Document:

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                                                                   Exhibit 10.20

          TRUST AGREEMENT (this "Trust Agreement") made this 1st day of
February, 2000, by and between Cabot Oil & Gas Corporation, a Delaware
corporation (the "Company" or "Grantor"), and HARRIS TRUST AND SAVINGS BANK, an
Illinois banking corporation (the "Trustee").

                             W I T N E S S E T H:
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          WHEREAS, the Company has adopted the nonqualified deferred
compensation plan listed in Appendix A (the "Plan");

          WHEREAS, the Company has incurred or expects to incur liability under
the terms of the Plan with respect to the Participants;

          WHEREAS, the Company desires to establish a trust (hereinafter called
the "Trust") and, in its discretion, to contribute to the Trust assets that
shall be held therein, subject to the claims of the Company's creditors in the
event the Company is Insolvent, to provide an alternative source of funds to
assist the Company in meeting its liabilities under the Plan;

          WHEREAS, the Company desires to direct the investment of the Trust
assets; and

          WHEREAS, Harris Trust and Savings Bank is willing to act as Trustee of
the Trust upon all of the terms and conditions hereinafter set forth.

          NOW, THEREFORE, the Company and the Trustee declare and agree that the
Trustee will receive, hold and administer all sums of money and such other
property acceptable to the Trustee as shall from time to time be contributed,
paid or delivered to it hereunder, IN TRUST, upon all of the following terms and
conditions:

          1.   Establishment of Trust.

               (a)  The Company hereby establishes with the Trustee a Trust
consisting of deposits of cash or other property acceptable to the Trustee,
which shall become the principal of the Trust, to be held, administered and
disposed of by the Trustee as provided in this Trust Agreement. All such cash
and other property, all investments and reinvestments made therewith and the
income and proceeds thereof, less the payments or other distributions which, at
the time of reference, shall have been made by the Trustee, are referred to
herein as the "Trust" or "Fund".

               (b)  The Trust hereby established shall be irrevocable.

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               (c)  The Trust is intended to be a grantor trust within the
meaning of subpart E, part I, subchapter J, chapter 1, subtitle A of the Code of
which the Company is the grantor. The Company acknowledges that determination of
the status of the Trust as a grantor trust has been made by the Company and
Harris Trust and Savings Bank assumes no responsibility in this regard. The
Company represents and covenants to the Trustee that at all times during the
continuation of the Trust: the Trust shall constitute an unfunded arrangement
and the establishment of this Trust shall not affect the status of any Plan as
an unfunded plan maintained for the purpose of providing deferred compensation
for a select group of management or highly compensated employees and/or as an
excess benefit plan for purposes of Title I of ERISA; if any interests in the
Plan are deemed to be "securities," within the meaning of the Securities Act,
each offering by the Company of any such interests either has been or will be
registered under the Securities Act or falls or will fall within an available
exemption from the registration requirements of such Act, and complies or will
comply with any applicable state securities laws; and the Trust is not required
to register as an investment company under the Investment Company Act of 1940,
as amended.

               (d)  Unless and until withdrawn from trust as provided herein,
the principal of the Trust, and any earnings thereon, shall be held separate and
apart from other funds of the Company (or any other grantor trust established by
the Company) and shall be used exclusively for the uses and purposes of
Participants and general creditors of the Company as herein set forth.
Participants shall have no preferred claim on, or any beneficial ownership
interest in, any assets of the Trust. Any rights created under a Plan and this
Trust Agreement shall be unsecured contractual rights of Participants against
the Company, and, subject to the other terms and conditions of this Trust
Agreement, to the extent that the Company fails to pay a Participant benefits to
which such Participant is entitled under a Plan, such Participant shall be
entitled to receive such deficiency from the available assets of the Trust, but
not in excess of the amount required by the Payment Schedule to be paid to such
Participant. Any claim of a Participant to receive benefits under a Plan in
addition to the payments set forth in the Payment Schedule for such Participant
shall be solely against the Company and not against the Trust or the Trustee.
Any assets held by the Trust will be subject to the claims of the general
creditors of the Company under Federal and state law in the event the Company
becomes Insolvent.

               (e)  The Trustee shall be responsible only for contributions
actually received by it. The amount and timing of each or any contribution shall
be determined in the sole discretion of the Company. The Company may undertake
under the terms of a Plan or a related agreement to which the Trustee is not a
party to make contributions at specific intervals or on the occurrence of a
specific event. If the Company fails to make any such contribution, in whole or
in part, the Company shall be responsible for notifying affected Participants.
The Trustee shall have no obligation to police the Company's compliance
therewith or to notify Participants thereof. The Trustee shall have no duty or
responsibility to any Person to bring any proceeding or take any other action to
compel any contributions by the Company, except to add such contributions to the
Trust for the account of the designated Plans if and when received by the
Trustee.

               (f)  The Trustee shall maintain a separate account, and such sub-
accounts as the Company shall deem advisable to reflect the Equitable Share of
the Plan, or part thereof, in the

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Trust. The Company shall advise the Trustee of the Equitable Shares at the time
of each contribution to or distribution from the Trust.

          2.   Payments to Participants.

               (a)  The Company shall be solely responsible for keeping, and
providing to the Recordkeeper, accurate books and records with respect to the
employees of the Company, their compensation and their beneficiaries' rights and
interests in the Trust pursuant to the Plan. As soon as practicable after the
establishment of this Trust and the addition of any nonqualified deferred
compensation plan to Appendix A, or the amendment of any Plan, the Company shall
provide the Recordkeeper with certified copies of such Plans and/or amendments,
and all related documents. The Trustee shall not be required to maintain any
separate records or accounts with respect to any Participant, and any records or
accounts required to be maintained pursuant to the terms of any Plan shall be
the responsibility of the Company or Recordkeeper.

               (b)  As soon as practicable after the establishment of this
Trust, the Company shall deliver a Payment Schedule to the Trustee. The Company
shall regularly revise or update the Payment Schedule, as required. Except as
otherwise provided in Section 3, upon receipt from the Company of such Payment
Schedule, which shall include the amount of Federal, state and local tax
required to be withheld, the Trustee shall make payments at the times and in the
manner and form specified in such Payment Schedule to Participants and to the
Company with respect to any taxes withheld from such payments in accordance with
the Company's instructions, all to the extent funds are available in the Trust
with respect to the applicable Plan. The Trustee shall not make any payments to
Participants from the Trust other than as required by the Payment Schedule.

               (c)  The Company may make payment of benefits directly to
Participants as they become due under the terms of the Plan. In such event, the
Company shall also provide for the reporting and withholding of any Federal,
state or local taxes that may be required to be withheld with respect to such
benefit payments. The Company shall notify the Trustee of its decision to pay
such benefits directly prior to the time amounts are payable to Participants,
and any such notice received by the Trustee shall constitute an amendment of the
affected Payment Schedule.

               (d)  If the principal of the Trust, and any earnings thereon,
allocated to a Plan are not sufficient to make payments of all benefits then
payable as of a payment date in accordance with the Payment Schedule, the
Trustee shall notify the Company of the deficiency and the Company shall
determine the specific amounts to be paid to each payee and provide such to the
Trustee in writing.

               (e)  The Company shall have sole responsibility for the payment
of all withholding taxes to, and the filing of all required tax returns with,
the appropriate taxing authority and shall furnish each Participant with the
appropriate tax information form evidencing such payment and the amount thereof.
The Company shall provide the Trustee with a schedule of all benefits that have
been paid by the Company directly to Participants and a schedule of all tax

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withholding payments made by it to the taxing authorities within fifteen (15)
days after the end of the month in which such payments have been made.

