Document:

<PAGE>   1
                                                                    EXHIBIT 10.3

                                                                  Execution Copy

                         EXECUTIVE EMPLOYMENT AGREEMENT

         This EXECUTIVE EMPLOYMENT AGREEMENT ("AGREEMENT") is made and entered
into to be effective November 6, 1998 ("EFFECTIVE DATE"), by and between SOUTH
TEXAS DRILLING & EXPLORATION, INC. (together with its successors, "COMPANY") and
MICHAEL E. LITTLE ("EXECUTIVE").

                                     RECITAL

         The Company desires to employ Executive, and Executive desires to be
employed by the Company, pursuant to the terms and conditions set forth in this
Agreement.

         NOW, THEREFORE, in consideration of the mutual promises and covenants
set forth in this Agreement, Executive and the Company agree as follows:

1. RESPONSIBILITIES:

         a. Executive and Company acknowledge and agree that Executive shall be
employed as Chief Executive Officer and Chairman of the Board of the Company.
Executive agrees that he will devote his reasonable best efforts and such
portion of his time, attention and skill to the business of the Company as is
necessary to perform his obligations under this Agreement.

         b. Executive acknowledges and agrees that, as Chief Executive Officer
and Chairman of the Board of the Company, he shall be responsible for actively
supervising the overall management of the Company and its subsidiaries, subject
to and in accordance with the authority and direction of the Board of Directors
of the Company ("BOARD OF DIRECTORS").

2. COMPENSATION: During his employment pursuant to this Agreement, the Company
agrees to provide Executive the following compensation:

         a. BASE SALARY: Executive shall be paid an annual salary ("ANNUAL BASE
SALARY") of $40,000 for the first year of the Initial Term (as herein defined)
of Executive's employment with the Company. For the second year of the Initial
Term of Executive's employment, and for each year afterwards, Executive shall be
paid an Annual Base Salary which shall be reasonably determined by Executive and
the Company; provided, however, that for each term after the Initial Term, the
Annual Base Salary shall be no less than $40,000. Such salary shall be subject
to withholding for the prescribed federal income tax, social security and other
items as required by law and for other items consistent with the Company's
policy with respect to health insurance and other benefit plans for similarly
situated employees.

         b. BUSINESS EXPENSES: The Company shall reimburse all reasonable travel
and entertainment expenses incurred by Executive in connection with the
performance of his duties pursuant to this Agreement. Executive shall provide
the Company with a written accounting of his expenses on a form which satisfies
applicable federal income tax reporting or record keeping requirements. The
Company shall also reimburse all reasonable automobile expenses, as per the

                                      -1-

<PAGE>   2

standard policy for executives of the Company, as such policy may be amended
from time to time by the Company.

         c. DISCRETIONARY INCENTIVE BONUS: Executive may from time to time be
awarded a discretionary incentive bonus, as determined by the Board of Directors
of the Company, during the term of his employment under this Agreement. This
bonus shall be based on the financial performance of the Company and shall be
consistent with the incentive bonuses paid to other executives of the Company.

         d. EMPLOYEE BENEFITS: During the term of this Agreement, Executive
shall be entitled to receive and/or participate in such benefits, including
vacation, sick leave, health insurance, life insurance, disability insurance and
retirement benefits as are made available to other executives of the Company.

3. TERM AND TERMINATION: The duration of this Agreement shall be defined and
determined as follows:

         a. INITIAL TERM: This Agreement shall continue in full force and affect
for two (2) years ("INITIAL TERM"), commencing on the Effective Date and
expiring on November 15, 2000, ("EXPIRATION DATE"), unless terminated prior to
the Expiration Date in accordance with this Agreement.

         b. RENEWAL: Upon Expiration Date, this Agreement shall renew
automatically for additional one-year terms unless either party notifies the
other party within thirty (30) days of the end of the Initial Term, or any
additional one-year term, of his or its intent to terminate the Agreement upon
the expiration of the then-current term.

