Registration Rights Agreement - Tom Brown Inc. and K N Energy Inc.


                         REGISTRATION RIGHTS AGREEMENT

         This Registration Rights Agreement ('Agreement') is entered into by
and between Tom Brown, Inc., a Delaware corporation (the 'Company'), and K N
Energy, Inc., a Kansas corporation ('Stockholder'), pursuant to Sections 7.9
and 8.9 of that certain Agreement and Plan of Reorganization dated as of
January 31, 1996 (the 'Merger Agreement') by and among the Company, TBI
Acquisition, Inc., a Delaware corporation, K N Production Company, a Delaware
corporation and Stockholder.  Capitalized terms not otherwise defined herein
shall have the meanings ascribed to them in the Merger Agreement.

                                  WITNESSETH:

         WHEREAS, pursuant to the Merger Agreement Stockholder is acquiring
beneficial ownership of 1,000,000 shares of the $1.75 Convertible Preferred
Stock, Series A, par value $.10 ('Convertible Preferred Stock'), of the Company
and 918,367 shares of Common Stock, par value $.10 ('Common Stock'), of the
Company;

         WHEREAS, the Company has been advised that Stockholder, after
acquiring such Convertible Preferred Stock and Common Stock of the Company, is
an 'affiliate' of the Company, as that term is defined for purposes of
paragraphs (c) and (d) of Rule 145 promulgated by the Commission (hereinafter
defined);

         WHEREAS, upon consummation of the Merger, due to Stockholder's status
as an affiliate, Stockholder will be restricted under Rule 145 promulgated by
the Commission from effecting public sales and transfers of shares of
Convertible Preferred Stock (and the Common Stock underlying the same) and
Common Stock of the Company received by Stockholder as a result of the Merger;
and

         WHEREAS, the Company desires to grant Stockholder certain rights to
registration under the Act (hereinafter defined) so as to permit Stockholder
the opportunity to dispose of shares of Common Stock underlying the shares of
Convertible Preferred Stock and Common Stock of the Company received by
Stockholder as a result of the Merger without constraint by the restrictions
imposed by Rule 145 promulgated by the Commission;

         NOW, THEREFORE, for and in consideration of the premises and the
mutual agreements contained herein, the parties hereto agree as follows:

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

                 (a)      'Act' shall mean the Securities Act of 1933, as
         amended, or any similar federal statute enacted hereafter, and the
         rules and regulations of the Commission thereunder all as the same
         shall be in effect from time to time.

                 (b)      'Commission' shall mean the Securities and Exchange
         Commission or any other federal agency at the time administering the
         Act.

                 (c)      The terms 'register', 'registered' and 'registration'
         refer to a registration effected by preparing and filing a
         registration statement in compliance with the Act, and the declaration
         or ordering of the effectiveness of such registration statement.

                 (d)      'Registrable Common Stock' shall mean (i) the shares
         of Common Stock of the Company issued to Stockholder as a result of
         the Merger and (ii) the shares of Common Stock of the Company
         underlying the shares of Convertible Preferred Stock of the Company
         issued to Stockholder pursuant to the Merger.

         1.02    Required Registration.  At any time during a period of ten
years following the date of consummation of the Merger, Stockholder may request
that the Company effect a registration with respect to the Registrable Common
Stock, as follows:

                 (a)      Request for Registration of Common Stock.  If the
         Company shall receive from Stockholder a written request that the
         Company effect any registration with respect to 1,000,000 or more
         shares of the Registrable Common Stock, the Company will, as soon as
         practicable, use its diligent best efforts to effect all such
         registration, qualification and compliance (including, without
         limitation, the execution of an undertaking to file post-effective
         amendments, appropriate qualification under applicable blue sky or
         other state securities laws and appropriate compliance with applicable
         regulations issued under the Act) as may be so requested and as would
         permit or facilitate the sale and distribution of all or such portion
         of such Registrable Common Stock as is specified in such request.

                 (b)      Underwriting.  If the Stockholder intends to
         distribute the Registrable Common Stock covered by its request by
         means of an underwriting, the Stockholder shall so advise the Company
         as a part of its request made pursuant to this Section 1.02.