               (f)  The entitlement of a Participant to benefits under the Plan
shall be determined by the Company and any claim for such benefits shall be
considered and reviewed by the Company or its designee under the procedures set
forth in the applicable Plan. The Trustee shall have no responsibility with
regard to administration of the Plan. Without limiting the generality of the
foregoing, the Trustee shall have no responsibility should the Trust, or any
Plan's interest in the Trust, have insufficient assets from which to make any
distribution called for under any Payment Schedule or Plan, the Trustee shall
have no responsibility to interpret the provisions of the Plan, and the Trustee
shall have no responsibility for determining whether any Participant has become
entitled to any distribution under any Plan, or the amount thereof, and the
Trustee shall be entitled to rely solely upon the accuracy, timeliness and
completeness of the latest Payment Schedule delivered to it by the Company.

               (g)  The Trustee shall notify the Company periodically of any
returned or undeliverable payments to Participants. Any payments remaining
unclaimed for [six (6)] months after such notice has been given to the Company
shall be returned to Trust and allocated to the account of the Plan originally
debited.

          3.   Trustee Responsibility Regarding Payments to Trust Beneficiary
When Company is Insolvent.

               (a)  At all times during the continuance of this Trust, as
provided in Section 1 (d) hereof, the principal and income of the Trust shall be
subject to claims of general creditors of the Company under Federal and state
law.

               (b)  The Trustee shall cease payment of benefits to Participants
if the Company is Insolvent, as set forth below.

               (1)  The Board of Directors and the Chief Executive Officer of
          the Company shall have the duty to inform the Trustee in writing if
          the Company is Insolvent. If a person claiming to be a creditor of the
          Company alleges in writing to the Trustee, or the Trustee has actual
          knowledge, or the Trustee otherwise receives, in accordance with
          paragraph (f) of Section 15, written notification, that the Company
          has become or may be Insolvent, the Trustee shall determine whether
          the Company is Insolvent for purposes of this Trust Agreement by
          requesting confirmation that the Company is not Insolvent (a "Section
          3(b)(1) Confirmation") from the Board of Directors, acting through its
          Chairman, and the Chief Executive Officer of the Company. The Trustee
          shall, without further inquiry of any Person, conclusively rely on
          such confirmation for all purposes of this Trust Agreement, and,
          pending such determination, the Trustee shall discontinue payment of
          benefits to Participants.

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               (2)  Unless the Trustee, acting through the Trustee's officer to
          whom notices hereunder are to be directed as provided in Section
          15(f), has actual knowledge that the Company is or may be Insolvent,
          or has received written notification, in accordance with paragraph (f)
          of Section 15, from the Company or a Person claiming to be a creditor
          of the Company alleging that the Company is Insolvent, the Trustee
          shall have no duty to the Company or the Company's creditors to
          inquire whether the Company is Insolvent.

               (3)  If the Trustee does not receive a Section 3(b)(1)
          Confirmation, the Trustee shall discontinue payments to Participants
          and shall hold the assets of the Trust for the benefit of the
          Company's general creditors until the Trustee either receives a court
          order directing the disposition of the Trust, or the Chairman of the
          Board of Directors and the Chief Executive Officer of the Company
          deliver a written notice to the Trustee confirming that the Company is
          no longer Insolvent (a "Section 3(b)(3) Confirmation"); provided,
          however, in no event shall the provisions of Sections 10 and 11
          providing for the payment of the Trust's expenses and taxes be
          suspended.

               (4)  Nothing in this Trust Agreement is intended to and shall not
          in any way diminish any rights of Participants to pursue their rights
          as general creditors of the Company with respect to benefits due under
          the Plan or otherwise.

               (5)  The Trustee shall resume the payment of benefits to
          Participants in accordance with Section 2 only after the Trustee has
          received a Section 3(b)(1) or a Section 3(b)(3) Confirmation.

               (c)  Provided that there are sufficient assets, if the Trustee
discontinues the payment of benefits from the Trust and subsequently resumes
such payments pursuant to Section 3(b), the first payment following such
discontinuance shall include the aggregate amount of all payments due to
Participants under the terms of the Plan for the period of such discontinuance,
less the aggregate amount of any payments certified by the Company to the
Trustee to have been made to such Participants by the Company in lieu of the
payments provided for hereunder during any such period of discontinuance.

          4.   Payments to Company.

          Except as provided in Sections 3, 10 and 11, the Company shall have no
right or power to direct the Trustee to return to the Company or to divert to
others, any of the Trust assets before all payment of benefits have been made to
Participants pursuant to the terms of the Plan, as certified to the Trustee by
the Company in writing, and all obligations owed to the Trustee under Section
10, and all taxes under Section 11, have been fully satisfied or otherwise
provided for.  If the Plan terminates prior to the termination of this Trust,
any excess assets after the satisfaction of all liabilities thereunder and
hereunder, shall be allocated as directed by the Company.

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          5.   Investment Authority.

               (a)  Discretionary authority for the management and control of
the assets of the Trust may be retained, allocated or delegated, as the case may
be, for one or more purposes, to and among the Asset Managers by the Company in
its absolute discretion. The terms and conditions of appointment, authority and
retention of any Asset Manager shall be the sole responsibility of the Company.
Any investment policy, and any related guidelines, established by the Company
from time to time, shall be communicated to the affected Asset Manager and
monitored by the Company. The assets of the Trust shall be invested and
reinvested, without distinction between principal and income, at such time or
times in such investments pursuant to such investment strategies or courses of
action and in such shares and proportions, as each Asset Manager, in its sole
discretion, shall deem advisable, subject to such policies and guidelines, if
any. The initial Asset Manager shall be the Company and all of the assets of the
Trust shall be under its exclusive control and management until further written
direction to the Trustee.

               (b)  The Company shall promptly notify the Trustee in writing of
the appointment or removal of an Asset Manager and shall specify the portion of
the Trust to be managed by such Asset Manager. Each Asset Manager shall have
sole and complete investment responsibility for the assets of the Trust that are
subject to its discretionary authority or control and the Trustee shall receive,
hold and transfer assets purchased or sold by the Asset Manager in accordance
with the directions of such Asset Manager. The Trustee shall be under no duty or
obligation to review or to question any direction of any Asset Manager, or to
review the securities or any other property held in any Directed Fund with
respect to prudence, proper diversification or compliance with any limitation on
an Asset Manager's authority under this Trust Agreement or the terms of a Plan,
any investment policies and guidelines, or any agreement entered into between
the Company and the Asset Manager or imposed by applicable law, or to make any
suggestions or recommendations to any Asset Manager or the Company with respect
to the retention or investment of any Directed Fund. The Trustee shall have no
authority to take any action or to refrain from taking any action with respect
to any asset of a Directed Fund unless and until it is directed to do so by the
Asset Manager of such Directed Fund or the Company.

               (c)  The Trustee will have no responsibility for any asset
allocated to a Directed Fund upon the resignation or removal of an Asset Manager
unless and until the Trustee has been notified in writing by the Company that
the Asset Manager's authority will be terminated or relinquished, and the
Trustee has agreed in writing to become an Asset Manager or that such assets are
to be integrated with a Discretionary Fund, as the case may be. In no event
shall the Trustee be liable for any losses to the Trust resulting from the
disposition of any investment made for a Directed Fund or for the retention of
any illiquid or unmarketable investment or for the holding of any other asset
acquired therefor if the Trustee is unable to dispose of such investment because
of any securities laws restrictions or if an orderly liquidation of such
investment is difficult under prevailing conditions, or for failure to comply
with any investment or diversification limitations imposed by the Company, or
for any other violation of the terms of this Trust Agreement, any Plan or
applicable law or laws, as a result of the addition of such assets to the
Discretionary Fund.

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               (d)  No person dealing with the Trustee or an Asset Manager
hereunder shall be under any obligation to see to the proper application of any
money paid or property delivered to the Trustee or the Asset Manager, or to
inquire into the authority of the Trustee or the Asset Manager as to any
transaction, or the validity, expediency or propriety thereof.

