Document:

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                                                                     EXHIBIT 4.5

                          REGISTRATION RIGHTS AGREEMENT

           This Registration Rights Agreement (the "AGREEMENT") is entered into
as of the date of closing of the transactions contemplated in that Stock
Purchase and Affiliation Agreement by and among Toreador Royalty Corporation, a
Delaware corporation (the "COMPANY"), and the other parties listed on the
signature page attached hereto (together with their permitted successors and
assigns, the "HOLDERS"). In consideration of the mutual promises herein
contained, and other consideration, the receipt and adequacy of which hereby is
acknowledged, the parties hereto agree as follows:

           1. Certain Definitions. As used in this Agreement, the following
terms shall have the following respective meanings:

                     1.1 "COMMON STOCK" means the common stock of the Company,
$0.15625 par value per share.

                     1.2 "EXCHANGE ACT" shall mean the Securities Exchange Act
of 1934, as amended, and the rules and regulations of the SEC promulgated
thereunder, all as the same shall be in effect at that time.

                     1.3 The terms "REGISTER," "REGISTERED" and "REGISTRATION"
refer to a registration effected by preparing and filing a registration
statement in compliance with the Securities Act (as defined below), and the
declaration or ordering of the effectiveness of such registration statement.

                     1.4 "REGISTRABLE SECURITIES" means (i) the shares of Common
Stock issued to the Holder, and (ii) any other shares of Common Stock issued as
(or issuable upon conversion or exercise of any warrant, right or other security
which is issued as) a dividend or other distribution with respect to or in
exchange for or replacement of the Common Stock issued to the Holder pursuant to
the above-referenced Stock Purchase and Affiliation Agreement, excluding in all
cases, however, any shares of Common Stock sold by a person in a transaction in
which a Holder's registration rights under this Agreement are not assigned
pursuant to Section 9.1 hereof; provided, however, that shares of Common Stock
shall only be treated as Registrable Securities if and so long as they have not
been (A) sold to or through a broker or dealer or underwriter in a public
distribution or a public securities transaction or (B) sold in the opinion of
counsel to the Company in a transaction exempt from the registration and
prospectus delivery requirements of the Securities Act under Section 4(1)
thereof so that all transfer restrictions and restrictive legends with respect
thereto are removed upon the consummation of such sale.

                     1.5 "REGISTRATION EXPENSES" shall mean all expenses
(excluding underwriting discounts and selling commissions) incurred in
connection with a registration under Section 3 hereof, including, without
limitation, all registration and filing fees, printing expenses, fees and
disbursements of counsel for the Company, blue sky fees and expenses, and the
reasonable fees and expenses of one special counsel, not to exceed $10,000, for
all selling Holders.

                     1.6 "SECURITIES ACT" shall mean the Securities Act of 1933,
as amended, and the rules and regulations of the SEC promulgated thereunder, all
as the same shall be in effect at the time.

                     1.7 "SEC" shall mean the Securities and Exchange Commission
or any other federal agency at the time administering the Securities Act.

           2. Restrictive Legend. Each certificate representing (i) shares of
the Company's Common Stock issued upon to the Holder and (ii) any other
securities issued in respect of the Common Stock issued upon any stock split,
stock dividend, recapitalization, merger, consolidation or similar event, shall
(unless otherwise permitted or unless the securities evidenced by such
certificate shall have been registered under the Securities Act) be stamped or
otherwise imprinted with a legend substantially in the following form (in
addition to any legend required under applicable law):

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                     THE SHARES REPRESENTED BY THIS CERTIFICATE HAVE BEEN
                     ACQUIRED FOR INVESTMENT AND HAVE NOT BEEN REGISTERED UNDER
                     THE SECURITIES ACT OF 1933, AS AMENDED (THE "ACT"), OR ANY
                     STATE SECURITIES LAWS. SUCH SHARES MAY NOT BE SOLD OR
                     OFFERED FOR SALE IN THE ABSENCE OF SUCH REGISTRATION OR AN
                     OPINION OF COUNSEL SATISFACTORY TO THE COMPANY AND ITS
                     COUNSEL THAT SUCH REGISTRATION IS NOT REQUIRED UNDER THE
                     ACT.

           Upon request of a holder of such a certificate, the Company shall
remove the foregoing and any other restrictive legend from the certificate or
issue to such holder a new certificate therefor free of any such legends, if,
with such request, the Company shall have received either (i) a written opinion
of legal counsel to the holder who shall be reasonably satisfactory to the
Company, addressed to the Company and reasonably satisfactory in form and
substance to the Company's counsel, to the effect that the proposed transfer of
the shares may be effected without registration under the Securities Act or (ii)
a "no-action" letter from the SEC to the effect that the distribution of such
securities without registration will not result in a recommendation by the staff
of the SEC that action be taken with respect thereto, unless any such legend may
be removed pursuant to Rule 144(k), in which case no such legal opinion or
"no-action" letter shall be required and, in which case, such legend shall be
removed and a new certificate issued within five (5) business days of the
Company's receipt of request by a holder.

           3. Company Registration.

                     3.1 Piggyback. If the Company shall determine to register
any of its equity securities, either for its own account or for the account of a
security holder or holders (other than a registration relating solely to
employee benefit plans, a registration relating solely to a Rule 145
transaction, a registration with respect to an offering of securities solely to
the Company's existing stockholders, or a registration on any registration form
which does not permit secondary sales or does not include substantially the same
information as would be required to be included in a registration statement
covering the sale of Registrable Securities), the Company will:

                          (a) promptly give the Holders written notice thereof;

                          (b) include in such registration, and in any
           underwriting involved therein, all of the Registrable Securities
           specified in a written request or requests made by any Holder within
           fifteen (15) days after receipt of the written notice from the
           Company described in clause (a) above, except as set forth in Section
           3.2 below. Such written request may specify all or a part of the
           Holder's Registrable Securities.

           Notwithstanding anything herein to the contrary, a Holder shall have
no rights under this Section 3.1 during the period that any Registration under
Section 3.3 hereof is in effect.

                     3.2 Underwriting. If the registration of which the Company
gives notice is for a registered public offering involving underwriting, the
Company shall so advise the Holders as a part of the written notice given
pursuant to Section 3.1. In such an event, the right of the Holders to
registration pursuant to Section 3.1 shall be conditioned upon their
participation in the underwriting and the inclusion of their Registrable
Securities in such underwriting to the extent provided herein. The Holders
wishing to include Registrable Securities in the registration and underwriting
shall (together with the Company and the other stockholders distributing their
securities through such underwriting) enter into an underwriting agreement in
customary form with a nationally recognized underwriter selected for
underwriting by the Company. Notwithstanding any other provision of this Section
3, if the underwriter determines that marketing factors require a limitation on
the number of shares to be underwritten, the underwriter may (subject to the
allocation priority set forth below) exclude from such registration and
underwriting up to all of the Registrable Securities which would otherwise be
underwritten pursuant hereto. The Company shall so advise all holders of
securities requesting registration, and the number of shares of securities that
are entitled to be included in the registration and underwriting by persons
other than the Company shall be allocated in the following priority: first,
among the Holders as to their Registrable Securities; and second, among all
other stockholders in proportion, as nearly as practicable, to the respective
amounts of securities which they had requested to be included in such
registration at the time of filing the registration statement. If any Holder or
other stockholder disapproves of the terms of any such underwriting, he may
elect to withdraw therefrom by written notice to the

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Company and the underwriter. Any Registrable Securities or other securities
excluded or withdrawn from such underwriting shall be withdrawn from such
registration.