                 The Company shall (together with the Stockholder proposing to
         distribute its Registrable Common Stock through such underwriting)
         enter into an underwriting agreement in customary form and containing
         representations, warranties and agreements not substantially different
         from those customarily included by an issuer in underwriting
         agreements with respect to secondary distributions with the
         representative of the lead managing underwriter selected for such
         underwriting by the Stockholder and approved by the Company, which
         approval shall not be unreasonably withheld, and any co-managing
         underwriters mutually selected for such underwriting by the
         Stockholder and the Company, the approval of which selection shall not
         be unreasonably withheld by either party.  Notwithstanding any other
         provision of this Section 1.02, if the lead managing underwriter
         determines, in good faith that marketing factors require a limitation
         of the number of shares to be underwritten, the underwriter may limit
         the number of shares of Registrable Common Stock to be included in the
         registration and underwriting to the extent such underwriter deems
         necessary.  The Company shall so advise the Stockholder, and the
         number of shares of Registrable Common Stock that


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         may be included in the registration and underwriting shall be reduced
         to the number which the underwriter is willing to include in the
         registration.  If the Stockholder disapproves of the terms of the
         underwriting, the Stockholder may elect to withdraw therefrom by
         written notice to the Company and the underwriter and the Registrable
         Common Stock so withdrawn shall also be withdrawn from registration
         but shall be entitled to such registration rights granted to such
         Registrable Common Stock pursuant to this Section 1.02 as may
         thereafter remain in effect.

                 The Company and the holders of the Common Stock and of any
         other security of the Company to whom the Company has granted
         registration rights substantially identical to those granted to the
         Stockholder may include their respective securities for their own
         accounts in such requested registration if the underwriter so agrees
         and if the number of shares of Registrable Common Stock and other
         securities which would otherwise have been included in such
         registration and underwriting will not thereby be limited and if such
         inclusion will not otherwise adversely impact the offering.

                 (c)      Expenses of Requested Registration.  The Company
         shall bear all expenses incurred in connection with each registration,
         qualification or compliance pursuant to Section 1.02(a), including,
         without limitation, all registration, filing and qualification fees,
         printing expenses, audit fees and fees and disbursements of counsel
         for the Company and counsel for the underwriters, if any (unless any
         such underwriter pays such counsel fees) (but excluding underwriter's
         commissions, fees and expenses allocable to the Registrable Common
         Stock of the Stockholder and fees of independent counsel and
         accountants, if any, for the Stockholder, which commissions, fees and
         expenses and fees of counsel and accountants shall be borne pro rata
         (by share) by the Stockholder and any other offeror employing such
         counsel and accountants in such registration).

                 (d)      Limitations on Registration.  Notwithstanding any
         provision to the contrary in this Section 1.02, the Company shall not
         be obligated to take any action to effect any such registration,
         qualification or compliance pursuant to Section 1.02(a) if (i)
         reputable counsel designated by the Company delivers an opinion to the
         Stockholder, in form and substance satisfactory to the Stockholder, to
         the effect that the Registrable Common Stock specified in the request
         for registration may be sold or distributed as planned by the
         Stockholder without registration or (ii) the Company has effected an
         aggregate of two previous registrations pursuant to this Section
         1.02(a).

                 (e)      Assignability and Assumption.  The registration
         rights granted to Stockholder in this Section 1.02 may be assigned in
         whole or in part by Stockholder to any affiliate of the Stockholder in
         connection with a transfer of Registrable Common Stock to such
         affiliate provided that (i) Stockholder shall remain liable for its
         obligations hereunder, (ii) Stockholder provides the Company with
         written notice of such assignment, (iii) the assignee of such rights
         agrees in writing to be bound by the terms and conditions of this
         Agreement, and (iv) if such assignment is in part, Stockholder shall
         be agent for assignee for the purpose of exercising assignee's rights
         hereunder.


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         Except as provided in the preceding sentence the registration rights
         granted to Stockholder in this Section 1.02 shall not be assignable

         1.03    Registration Rights; Company Registration.

                 (a)      Registration Initiated by the Company.  If the
         Company shall determine to register any shares of Common Stock of the
         Company, either for its own account or for the account of a security
         holder or holders exercising their respective demand registration
         rights (other than a registration relating to stock options or
         employee benefit plans, any dividend reinvestment plan of the Company,
         or the acquisition or purchase by or combination by merger or
         otherwise of the Company of or with another company or business entity
         or partnership or a registration pursuant to Section 1.02) the Company
         will:

                          (i)     promptly give to the Stockholder written
                 notice thereof (which shall include (to the extent known) a
                 list of the jurisdictions in which the Company intends to
                 attempt to qualify such securities under the applicable blue
                 sky or other state securities laws); and

                          (ii)    include in such registration (and any related
                 qualification under blue sky laws or other compliance), and in
                 any underwriting involved therein, all the Registrable Common
                 Stock specified in a written request or requests, made within
                 20 days after receipt of such written notice from the Company,
                 by the Stockholder, except as set forth in Section 1.03(b)
                 below.