         c. TERMINATION: Upon termination of this Agreement for any reason, the
Company shall pay to Executive any and all Annual Base Salary and accrued
benefits due Executive through the date of termination. This Agreement may be
terminated as follows:

               (1) DEATH: In the event of Executive's death, this Agreement
shall terminate immediately, without notice, on the date of Executive's death;
provided, however, that, in addition to the payment of any and all Annual Base
Salary and accrued benefits due Executive through the date of termination, the
Company shall also pay to Executive's estate the Annual Base Salary that
Executive would have earned for a period of ninety (90) days following the date
of death and a pro rata amount of the discretionary incentive bonus, if any,
paid to Executive for the prior contract year, in the time and manner in which
Executive would have been paid such compensation. In addition, Executive's
designated beneficiaries shall be entitled to receive any life insurance
benefits provided to Executive in accordance with the applicable plan documents
and/or insurance policies governing such benefits.

               (2) DISABILITY: In the event Executive becomes physically or
mentally disabled so that he is unable to perform the essential functions of his
position, with reasonable accommodation, for a period of hundred eighty (180)
consecutive days, this Agreement shall terminate immediately, without notice.

                                      -2-

<PAGE>   3

               (3) WITH GOOD CAUSE:

                    (a) This Agreement may be terminated by the Company
providing thirty (30) days prior written notice to Executive that the Company is
terminating the Agreement with good cause ("WITH GOOD CAUSE") at any time during
his employment. In the event that With Good Cause exists for terminating this
Agreement, the Company may elect to provide Executive with thirty (30) days pay
in lieu of notice, in addition to any other amounts due under this Agreement.

                    (b) For purposes of this Agreement, With Good Cause shall be
defined as follows: (i) conviction of any act or omission constituting fraud
under the law of the State of Texas; (ii) conviction of, or a plea of nolo
contendere to, a felony; (iii) embezzlement or theft of Company property or
funds; or (iv) failure of Executive to follow the instructions of the Board of
Directors as approved by a majority of the Board members at a meeting of the
Board of Directors.

                    (c) In the event the Company believes With Good Cause exists
for terminating this Agreement pursuant to this section, the Company shall be
required to first give Executive written notice of the acts or omissions
constituting With Good Cause, and no notice of termination With Good Cause shall
be communicated by the Company unless and until Executive fails to cure such
acts or omissions (to the extent such acts or omissions can be cured) within
fifteen (15) days after receipt of the notice stating the acts or omissions
constituting With Good Cause.

                    (d) In the event the Company communicates a notice stating
Executive's acts or omissions constituting With Good Cause pursuant to this
section, Executive shall have the right to a hearing before the Board of
Directors, within fifteen (15) days after the date the notice stating
Executive's acts or omissions constituting With Good Cause is received, to
contest the alleged With Good Cause stated in the notice.

               (4) WITHOUT GOOD CAUSE:

                    (a) This Agreement shall terminate by the Company providing
thirty (30) days written notice to Executive that the Company is terminating the
Agreement without good cause ("WITHOUT GOOD CAUSE"), at any time during his
employment; provided, however, that the Company shall be required pay severance
in accordance with the severance provisions in Section 4.

                    (b) Any termination of this Agreement by the company which
is not With Good Cause, or which does not result from the death of Executive, or
the disability of Executive, shall be deemed to be a. termination Without Good
Cause. Furthermore, in the event that the Company communicates a notice of
termination With Good Cause, and a third party finder of fact determine that no
Good Cause exists or existed for the notice of termination With Good Cause to be
communicated by the Company to Executive, then such notice shall be deemed to
have been a communication of a notice of termination Without Good Cause, as
appropriate, for all purposes under this Agreement.