                     3.3 Shelf. Upon the earlier of (i) 45 days from the Closing
Date or (ii) promptly after such date following the Closing Date on which the
Company shall be eligible to register securities under Form S-3 under the
Securities Act, the Company shall prepare and file with the SEC a registration
statement on any SEC form available to the Company ("REGISTRATION") covering the
Registrable Securities. The offering of such Registrable Securities pursuant to
such Registration shall not be in the form of an underwritten offering. The
Company will use its best efforts to cause the Registration to become effective
as promptly as practicable thereafter. The Company's obligations hereunder shall
be subject to and conditioned on each seller of Registrable Securities as to
which the Registration is being effected furnishing to the Company, and
maintaining, such information regarding matters relating to such shareholder's
Registrable Securities as are customary and as the Company may from time to time
reasonably request in writing. The Company may include in the Registration
securities for its own account or for the account of other third parties
(including officers and employees of the Company), in amounts as determined by
the Company's Board of Directors.

                     3.5 Execution of Documents. No Holder may participate in
any registration pursuant to this Section 3.1 unless such Holder completes and
executes all questionnaires, powers of attorney, indemnities and other documents
reasonably required by the Company or the underwriters.

                     3.6 Termination of Piggyback Rights. The rights granted
pursuant to Section 3.1 shall terminate with respect to the Holder

                               (i) Upon a Holder's ability to sell all of his or
                     its Registrable Securities in a three-month period without
                     registration pursuant to Rule 144(k) promulgated under the
                     Securities Act; or

                               (ii) After the Company has effected three (3)
                     registrations pursuant to this Section 3 which registration
                     statements have included the Holder's Registrable
                     Securities and such registrations have been declared or
                     ordered effective.

           4. Expenses of Registration; Registration Procedures.

                     4.1 Expenses. All Registration Expenses incurred in
connection with any registration, qualification or compliance pursuant to this
Agreement shall be borne by the Company, provided, however, that the Company
shall not be required to pay any Registration Expenses if, as a result of the
withdrawal of a request for registration by the Holders, the registration
statement does not become effective, unless such withdrawal is caused by a
material adverse change in the business or operations of the Company after such
request for registration. If the Company is not required to pay any Registration
Expenses, then the Holders shall bear such Registration Expenses pro rata on the
basis of the number of each Holder's shares so included in the registration
request.

                     4.2 Procedures. If and whenever the Company is required to
effect the registration of any Registrable Securities as provided herein, the
Company will, subject to the limitations provided herein, as expeditiously as
possible:

                               (a) prepare and (as soon thereafter as possible
           or in any event no later than sixty (60) days after the end of the
           period within which requests for registration may be given to the
           Company) file with the SEC the requisite registration statement to
           effect such registration and thereafter use its reasonable best
           efforts to cause such registration statement to become effective and
           remain effective for a period of not less than ninety (90) days or
           until all of such Registrable Securities have been disposed of (if
           earlier);

                               (b) if requested, prior to filing a registration
           statement or prospectus or any amendment or supplement thereto,
           furnish to the Holders requesting registration of Registrable
           Securities and each underwriter, if any, of the Registrable
           Securities covered by such registration statement copies of such
           registration statement or prospectus or any amendment or supplement
           thereto as proposed to be filed;

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                               (c) prepare and file with the SEC such amendments
           and supplements to any registration statement and the prospectus used
           in connection therewith as may be necessary to keep such registration
           statement effective and to comply with the provisions of the
           Securities Act with respect to the disposition of all Registrable
           Securities covered by such registration statement until such time as
           all of such Registrable Securities have been disposed of in
           accordance with the intended methods of disposition by the Holders
           thereof set forth in such registration statement;

                               (d) furnish without charge to each Holder of
           Registrable Securities covered by such registration statement such
           number of conformed copies of such registration statement and of each
           such amendment and supplement thereto (in each case including all
           exhibits), such number of copies of the prospectus contained in such
           registration statement (including each preliminary prospectus and any
           summary prospectus) and any other prospectus filed under Rule 424
           under the Securities Act, and such other documents, as such Holder
           may reasonably request;

                               (e) use its reasonable best efforts to register
           or qualify all Registrable Securities and other securities covered by
           such registration statement under such other securities or blue sky
           laws of such jurisdictions as any Holder shall reasonably request, to
           keep such registration or qualification in effect for so long as such
           registration statement remains in effect (provided, however, that the
           Company shall not in any event be required to keep such registration
           or qualification in effect for a period of more than ninety (90) days
           after such registration or qualification becomes effective), and take
           any other action which may be reasonably necessary or advisable to
           enable any Holder to consummate the disposition in such jurisdictions
           of the securities owned by such Holder, except that the Company shall
           not for any such purpose be required to qualify generally to do
           business as a foreign corporation in any jurisdiction wherein it
           would not but for the requirements of this Section 4.2(e) be
           obligated to be so qualified or to consent to general service of
           process in any such jurisdiction;

                               (f) use its reasonable best efforts to cause all
           Registrable Securities covered by such registration statement to be
           registered with or approved by such other United States Federal or
           state governmental agencies or authorities as may be necessary to
           enable the Holders thereof to consummate the disposition of such
           Registrable Securities;

                               (g) furnish to the underwriters in an
           underwritten offering a copy or, upon request, a signed counterpart,
           addressed to the underwriters, of:

                                          (i) an opinion of counsel for the
                     Company (reasonably acceptable to the underwriters), dated
                     the date of the closing under the underwriting agreement,
                     and

                                          (ii) a "comfort" letter, dated the
                     date of the closing under the underwriting agreement,
                     signed by the independent public accountants who have
                     audited the Company's financial statements included in such
                     registration statement,

           covering substantially the same matters with respect to such
           registration statement (and the prospectus included therein) and, in
           the case of the accountants' letter, with respect to events
           subsequent to the date of such financial statements, as are
           customarily covered in opinions of issuer's counsel and in
           accountants' letters delivered to the underwriters in underwritten
           public offerings of securities and, in the case of the accountants'
           letter, such other financial matters, and, in the case of the legal
           opinion, including to the effect that (i) a registration statement
           covering Registrable Securities has been filed with the SEC under the
           Securities Act and has been made effective by order of the SEC; (ii)
           a prospectus meeting the requirements as to form and content of the
           Securities Act is available for delivery in connection with the
           disposition of the Registrable Securities; (iii) to the best of such
           counsel's knowledge, no stop order has been issued by the SEC
           suspending the effectiveness of such registration statement; (iv) to
           the best of such counsel's knowledge, no proceedings for the issuance
           of such a stop order are threatened or contemplated; and (v) such
           counsel has no reason to believe that the registration statement and
           prospectus, at the time the registration statement became effective,
           contained any untrue statement of material fact or omitted to state
           any material fact required to be stated therein or necessary in order
           to make the statements therein, in light

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           of the circumstances under which they were made, not misleading, and
           addressing such other legal matters, as the underwriters may
           reasonably request;