          6.   Powers of the Asset Managers.

               (a)  Without in any way limiting the powers and discretions
conferred upon the Asset Managers by the other provisions of this Trust
Agreement or by law, each Asset Manager shall be vested with the following
powers and discretions, and, upon the directions of the Asset Manager, the
Trustee shall make, execute, acknowledge and deliver any and all documents of
transfer and conveyance and any and all other instruments that may be necessary
or appropriate to enable-such Asset Manager to carry out such powers and
discretions:

               (1)  to invest and reinvest in any property, real, personal or
          mixed, wherever situated and whether or not productive of income or
          consisting of wasting assets, including, without limitation, common
          and preferred stocks, bonds, notes, debentures (including convertible
          stocks and securities but not including any stock or other security
          (or right to acquire such stock or other security) of the Company
          (other than a de minimis amount held in commingled investment vehicles
          in which an Asset Manager invests)), leaseholds, mortgages,
          certificates of deposit or demand or time deposits (including any such
          deposits with the Trustee), securities of investment companies,
          registered or unregistered (notwithstanding that the Asset Manager, or
          Trustee, or an affiliate of the Asset Manager, acts as investment
          adviser, custodian, transfer agent, registrar, sponsor, distributor or
          manager or provides, for compensation, other services to the
          investment company, including specifically the Harris Insight Funds
          from which the Trustee receives an investment advisory fee, all or a
          part of which is paid to Trustee's affiliate Harris Investment
          Management, Inc. for its portfolio management service provided to
          Harris Insight Funds), interests in partnerships and trusts, insurance
          contracts, and oil, mineral or gas properties, royalties, interests or
          rights, without being limited to the classes of property in which
          trustees are authorized to invest by any applicable law or any rule or
          court of any state and without regard to the proportion any such
          property may bear to the entire amount of the Trust assets;

               (2)  to retain any property at any time received by the Trust;

               (3)  to purchase, sell, exchange, convey, transfer or otherwise
          dispose of any property by private contract or at public auction;

               (4)  to grant and exercise options for the purchase or exchange
          of property held by it;

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               (5)  to enter into contracts or to make commitments, either alone
          or in company with others, to sell or acquire property;

               (6)  to purchase, sell, write or issue puts, calls or other
          options, covered or uncovered, to enter into financial futures
          contracts, forward placement contracts, standby contracts and similar
          arrangements commonly referred to as "derivatives", and in connection
          therewith, to deposit, hold (or direct the Trustee to deposit or hold)
          or pledge assets of the Trust;

               (7)  to exercise all voting or other rights (but subject to the
          suspension of any voting rights as a result of any broker loan or
          similar agreement); to give general or special proxies or powers of
          attorney with or without power of substitution; to exercise any
          conversion privileges, subscription rights or other options and to
          make any payments incidental thereto; to participate in any plan of
          reorganization, consolidation, merger, combination, liquidation or
          other similar plan relating to property that is subject to its
          management and control and to consent to or oppose any such plan or
          any action thereunder or any contract, lease, mortgage, purchase, sale
          or other action by any person, and to delegate discretionary powers
          and to pay any assessments or charges in connection therewith;

               (8)  to manage, administer, operate, insure, repair, improve,
          develop, preserve, mortgage, lease or otherwise deal with, for any
          period, any real property or any oil, mineral or gas properties,
          royalties, interest, or rights directly or through any corporation,
          either alone or by joining with others, using Trust assets for any
          such purposes, to modify, extend, renew, waive or otherwise adjust any
          provision of any such mortgage or lease and to make provision for
          amortization of the investment in or depreciation of the value of such
          property; and

               (9)  to acquire the remaining undivided interest of any Affiliate
          Trust created by an Affiliate pursuant to Section 18 without notice to
          or consent of any other Person.

               (b)  In addition, the Trustee is hereby authorized:

               (1)  to register any securities held in the Trust or to take
          title to any property in its own name or in the name of a nominee or
          nominees, with or without the addition of words indicating that such
          securities or other property are held as trustee, and to hold any
          securities in bearer form, and to combine certificates representing
          such securities with certificates of the same issue held by the
          Trustee in other representative capacities or as agent for customers,
          or to deposit or to arrange for the deposit of such securities in any
          qualified central depository, domestic or foreign, even though, when
          so deposited, such securities may be merged and held in bulk in the
          name of the nominee of such depository with other securities deposited
          therein by other depositors, or to deposit or arrange for the deposit
          of any securities

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          issued by the United States Government, or any agency or
          instrumentality thereof, with a Federal Reserve Bank, but the books
          and records of the Trustee shall at all times show that all such
          investments are part of the Trust;

               (2)  to employ on behalf of the Trust suitable agents,
          accountants, actuaries, investment advisers, financial or employee
          benefits consultants, sub-custodians and depositories, domestic or
          foreign, counsel, who may be counsel to the Company or the Trustee,
          and others, to assist it in determining or performing its duties or
          obligations hereunder, and to pay their reasonable expenses and
          compensation from the Trust to the extent not paid by the Company, and
          to confer upon any depository or sub-custodian the powers conferred
          upon the Trustee by subparagraph (1) of this Section 6(b) as well as
          the power to appoint subagents and sub-depositories, wherever
          situated, in connection with the retention of securities or other
          property;

               (3)  to extend the time of payment of any obligation held by it;

               (4)  subject to Section 9(b) and with the consent of the Company:
          to compromise, compound, submit to arbitration or settle any claims,
          debts, damages or obligations due or owing to or from, or otherwise
          adjust all claims in favor of or against, the Trust, except that the
          consent of the Company shall not be required in connection with any
          claim with respect to which the Trustee is not entitled to be
          reimbursed or indemnified for liabilities, damages and expenses under
          this Agreement; to commence or defend suits or legal proceedings to
          protect any interest of the Trust; and to represent the Trust in all
          suits or legal proceedings in any court or before any other body or
          tribunal;

               (5)  to organize under the laws of any state a corporation or
          trust for the purpose of acquiring and holding title to any property
          which it is authorized or directed to acquire hereunder and to
          exercise, or permit the Asset Manager with respect thereto, to
          exercise any or all of the powers set forth herein;

               (6)  to hold uninvested any monies received by it, without
          incurring any liability for the payment of interest thereon, until
          such monies shall be invested or disbursed; and

               (7)  to be reimbursed for the expenses incurred in exercising any
          of the foregoing powers or to pay the reasonable expenses incurred by
          any agent, manager or trustee appointed pursuant hereto.

               (c)  All rights associated with the assets of the Trust shall be
exercised by the Company, the Trustee, or an Asset Manager, as hereinabove
provided, and shall in no event be exercisable by, or rest with, Participants.

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               (d)  The Company reserves the right to transfer to the Trust
paid-up life insurance contracts (each a "PLIC") on or for the life of any
Participant or to direct, in writing, the Trustee to purchase a PLIC on or for
the life of any such Participant out of amounts held in the Trust with respect
to one or more Plans. A PLIC shall be an asset of the Trust subject to the
claims of the Company's creditors in the event the Company is Insolvent. The
proceeds of any PLIC shall, upon the death of the insured Participant or
otherwise, upon receipt by the Trustee, be credited to the Equitable Share of
the applicable Plan. The Trustee shall have no power to name a beneficiary of
the PLIC other than the Trust, to consent to the assignment of the PLIC (as
distinct from conversion of the PLIC to a different form upon the written
direction of the Company) other than to a successor trustee hereunder, or to
loan to any Person (other than the Company) the proceeds of any borrowing
against such PLIC. Except as provided in this paragraph (d), the Trustee's sole
responsibility with respect to any insurance contract, including a PLIC, to be
held under the Trust or purchased with Trust assets shall be as directed owner
and custodian thereof and the Company shall be solely responsible for
determining the issuer and the terms of any such insurance contract and
monitoring the terms of the insurance contract and the issuer thereof to
determine and protect the Trust's rights and to instruct the Trustee in the
exercise of those rights.