                                      -3-

<PAGE>   4

               (5) RESIGNATION: Executive shall be entitled to terminate this
Agreement by providing the Company with a written notice of resignation at least
thirty (30) days prior to his intended resignation date, subject to the
following provisions:

                    (a) WITH GOOD REASON: Executive shall have the right to
resign with good reason ("WITH GOOD REASON"). With Good Reason shall be defined
as, (i) the Company's failure in any material respect to perform any provision
of this Agreement; (ii) any material changes in the duties and responsibilities
of Executive under this Agreement without the written consent of Executive;
(iii) the hiring or promotion by the Company of another executive employee to a
position of equal or greater responsibility for the management of the Company
without the written consent of Executive; (iv) the Company's directing Executive
to work at a location other than San Antonio, Texas; (v) after a Change of
Control (as defined in EXHIBIT A), any material change which, in the sole but
reasonable discretion of Executive, impacts detrimentally upon Executive's
position within the Company.

                    (b) WITHOUT GOOD REASON: Any resignation by Executive for
any reason other than With Good Reason, as defined above, shall be deemed to be
a resignation without good reason ("WITHOUT GOOD REASON").

4. SEVERANCE: Upon termination by the Company Without Good Cause, or upon a
termination by Executive With Good Reason, the Company shall pay to Executive,
as severance pay ("SEVERANCE PAY"), the greater of (i) $40,000, and (ii) the
total remaining Annual Base Salary due Executive for the entire remaining term
of the Initial Term of the Agreement. By way of example only, if the Company
terminated Executive Without Good Cause on December 16, 1998, the Company would
pay Executive $76,666.67 as Severance Pay. The Severance Pay shall be paid to
Executive in one lump sum, minus any required statutory payroll deductions,
within five (5) days of termination of Executive's employment relationship with
the Company. The Severance Pay specified in this section shall be in addition to
the payment of any and all unpaid Annual Base Salary and accrued benefits due
Executive through the date of termination.

5. STOCK OPTIONS: The Company hereby grants Executive the right to purchase
100,000 shares of common stock of the Company, at a purchase. price of $0.75 per
share. Executive's right to purchase this 100,000 shares of common stock shall
automatically expire on April 1, 1999. Executive shall have the right to
purchase some or all of such 100,000 shares of common stock, in Executive's sole
discretion. The Company shall also grant Executive options pursuant to an
incentive stock option plan maintained by the Company to purchase 650,000 shares
of the Company's common stock ("OPTION STOCK") at $0.75 per share. Executive's
options shall vest at a rate of 20% per year (i.e., 130,000 shares per year) for
each 12-month period Executive is employed by the Company. Upon resignation for
Good Reason by Executive or termination Without Good Cause by the Company, all
of Executive's options shall vest automatically upon the date of termination of
Executive's employment. Upon resignation without Good Reason by Executive or
termination With Cause by the Company, all of Executive's nonvested options
shall terminate automatically upon the date of termination of Executive's
employment. Furthermore, the parties acknowledge that Executive has agreed to
assume the position of Chief Executive Officer and Chairman of the Board and to
enter into this Agreement based upon his confidence in the current shareholders
of the Company and the support of the Board of Directors for the development of
a new strategy for the Company. Accordingly, if the Company should undergo a

                                      -4-

<PAGE>   5

Change of Control, all stock options then held by Executive for the purchase of
equity securities of the Company shall immediately become vested, effective on
the date of the Change of Control. Executive shall have the right to exercise
any option to purchase part of the Option Stock granted to him by Company after
such option has vested in accordance with the vesting provisions set forth in
the option agreement reflecting the grant of options by the Company.

6. SUCCESSORS AND ASSIGNS: The parties acknowledge and agree that this Agreement
may not be assigned by either party without the written consent of the other
party. In the event of a Change of Control, the Company's obligations under this
Agreement shall be assumed by the person or entity that survives such
transaction, or by the person purchasing assets constituting such Change of
Control. In the event of Executive's death, this Agreement shall be enforceable
by Executive's estate, executors or legal representatives, but only to the
extent that such persons may collect any compensation (including through the
exercise of stock options) due to Executive under this Agreement.