                               (h) notify each Holder of Registrable Securities
           covered by such registration statement, at any time when a prospectus
           relating thereto is required to be delivered under the Securities
           Act, upon discovery that, or upon the happening of any event as a
           result of which, the prospectus included in such registration
           statement, as then in effect, includes an untrue statement of a
           material fact or omits to state any material fact required to be
           stated therein or necessary to make the statements therein not
           misleading, and at the request of any such Holder, prepare and
           furnish to such Holder a reasonable number of copies of a supplement
           to or an amendment of such prospectus as may be necessary so that, as
           thereafter delivered to the purchasers of such securities, such
           prospectus shall not include an untrue statement of a material fact
           or omit to state a material fact required to be stated therein or
           necessary to make the statements therein not misleading;

                               (i) after the filing of the registration
           statement, promptly notify the Holders of any stop order issued or,
           to its knowledge, threatened by the SEC and take all reasonable
           actions required to prevent the entry of such stop order or to remove
           it if entered;

                               (j) provide and cause to be maintained a transfer
           agent for all Registrable Securities covered by such registration
           statement from and after a date not later than the effective date of
           such registration statement;

                               (k) use its reasonable best efforts to list all
           Registrable Securities covered by such registration statement on any
           securities exchange on which any of the Common Stock is then listed;

                               (l) make reasonably available for inspection by
           the Holders requesting registration of Registrable Securities, any
           underwriter participating in any disposition pursuant to such
           registration statement and any attorney, accountant or other
           professional retained by such Holders or underwriter (collectively,
           the "INSPECTORS"), all financial and other records, pertinent
           corporate documents and properties of the Company (collectively, the
           "RECORDS") as shall be reasonably necessary to enable them to
           exercise their due diligence responsibility, and cause the Company's
           officers, directors and employees to supply all information
           reasonably requested by any Inspectors in connection with such
           registration statement. Records which the Company determines, in good
           faith, to be confidential and which it notifies the Inspectors are
           confidential shall not be disclosed by the Inspectors unless (i) the
           disclosure of such Records is necessary to avoid or correct a
           misstatement or omission in such registration statement or (ii) the
           release of such Records is ordered pursuant to a subpoena or other
           order from a court of competent jurisdiction. Each Holder agrees that
           information obtained by it as a result of such inspections shall be
           deemed confidential and shall not be used by it as the basis for any
           market transactions in the securities of the Company or its
           affiliates unless and until such is made generally available to the
           public;

                               (m) otherwise use its reasonable best efforts to
           comply with all applicable rules and regulations of the SEC; and

                               (n) upon the transfer of any Registrable
           Securities by a Holder in connection with a registration hereunder,
           furnish unlegended certificates representing ownership of the
           Registrable Securities in such denominations as shall be requested by
           the Holders or the underwriters.

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           5. Indemnification.

                     5.1 Company. The Company will indemnify the Holders if
Registrable Securities held by the Holders are included in the securities with
respect to which registration, qualification or compliance has been effected
pursuant to this Agreement, and each underwriter, if any, and each person who
controls any underwriter within the meaning of Section 15 of the Securities Act,
against all claims, losses, damages and liabilities (or actions in respect
thereof) arising out of or based on any untrue statement (or alleged untrue
statement) of a material fact contained in any prospectus, offering circular or
other document (including any related registration statement) incident to any
such registration, qualification or compliance, or based on any omission (or
alleged omission) to state therein a material fact required to be stated therein
or necessary to make the statements therein, in light of the circumstances in
which they were made, not misleading, or any violation by the Company of the
Securities Act including any rule or regulation thereunder applicable to the
Company relating to action or inaction required of the Company in connection
with any such registration, qualification or compliance, and will reimburse the
Holders, each such underwriter and each person who controls any such
underwriter, for any legal and any other expenses reasonably incurred in
connection with investigating and defending any such claim, loss, damage,
liability or action, provided that the Company will not be liable in any such
case to the extent that any such claim, loss, damage, liability or expense
arises out of or is based on any untrue statement (or alleged untrue statement)
or omission (or alleged omission) based upon written information furnished to
the Company by the Holders or underwriter and stated to be specifically for use
therein.

                     5.2 Holders. Each Holder will, if Registrable Securities or
other securities held by such Holder are included in the securities as to which
such registration, qualification or compliance is being effected, severally but
not jointly, indemnify the Company, each of its directors, officers and agents
and each underwriter, if any, of the Company's securities covered by such a
registration statement, each person who controls the Company or such underwriter
within the meaning of Section 15 of the Securities Act, against all claims,
losses, damages and liabilities (or actions in respect thereof) arising out of
or based on any untrue statement (or alleged untrue statement) of a material
fact contained in any such registration statement, prospectus, offering circular
or other document, or any omission (or alleged omission) to state therein a
material fact required to be stated therein or necessary to make the statements
therein not misleading, and will reimburse the Company, and such directors,
officers, agents, partners, persons, underwriters or control persons for any
legal or any other expenses reasonably incurred in connection with investigating
of defending any such claim, loss, damage, liability or action, in each case to
the extent, but only to the extent, that such untrue statement (or alleged
untrue statement) or omission (or alleged omission) is made in such registration
statement, prospectus, offering circular or other document in reliance upon and
in conformity with written information furnished to the Company by such Holder
and stated to be specifically for use therein. In no event shall the aggregate
liability of such Holder for indemnification under this Section 5 exceed the
proceeds received by such Holder from the sale of shares in such offering.

                     5.3 Procedures. Each party entitled to indemnification
under this Section 5 (the "INDEMNIFIED PARTY") shall give notice to the party
required to provide indemnification (the "INDEMNIFYING PARTY") promptly after
such Indemnified Party has actual knowledge of any claim as to which indemnity
may be sought and shall permit the Indemnifying Party to assume the defense of
any such claim or any litigation resulting therefrom, provided that counsel for
the Indemnifying Party, who shall conduct the defense of such claim or any
litigation resulting therefrom, shall be approved by the Indemnified Party
(whose approval shall not unreasonably be withheld), and the Indemnified Party
may participate in such defense at such party's expense, and provided further
that the failure of any Indemnified Party to give notice as provided herein
shall not relieve the Indemnifying Party of its obligations under this
Agreement, except to the extent that the Indemnified Party is prejudiced
thereby. Each Indemnified Party shall furnish such information regarding itself
or the claim in question as an Indemnifying Party may reasonably request and as
shall be reasonably required in connection with the defense of such claim and
litigation resulting therefrom. An Indemnified Party shall have the right to
retain its own counsel, with the fees and expenses to be paid by the
Indemnifying Party, if representation of such Indemnified Party by the counsel
retained by the Indemnifying Party would be inappropriate due to actual or
potential differing interests between such Indemnified Party and any other party
represented by such counsel in such proceeding, provided that in no event shall
the Indemnifying Party be required to pay the fees and expenses of more than one
such separate counsel for all Indemnified Parties.

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                     5.4 Equitable Relief. If the indemnification provided for
in this Section 5 is held by a court of competent jurisdiction to be unavailable
to an Indemnified Party with respect to any losses, claims, damages or
liabilities referred to herein, the Indemnifying Party, in lieu of indemnifying
such Indemnified Party thereunder, shall to the extent permitted by applicable
law contribute to the amount paid or payable by such Indemnified Party as the
result of such loss, claim, damage or liability in such proportion as is
appropriate to reflect the relative fault of the Indemnifying Party on the one
hand and of the Indemnified Party on the other in connection with the
allegation(s) that resulted in such loss, claim, damage or liability, as well as
any other relevant equitable considerations. The relative fault of the
Indemnifying Party and of the Indemnified Party shall be determined by a court
of law by reference to, among other things, whether the untrue or alleged untrue
statement of a material fact or the omission to state a material fact relates to
information supplied by the Indemnifying Party or by the Indemnified Party and
the parties' relevant intent, knowledge, access to information and opportunity
to correct or prevent such statement or omission; provided, that in no event
shall any contribution by any Holder hereunder exceed the proceeds from the sale
of shares in the offering received by such Holder.