               (e)  When the Trustee delivers property against payment, delivery
of the property and receipt of payment may not be simultaneous. In such case,
the risk of non-receipt of payment shall be the Trust's, and the Trustee shall
have no liability therefor. All credits to the Trust of the anticipated proceeds
of sales and redemption of property arid of anticipated income from property
shall be conditional upon receipt by the Trustee of final payment and may be
reversed to the extent final payment is not received. At the discretion of the
Trustee, the Trust may make use of such conditional credits. To the extent such
credits do not become unconditional by receipt of final payment, the Trust shall
reimburse the Trustee upon demand for the amount of such conditional credits.
When the Trustee is to receive property, it is authorized to accept documents in
lieu of such property as long as such documents contain the agreement of the
issuer thereof to hold such property subject to the Trustee's sole order. The
Trustee may, in its discretion, advance funds to the Trust to facilitate the
settlement of any trade. In the event of such an advance, the Trust shall
immediately reimburse the Trustee for the amount thereof.

          7.   Disposition of Income.

          During the term of this Trust, all income received by the Trust, net
of expenses charged to income and taxes, shall be added to principal and
reinvested.

          8.   Accounting by Trustee.

               (a)  The Trustee shall maintain records of all investments,
receipts, and disbursements under this Trust Agreement, and all accounts, books
and records relating thereto shall be open to inspection and audit at all
reasonable times during normal business hours by any Person designated by the
Company.

               (b)  Within a reasonable time after the close of each calendar
year (or such shorter period as to which the Company and Trustee may agree), or
of any termination of the duties

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of the Trustee hereunder, the Trustee shall deliver to the Company a written
statement of transactions reflecting its acts and transactions as trustee
hereunder during such calendar year (or such shorter period), or during such
period from the close of the last calendar year or last statement period to the
termination of the Trustee's duties, respectively, including a statement of the
then current value of the Trust. Any such statement shall be deemed an account
stated and accepted and approved by the Company, and the Trustee shall be
relieved and discharged to all Persons with respect to all matters and things
contained in such statement as though such account had been settled and allowed
by a judgment or decree of a court of competent jurisdiction in an action or
proceeding to which the Company and all Persons having any beneficial interest
in the Trust were parties, unless the Company shall have filed with the Trustee
specific written exceptions or objections to any such statement within ninety
(90) days of receipt thereof by the Company.

               (c)  The Trustee will determine the value of the Trust as of each
reporting date under Section 8.  Except in the case of an investment in which
amortized cost is the valuation method designated, assets will be valued at
their market values at the close of business on such date, or, in the absence of
readily ascertainable market values, at such values as the Trustee determines in
accordance with methods consistently followed and uniformly applied or obtained
as provided below.  The Company acknowledges and agrees that in the normal
course of valuing assets, the Trustee may rely on pricing information provided
by recognized pricing services which the Trustee deems to be reliable or
provided by the Asset Manager or dealers or sponsors of pooled investment
vehicles ("dealers"), and that the Trustee does not verify, warrant or represent
the accuracy or completeness of such information, and shall not be liable for
any diminution or inflation in the value of any assets as a result of any
inaccurate or incomplete information furnished or transmitted by such pricing
services or the Asset Managers or dealers.  The Trustee may rely for all
purposes of this Trust Agreement on the latest valuation information submitted
to it even if such information predates the purported valuation date.  The
Company will provide or cause the Asset Managers to provide the Trustee with all
information needed by the Trustee to value such assets and to report and account
under this Trust Agreement.

               (d)  The Trustee shall have the right, at the expense of the
Trust, to apply at any time to a court of competent jurisdiction for judicial
settlement of any account of the Trustee not previously settled as herein
provided or for the determination of any question of construction or for
instructions. In any such action or proceeding it shall be necessary to join as
parties only the Trustee and the Company (although the Trustee may also join
such other Persons as it may deem appropriate), and judgment or decree entered
therein shall be conclusive.

          9.   Indemnification; Liabilities of the Trustee.

               (a)  (1) The Trustee shall be indemnified and held harmless by
          the Company from and against any claim, liability, loss, damage or
          expenses (including, but not limited to, reasonable attorneys' fees
          and expenses incurred in preparing, investigating or defending any
          claim) that may be asserted against the Trustee arising out of any
          action taken or omitted by the Trustee pursuant to this Trust
          Agreement, except due to the Trustee's own negligence or willful
          misconduct. Any loss, damage

                                      -11-
<PAGE>

          or expense that is not paid by the Company under this Section or
          Section 10 shall be paid from the assets of the Trust and, until so
          paid, shall constitute a charge on the Trust and a lien against the
          assets of the Trust in favor of the Trustee.

               (2)  The Company shall be indemnified and held harmless by the
          Trustee from and against any claim, liability, loss, damage or
          expenses (including, but not limited to, reasonable attorneys' fees
          and expenses incurred in preparing, investigating or defending any
          claim) that may be asserted against the Company arising out of any
          negligent action or omission by the Trustee hereunder or arising out
          of its willful misconduct hereunder.

               (b)  If the Trustee undertakes or defends any litigation, action,
proceeding or appeal arising in connection with this Trust, the Company agrees
to indemnify the Trustee against the Trustee's costs, expenses and liabilities
(including, without limitation, reasonable attorneys' fees and expenses)
relating thereto and to be primarily liable for such payments, and to make
periodic payments in respect of such fees and expenses during the course of any
such proceedings.  The Trustee shall not be required to take any action pursuant
to Section 6(b)(4), or pursuant to a direction by the Company pursuant to
Section 11(b), or otherwise, unless it shall have been indemnified by the
Company or the Trust to the Trustee's reasonable satisfaction against any
liabilities and expenses it might incur therefrom.  The Trustee shall also be
entitled to reasonable payment from the Trust for allocation of the Trustee's
personnel to the investigation and defense or prosecution thereof, at the
Trustee's normal hourly billing rates.  If the Company does not pay such costs,
fees, expenses and liabilities in a reasonably timely manner, the Trustee shall
charge the assets of the Trust to the extent sufficient for any unpaid costs,
fees, expenses and liabilities.

               (c)  Any charges allocable to the Trust under this Section or
Section 10 shall be allocated pro rata, to and among the Equitable Shares of the
Plans having an interest in the claim, action or proceeding.

               (d)  Under no circumstances shall the Trustee incur liability in
contract, tort or otherwise to any Person for any consequential, special or
punitive damages, whether or not foreseeable, with respect to the Trust or its
role as Trustee of the Trust.

          10.  Expenses and Compensation of Trustee.

          The Company shall pay to or reimburse the Trustee its reasonable
expenses incurred or arising out of the management and administration of the
Trust, including, without limitation, advances for or prompt reimbursement of
reasonable fees and expenses of counsel and any other Person which provides
services contemplated herein or under any Plan, and, in addition, the Company
shall pay the Trustee reasonable compensation for the Trustee's services
hereunder, the amount of which shall be agreed upon from time to time by the
Company and the Trustee in writing; provided, however, that, to the extent that
the Company does not timely pay or reimburse any amounts payable or reimbursable
by the Company pursuant to this Section 10, such amounts shall be paid or
reimbursed from the assets of the Trust and, until so paid or reimbursed, shall
be a charge on the Trust and shall constitute a lien on the assets of the Trust
in favor of the Trustee.  If the Trustee

                                      -12-
<PAGE>

amends its fee schedules and forwards an amended fee schedule to the Company
requesting its agreement thereto and the Company fails to object thereto in
writing within ninety (90) days thereafter, the amended fee schedule shall be
deemed to be agreed upon by the Company and the Trustee, as of its stated
effective date.