                 (b)      Underwriting.  If the registration of which the
         Company gives notice to the Stockholder is for a registered public
         offering involving an underwriting, the Company shall so advise the
         Stockholder as a part of the written notice given pursuant to Section
         1.03(a)(i).  In such event, the right of the Stockholder to
         registration pursuant to this Section 1.03 shall be conditioned upon
         the Stockholder's participation in such underwriting and the inclusion
         of the Stockholder's Registrable Common Stock in the underwriting to
         the extent provided herein.  The Stockholder proposing to distribute
         shares of its Registrable Common Stock through such underwriting
         (together with the Company and the other holders (if any) distributing
         their securities through such underwriting) shall enter into an
         underwriting agreement in customary form with the underwriter or
         underwriters selected for such underwriting by the Company.
         Notwithstanding any other provision of this Section 1.03, if the lead
         managing underwriter determines, in good faith, that marketing factors
         require a limitation of the number of shares to be underwritten, the
         underwriter may limit the number of shares of Registrable Common Stock
         to be included in the registration and underwriting to the extent such
         underwriter deems necessary.  The Company shall so advise the
         Stockholder, and the number of shares of Registrable Common Stock that
         may be included in the registration and underwriting shall be reduced
         to the number which the underwriter is willing to include in the
         registration.   If the Stockholder disapproves of the terms of any





                                      -4-

         such underwriting, the Stockholder may elect to withdraw therefrom by
         written notice to the Company and the underwriter.  Any Registrable
         Common Stock excluded or withdrawn from such underwriting shall be
         withdrawn from such registration but shall be entitled to such
         registration rights granted to such Registrable Common Stock pursuant
         to this Section 1.03 as may thereafter remain in effect..

                 (c)      Expenses of Registration by the Company.  The Company
         shall bear all expenses incurred in connection with each registration,
         qualification or compliance pursuant to this Section 1.03, including,
         without limitation, all registration, filing and qualification fees,
         printing expenses, audit fees and fees and disbursements of counsel
         for the Company and counsel for the underwriters, if any (unless any
         such underwriter pays such counsel fees) (but excluding underwriter's
         commissions, fees and expenses allocable to the Registrable Common
         Stock of the Stockholder and fees of independent counsel and
         accountants, if any, for the Stockholder, which commissions, fees and
         expenses and fees of counsel and accountants shall be borne pro rata
         (by share) by the Stockholder and any other offeror employing such
         counsel and accountants in such requested registration).

                 (d)      Limitations on Registration.  The Company's
         obligation to effect a registration under Section 1.03(a) shall expire
         ten years from the date of consummation of the Merger.
         Notwithstanding any provision to the contrary in this Section 1.03,
         the Company shall not be obligated to take any action to effect any
         such registration, qualification or compliance pursuant to Section
         1.03 if the Company has effected an aggregate of two previous
         registrations in which shares of Registrable Common Stock of the
         Stockholder were included pursuant to this Section 1.03.

                 (e)      Assignability and Assumption.  The registration
         rights granted to Stockholder in this Section 1.03 may be assigned in
         whole or in part by the holder thereof in connection with any transfer
         of Convertible Preferred Stock or Common Stock of the Company provided
         that (i) the assignor provides the Company with written notice of such
         assignment, and (ii) the assignee of such rights agrees in writing to
         be bound by the terms and conditions of this Agreement.  In the event
         of a partial assignment, the holders of Registrable Common Stock shall
         possess the rights granted in this Section 1.03 pro rata in accordance
         with the number of shares of Registrable Common Stock beneficially
         owned by each of them and each such holder shall be entitled to
         receive a copy of all notices provided for in this Agreement and to
         exercise such part of the rights so granted.