                     5.5 Survival. The obligations of the Company and the
Holders under this Section 5 shall survive the completion of any offering of
Registrable Securities in a registration statement and the termination of this
Agreement. No Indemnifying Party, in the defense of any such claim or
litigation, shall, except with the prior written consent of each Indemnified
Party (which consent shall not be unreasonably withheld), consent to the entry
of any judgment or enter into any settlement. Unless waived by the Indemnified
Party, all judgments and settlements must include as an unconditional term
thereof the giving by the claimant or plaintiff to such Indemnified Party of a
release from all liability in respect to such claim or litigation.

           6. Rule 144 Reporting. With a view to making available the benefits
of certain rules and regulations of the SEC which may permit the sale of the
Registrable Securities to the public without registration, the Company agrees
to:

                     (a) Make and keep public information available as those
terms are understood and defined in Rule 144 under the Securities Act;

                     (b) Use its reasonable best efforts to file with the SEC in
a timely manner all reports and other documents required of the Company under
the Securities Act and the Exchange Act at any time after the Company has become
subject to such reporting requirements; and

                     (c) So long as the Holders own any Registrable Securities,
furnish to the Holders not more than five (5) business days after request a
written statement by the Company as to its compliance with the reporting
requirements of Rule 144 (at any time from and after ninety (90) days following
the effective date of the first registration statement filed by the Company for
an offering of its securities to the general public), and of the Securities Act
and the Exchange Act (at any time after it has become subject to such reporting
requirements).

           7. Standoff Agreement. In connection with any Company underwritten
public offering, if requested by the managing underwriter, the Holders agree not
to sell, agree or contract to sell, make any short sale of, loan, grant any
option or warrant for the purchase of, or otherwise dispose of any Registrable
Securities (other than those included in the public offering, if any) without
the prior written consent of the Company or the underwriters for such period of
time (not to exceed ninety (90) days in the event of any public offering) as may
be requested by the Board of Directors of the Company and the managing
underwriter.

           8. Termination of Rights. The provisions of this Agreement, except
the provisions in Section 5 of this Agreement, shall terminate as to any Holder,
upon the date on which all Registrable Securities held by such Holder (and any
affiliate of the Holder with whom such Holder must aggregate its shares under
Rule 144) may be sold pursuant to Rule 144 in any three (3) month period.

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           9. Miscellaneous.

                     9.1 Transfer or Assignment of Registration Rights. The
rights to cause the Company to register the Holders' securities granted by the
Company under Section 3 hereof may be transferred or assigned by the Holders to
such Holders' partners and affiliates of any of the Registrable Securities
("REGISTRATION RIGHTS TRANSFEREE"), provided that the Company is given written
notice by the Holders at the time of said transfer or assignment, stating the
name and address of said Registration Rights Transferee and identifying the
securities with respect to which such registration rights are being transferred
or assigned, and provided further that the Registration Rights Transferee is not
deemed by the Board of Directors of the Company, in its reasonable judgment, to
be a competitor of the Company; and provided further that the Registration
Rights Transferee assumes the obligations of the Holders under this Agreement.
Any purported assignment not in compliance with this Section 9.1 shall be null
and void ab initio.

                     9.2 Governing Law. This Agreement shall be governed by and
construed under the laws of the State of Texas as applied to agreements entered
into solely between residents of and to be performed entirely within such state.
As part of the consideration for value received pursuant to this Agreement, and
regardless of the location of any present or future domicile or principal place
of business of either party, each party hereby irrevocably consents in advance
to the personal jurisdiction of the District Court of Dallas County, Texas, or
the United States District Court for the Northern District of Texas, Dallas
Division, to hear and determine any claims or disputes brought against such
party by the other party and pertaining to this Agreement or to any matter
relating to or arising out of this Agreement.

                     9.3 Counterparts. This Agreement may be executed in one or
more counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument.

                     9.4 Titles and Subtitles. The titles and subtitles used in
this Agreement are used for convenience only and are not to be considered in
construing or interpreting this Agreement.

                     9.5 Notices, Etc. All notices and other communications
required or permitted hereunder shall be in writing and shall be mailed by
first-class mail, postage prepaid, or otherwise delivered by hand or by
messenger, addressed (a) if to any Holder, at the address set forth on the
signature page attached hereto, or at such other address as such Holder shall
have furnished to the Company and the other Holders in writing, or (b) if to the
Company, at the address of its principal offices set forth on the signature page
of this Agreement, or at such other address as the Company shall have furnished
to the Holders hereto in writing.

                     9.6 Expenses. If any action at law or in equity (including
arbitration) is necessary to enforce or interpret the terms of this Agreement,
the prevailing party shall be entitled to reasonable attorneys' fees, expenses
and necessary disbursements in addition to any other relief to which such party
may be entitled.

                     9.7 Amendments and Waivers. Any term of this Agreement may
be amended with the written consent of the Board of Directors of the Company and
the holders of at least fifty percent (50%) of the outstanding Registrable
Securities. Any amendment or waiver effected in accordance with this Section 9.7
shall be binding upon the Holders, each transferee of the Registrable
Securities, each future holder of all such Registrable Securities, and the
Company.

                     9.8 Severability. If one or more provisions of this
Agreement are held to be unenforceable under applicable law, portions of such
provisions, or such provisions in their entirety, to the extent necessary, shall
be severed from this Agreement, and the balance of the Agreement shall be
interpreted as if such provision were so excluded and shall be enforceable in
accordance with its terms.

                     9.9 Delays or Omissions. No delay or omission to exercise
any right, power or remedy accruing to any party to this Agreement, upon any
breach or default of any other party, shall impair any such right, power or
remedy of such non-breaching party nor shall it be construed to be a waiver of
any such breach or default, or an acquiescence therein, or of any similar breach
or default thereafter occurring; nor shall any waiver of any single breach or
default be deemed a waiver of any other breach or default theretofore or
thereafter occurring. Any

                                       8
<PAGE>   9

waiver, permit, consent or approval of any kind or character on the part of any
party of any breach or default under this Agreement, or any waiver on the part
of any party of any provisions or conditions of this Agreement, must be made in
writing and shall be effective only to the extent specifically set forth in such
writing. All remedies, either under this Agreement, or by law or otherwise
afforded to the Holders, shall be cumulative and not alternative.

                     9.10 Entire Agreement. This Agreement and the documents
referred to herein constitute the entire agreement between the parties hereto
pertaining to the subject matter hereof and any other written or oral agreements
between the parties hereto are expressly canceled. Nothing in this Agreement,
express or implied, is intended to confer upon any party, other than the parties
hereto and their respective permitted assigns, any rights, remedies, obligations
or liabilities under or by reason of this Agreement, and no person who is not a
party to this Agreement may rely on the terms hereof.

                     9.11 Aggregation of Stock. All Registrable Securities held
or acquired by affiliated entities or persons shall be aggregated for the
purposes of determining the availability of any right under this Agreement.