          11.  Taxes.

               (a)  All income, deductions and credits attributable to the Trust
belong to the Company and will be included on the Company's income tax returns.
Any and all Federal, state, local or other tax returns required to be filed with
respect to the Trust shall be prepared and filed by the Company.  The Company
shall pay any Federal, state, local or other taxes imposed or levied with
respect to the assets and/or income of the Trust or any part thereof under
existing or future laws.  Upon furnishing the Trustee with evidence reasonably
required by the Trustee of any such tax payments made directly by the Company,
the Company shall be entitled to receive reimbursement from the assets of the
Trust for the full amount of such taxes paid by it.  The Trustee shall promptly
notify the Company of any notice it receives relating to any taxes imposed or
levied with respect to the assets and/or income of the Trust.  If the Trustee
receives notice that any such taxes are not timely paid by the Company, the
Trustee shall pay such taxes from the assets of the Trust to the extent
sufficient therefor, prior to any payments to Participants, after notifying the
Company as herein provided.  As provided in Section 2(b), the Trustee shall
deduct any taxes required to be withheld with respect to any payments made to
Participants pursuant to the Trust, with any such taxes being paid out of the
Trust.

               (b)  The Company, in its discretion, may undertake, at the sole
expense of the Company, to defend any tax claims which are asserted by the
Internal Revenue Service against any Participant and which the Company
determines would affect Participants generally. In addition, the Company may
contest or, subject to Section 9(b), direct the Trustee to contest the validity
or amount of any tax, claim, assessment or demand otherwise respecting the Trust
or any part thereof, but the Company shall have the sole authority and
responsibility to determine whether or not to appeal any determination made by
the Internal Revenue Service or by any court. The Company may, but shall not be
required to, agree to reimburse directly, or direct the Trustee to reimburse,
any Participant for any taxes, interest or penalties in respect of tax claims
hereunder which the Company determines would affect Participants generally, upon
receipt of documentation of same (but in no event shall the Trust be responsible
therefor in, the absence of such direction). Any distributions from the Trust to
a Participant under this Section for reimbursements of taxes (but not for
reimbursement of interest or penalties) shall reduce the benefits payable to
such Participant under the Plan.

          12.  Resignation and Removal of Trustee; Appointment of Successor.

               (a)  The Trustee may resign or be removed upon sixty (60) days'
prior written notice to or from the Company, as the case may be, at any time.

                                      -13-
<PAGE>

               (b)  Such resignation or removal shall be effective upon the
earlier of the expiry of the notice period provided herein (unless a shorter
period is agreed upon by the parties) and the appointment of a successor
trustee.

               (c)  Upon resignation or removal of the Trustee, the Company
shall appoint any natural person or persons or a bank or trust company, or
combination thereof, as a successor to replace the Trustee hereunder. Any such
successor trustee shall have all the rights, powers and duties granted the
Trustee hereunder, including ownership rights in the Trust assets. Such
appointment of a successor trustee shall be effected by delivery to the Trustee
of (i) a written appointment of such successor trustee, duly executed by the
Company and (ii) a written acceptance by such successor trustee, duly executed
thereby. The Trustee shall execute any instruments necessary or reasonably
requested by the successor trustee to evidence the transfer.

               (d)  If a successor trustee shall not have been appointed prior
to the effective time of the Trustee's resignation, the Trustee may apply to any
court of competent jurisdiction for the appointment of a successor trustee or
for instructions. All expenses of the Trustee in connection with such proceeding
shall be allowed and charged to the Trust as administrative expenses of the
Trust.

               (e)  The Trustee is authorized to reserve such amount as it may
deem advisable for payments of its fees and expenses in connection with the
settlement of its account or otherwise, and any balance of such reserve
remaining after the payment of such fees and expenses shall be paid over to the
successor trustee. The Trustee is authorized to invest such reserves in any
investment authorized under the terms of this Trust Agreement appropriate for
the temporary investment of cash reserves of trusts. After the acceptance and
approval of its account and the payment of its expenses, the Trustee shall
transfer and deliver the balance of the Trust to such successor, and the Trustee
shall have no further responsibilities to any Person under this Trust Agreement.

          13.  Amendment or Termination.

               (a)  This Trust Agreement (including any Appendices or Schedules)
may be amended, in whole or in part, at any time and from time to time, by the
Company. Notwithstanding the foregoing, (i) the Company shall ensure that no
such amendment conflicts with the terms of the Plan or shall make the Trust
revocable, and (ii) no amendment (including the deletion or addition of a Plan
on Appendix A) which affects the rights, duties or responsibilities of the
Trustee may be made without the Trustee's prior written consent.

               (b)  Any limitations contained in Section 13(a) shall not apply
with respect to any amendment which is reasonably necessary, in the opinion of
counsel to the Company and reasonably acceptable to the Trustee, to preserve the
status of the Trust as a grantor trust and the status of the Plan as unfunded
for Federal income tax purposes and for purposes of ERISA.

                                      -14-
<PAGE>

               (c)  The Trust shall not terminate until the date on which
Participants are no longer entitled to benefits pursuant to the terms of the
Plan; provided, however, the Trust shall terminate prior to such date if and
when all of the assets of the Trust are consumed in satisfaction of the claims
of the general creditors of the Company pursuant to Section 3. Upon satisfaction
of all liabilities under the Plans with respect to all Participants, the
Company, pursuant to a resolution of its Board of Directors, may terminate the
Trust by delivery to the Trustee of (i) a certified copy of such resolution,
(ii) a certification of the Plans' enrolled actuary confirming that all
liabilities under the Plans have been satisfied, and (iii) a written instrument
of termination duly executed and acknowledged in the same form as this Trust
Agreement.

               (d)  Upon termination of the Trust in accordance with this
Section 13, the Trustee shall, after acceptance and approval of its account, at
the direction of the Company, return any assets remaining in the Trust to the
Company. Upon completing such distribution, the Trustee shall be relieved and
discharged of any responsibilities under this Trust Agreement. The powers of the
Trustee under this Section and Section 12 shall continue as long as any assets
of the Trust remain in its possession.

          14.  Authorities.

               (a)  After the execution of this Trust Agreement, the Company or
any successor thereto shall promptly file with the Trustee a certified list of
the names and specimen signatures of the officers of the Company and any Persons
authorized to act for the Company or any successor thereto. The Company shall
cause each Investment Manager to file with the Trustee a certified list of the
names and specimen signatures of those individuals authorized to direct the
Trustee on its behalf. The Trustee shall be fully protected in acting upon any
certifications, instructions, notices, directions, requests or approvals and
other communications ("Instructions"), howsoever transmitted, received by the
Trustee and purporting to be from any such Persons which the Trustee reasonably
believed to be from such a Person, each such Instruction constituting a
certification by the Person so giving that such Instruction is in conformity
with the terms of the Plan, the Trust and/or other related documents, and the
Trustee shall be fully protected in omitting to act in the absence of
Instructions.

               (b)  Any agreement or understanding between the Company and any
Person (including an Investment Manager) or any other provision of this Trust
Agreement to the contrary notwithstanding, all Instructions to the Trustee shall
be in writing or in such other form including transmission by electronic means
through the facilities of third parties or otherwise, agreed to by the Trustee.
The Trustee shall be fully protected in acting in accordance therewith, but
shall not thereby assume responsibility for any errors or inaccuracies contained
in the Instructions to the Trustee or for any delays or failures in such
transmission facilities caused by the failure, breakdown or unavailability of
any such means of communication or equipment not due to the Trustee's own
negligence or willful misconduct.

                                      -15-
<PAGE>

               (c)  The Trustee shall have the right to assume, in the absence
of notice in writing to the contrary, that no event constituting a change in, or
terminating, the authority of any Person, including any Asset Manager, has
occurred.

               (d)  The Trustee shall incur no liability under this Trust
Agreement for any failure to act pursuant to any Instruction from any Asset
Manager, the Company or any other Person or the designee of any of them unless
and until it shall have been received in the form acceptable to the Trustee.

