EXHIBIT 10.O

                             SNYDER OIL CORPORATION

                     SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN
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                               TABLE OF CONTENTS

ARTICLE I -- DEFINITIONS ...................................................   1
ARTICLE II -- BENEFITS .....................................................   1
ARTICLE III -- ADMINISTRATION ..............................................   2
ARTICLE IV -- CLAIMS PROCEDURES ............................................   3
ARTICLE V -- AMENDMENT AND TERMINATION OF PLAN .............................   4

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                             SNYDER OIL CORPORATION

                     SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN

     This unfunded Supplemental Executive Retirement Plan, effective as of
January 12, 1999, is hereby adopted and established by the Snyder Oil
Corporation (the "Company") and will be maintained by the Company for the
purpose of providing benefits for certain individuals as provided herein.

                                    ARTICLE I
                                   DEFINITIONS

     I.1 "Board" shall mean the Board of Directors of the Company.

     I.2 "Code" shall mean the Internal Revenue code of 1986, as amended from
time to time.

     I.3 "Company" shall mean Snyder Oil Corporation and any of its subsidiaries
or affiliated business entities designated by the Board as participating
entities.

     I.4 "ERISA" shall mean the Employee Retirement Income Security Act of
1974, as from time to time amended.

     I.5 "Normal Retirement Age" shall mean age 55.

     I.6 "Participant" shall mean John Snyder, the current chief executive
officer of the Company and all management or highly-compensated employees of the
Company who have been identified as influential within the Company and selected
to participate in the Plan by the Board of Directors of the Company.

     I.7 "Plan" shall mean the Snyder Oil Corporation Supplemental Executive
Retirement Plan, as from time to time amended or restated.

                                   ARTICLE II
                                    BENEFITS

     II.l Upon the retirement or termination of employment, for any reason, of a
Participant on or after his Normal Retirement Age, he shall be entitled to a
normal retirement benefit paid each month in an amount equal to $21,750. The
normal retirement benefit shall be payable each month beginning with the month
the first day of which coincides with or immediately follows the month of the
Participant's retirement or termination of employment. The normal retirement
benefit shall be paid each month until and including the month of the
Participant's death. If the Participant is survived by a spouse, the spouse
shall be entitled to a monthly benefit calculated in accordance with Section
2.2.

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     II.2 If a Participant dies, his spouse at the time he originally became a
Participant shall be entitled to a monthly benefit equal to $14,507. The spousal
pension benefit shall be payable each month beginning with the month the first
day of which immediately follows the month of the Participant's death. The
spousal pension benefit shall be paid each month until and including the month
of the spouse's death. The spousal pension benefit shall be paid regardless of
whether the Participant's death occurs while he is still employed by the Company
as long as the Participant would be entitled to a monthly benefit pursuant to
2.1 if his termination occurs before his death.

     ll.3 Notwithstanding the foregoing, the Participant or the Participant's
spouse if receiving a spousal retirement benefit, may request at any time on or
after the Participant's termination of employment, if the Company so agrees in
its sole and absolute discretion, that the actuarial present value of any
benefits expected to be paid including spousal retirement benefits under this
Plan, as determined in accordance with the appropriate actuarial factors and
interest rates in effect at the beginning of the calendar year for an immediate
annuity upon a plan termination under Pension Benefit Guaranty Corporation
requirements, be immediately paid to the Participant or the surviving spouse if
such spouse is currently collecting a spousal retirement benefit, in a lump sum
in cash.

                                   ARTICLE III
                                 ADMINISTRATION

     III.l The right of a Participant or the Participant's spouse to receive a
distribution hereunder shall be an unsecured claim against the general assets of
the Company. The Plan at all times shall be considered entirely unfunded both
for tax purposes and for purposes of Title I of ERISA. Any funds invested
hereunder shall continue for all purposes to be part of the general assets of
the Company and available to its general creditors in the event of bankruptcy or
insolvency. Notwithstanding the foregoing, a rabbi trust or rabbi trusts shall
be established, substantially in the form attached hereto, in connection with
the Plan in order to hold amounts contributed thereto. Any benefits which may be
payable pursuant to this Plan are not subject in any manner to anticipation,
sale, alienation, transfer, assignment, pledge, encumbrance, attachment, or
garnishment by creditors of a Participant or a Participant's spouse. The Plan
constitutes a mere promise by the Company to make benefit payments in the
future. No interest or right to receive a benefit may be taken, either
voluntarily or involuntarily, for the satisfaction of the debts of, or other
obligations or claims against, such person or entity, including claims for
alimony, support, separate maintenance and claims in bankruptcy proceedings.

     III.2 The Plan shall be administered by the Board, which shall have the
authority, duty and power to interpret and construe the provisions of the Plan
as the Board deems appropriate including the authority to determine eligibility
for benefits under the Plan. The Board shall have the duty and responsibility of
maintaining records, making the requisite calculations and disbursing the
payments hereunder. The interpretations, determinations, regulations and
calculations of the Board shall be final and binding on all persons and parties
concerned.

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     III.3 The Board shall be titled to rely on all tables, valuations,
certificates, opinions, data and reports furnished by an actual , accountant,
controller, counsel or other person employed or retained by the Company with
respect to the Plan.