         1.04    Registration Procedures.  In the case of each registration,
qualification or compliance effected by the Company pursuant to this Agreement
pursuant to which Registrable Common Stock  of the Stockholder is included
therein, the Company will keep the Stockholder advised in writing as to the
initiation of each registration, qualification and compliance and as to the
completion thereof.  At its expense, the Company will:





                                      -5-

                 (a)      keep such registration, qualification or compliance
         effective for a period of at least 120 days or until the Stockholder
         has completed the distribution described in the registration statement
         relating thereto, whichever first occurs;

                 (b)      furnish such number of prospectuses and other
         documents incident thereto as the Stockholder from time to time may
         reasonably request; and

                 (c)      list such Registrable Common Stock on each securities
         exchange (if any) on which the Common Stock of the Company is listed.

         1.05    Indemnification.

                 (a)      The Company shall, if Registrable Common Stock held
         by the Stockholder is included in the securities as to which such
         registration, qualification or compliance is being effected, indemnify
         the Stockholder, each of its officers and directors, and each person
         controlling the Stockholder, with respect to each  registration,
         qualification or compliance which has been effected pursuant to
         Section 1.02 or 1.03, and each underwriter, if any, and each person
         who controls any underwriter, against all claims, losses, damages and
         liabilities (or actions in respect thereof) arising out of or based on
         any untrue statement (or alleged untrue statement) of a material fact
         contained in any prospectus, offering circular or other document
         (including any related registration statement, notification or the
         like) incident to any such registration, qualification or compliance,
         or based on any omission (or alleged omission) to state therein a
         material fact required to be stated therein or necessary to make the
         statements not misleading, and will reimburse the Stockholder, each of
         its officers and directors, and each person controlling the
         Stockholder, each such underwriter and each person who controls any
         such underwriter, for any legal and any other expenses reasonably
         incurred in connection with investigating or defending any such claim,
         loss, damage, liability or action, provided that the Company will not
         be liable in any such case to the extent that any such claim, loss,
         damage, liability or expense arises out of or is based on any untrue
         statement or omission based upon written information furnished to the
         Company by the Stockholder or underwriter specifically for use
         therein.  Such indemnity shall remain in full force and effect
         regardless of any investigation made by or on behalf of such party and
         shall survive the subsequent transfer of shares of Common Stock of the
         Company by the seller thereof and the transfer of any shares of Common
         Stock of the Company which were the subject of such registration,
         qualification or listing.

                 (b)      The Stockholder will, if Registrable Common Stock
         held by  the Stockholder is included in the securities as to which
         such registration, qualification or compliance is being effected,
         indemnify the Company, each of its directors and officers, each legal
         counsel and independent accountant of the Company, each underwriter,
         if any, of the Company's securities covered by such a registration
         statement, each person who controls the Company or such underwriter
         within the meaning of the Act, and each other holder of Common Stock
         of the Company registering securities of the Company





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         in such registration, each of its officers and directors and each
         person controlling such holder, against all claims, losses, damages
         and liabilities (or actions in respect thereof) arising out of or
         based on any untrue statement (or alleged untrue statement) of a
         material fact contained in any such registration statement,
         prospectus, offering circular or other document, or any omission (or
         alleged omission) to state therein a material fact required to be
         stated therein or necessary to make the statements therein not
         misleading, and will reimburse the Company, such holders, such
         directors, officers, persons, underwriters or control persons for any
         legal or any other expenses reasonably incurred in connection with
         investigating or defending any such claim, loss, damage, liability or
         action, in each case to the extent, but only to the extent, that such
         untrue statement (or alleged untrue statement) or omission (or alleged
         omission) is made in such registration statement, prospectus, offering
         circular or other document in reliance upon and in conformity with
         written information furnished to the Company by the Stockholder
         specifically for use therein; provided; however, that (i) the
         obligations of the Stockholder hereunder shall be limited to an amount
         equal to the proceeds to the Stockholder of Registrable Common Stock
         sold as contemplated herein and (ii) the indemnity for untrue
         statements or omissions described above shall not apply if the
         Stockholder providing such written information provides the Company
         with such additional written information prior to the effectiveness of
         the registration as is required to make the previously supplied
         written information true and complete, together with a description in
         reasonable detail of the information previously supplied which was
         untrue or incomplete.