          15   Miscellaneous.

               (a)  Any provision of this Trust Agreement prohibited by law
shall be ineffective to the extent of any such prohibition, without invalidating
the remaining provisions hereof.

               (b)  Except as required by law, benefits payable to Participants
under this Trust Agreement may not be anticipated, assigned (either at law or in
equity), alienated, pledged, encumbered or subjected to attachment, garnishment,
levy, execution or other legal or equitable process by creditors of
Participants.

               (c)  This Trust Agreement shall be construed and interpreted
under, and the Trust hereby created shall be governed by, the laws of the State
of Illinois, insofar as such laws do not contravene any applicable Federal laws,
rule or regulations. Section 9 of this Trust Agreement shall be construed as a
contract between the Company and the Trustee according to the laws of the State
of Illinois in effect from time to time. Nothing in this Trust Agreement shall
be construed to subject the Trust created hereunder to ERISA or to cause it to
be treated as other than a grantor trust.

               (d)  This Trust Agreement shall be binding upon and inure to the
benefit of any successor(s) or assign(s) of the Company or the Trustee, or any
of its businesses, in whole or in part, as the result of merger, consolidation,
reorganization, transfer of assets or otherwise, and any subsequent successor
thereto. In the event of any such merger, consolidation, reorganization,
transfer of assets or other similar transaction, the successor to the Company or
the Trustee or its business or relevant part thereof or any subsequent successor
thereto shall promptly notify the other party hereto in writing of its
successorship and furnish it with the information specified in Section 14.

               (e)  The undertakings and obligations of the Company, and the
entitlements of the Trustee, under Sections 9 and 10 of this Trust Agreement
shall survive the termination, amendment or restatement of this Trust Agreement,
or the resignation or removal of the Trustee.

               (f)  Until notice be given in writing to the contrary, all
instructions, notices and other communications shall be delivered or sent:

                                      -16-
<PAGE>

               If to the Trustee to: Harris Trust and Savings Bank
                                     111 West Monroe Street
                                     Sixth Floor West
                                     Chicago, Illinois 60603
                                     Attention: Mark J. Kovel
                                     Tel.: (312) 461-7524
                                     Fax:  (312) 765-8080

               If to the Company to: Cabot Oil & Gas Corporation
                                     1200 Enclave Parkway
                                     Houston, Texas 77077
                                     Attention: Human Resources
                                     Tel.: (281) 589-4600
                                     Fax.: (281) 589-4910

               (g)  Notwithstanding any powers granted to the Trustee or any
other Person pursuant to this Trust Agreement or by applicable law, no Person
shall have any power that could give this Trust the objective of carrying on a
business and dividing the gains therefrom, within the meaning of Section
301.7701-2 of the Procedure and Administrative Regulations promulgated pursuant
to the Code.

               (h)  The Company shall, at any time and from time to time, upon
the reasonable request of the Trustee, execute and deliver such further
instruments and do such further acts as may be necessary or proper to effectuate
the purpose of this Trust Agreement.

               (i)  Neither the gender nor the number (singular or plural) of
any word shall be construed to exclude another gender or number when a different
gender or number would be appropriate.

               (j)  The words "paragraph" and "Section" shall be to provisions
of this Trust Agreement and the titles to Sections of this Trust Agreement are
for convenience of reference only, and this Trust Agreement is not to be
construed by reference thereto.

               (k)  This Trust Agreement may be executed in any number of
counterparts, each of which shall be deemed to be an original, but all of which
shall together constitute only one agreement.

               (l)  The Trustee's obligations are limited to those set out in
this Trust Agreement. No additional duties or obligations shall be imposed on
the Trustee or implied from the terms of this Trust Agreement. In case of any
conflict or inconsistency between the terms of this Trust Agreement and any
Plan, in determining the obligations and responsibilities of the Trustee, the
terms of this Trust Agreement shall control.

               (m)  The Company hereby irrevocably and unconditionally agrees
for itself and for any Participants (or their beneficiaries) that all claims,
actions, suits or proceedings against,

                                      -17-
<PAGE>

or involving, the Trust, this Agreement or the Trustee shall exclusively be
brought in the Court of the State of Illinois sitting in Cook County or in the
Federal District Court for the Northern District of Illinois, and it further
agrees that all such claims, actions, suits or proceedings shall be heard and
determined by such courts. Nothing in this Agreement shall affect any right that
the Trustee may have to bring any claim, action, suit or proceeding relating to
this Agreement or the Trust against the Company or any other person in the
courts of any other jurisdiction.

          16   Definitions.

          When used herein, the following terms shall have the following
meanings:

               (1)  "Asset Manager" shall mean, individually or collectively as
          the context shall require, the Trustee, with respect to those assets
          of the Trust allocated to the Discretionary Fund, or an Investment
          Manager or the Company with respect to those assets of the Trust
          allocated to a Directed Fund to the extent each is authorized to
          exercise, discretionary investment authority or control over such
          assets under Section 5(a).

               (2)  "Chief Executive Officer" shall mean the highest ranking
          officer of the Company at the relevant time.

               (3)  "Code" shall mean the Internal Revenue Code of 1986, as
          amended, and the regulations promulgated and rulings issued
          thereunder.

               (4)  "Directed Fund" shall mean each portion of the Trust subject
          to the discretionary management and control of an Asset Manager other
          than the Trustee. If more than one Directed Fund is established under
          this Trust Agreement, "Directed Fund" shall also mean the Directed
          Fund subject to the management and control of a particular Asset
          Manager, as the context may require.

               (5)  "Discretionary Fund" shall mean any portion of the Trust
          subject to the discretionary management and control of the Trustee
          pursuant to a separate written asset management agreement between the
          Company and the Trustee.

               (6)  "Equitable Share" shall mean the interest of any Plan in the
          Trust or, if the context shall require, an Investment Fund.

               (7)  "ERISA" shall mean the Employee Retirement Income Security
          Act of 1974, as amended, and the regulations promulgated and rulings
          issued thereunder.

               (8)  "Insolvent" shall mean (i) the Company is generally not
          paying its debts as such debts become due unless such debts are the
          subject of a bona fide dispute, or (ii) the Company is subject to a
          pending proceeding as a debtor under the United States Bankruptcy
          Code, Title 11 of the United States Code, or other

                                      -18-
<PAGE>

          proceedings intended to liquidate or rehabilitate the Company's
          estate, or (iii) the Company is subject to regulation by Federal or
          state regulators and such regulators have determined that the Company
          is insolvent or should be placed in Insolvency or similar proceedings.

               (9)  "Investment Fund" shall mean an account allocated to an
          Asset Manager for investment in which one or more Plans may have an
          interest.

               (10) "Investment Manager" shall mean (i) an investment adviser
          registered under the Investment Advisers Act of 1940, (ii) an
          investment adviser which is not registered as an investment adviser
          under such Act by reason of paragraph (1) of section 203A(a) of such
          Act but is registered as an investment adviser under the laws of the
          state in which it maintains its principal office and place of
          business, and, at the time such adviser last filed the registration
          form most recently filed by it with such State in order to maintain
          the its registration under the laws of such State, also filed a copy
          of such form with the United States Secretary of Labor; (iii) a bank
          as defined in that Act, or (iv) an insurance company qualified to
          manage, acquire or dispose of any assets of the trusts under the laws
          of one or more State.

               (11) "Participant" shall mean an active or former employee or
          director of the Company who is a participant under a Plan, and any
          beneficiary of such an employee or director.

               (12) "Payment Schedule" means the document delivered to the
          Trustee by the Company or Recordkeeper showing the amounts payable in
          accordance with the terms of the Plan in respect of each Participant,
          the manner in which such amounts are to be paid (as provided for or
          available under the Plan), the time of commencement for payment of
          such amounts, the addresses or depositary to which such payments are
          to be sent, and the Plan, and if relevant, the Investment Fund(s), to
          be charged.