                  [Remainder of Page Intentionally Left Blank]

                                       9
<PAGE>   10

           IN WITNESS WHEREOF, the parties hereto have executed this
Registration Rights Agreement as of the Effective Date.

                          COMPANY:

                          TOREADOR ROYALTY CORPORATION

                          By:     /s/ G. THOMAS GRAVES III
                                  Name: G. Thomas Graves III
                                  Title: President and Chief Executive Officer

                          HOLDERS:

                                    /s/ WILLIAM W. BRITAIN
                          ------------------------------------------------
                          Print Name:  William W. Britain
                          Address:   7201 I-40 West, Suite 319
                                     Amarillo, Texas  79106

                                    /s/ JIM J. BREWER
                          ------------------------------------------------
                          Print Name:  Jim J. Brewer
                          Address:   7201 I-40 West, Suite 319
                                     Amarillo, Texas  79106

                                    /s/ DOUG FERGUSON
                          ------------------------------------------------
                          Print Name:  Doug Ferguson
                          Address:   P.O. Box 45
                                     Palestine, Texas  75802

                                    /s/ CYNTHIA FERGUSON
                          ------------------------------------------------
                          Print Name:  Cynthia Ferguson
                          Address:   3970 N. Story Road, Apt. 1536
                                     Irving, Texas  75038

                                    /s/ DALE ALEXANDER SMITH
                          ------------------------------------------------
                          Print Name: Dale Alexander Smith
                          Address:   P.O. Box 15305
                                     Amarillo, Texas  79105

                                    /s/ ALLEN CURRIE SMITH, JR.
                          ------------------------------------------------
                          Print Name:  Allen Currie Smith, Jr.
                          Address:   1505 S. Austin
                                     Amarillo, Texas  79102

                                    /s/ JIM FERGUSON
                          ------------------------------------------------
                          Print Name:  Jim Ferguson
                          Address:   7201 I-40 West, Suite 319
                                     Amarillo, Texas  79106

                                    /s/ PETER G. FAGAN, M.D.
                          ------------------------------------------------
                          Print Name:  Peter G. Fagan, M.D.
                          Address:   P. O. Box 488
                                     DeLeon, Texas  76444

                                       10
<PAGE>   11

                                    /s/ DUDLEY R. STANLEY
                          ------------------------------------------------
                          Print Name:  Dudley R. Stanley
                          Address:   P.O. Box 7586
                                     Amarillo, Texas  79114

                                    /s/ A. C. SMITH
                          ------------------------------------------------
                          Print Name:  A. C. Smith
                          Address:   3602 S. Washington
                                     Amarillo, Texas  79110

                                    /s/ ELLEN S. BIVINS
                          ------------------------------------------------
                          Print Name: Ellen S. Bivins
                          Address:   3602 S. Washington
                                     Amarillo, Texas  79110

                                    /s/ JOHN G. O'BRIEN
                          ------------------------------------------------
                          Print Name: John G. O'Brien
                          Address:   800 S. Monroe
                                     Amarillo, Texas  79101

                                    /s/ FAY MOORE
                          ------------------------------------------------
                          Print Name:  Fay Moore
                          Address:   800 S. Monroe
                                     Amarillo, Texas  79101

                                    /s/ TEEL BIVINS
                          ------------------------------------------------
                          Print Name:  Teel Bivins
                          Address:   P.O. Box 15305
                                     Amarillo, Texas  79105

                                    /s/ MARK BIVINS
                          ------------------------------------------------
                          Print Name:  Mark Bivins
                          Address:   P.O. Box 708
                                     Amarillo, Texas  79105

                                    /s/ TOM BIVINS
                          ------------------------------------------------
                          Print Name:  Tom Bivins
                          Address:   P.O. Box 15305
                                     Amarillo, Texas  79105

                                    /s/ DUSTY SANDERSON
                          ------------------------------------------------
                          Print Name: Dusty Sanderson
                          Address:   6405 Kingsbury
                                     Amarillo, Texas  79109

                                       11<PAGE>   1

                                                                     EXHIBIT 4.6

================================================================================

                          REGISTRATION RIGHTS AGREEMENT

                           DATED AS OF AUGUST 1, 2000

                                 BY AND BETWEEN

                         TOREADOR RESOURCES CORPORATION

                                       AND

                     EARL E. ROSSMAN, JR., AS REPRESENTATIVE
                       OF THE HOLDERS (AS DEFINED HEREIN)

================================================================================

<PAGE>   2

                                TABLE OF CONTENTS

<TABLE>
<S>      <C>                                                                                                    <C>
ARTICLE I.........................................................................................................1
         Section 1.01.     Definitions............................................................................1

ARTICLE II........................................................................................................2
         Section 2.01.     Merger Registration....................................................................2
         Section 2.02.     Contingent Registration................................................................3
         Section 2.03.     Registration Procedures................................................................3
         Section 2.04.     Expenses...............................................................................5
         Section 2.05.     Obligations of Holders and Others in Registration......................................5
         Section 2.06.     Indemnification........................................................................6

ARTICLE III.......................................................................................................8
         Section 3.01.     Communications.........................................................................8
         Section 3.02.     Counterparts...........................................................................8
         Section 3.03.     Headings...............................................................................8
         Section 3.04.     Governing Law..........................................................................8
         Section 3.05.     Severability of Provisions.............................................................8
         Section 3.06.     Entire Agreement.......................................................................8
         Section 3.07.     Attorneys' Fees........................................................................9
         Section 3.08.     Amendment..............................................................................9
         Section 3.09.     Successors and Assigns.................................................................9
</TABLE>

<PAGE>   3

                          REGISTRATION RIGHTS AGREEMENT

                  This Registration Rights Agreement ("Agreement") is made and
entered into as of August 1, 2000, by and between Toreador Resources
Corporation, a Delaware corporation (the "Company"), and Earl E. Rossman, Jr.,
the Representative of the Holders (as defined below).

                  This Agreement is made pursuant to the Agreement and Plan of
Merger by and among the Company, Toreador Acquisition Corporation, a
wholly-owned subsidiary of the Company (the "Merger Sub"), and Texona Petroleum
Corporation ("Texona") dated as of August 1, 2000 (the "Agreement and Plan of
Merger"). Pursuant to the terms of the Agreement and Plan of Merger, the Company
has agreed to provide the registration and other rights set forth in this
Agreement. The execution and delivery of this Agreement is a condition to the
Closing (as defined in the Agreement and Plan of Merger) under the Agreement and
Plan of Merger.

                  The parties agree as follows:

                                    ARTICLE I

                  Section 1.01. Definitions. Capitalized terms used and not
otherwise defined herein which are defined in the Agreement and Plan of Merger
are used herein as so defined. The terms set forth below are used herein as so
defined:

                  "Contingent Registrable Securities" means (i) the Contingent
Shares (as defined below) and (ii) any shares of common stock of the Company,
$0.15625 par value (the "Common Stock") issued or issuable at any time or from
time to time prior to the filing of the Contingent Registration Statement (as
defined below) in respect of the Contingent Shares upon a stock split, stock
dividend, recapitalization or other similar event involving the Company.

                  "Contingent Registration Statement" means a registration
statement or statements on a form available to the Company to register for sale
all of the Contingent Registrable Securities to the extent beneficially owned by
the Holders on the date of filing such registration statement pursuant to a
non-underwritten offering.

