986, Boutte Field, St. Charles Parish,
     Louisiana.

20.  Supplement to Department of Conservation Order No. 605-H, dated December
     31, 1984, effective December 31, 1984, Boutte Field, St. Charles Parish,
     Louisiana.

21.  The Simoneaux 2C Sand, Reservoir A, Sand Unit B, created by Department of
     Conservation Order No. 605-J, dated October 30, 1985, effective September
     25, 1985, Boutte Field, St. Charles Parish, Louisiana.

22.  The Simoneaux 2B Sand, Reservoir A, Sand Unit A, created by Department of
     Conservation Order 605-K, dated February 18, 1987, effective February 10,
     1987, Boutte Field, St. Charles Parish, Louisiana.

23.  The ROB-L Sand, Reservoir A, Sand Unit A, created by Department of
     Conservation Order 605-L, dated August 17, 1989, effective August 8, 1989,
     Boutte Field, St. Charles Parish, Louisiana.

                                      II.

                           OIL, GAS AND MINERAL LEASE
                                  BOUTTE FIELD
                         ST. CHARLES PARISH. LOUISIANA

That certain Oil, Gas and Mineral Lease dated March 31, 1952, by Joseph
Rathborne Land and Lumber Company, Inc., as Lessor, and The California Company,
as Lessee, of record in COB 
<PAGE>
 
                                   EXHIBIT A                      Page 61 of 64

ZZZ, Folio 180, Entry No. 9317 of the Conveyance Records of St. Charles Parish,
Louisiana, LESS AND EXCEPT the lands covered by those certain Partial Releases
as follows:

(1)  Dated February 6, 1970, by and between Chevron Oil Company et al and
     Rathborne Land Company, Inc., unrecorded, releasing the following described
     280.33 acres, more or less:

Those portions of Sections 8, 17 and 18, Township 14 South, Range 21 East,
Southeastern Land District West of the Mississippi River, St. Charles Parish,
Louisiana, described as follows:

Beginning at the Southeast corner of the North one-half of Section 18, Township
14 South, Range 21 East; thence South 89 degrees 16 minutes West 660.0 feet;
thence North 330.0 feet; thence East 657.7 feet; thence North 0 degrees 23
minutes West 244.4 feet; thence North 89 degrees 16 minutes East 2,030.0 feet;
thence North 330.0 feet; thence East 610.0 feet; thence North 330.0 feet; thence
East 330.0 feet; thence North 1,270.0 feet; thence East 330.0 feet; thence North
171.4 feet; thence North 89 degrees 16 minutes East 690.0 feet; thence North
160.0 feet; thence East 630.0 feet; thence North 200.0 feet; thence East 330.0
feet; thence North 300.0 feet; thence East 294.7 feet; thence South 0 degrees 23
minutes East 4,620.4 feet; thence South 89 degrees 16 minutes West 2,631.5 feet;
thence North 0 degrees 23 minutes West 1,325.5 feet; thence South 89 degrees 16
minutes West 2,631.5 feet to the place of beginning, containing 280.33 acres
more or less.

(2)  Dated February 13, 1978, effective February 7, 1978, by and between Chevron
     USA, Inc. et al and Rathborne Land Company, Inc., of record in COB 205,
     Folio 564, Entry No. 61635 of the Conveyance Records of St. Charles Parish,
     Louisiana; and

(3)  Dated January 8, 1982, by and between Chevron USA, Inc. et al and Rathborne
     Land Company, Inc., of record in COB 276, Folio 518, Entry No. 86878 of the
     Conveyance Records of St. Charles Parish, Louisiana.

LEASE OPERATING INTEREST             1.00000000

LEASE NET REVENUE INTEREST            .70312500
<PAGE>
 
                                   EXHIBIT A                       Page 62 of 64

                                     UNITS

                            Subject to the following
                   drilling and production units, created by
                    Department of Conservation or Office of
                  Conservation Orders and/or Voluntary Units:

1.   By instrument dated January 4, 1960, recorded on April 20, 1960, in
     Conveyance Book 26, Folio 475, Entry No. 20109, executed by and between
     Texaco, Inc., Pan American Petroleum Corporation et al a 40 acre production
     unit was created for the Robulus #1 Zone (being that zone encountered
     between the electric log depths of 10262' through 10415' in the Texas
     Company's (now Texaco Inc.) Rathborne #3 Well located in Section 18,
     Township 14 South, Range 21 East, St. Charles Parish, Louisiana, inclusive
     of the mineral leases covering the subject property. (10 acres).

2.   A plat for Texaco Inc.'s Boutte Field, St. Charles Parish, Louisiana, Main
     Pay R 100 SUA, created by Office of Conservation Order No. 605-H, dated
     November 22, 1982, was registered on February 14, 1983, in Conveyance Book
     293, Folio 763, Entry No. 93337 of the records of St. Charles Parish,
     Louisiana.

3.   A plat of Texaco Inc.'s Boutte Field, St. Charles Parish, Louisiana, ROB L
     RA SUA, created by Office Of Conservation Order No. 605-L dated August 17,
     1989, was registered on November 2, 1989, in Conveyance Book 417, Folio
     166, Entry No. 147127, of the records of St. Charles Parish, Louisiana.

4.   The Rathborne 2 Sand, Sand Unit A and Sand Unit B, created by Department of
     Conservation Order No. 605-D dated November 22, 1965, effective November 1,
     1965, Boutte Field, St. Charles Parish, Louisiana.

5.   Supplemental to Office of Conservation Order No. 605-D, dated May 9, 1979,
     effective May 9, 1979, Boutte Field, St. Charles Parish, Louisiana.