               (13) "Person" shall mean a natural person, trust,.estate,
          corporation of any kind or purpose, mutual company, joint-stock
          company, unincorporated organization, association, partnership, joint
          venture, employee organization, committee, board, Participant,
          trustee, partner, or venturer acting in an individual, fiduciary or
          representative capacity, as the context may require.

               (14) "Recordkeeper" shall mean the Company, or, if different, the
          Person (other than the Trustee) appointed by the Company to discharge
          the Company's obligations under Section 2.

               (15) "Securities Act" shall mean the Securities Act of 1933, as
          amended.

                                      -19-
<PAGE>

               (16) "writing" or "written" shall mean a manually signed
          instrument or electronic transmission through a facility approved by
          the Trustee.

          17   Effective Date.

          The effective date of this Trust Agreement shall be the date of its
execution set forth on page 1 of this Trust Agreement, or, if later, the date of
its adoption by a Plan added to Appendix A after such date.

          18   Establishment of Trust by Affiliates.

               (a)  Any affiliate or subsidiary of the Company (an "Affiliate"
and "Parent", respectively) that is obligated to provide benefits to
Participants under one or more non-qualified deferred compensation or
supplemental retirement Plans may, with the consent of the Parent and the
Trustee, by execution of an adoption agreement substantially in the form of
Appendix B, elect to establish a trust (the "Affiliate Trust"), which shall be a
separate trust subject to all of the terms and conditions of this Trust
Agreement (including the provisions of this Section 18) to the same extent and
effect as if it had been separately negotiated between the Trustee and such
Affiliate (the "Affiliate Trust Agreement"), pursuant to which (and except as
herein provided) such Affiliate shall be "the Company" and Grantor thereof for
all purposes of such Affiliate Trust Agreement (including, without limitation,
the provisions of paragraphs (c) and (d) of Section 1 and Section 3, which
provisions shall be construed to apply separately to the Parent and each
Affiliate.

               (b)  The Affiliate-Grantor appoints Parent, including its
designees under Section 14, as its agent for all purposes of the Affiliate Trust
Agreement to receive notices, reports or other communications hereunder, to give
Confirmations under Section 3, or, where action is required to or may be taken
by or on behalf of the "Company" to take or refrain from taking such acts, and
Affiliate shall be bound by the decisions, Instructions and actions of the
Parent under or affecting the Affiliate Trust Agreement, and the Trustee shall
be fully protected by the Parent and the Affiliate-Grantor under Section 9 and
Section 15(e) in relying upon the decisions, instructions, actions, and
directions of the Parent; provided, however, in no event shall Parent use the
power and authority granted it hereunder to direct the Trustee to pay over any
assets of the Trust to the Parent under Section 4 or Section 13, or creditors of
Parent under Section 3.

               (c)  The Trustee shall not be required to give notice to or to
obtain the consent of the Affiliate-Grantor with respect to any action to be
taken by the Trustee on or pursuant to the actions of the Parent pursuant to the
Affiliate Trust Agreement, and the Parent shall have the sole authority to
enforce the Affiliate Trust Agreement on behalf of any Affiliate.

                                      -20-
<PAGE>

          IN WITNESS WHEREOF, the parties hereto have caused this Trust
Agreement to be duly executed as of the day and year first above written.

Attest:                        CABOT OIL & GAS CORPORATION

By: _______________________          By: __________________________
    Name:                                Name:
    Title:                               Title:

Attest:                              HARRIS TRUST AND SAVINGS BANK

By: _______________________          By: __________________________
    Name:                                Name:
    Title:                               Title:

                                      -21-
<PAGE>

STATE OF ILLINOIS    )
                     ) ss.:
COUNTY OF COOK    )

          On the ____ day of ____________, 2000, before me personally came
_________________ to me known, who being by me duly sworn, did depose and say:
that he/she resides in ____________________________; that he/she is the
_____________________________ of  HARRIS  TRUST AND SAVINGS BANK, the
corporation described in and which executed the above instrument; that he/she
knows the seal of said corporation; that the seal affixed to said instrument
is such corporate seal; that it was so affixed by order of the Board of
Directors of said corporation, and that he/she signed his/her name thereto by
like order.

                                             Notary Public

STATE OF TEXAS       )
                     ) ss.:
COUNTY OF HARRIS     )

          On the _____ day of ____________, 2000, before me personally came
_______________, to me known, who being by me duly sworn, did depose and say:
that he/she resides in Houston, Texas; that he/she is the _______________ of
Cabot Oil & Gas Corporation, the corporation described in and which executed the
above instrument; that he/she knows the seal of said corporation; that the seal
affixed to said instrument is such corporate seal; that it was so affixed by
order of the Board of Directors of said corporation, and that he/she signed
his/her name thereto by like order.

                                             Notary Public

                                      -22-
<PAGE>

                                                                      APPENDIX A
                                                                      ----------

                                   The Plan
                                   --------

             The following Company plan is subject to this Trust:

                         The Cabot Oil & Gas Corporation
                         Deferred Compensation Plan,
                         effective as of June 1, 1998

                                      -23-
<PAGE>

                                                                      APPENDIX B
                                                                      ----------

                          Form of Adoption Agreement
                          --------------------------

          The undersigned __________________________ (the "Affiliate"), a
_____________ of _____________________ (the "Parent"), has adopted, and/or
incurred, or expects to incur, liability under, one or more nonqualified
deferred compensation plans listed in Appendix A to that certain Trust Agreement
(the "Trust Agreement"), made as of ________________ ___, 20___, by and between
the Parent and Harris Trust and Savings Bank (the "Trustee").  The Affiliate
hereby adopts the Trust Agreement for the uses and purposes set forth in the
Trust Agreement, which, for purposes hereof, shall be construed as applying
separately to the Affiliate as if the Affiliate were the "Company", therein,
except as otherwise provided herein or in Section 18 of the Trust Agreement. As
so adopted by the Affiliate, the Trust Agreement shall be known as the
"Affiliate Trust Agreement," and the Affiliate shall be the Grantor of the
separate trust established by the Affiliate Trust Agreement.

          The Affiliate agrees and confirms that it shall be subject to all of
the terms and conditions of the Trust Agreement, as heretofore or hereafter
amended.  The Affiliate further agrees and confirms that: (a) it will be bound
by the decisions, instructions, actions and directions of the Parent under or
affecting the Affiliate Trust Agreement and the Affiliate as provided in Section
18 of the Trust Agreement, and the Trustee shall be fully protected by the
Affiliate in relying upon the decisions, instructions, actions, and directions
of the Parent; (b) the Trustee shall not be required to give notice to or to
obtain the consent of the Affiliate with respect to any action taken or to be
taken by the Trustee on or to the instructions of the Parent or otherwise
pursuant or with respect to the Affiliate Trust Agreement; and (c) the Parent
shall have the sole authority to enforce the Affiliate Trust Agreement on behalf
of the Affiliate.

                                      -24-
<PAGE>

          IN WITNESS WHEREOF, the Affiliate has caused this Adoption Agreement
to be duly executed as of this ____ day of __________________________, 2000.

AFFILIATE                             Attest:

By: _____________________________     By: ________________________________
    Name:                                 Name:
    Title:                                Title:

Accepted and agreed:
PARENT

By: _____________________________     Date: ______________________________
    Name:
    Title:

HARRIS TRUST AND SAVINGS BANK

By: _____________________________      Date: _____________________________
    Name:
    Title:

                                      -25-
<PAGE>

STATE OF ILLINOIS        )
                         ) ss. :
COUNTY OF COOK       )

          On the ____ day of _______________________, 2000, before me personally
came _____________________________________ to me known, who being by me duly
sworn, did depose and say: that he/she resides in______________________________;
that he/she is the _____________________________ of HARRIS TRUST AND SAVINGS
BANK, the corporation described in and which executed the above instrument; that
he/she knows the seal of said corporation; that the seal affixed to said
instrument is such corporate seal; that it was so affixed by order of the Board
of Directors of said corporation, and that he/she signed his/her name thereto by
like order.