                  "Contingent Shares" means any shares of Common Stock obtained
pursuant to the Merger (as defined below) which are subject to issuance on or
prior to June 1, 2001 in accordance with the terms of the Agreement and Plan of
Merger.

                  "Holder" means the record holder of (i) any Merger Shares,
(ii) any Contingent Shares, (iii) any Merger Registrable Securities (as defined
below), or (iv) any Contingent Registrable Securities.

                  "Merger" means the merger of the Merger Sub with and into
Texona.

                  "Merger Date" means the date the closing of the transactions
contemplated by the Agreement and Plan of Merger occurs, except for the issuance
of the Contingent Shares.

                                       1
<PAGE>   4

                  "Merger Registrable Securities" means (i) the Merger Shares
and (ii) any shares of Common Stock issued or issuable at any time or from time
to time prior to the filing of the Merger Registration Statement (as defined
below) in respect of the Merger Shares upon a stock split, stock dividend,
recapitalization or other similar event involving the Company.

                  "Merger Registration Statement" means a registration statement
or statements on a form then available to the Company to register for resale all
of the Merger Registrable Securities to the extent beneficially owned by the
Holders on the date of filing of the registration statement pursuant to a
non-underwritten offering.

                  "Merger Shares" means any shares of Common Stock obtained on
the Merger Date pursuant to the Merger.

                  "Representative of the Holders" means Earl E. Rossman, Jr.
with all the powers as set forth in Section 3.4 of the Agreement and Plan of
Merger.

                                   ARTICLE II

                  Section 2.01. Merger Registration. (a) Any time on or after
November 1, 2000 and prior to December 31, 2000 (the "Merger Registration Filing
Period"), the Company shall file under the Securities Act of 1933, as amended
(the "Securities Act"), the Merger Registration Statement so that the Merger
Registrable Securities may be sold in such manner as the Holders thereof shall
determine.

                  (b) As expeditiously as reasonably practicable after filing,
the Company shall use its reasonable best efforts to have declared effective the
Merger Registration Statement. Notwithstanding anything to the contrary
contained herein, the Company may delay the filing or effectiveness of the
Merger Registration Statement for up to 180 days after the end of the Merger
Registration Filing Period (i) if the Company is engaged in or contemplating
within the Merger Registration Filing Period a public underwritten offering of
its securities and the Company reasonably believes that the filing or
effectiveness of the Merger Registration Statement could adversely affect the
offering covering the Merger Registrable Securities or (ii) the Board of
Directors of the Company determines in its reasonable judgment and in good faith
that the filing or effectiveness of the Merger Registration Statement or the
making of any required disclosure in connection therewith would have a material
adverse effect on the Company or substantially interfere with a significant
transaction in which the Company is then engaged.

                  (c) The Company shall be entitled to include in the Merger
Registration Statement filed pursuant to this Section 2.01, securities of the
Company to be sold by the Company for its own account. Any Person other than a
Holder entitled to piggy-back registration rights with respect to the Merger
Registration Statement filed pursuant to this Section 2.01 may include
securities of the Company with respect to which such rights apply in the Merger
Registration Statement for sale.

                  (d) The Company hereby agrees to use its best reasonable
efforts to keep the Merger Registration Statement effective for a period of at
least one hundred eighty (180) days

                                       2
<PAGE>   5

following its effectiveness (unless all of the Merger Registrable Securities are
sold or otherwise disposed of prior thereto (the "Merger Registration Period")).

                  Section 2.02. Contingent Registration. (a) Within 180 days
following issuance of the Contingent Registrable Shares (the "Contingent
Registration Filing Period"), the Company shall file under the Securities Act,
the Contingent Registration Statement so that the Contingent Registrable
Securities may be sold in such manner as the Holders thereof shall determine.

                  (b) As expeditiously as reasonably practicable after filing,
the Company shall use its reasonable best efforts to have declared effective the
Contingent Registration Statement. Notwithstanding anything to the contrary
contained herein, the Company may delay the filing or effectiveness of the
Contingent Registration Statement for up to 180 days after the end of the
Contingent Registration Filing Period (i) if the Company is engaged in or
contemplating within the Contingent Registration Filing Period a public
underwritten offering of its securities and the Company reasonably believes that
the filing or effectiveness of the Contingent Registration Statement could
adversely affect the offering covering the Contingent Registrable Securities or
(ii) the Board of Directors of the Company determines in its reasonable judgment
and in good faith that the filing or effectiveness of the Contingent
Registration Statement or the making of any required disclosure in connection
therewith would have a material adverse effect on the Company or substantially
interfere with a significant transaction in which the Company is then engaged.

                  (c) The Company shall be entitled to include in the Contingent
Registration Statement filed pursuant to this Section 2.02, securities of the
Company to be sold by the Company for its own account. Any Person other than a
Holder entitled to piggy-back registration rights with respect to the Contingent
Registration Statement filed pursuant to this Section 2.02 may include
securities of the Company with respect to which such rights apply in the
Contingent Registration Statement for sale.

                  (d) The Company hereby agrees to use its best reasonable
efforts to keep the Contingent Registration Statement effective for a period of
at least one hundred eighty (180) days following its effectiveness (unless all
of the Contingent Registrable Securities are sold or otherwise disposed of prior
thereto (the "Contingent Registration Period")).

                  Section 2.03. Registration Procedures. When the Company is
required pursuant to this Agreement to effect the registration of the Merger
Registrable Securities or the Contingent Registrable Securities under the
Securities Act, the Company will:

                  (a) as expeditiously as reasonably practicable, prepare and
file with the Commission such amendments and supplements to the Merger
Registration Statement and the Contingent Registration Statement and the
prospectus used in connection therewith as may be necessary to keep the Merger
Registration Statement and the Contingent Registration Statement effective (i)
until, with respect to the Merger Registration Statement, the earlier of the end
of the Merger Registration Period or the sale or disposition of all of the
Merger Registrable Securities, (ii) until, with respect to the Contingent
Registration Statement, the earlier of the end of the Contingent Registration
Period or the sale or disposition of all of the Contingent Registrable
Securities, (iii) as may be necessary to comply with the provisions of the
Securities Act with respect to the disposition

                                       3
<PAGE>   6

of the Merger Registrable Securities covered by the Merger Registration
Statement in accordance with the intended method of disposition set forth in
such Merger Registration Statement for such period, and (iv) as may be necessary
to comply with the provisions of the Securities Act with respect to the
disposition of the Contingent Registrable Securities covered by the Contingent
Registration Statement in accordance with the intended method of disposition set
forth in such Contingent Registration Statement for such period,

                  (b) as expeditiously as reasonably practicable, furnish to
each Holder such number of copies of the prospectus and the preliminary
prospectus in conformity with the requirements of the Securities Act, and such
other documents as the Holders may reasonably request, in order to facilitate
the public sale or disposition of the Merger Registrable Securities and
Contingent Registrable Securities; provided, however, that the obligation of the
Company to deliver copies of prospectuses or preliminary prospectuses to the
Holders shall be subject to the receipt by the Company of reasonable assurances
from the Holders that they will comply with the applicable provisions of the
Securities Act and of such other securities laws as may be applicable in
connection with any use by them of any prospectus or preliminary prospectus;