7. INDEMNIFICATION: During and after the employment of Executive pursuant to
this Agreement, the Company shall indemnify Executive against all judgments,
penalties, fines, assessments, losses, amounts paid in settlement and reasonable
expenses (including, but not limited to, attorneys' fees) for which Executive
may become liable as a result of his performance of his duties and
responsibilities pursuant to this Agreement, to the fullest extent permissible
under the laws of the State of Texas. This provision shall be in addition to any
other provisions of the Company's Articles of Incorporation, Bylaws or
Indemnification Agreements providing for indemnification to Executive.

8. RULES OF CONSTRUCTION: The following provisions shall govern the
interpretation and enforcement of this Agreement:

         a. SEVERABILITY: The parties acknowledge and agree that each provision
of this Agreement shall be enforceable independently of every other provision.
Furthermore, the parties acknowledge and agree that, in the event any provision
of this Agreement is determined to be unenforceable for any reason, the
remaining covenants and/or provisions will remain effective, binding and
enforceable.

         b. WAIVER. The parties acknowledge and agree that the failure of either
to enforce any provision of this Agreement shall not constitute a waiver of that
particular provision, or of any other provisions, of this Agreement.

         c. CHOICE OF LAW/VENUE: The parties acknowledge and agree that except
as specifically provided otherwise in this Agreement, the law of Texas will
govern the validity, interpretation and effect of this Agreement and any other
dispute relating to, or arising out of, the employment relationship between the
Company and Executive. Proper venue for any litigation or arbitration concerning
this Agreement shall be in San Antonio, Texas.

         d. MODIFICATION: The parties acknowledge and agree that this Agreement
constitutes the complete and entire agreement between the parties; that the
parties have executed this Agreement based upon the express terms and provisions
set forth herein; that the parties have not relied on any representations, oral
or written, which are not set forth in this Agreement; that no previous
agreement, either oral or written, shall have any effect on the terms or
provisions of this

                                      -5-

<PAGE>   6

Agreement; and that all previous agreements, either oral or written, are
expressly superseded and revoked by this Agreement. In addition, the parties
acknowledge and agree that the provisions of this Agreement may not be modified
by any subsequent agreement unless the modifying agreement (i) is in writing
(ii) contains an express provision referencing this Agreement (iii) is signed by
Executive and (iv) is approved by the Board of Directors.

         e. EXECUTION: The parties agree that this Agreement may be executed in
multiple counterparts, each of which shall be deemed an original for all
purposes.

         f. HEADING: The parties agree that the subject headings set forth at
the beginning of each section in this Agreement are provided for ease of
reference only, and shall not be utilized for any purpose in connection with the
construction, interpretation or enforcement of this Agreement.

9. LEGAL CONSULTATION: The parties acknowledge and agree that both parties have
been accorded a reasonable opportunity to review this Agreement with legal
counsel prior to executing the agreement.

10. NOTICES: The parties acknowledge and agree that any and all Notices required
to be delivered under the terms of this Agreement shall be forwarded by personal
delivery or certified U.S. mail. Notices shall be deemed to be communicated and
effective on the day of receipt. Such Notices shall be addressed to each party
as follows:

         MICHAEL E. LITTLE

         -----------------------------

         -----------------------------

         SOUTH TEXAS DRILLING & EXPLORATION, INC.
         9310 Broadway Building I
         San Antonio, Texas 78217

With a copy to:

         J. Rowland Cook, Esq.
         Jenkens & Gilchrist,
         A Professional Corporation
         2200 One American Center
         600 Congress Avenue
         Austin, Texas 78701

Any party hereto may change its or his address for the purpose of receiving
notices and other communications as herein provided by a written notice given in
the manner aforesaid to the other party or parties hereto.

                                      -6-

<PAGE>   7

         EXECUTED on this 31st day of March, 1999, to be effective as of the
16th day of November, 1998.

Dated:  March 31, 1999                      MICHAEL E. LITTLE

                                            /s/ Michael E. Little
                                            -----------------------------------

Dated:  March 31, 1999                      SOUTH TEXAS DRILLING & EXPLORATION,
                                            INC.