                                        Notary Public

STATE OF TEXAS      )
                    )  ss.  :
COUNTY OF HARRIS    )

          On the ____ day of ________________________, 2000, before me
personally came __________________________________ to me known, who being by me
duly sworn, did depose and say: that he/she resides in
___________________________________; that he/she is the
_______________________________ of the ____________________________, the
corporation described in and which executed the above instrument; that he/she
knows the seal of said corporation; that the seal affixed to said instrument is
such corporate seal; that it was so affixed by order of the Board of Directors
of said corporation, and that he/she signed his/her name thereto by like order.

                                        Notary Public

                                      -26-
<PAGE>

STATE OF       )
               )  ss. :
COUNTY OF      )

          On the ____day of __________________________, 2000, before me
personally came_______________________________ to me known, who being by me duly
sworn, did depose and say: that he/she resides in ___________________________;
that he/she is the  ____________ of the ___________________________, the
corporation described in and which executed the above instrument; that he/she
knows the seal of said corporation; that the seal affixed to said instrument is
such corporate seal; that it was so affixed by order of the Board of Directors
of said corporation, and that he/she signed his/her name thereto by like order.

                                        Notary Public

                                      -27-<PAGE>

                                                                   Exhibit 10.25

August 29, 2001

Mr. Dan O. Dinges
6606 Centre Place Circle
Spring, Texas 77379

Dear Dan:

The following reflects your revised compensation package with respect to your
joining Cabot Oil & Gas Corporation (the "Company") and replaces the offer
letter to you dated July 19, 2001:

..    Effective upon the date you report to work, the Board of Directors of the
     Company has appointed you a member of the Board of Directors and elected
     you to the office of President and Chief Operating Officer of the Company.
     You will report to work at the Company on or before September 17, 200l or
     on a later mutually agreed to date.

..    Commencing on the date you report to work at the Company, you will receive
     a base salary at the annual rate of $350,000. This salary will be subject
     to an annual review, normally completed in February each year, for possible
     increase.

..    On the date you report to work at the Company, you will receive a sign-on
     bonus of $150,000.

..    You will be a participant in the annual bonus program, the Annual Target
     Cash Incentive Plan. Your annual target will be 60% of your base salary.
     Actual award level is determined by Company performance, as defined by the
     terms of the Plan and objectives defined for annual performance. For 2001,
     your award will be prorated to reflect your employment for less than the
     entire year.

..    The term of this agreement will extend until your 65/th/ birthday. If your
     employment is terminated by the Company for any reason other than Cause or
     disability, or if you terminate your employment for Good Reason, you shall
     receive: (i) a lump sum cash payment equal to two times your annual base
     salary plus two times your annual target bonus, (ii) continuation of
     applicable
<PAGE>

Letter to Mr. Dan O. Dinges                                      August 29, 2001
                                                                     Page 2 of 4

     medical and life insurance programs for 24 months following termination at
     the premium rate applicable to active executives, (iii) full vesting of all
     of your restricted stock awards from the Company and (iv) full vesting of
     all your stock option awards from the Company. The stock options will
     continue to be exercisable until the earlier of (a) the third anniversary
     of the date of your termination or (b) the date on which the stock option
     would have expired had you remained an employee. The 24-month continuation
     of medical coverage shall be in addition to any coverage period available
     to you under COBRA.

     -    For purposes hereof, the term Cause means (i) a dishonest or other act
          of material misconduct that results in your substantial personal
          enrichment, results in a substantial economic loss to the Company, or
          is otherwise materially contrary to the best interest of the Company,
          or (ii) willful repeated refusals by you to substantially perform the
          duties of your position.

     -    For purposes hereof, the term Good Reason means the Company's
          assignment to you of any duties materially inconsistent with your
          position, or any other act by the Company that results in a diminution
          in your position, authority, duties or responsibilities, or any
          reduction in your base salary, bonus or long-term incentive
          opportunity, or any reduction in other benefits or perquisites (other
          than a reduction in those benefits or perquisites applicable to
          executive officers of the Company generally).

..    On the date you report to work at the Company, you will be granted an
     option to purchase 75,000 shares of Company common stock at an exercise
     price of the average of the high and low trading prices on that date. The
     option will become exercisable with respect to 25,000 of the shares on the
     first anniversary of the award, 25,000 of the shares on the second
     anniversary of the award, and 25,000 of the shares on the third anniversary
     of the award. The term of the option is five years, in accordance with the
     Company's customary stock option agreement.

..    On the date you report to work at the Company, you will be granted 25,000
     restricted shares of Company common stock. All 25,000 shares shall vest on
     the third anniversary of the award, in accordance with the Company's
     customary restricted stock award agreement.

..    You will next be eligible for a long-term incentive award as part of the
     normal annual award cycle defined for members of the executive group, which
     normally occurs in May of each year.
<PAGE>

Letter to Mr. Dan O. Dinges                                      August 29, 2001
                                                                     Page 3 of 4

..    You will be entitled to four weeks of vacation per year, and you will be
     entitled to participate in all benefit and perquisite programs offered by
     the Company to executive officers, including the Company's disability
     program, according to the terms of the plans as in effect from time to
     time.

..    The Company will pay the initiation fee for a Northgate Country Club
     membership and for one dining/luncheon club membership. These memberships
     shall be Company memberships. Ownership of the country club membership
     shall transfer to you, with the Company paying all expenses associated with
     the transfer, after completion of seven years of employment. The Company
     will pay the monthly dues for both of these clubs during your employment.

..    You will immediately be a participant in the Company's Change in Control
     Program, subject to your execution of the relevant Change in Control
     Agreement. In the event of a change in control of the Company, you will be
     required to elect between the benefits provided under this agreement and
     the benefits provided under the Change in Control Agreement.

..    The Company will provide to you term life insurance coverage equal to three
     times your annual salary, up to a policy maximum of $1 million, under its
     standard program for executives as in effect from time to time.

..    You will be entitled to participate in the Company's pension plan and
     supplemental plan in accordance with the terms of the relevant plan as in
     effect from time to time. The supplemental plan is designed to restore
     benefits lost under the pension plan as a result of provisions of the
     Internal Revenue Code of 1986, as amended, and the Employment Retirement
     Income Security Act of 1974, as amended.

..    You agree to abide by all Company policies, including execution of the
     Company's standard form of confidentiality agreement and passing a drug
     test (as have all current employees). You represent to the Company that you
     are not prohibited from entering into this agreement by any other
     agreement.

..    The Company shall pay all of the fees, costs and expenses (including
     reasonable attorneys' fees) that you incur in order to enforce your rights
     under this agreement. This provision shall only apply if you receive a
     judgement in your favor, as a result of your enforcement action.

..    No provision of this agreement may be amended unless such amendment is
     agreed to in writing and signed by you and an authorized officer of the
     Company.

..    This agreement may not be assigned or transferred by the Company without
     your prior written consent.
<PAGE>

Letter to Mr. Dan O. Dinges                                      August 29, 2001
                                                                     Page 4 of 4

..    This offer of employment shall remain open for your acceptance until 5:00
     p.m. (Central) on September 17, 2001. If you fail to execute and return
     this offer by the deadline, it shall be deemed revoked.

If you are in agreement with the terms and conditions contained in this letter,
please sign one copy in the space provided below and return to the undersigned.

                                        Very truly yours,

                                        /s/ Ray R. Seegmiller
                                        Ray R. Seegmiller

Accepted and agreed to by:

/s/ Dan O. Dinges
Dan O. Dinges

Date: September 17, 200l

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