                  (c) as expeditiously as reasonably practicable, use its
reasonable best efforts to register or qualify (i) the Merger Registrable
Securities covered by the Merger Registration Statement and (ii) the Contingent
Registrable Securities covered by the Contingent Registration Statement under
the securities or blue sky laws of such jurisdictions as the Holders shall
reasonably request (considering the nature and size of the offering) and do any
and all other acts and things which may be necessary or desirable to enable the
Holders to consummate the public sale or other disposition in such jurisdictions
of the Merger Registrable Securities and/or the Contingent Registrable
Securities; provided, however, that the Company will not be required to qualify
to transact business as a foreign corporation in any jurisdiction in which it
would otherwise not be required to be so qualified or to take any action which
would subject it to general service of process in any jurisdiction in which it
is not then so subject;

                  (d) as expeditiously as reasonably practicable, notify each
Holder, at any time when a prospectus relating thereto is required to be
delivered under the Securities Act, of the happening of any event as a result of
which the prospectus contained in the Merger Registration Statement or the
Contingent Registration Statement, as appropriate, as then in effect, includes
an untrue statement of a material fact or omits to state any material fact
required to be stated therein or necessary to make the statements therein not
misleading in the light of the circumstances then existing and as promptly as
practicable amend the Merger Registration Statement or Contingent Registration
Statement or supplement the prospectus or take other appropriate action so that
the prospectus does not include an untrue statement of a material fact or omit
to state a material fact required to be stated therein or necessary to make the
statements therein not misleading in the light of the circumstances then
existing; provided, however, that, in the case of a shelf registration, the
Company, on one occasion, may delay taking such action for a period of 45 days,
during which time the Holders shall not sell any Merger Registrable Securities
or Contingent Registrable Securities, as appropriate, if the Board of Directors
determines in its reasonable judgment and in good faith that the making of any
required disclosure in connection therewith would have a material adverse effect
on the Company or substantially interfere with a significant transaction in
which the Company is then engaged;

                                       4
<PAGE>   7

                  (e) during the Merger Registration Period and the Contingent
Registration Period, use its reasonable best efforts to keep effective and
maintain a registration, qualification, approval or listing obtained to cover
the Merger Registrable Securities and the Contingent Registrable Securities, as
appropriate, as may be necessary for the Holders to dispose thereof and shall
from time to time amend or supplement any prospectus used in connection
therewith to the extent necessary in order to comply with applicable law;

                  (f) use its reasonable best efforts to cause the Merger
Registrable Securities and the Contingent Registrable Securities to be
registered with or approved by such other governmental agencies or authorities
as may be necessary by virtue of the business and operations of the Company to
enable the Holders to consummate the disposition of such Merger Registrable
Securities and Contingent Registrable Securities; and

                  (g) enter into customary agreements and take such other
actions as are reasonably requested by the Holders in order to expedite or
facilitate the disposition of such Merger Registrable Securities and Contingent
Registrable Securities.

                  Section 2.04. Expenses. (a) All expenses incident to the
Company's performance under or compliance with this Agreement, including without
limitation, all registration and filing fees, blue sky fees and expenses,
printing expenses, listing fees, fees and disbursements of counsel and
independent public accountants for the Company, fees of the National Association
of Securities Dealers, Inc., transfer taxes, fees of transfer agents and
registrars, but excluding any Selling Expenses (as defined below), are herein
called "Registration Expenses." All brokerage and selling commissions allocable
to the sale of the Merger Registrable Securities and the Contingent Registrable
Securities and fees and expenses of counsel for the Holders applicable to the
sales by the Holders in connection with any such registration are herein called
"Selling Expenses."

                  (b) The Company will pay all Registration Expenses in
connection with the Merger Registration Statement and Contingent Registration
Statement filed pursuant to this Agreement, whether or not the Merger
Registration Statement or Contingent Registration Statement becomes effective,
and the Holders shall pay Selling Expenses in connection with any Merger
Registrable Securities and any Contingent Registrable Securities registered
pursuant to this Agreement.

                  Section 2.05. Obligations of Holders and Others in
Registration. Each Holder agrees to furnish such information regarding such
Holder and the Merger Registrable Securities and the Contingent Registrable
Securities owned by such Holder and to take such other action as the Company may
reasonably request in connection with the registration, qualification or listing
of the Merger Registrable Securities and Contingent Registrable Securities. The
Company may exclude from the Merger Registration Statement and Contingent
Registration Statement, as appropriate, any Holder that timely fails to comply
with the provisions of the preceding sentence. Each Holder agrees not to affect
the sale of securities under the Merger Registration Statement or Contingent
Registration Statement until such Holder has received a prospectus, as needed,
and notice of the effectiveness of the Merger Registration Statement or
Contingent Registration Statement, as appropriate, of which the prospectus forms
a part.

                                       5
<PAGE>   8

                  Section 2.06. Indemnification. (a) In the event of the
registration of any Merger Registrable Securities or any Contingent Registrable
Securities under the Securities Act pursuant to this Agreement, the Company will
indemnify and hold harmless each Holder thereunder and each Person, if any, who
controls the Holders within the meaning of Section 15 of the Securities Act,
against any losses, claims, damages or liabilities (including reasonable
attorneys' fees) or actions in respect thereof ("Losses"), joint or several, to
which such Holder or controlling Person may become subject under the Securities
Act, or otherwise, insofar as such Losses, arise out of or are based upon any
untrue statement or alleged untrue statement of any material fact contained in
the Merger Registration Statement or the Contingent Registration Statement on
the effective date thereof under which such Merger Registrable Securities or
Contingent Registrable Securities, as appropriate, were registered under the
Securities Act pursuant to this Agreement, any preliminary prospectus
distributed with the consent of the Company or final prospectus contained
therein, or any amendment or supplement thereof, including the documents
incorporated by reference therein, or arise out of or are based upon the
omission or alleged omission to state therein a material fact required to be
stated therein or necessary to make the statements therein not misleading, and
will reimburse each such Holder and each such controlling Person for any legal
or other expenses reasonably incurred by them in connection with investigating
or defending any such Loss; provided, however, that the Company will not be
liable in any such case if and to the extent that any such Loss arises out of or
is based upon an untrue statement or alleged untrue statement or omission or
alleged omission so made in conformity with information furnished by such Holder
or such controlling Person in writing specifically for use in the Merger
Registration Statement or the Contingent Registration Statement, preliminary
prospectus, final prospectus or such amendment or supplement thereof, including
all documents incorporated by reference therein.

                  (b) In the event of the registration of any Merger Registrable
Securities or Contingent Registrable Securities under the Securities Act
pursuant to the Agreement, the Holders, jointly and severally, agree to
indemnify and hold harmless the Company, its directors, officers, employees and
agents, and each Person, if any, who controls the Company within the meaning of
Section 15 of the Securities Act against any and all such Losses to which the
Company or such directors, officers, employees, agents or controlling Persons
may become subject under the Securities Act or otherwise, and will reimburse the
Company, each such director, officer, employee, agent and controlling Person for
any legal or any other expenses reasonably incurred by such party in connection
with investigating or defending any such Loss, if (a) such Loss arises out of or
is based upon any untrue statement or alleged untrue statement of any material
fact contained in the Merger Registration Statement or the Contingent
Registration Statement, preliminary prospectus, final prospectus or such
amendment or supplement thereof, including all documents incorporated by
reference therein or arises out of or is based upon the omission or alleged
omission to state therein a material fact required to be stated therein or
necessary to make the statements therein not misleading, and any such statement
or omission of a material fact was made in reliance upon and in conformity with
the written information furnished to the Company by or on behalf of the Holders
specifically for use in connection with the preparation of the Merger
Registration Statement or the Contingent Registration Statement, preliminary
prospectus, final prospectus or such amendment or supplement thereof, including
all documents incorporated by reference therein, or (b) such Loss arises out of
or is based upon the Holder's failure to deliver any required prospectus or
otherwise comply with applicable laws regarding the same; provided, however,
that the liability of such Holder shall not be greater in amount than the dollar
amount of the proceeds (net of any Selling Expenses) received by such Holder
from

                                       6
<PAGE>   9

the sale of the Merger Registrable Securities or Contingent Registrable
Securities giving rise to such indemnification.