                                            /s/ William D. Hibbetts
                                            ------------------------------------

                                            /s/ Rodney R. Lewis
                                            ------------------------------------

                                            /s/ Wm. Stacy Locke
                                            ------------------------------------

                                            /s/ Richard Phillips
                                            ------------------------------------

                                      -7-

<PAGE>   8

                                    EXHIBIT A

                         DEFINITION OF CHANGE OF CONTROL

A Change of Control shall mean:

         (1) a change in the ownership of the capital stock of the Company where
a corporation, person or group acting in concert ("PERSON") as described in
Section 14(d)(2) of the Securities Exchange Act of 1934, as amended ("EXCHANGE
ACT"), holds or acquires, directly or indirectly, beneficial ownership (within
the meaning of Rule 13d-3 promulgated under the Exchange Act) of a number of
shares of capital stock of the Company which constitutes 50% or more of the
combined voting power of the Company's then outstanding capital stock then
entitled to vote generally in the election of directors. If a Person were the
beneficial owner of 50% or more of the combined voting power of the Company's
then outstanding securities as of the Effective Date and such Person thereafter
accumulates more than 5% of additional voting power, a Change of Control of the
Company shall be deemed to have occurred, notwithstanding anything in this
Exhibit to the contrary; or

         (2) the persons who were members of the Board of Directors immediately
prior to a tender offer, exchange offer, contested election or any combination
of the foregoing, cease to constitute a majority of the Board of Directors of
the Company; or

         (3) a dissolution of the Company, or the adoption by the Company of a
plan of liquidation, or the adoption by the Company of a merger, consolidation
or reorganization involving the Company in which the Company is not the
surviving entity, or a sale of all or substantially all of the assets of the
Company (for purposes of this Agreement, a sale of all or substantially all of
the assets of the Company shall be deemed to occur if any Person acquires, or
during the 12-month period ending on the date of the most recent acquisition by
such Person, has acquired, gross assets of the Company that have an aggregate
fair market value equal to 50% or more of the fair market value of all of the
gross assets of the Company immediately prior to such acquisition or
acquisitions); or

         (4) a tender offer or exchange offer is made by any Person which, if
successfully completed, would result in such Person beneficially owning (within
the meaning of Rule l3d-3 promulgated under the Exchange Act) either 50% or more
of the Company's outstanding shares of Common Stock or shares of capital stock
having 50% or more of the combined voting power of the Company's then
outstanding capital stock (other than an offer made by the Company), and
sufficient shares are acquired under the offer to cause such person to own 50%
or more of the voting power; or

         (5) a change in control is reported or is required to be reported by
the Company in response to either Item 6(e) of Schedule 14A of Regulations 14A
promulgated under the Exchange Act or Item 1 of Form 8-K promulgated under the
Exchange Act; or

         (6) during any period of two consecutive years, individuals who, at the
beginning of such period constituted the entire Board of Directors of the
Company, cease for any reason (other than death) to constitute a majority of the
directors, unless the election, or the

<PAGE>   9

nomination for election, by the Company's stockholders, of each new director was
approved by a vote of at least a majority of directors then still in office who
were directors at the beginning of the period.

         A Change of Control shall include any other transactions or series of
related transactions occurring which have substantially the same effect as the
transactions specified in any of the preceding clauses of Section 4(a)(1)-(6).
However, a Change of Control shall not be deemed to occur if a Person becomes
the beneficial owner of the applicable percentage or more (as referenced above)
of the combined voting power of the Company's then outstanding securities solely
by reason of the Company's redemption or repurchase of securities; but further
acquisitions by such Person that cause such Person to be the beneficial owner of
the applicable percentage or more (as referenced above) of the combined voting
power of the Company's then outstanding securities shall be deemed a Change of
Control.