6.   The Simoneaux 10 Sand, Sand Unit A, Sand Unit B, and Sand Unit C, created
     by Department of Conservation Order No. 605-E, dated November 22, 1965,
     effective November 1, 1965, Boutte Field, St. Charles Parish, Louisiana.

7.   The Simoneaux 10 Sand, Sand Unit D, created by Department of Conservation
     Order No. 605-E-1, dated November 15, 1966, effective December 1, 1966,
     Boutte Field, St. Charles Parish, Louisiana.

8.   Supplement to Department of Conservation Order No. 605-E-l, dated January
     3, 1977, effective January 3, 1977, Boutte Field, St. Charles Parish,
     Louisiana.

9.   The 10000 Foot Sand, Reservoir A, Sand Unit A, created by Department of
     Conservation Order No. 605-F, dated December 28, 1979, effective December
     13, 1979, Boutte Field, St. Charles Parish, Louisiana.

          Unit Operating Interest - .7588295 - Unit NRI - .5712350

10.  Supplement to Department of Conservation Order No. 605-F, dated March 12,
     1985, effective March 12, 1985, Boutte Field, St. Charles Parish,
     Louisiana.

11.  Supplement to Department of Conservation Order No. 605-F, dated December
     28, 1989, effective December 28, 1989, Boutte Field, St. Charles Parish,
     Louisiana.
<PAGE>
 
                                   EXHIBIT A                      Page 63 of 64

12.  The Simoneaux 4 Sand, Reservoir A, Sand Unit A, created by Department of
     Conservation Order No. 605-G, dated February 13, 1981, effective October
     21, 1980, Boutte Field, St. Charles Parish, Louisiana.

13.  Supplement to Department of Conservation Order No. 605-G, dated December
     28, 1989, effective December 28, 1989, Boutte Field, St. Charles Parish,
     Louisiana.

14.  The Main Pay Sand Reservoir 100, Sand Unit A, created by Department of
     Conservation Order No. 605-H, dated November 22, 1982, effective September
     29, 1982, Boutte Field, St. Charles Parish, Louisiana.

15.  Supplement to Department of Conservation Order No. 605-H, dated January 6,
     1986, effective January 6, 1986, Boutte Field, St. Charles Parish,
     Louisiana.

16.  Supplement to Department of Conservation Order No. 605-H, dated December
     31, 1984, effective December 31, 1984, Boutte Field, St. Charles Parish,
     Louisiana.

17.  The Simoneaux 2C Sand, Reservoir A, Sand Unit B, created by Department of
     Conservation Order No. 605-J, dated October 30, 1985, effective September
     25, 1985, Boutte Field, St. Charles Parish, Louisiana.

18.  The Simoneaux 2B Sand, Reservoir A, Sand Unit A, created by Department of
     Conservation Order 605-K, dated February 18, 1987, effective February 10,
     1987, Boutte Field, St. Charles Parish, Louisiana.

19.  The ROB-L Sand, Reservoir A, Sand Unit A, created by Department of
     Conservation Order 605-L, dated August 17, 1989, effective August 8, 1989,
     Boutte Field, St. Charles Parish, Louisiana.


                                      III.

                                 SURFACE LEASE
                                  BOUTTE FIELD
                         ST. CHARLES PARISH. LOUISIANA

     That certain Surface Lease dated July 3, 1990, by Gerard M. Simoneaux et
     al, as Lessors, to Texaco, Inc., as Lessee, of record in COB 428, Folio
     127, Entry No. 152744 of the Conveyance Records of St. Charles Parish,
     Louisiana.
<PAGE>
 

                                   EXHIBIT A                       Page 64 of 64


(All recording references in this Exhibit "A" are to the records of Terrebonne
Parish, Louisiana.)

                           OIL GAS AND MINERAL LEASE

     Oil, Gas and Mineral Lease dated December 20, 1985, by Tenneco Oil Company,
     as Lessor, to Amoco Production Company, as Lessee, a declaration of which
     being of record in Conveyance Book 1043, folio 660, Entry No. 774829, as
     amended by Amendment to Lease dated March 30, 1987, of record in COB 1100,
     folio 493, Entry No. 804214.

                                     UNITS

Subject to the following drilling and production units created by the Department
of Conservation or the Office of Conservation Orders:

     1.   Tex W-10 RA SU A created by Order No. 898-G effective February 9,
          1988, supplemented August 3, 1993 (COB 1379, folio 700, Entry No.
          922193), Bayou Dularge Field, Terrebonne Parish, Louisiana.

     2.   Duval RB SU A created by Order No. 898-C-1 effective February 2, 1988,
          Bayou Dularge Field, Terrebonne Parish, Louisiana.

     3.   Tex W-12A RA SU A, created by Order No. 898-H, effective February 9,
          1988, Bayou Dularge Field, Terrebonne Parish, Louisiana.

                                      II.

                                 SURFACE RIGHTS

     Boat Dockage Lease dated May 19, 1993, by Bayou Dularge Marina for a term
     ending May 31, 1998.
 
<PAGE>
 
 
                           SCHEDULE OF RECORDING DATA


     Act of Mortgage, Security Agreement, Assignment of Production and Financing
     Statement dated November 21, 1996, executed by Forman Petroleum
     Corporation, passed before Diane L. Bailey, Notary Public, recorded in the
     following parishes in the State of Louisiana:


 
Parish                              Book       Page/Folio  Entry No.
------                          -------------  ----------  ---------
 
Jefferson                       Mineral Lease     150       96-63909
                                Book 136
                                MOB 3775          163       96-63909
 
Lafourche                       COB 1290          226       806225
                                MOB 728           673       806225
 
St. Charles                     COB 515           663       206916
                                MOB 622           586       206916
 
Terrebonne                      COB 1532                    987329
                                MOB 1081                    987329