                  (c) Promptly after receipt by an indemnified party hereunder
of notice of the commencement of any action, such indemnified party shall, if a
claim in respect thereof is to be made against the indemnifying party hereunder,
notify the indemnifying party in writing thereof, but the omission so to notify
the indemnifying party shall not relieve it from any liability which it may have
to any indemnified party other than under this Section 2.06. In case any such
action shall be brought against any indemnified party and it shall notify the
indemnifying party of the commencement thereof, the indemnifying party shall be
entitled to participate in and, to the extent it shall wish, to assume and
undertake the defense thereof with counsel reasonably satisfactory to such
indemnified party and, after notice from the indemnifying party to such
indemnified party of its election so to assume and undertake the defense
thereof, the indemnifying party shall not be liable to such indemnified party
under this Section 2.06 for any legal expenses subsequently incurred by such
indemnified party in connection with the defense thereof other than reasonable
costs of investigation and of liaison with counsel so selected; provided,
however, that, (i) if the indemnifying party has failed to assume the defense
and employ counsel or (ii) if the defendants in any such action include both the
indemnified party and the indemnifying party and counsel to the indemnified
party shall have concluded that there may be reasonable defenses available to
the indemnified party that are different from or additional to those available
to the indemnifying party or if the interests of the indemnified party
reasonably may be deemed to conflict with the interests of the indemnifying
party, then the indemnified party shall have the right to select a separate
counsel and to assume such legal defense and otherwise to participate in the
defense of such action, with the expenses and fees of such separate counsel and
other expenses related to such participation to be reimbursed by the
indemnifying party as incurred, provided that such fees and expenses shall be
reimbursed for only one counsel for all indemnified parties in addition to any
local counsel.

                  (d) If the indemnification provided for in this Section 2.06
is unavailable to the Company or the Holders or is insufficient to hold them
harmless in respect of any losses, claims, damages, liabilities or expenses
referred to herein, then each such indemnifying party, in lieu of indemnifying
such indemnified party, shall contribute to the amount paid or payable by such
indemnified party as a result of such losses, claims, damages, liabilities and
expenses as between the Company on the one hand and each Holder on the other, in
such proportion as is appropriate to reflect the relative fault of the Company
on the one hand and of each Holder on the other in connection with the
statements or omissions which resulted in such Losses, as well as any other
relevant equitable considerations. The relative fault of the Company on the one
hand and each Holder on the other shall be determined by reference to, among
other things, whether the untrue or alleged untrue statements of a material fact
or the omission or alleged omission to state a material fact has been made by,
or relates to, information supplied by such party, and the parties' relative
intent, knowledge, access to information and opportunity to correct or prevent
such statement or omission.

                  No person of fraudulent misrepresentation (within the meaning
of Section 11(f) of the Securities Act) shall be entitled to contribution from
any Person who is not guilty of such fraudulent misrepresentation.

                                       7
<PAGE>   10

                                   ARTICLE III

                  Section 3.01. Communications. All notices and other
communications provided for or permitted hereunder shall be made in writing by
telecopy, courier service or personal delivery:

                  (a) if to a Holder, to the Representative of the Holders at
the address set forth in the Agreement and Plan of Merger; and

                  (b) if to the Company, initially at its address set forth in
the Agreement and Plan of Merger and thereafter at such other address, notice of
which is given in accordance with the provisions of this Section 3.01.

                  All such notices and communications shall be deemed to have
been received at the time delivered by hand, if personally delivered; when
receipt acknowledged, if telecopied; and on the next Business Day if timely
delivered to an air courier guaranteeing overnight delivery.

                  Section 3.02. Counterparts. This Agreement may be executed in
any number of counterparts and by different parties hereto in separate
counterparts, each of which counterparts, when so executed and delivered, shall
be deemed to be an original and all of which counterparts, taken together, shall
constitute but one and the same Agreement.

                  Section 3.03. Headings. The headings in this Agreement are for
convenience of reference only and shall not limit or otherwise affect the
meaning hereof.

                  Section 3.04. Governing Law. (a) The laws of the State of
Texas shall govern this Agreement without regard to principles of conflict of
laws.

                  (b) Any dispute, controversy or claim arising out of or
relating to this Agreement, or any breach of this Agreement, shall be settled by
binding arbitration as the exclusive and sole dispute resolution mechanism. The
arbitration shall be held in accordance with the Commercial Arbitration Rules
(the "Rules") of the American Arbitration Association ("AAA") by one or more
arbitrators selected in accordance with the Rules. The arbitration shall be held
in Dallas, Texas. The award and all decisions of the arbitrator(s) shall be
final and binding on all the parties.

                  Section 3.05. Severability of Provisions. Any provision of
this Agreement which is prohibited or unenforceable in any jurisdiction shall,
as to such jurisdiction, be ineffective to the extent of such prohibition or
unenforceability without invalidating the remaining provisions hereof or
affecting or impairing the validity or enforceability of such provision in any
other jurisdiction.

                  Section 3.06. Entire Agreement. This Agreement is intended by
the parties as a final expression of their agreement and intended to be a
complete and exclusive statement of the agreement and understanding of the
parties hereto in respect of the subject matter contained herein. There are no
restrictions, promises, warranties or undertakings, other than those set forth
or referred to herein with respect to the registration rights granted by the
Company to the Holders.

                                       8
<PAGE>   11

                  Section 3.07. Attorneys' Fees. In any action or proceeding
brought to enforce any provision of this Agreement, the successful party shall
be entitled to recover reasonable attorneys' fees in addition to its costs and
expenses and any other available remedy.

                  Section 3.08. Amendment. This Agreement may be amended only by
means of a written amendment signed by the Company and by the Representative of
the Holders.

                  Section 3.09. Successors and Assigns. This Agreement shall
inure to the benefit of and be binding upon the successors and assigns of each
of the parties, except that the rights of any Holder under this Agreement may
not be assigned to any Person without the written consent of the Company. If the
Company consents to such an assignment, the assignee must agree to be bound by
the terms and conditions of this Agreement.

                                    * * * * *

                                       9
<PAGE>   12

                  IN WITNESS WHEREOF, the parties have executed this Agreement
as of the date first written above.

                                   TOREADOR RESOURCES CORPORATION

                                   By: /s/ G. THOMAS GRAVES III
                                      -----------------------------------------
                                   Name: G. Thomas Graves III
                                        ---------------------------------------
                                   Title: Chief Executive Officer and President
                                         --------------------------------------

                                   and

                                   THE REPRESENTATIVE OF THE HOLDERS

                                   /s/ EARL E. ROSSMAN, JR.
                                   --------------------------------------------
                                   Earl E. Rossman, Jr.
                                   Representative of the Holders

                                       10

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