         Notwithstanding any other provision of this definition of "Change of
Control," a Change of Control shall not be deemed to have occurred as a result
of Executive's acceptance of one or more of the signed resignation letters of
the members of the Board of Directors in Executive's possession as of the date
of execution of this Agreement by Executive.<PAGE>   1
                                                                    EXHIBIT 10.4

                               SECOND AMENDMENT TO
                         EXECUTIVE EMPLOYMENT AGREEMENT

         THIS SECOND AMENDMENT TO EXECUTIVE EMPLOYMENT AGREEMENT (the "Second
Amendment"), dated effective as of the 21st day of August, 2000, is by and
between South Texas Drilling & Exploration, Inc., a Texas corporation, with its
principal place of business at 9310 Broadway, Building 1, San Antonio, Bexar
County, Texas (the "Company"), and William Stacy Locke (the "Employee").

         WHEREAS, the Company and the Employee entered into that one certain
Executive Employment Agreement dated effective as of the 25th day of April,
1995, and as amended by that one certain First Amendment to Executive Employment
Agreement dated effective as of the 16th day of November, 1998 (said Executive
Employment Agreement, as amended, herein referred to as the "Employment
Agreement").

         WHEREAS, the Company and the Employee hereby desire to modify and amend
certain terms and provisions of the Employment Agreement and to approve, ratify
and confirm the Employment Agreement, as modified and amended by this Second
Amendment.

         NOW, THEREFORE, in consideration of the premises and mutual agreements
herein set forth, the parties hereto have agreed, and do hereby agree, as
follows:

A. Section 1 of the Employment Agreement is hereby modified and amended as
necessary to provide that:

         1. The Company employs, as of the date of this Second Amendment, and
will employ Employee in the business of the Company as its President and Chief
Financial Officer, and the Employee works, as of the date of this Second
Amendment, and will continue to work for the Company as its President and Chief
Financial Officer, for the period beginning as of August 15, 2000 and ending
April 30, 2003, and thereafter from year to year (renewing automatically upon
expiration of the employment term ending April 30, 2003 and upon expiration of
each one year employment term thereafter), unless and until such employment
shall have been earlier terminated as provided in the Employment Agreement, as
amended by this Second Amendment.

B. Section 3 of the Employment Agreement, as it pertains to annual base salary,
is hereby modified and amended as necessary to provide that:

         1. The Company, as of the date of this Second Amendment, pays and will
continue to pay Employee a minimum base salary of $150,000, effective as of the
21st day of August, 2000 and will continue to pay said minimum base salary
throughout the remainder of the employment term, as herein defined. In addition
to the minimum annual base salary defined herein, Employee shall receive the
same discretionary incentive bonus, which shall include any cash, option and
other incentives, as the Chief Executive Officer and Chief Operating Officer of
the Company.

<PAGE>   2

C. Section 6(b) of the Employment Agreement, as it pertains to severance pay, is
hereby modified and amended as necessary to provide that:

         1. Upon termination of the Employee without cause, as defined in the
Employment Agreement, or upon termination of the Employment Agreement with
reason, as defined in the Employment Agreement as hereby amended, the Company
shall pay to Employee, as severance pay, the greater of (i) $150,000 or (ii) the
annual base salary for the entire remaining term of the Employment Agreement
ending April 30, 2003.

         2. The Company hereby agrees to execute a new employment contract for
Employee in accordance with the terms herein, which is to be approved, ratified,
and executed by the Company no later than the 30th day of September, 2000. The
new employment contract shall set forth the terms herein, and shall include in
it any bonus, option and other compensation incentives afforded to Wayne Squires
and Michael E. Little.

D. Except as modified and amended by this Second Amendment, the Employment
Agreement shall remain in full force and effect as written. References to the
"Employment Agreement" in the Employment Agreement shall mean the Employment
Agreement as herein amended.

         IN WITNESS WHEREOF, the parties hereto have executed this Second
Amendment as of the day and year first above written.

                                       South Texas Drilling & Exploration, Inc.

                                       By:   /s/ Michael E. Little
                                          -------------------------------------
                                       Its:  Chairman CEO
                                           ------------------------------------

                                             /s/ William Stacy Locke
                                       ----------------------------------------
                                       William Stacy Locke

                                       2

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00026-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00026-of-00352.parquet"}]]