     III.4 The Board shall furnish individual annual statements of accrued
benefits to each Participant, or Participant's spouse, in such form as
determined by the Board or as required by law.

     III.5 The sole rights of a Participant or a Participant's spouse under this
Plan shall be to have this Plan administered according to its provisions and to
receive whatever benefits he or she may be entitled to hereunder. Further, the
adoption and maintenance of this Plan shall not be construed as creating any
contract of employment between the Company and any Participant. The Plan shall
not affect the right of the Company to deal with any Participants in employment
respects, including their hiring, discharge, compensation, and conditions of
employment.

     III.6 The Company may from time to time establish rules and procedures
which it determines to be necessary for the proper administration of the Plan.

     III.7 The Company shall require any successor, whether direct or indirect,
by purchase, merger, consolidation or otherwise, to all or substantially all of
the business or assets of the Company, expressly to assume an agree to pay the
benefits accrued under this Plan as of the date of such succession in the same
manner and to the same extent as the Company would have been required if no such
succession had taken place. In any event, however, the provisions of this Plan
shall be binding upon the corporation or other entity resulting from such
purchase, merger, consolidation or other transaction and this Section 3.7 shall
apply to the successor in the event of any subsequent purchase, merger,
consolidation or other transaction. The Plan may not be amended to eliminate or
alter the requirements of this Section 3.7.

     III.8 Each Participant or Participant's spouse, as the case may be, shall
keep the Company informed of his or her current address.

     III.9 All questions pertaining to the construction, validity and effect of
the Plan shall be determined in accordance with the laws of the State of Texas
to the extent not preempted by federal law.

     III.10 The Company shall pay all benefits arising under this Plan and all
costs, charges and expenses relating thereto.

                                   ARTICLE IV
                                CLAIMS PROCEDURES

     IV.1 For purposes of handling claims with respect to this Plan, the "Claims
Reviewer" shall be the Company, unless another person or organizational unit is
designated by the Company as Claims Reviewer.

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     IV.2 An initial claim for benefits under the Plan must be made by the
Participant or the Participant's spouse, as the case may be. Not later than 7
days after receipt of such a claim, the Claims Reviewer will render a written
decision on the claim to the claimant, unless special circumstances require the
extension of such 7-day period. If such extension is necessary, the Claims
Reviewer shall provide the Participant or the Participant's spouse with written
notification of such extension before the expiration of the initial 7-day
period. Such notice shall specify the reason or reasons for such extension and
the date by which a final decision can be expected. In no event shall such
extension exceed a period of 7 days from the end of the initial 7-day period.
In the event the Claims Reviewer denies the claim of a Participant or the
Participant's spouse in whole or in part, the Claims Reviewer's written
notification shall specify, in a manner calculated to be understood by the
claimant, the reason for denial; a reference to the Plan or other document or
form that is the basis for the denial; a description of any additional material
or information necessary for the claimant to perfect the claim; an explanation
as to why such information or material is necessary; and an explanation of the
applicable claims procedure. Should the claim be denied in whole or in part and
should the claimant be dissatisfied with the Claims Reviewer's disposition of
the claimant's claim, the claimant may have a full and fair review of the claim
by the Company upon written request therefor submitted by the claimant or the
claimant's duly authorized representative and received by the Company within 60
days after the claimant receives written notification that the claimant's claim
has been denied. In connection with such review, the claimant or the claimant's
duly authorized representative shall be entitled to review pertinent documents
and submit the claimant's views as to the issues, in writing. The Company shall
act to deny or accept the claim within 7 days after receipt of the claimant's
written request for review unless special circumstances require the extension of
such 7-day period. If such extension is necessary, the Company shall provide
the claimant with written notification of such extension before the expiration
of such initial 7-day period. In all events, the Company shall act to deny or
accept the claim within 14 days of the receipt of the claimant's written request
for review. The action of the Company shall be in the form of a written notice
to the claimant and its contents shall include all of the requirements for
action on the original claim. In no event may a claimant commence legal action
for benefits the claimant believes are due the claimant until the claimant has
exhausted all of the remedies and procedures afforded the claimant by this
Article IV.

                                    ARTICLE V
                        AMENDMENT AND TERMINATION OF PLAN

     The Company reserves the right to amend or terminate the Plan subject to
the requirements of Section 3.7 and notification of each Participant and each
Participant's spouse receiving benefits pursuant to the Plan. Notification will
be by first class mail, addressed to each Participant or Participant's spouse at
his or her last known address, or by other notice acknowledged in writing by the
participant. Any amounts the Participant or the Participant's spouse would be
entitled to if the Participant's employment terminated as of the effective date
of such amendment or termination shall remain subject to the provisions of the
Plan and distribution will not be accelerated because of the termination of the
Plan. No amendment or termination shall directly or indirectly reduce or
eliminate a Participant's and/or Participant's spouse's right to a benefit the
Participant and/or the Participant's

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spouse would be entitled to if the Participant's employment terminated as of the
effective date of such amendment or termination.

IN WITNESS WHEREOF, the Company, acting by and through its officers hereunto
duly authorized has executed this instrument, this 30th day of April, 1999, but
to be effective as set forth above.

                                                        SNYDER OIL CORPORATION
                                                        By: JOHN H. KARNES
                                                        Name: John H. Karnes
                                                        Title: Vice President

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