                 (c)      Each party entitled to indemnification under this
         Section 1.05 (the 'Indemnified Party') shall give notice to the party
         required to provide indemnification (the 'Indemnifying Party')
         promptly after such Indemnified Party has actual knowledge of any
         claim as to which indemnity may be sought, and shall permit the
         Indemnifying Party to assume the defense of any such claim or any
         litigation resulting therefrom, provided that counsel for the
         Indemnifying Party, who shall conduct the defense of such claim or
         litigation, shall be approved by the Indemnified Party (whose approval
         shall not unreasonably be withheld), and the Indemnified Party may
         participate in such defense at such party's expense, and provided
         further that the failure of any Indemnified Party to give notice as
         provided herein shall not relieve the Indemnifying Party of any
         obligations it may have otherwise than on account of this Section
         1.05.  After notice from the Indemnifying Party to the Indemnified
         Party of its election to assume the defense of such claim or
         litigation, the Indemnifying Party will not be liable to such
         Indemnified Party for any legal or other expenses subsequently
         incurred by such Indemnified Party in connection with the defense
         thereof other than reasonable costs of investigation, unless the
         Indemnifying Party abandons the defense of such claim or litigation.
         No Indemnifying Party, in the defense of any such claim or litigation,
         shall, except with the consent of each Indemnified Party, consent to
         entry of any judgment or enter into any settlement which does not
         include as an unconditional term thereof the giving by the claimant or
         plaintiff to such Indemnified Party of a release from all liability in
         respect to such claim or litigation.





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         1.06    Information by Stockholder.  The Stockholder of Registrable
Common Stock included in any registration shall furnish to the Company such
information regarding the Stockholder and the distribution proposed by the
Stockholder as the Company may reasonably request in writing, and as shall be
required in connection with any registration, qualification or compliance
referred to in this Agreement.

         1.07    Postponement of Requested Registration.  If, within five days
of the Company's receipt of a registration request from the Stockholder, the
Company notifies the Stockholder in writing that (a) effecting the requested
registration would materially and adversely affect a material transaction then
under current consideration by the Company, as determined by the Board of
Directors, and such determination is confirmed by an independent investment
banker satisfactory to the Stockholder, or (b) such registration will require
preparation of audited financial information for the Company as of a date or
for a period for which preparation will not otherwise be required, then the
Company may postpone its performance of its obligations hereunder for a period
not to exceed 90 days.

         1.08    Amendments.  This Agreement may not be modified, amended,
altered or supplemented except by way of a written agreement executed by each
of the parties hereto.  However, either party may waive any condition to the
obligations of the other party hereunder.

         1.09    Notices.  All notices, requests, demands and other
communications required or permitted hereunder shall be in writing and shall be
deemed to have been duly give if delivered by hand or facsimile transmission:

                 (a)      If to the Company, to:

                          Tom Brown, Inc.
                          500 Empire Plaza Building
                          P. O. Box 2608
                          Midland, TX  79701
                          Attention:  Controller

                 (b)      If to Stockholder, to:

                          K N Energy, Inc.
                          370 Van Gordon Street
                          Lakewood, Colorado  80228
                          Attention:  General Counsel

         1.10    Recapitalization and Successors.  In the event of any stock
split, stock dividend, stock combination or other recapitalization or
reclassification of the Convertible Preferred Stock or the Common Stock of the
Company, the terms and provisions of this Agreement shall be appropriately
adjusted so that the terms and provisions of this Agreement shall apply
thereafter in the same manner to the capital stock of the Company created as a
result of such stock split,





                                      -8-

stock dividend, stock combination or other recapitalization or reclassification
as they originally applied to the Convertible Preferred Stock and Common Stock
of the Company.  The Company agrees that any successor to the Company by merger
or operation of law shall be bound by the terms of this Agreement and the terms
of this Agreement shall apply to any securities of the Company or such
successor received  in exchange for Registrable Common Stock.

                 IN WITNESS WHEREOF, the parties have executed this Agreement
this 31st day of January, 1996.

STOCKHOLDER:                            K N ENERGY, INC.


                                        By:  /s/ H. Rickey Wells
                                           ------------------------------------
                                        Name:  H. Rickey Wells
                                             ----------------------------------
                                        Title: Vice President - Operations
                                              ---------------------------------


COMPANY:                                TOM BROWN, INC.


                                        By:  /s/ Peter R. Scherer
                                           ------------------------------------
                                        Name:  Peter R. Scherer
                                             ----------------------------------
                                        Title: Executive Vice President
                                              ---------------------------------


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