EXHIBIT 2.2

                               PURCHASE SUPPLEMENT

         Pursuant to Section 2.3(a) of the Net Profits Purchase  Agreement dated
as of August 6, 2004 (the "NPP Agreement")  between Gasco Production  Company, a
Delaware corporation (the "Company"), Red Oak Capital Management LLC, a Delaware
limited  liability  company ("Red Oak"),  MBG, LLC, a Delaware limited liability
company ("MBG"),  and MBGV Partition,  LLC, a Delaware limited liability company
("MBG  Partition"  and,  collectively  with MBG and,  to the extent  provided in
Section 2.5(e) of the NPP Agreement, Red Oak, "NPI Purchaser"),  the Parties (as
defined in the NPP Agreement)  hereby enter into this Purchase  Supplement as of
August 20, 2004  ("Purchase  Supplement")  for the purpose of the acquisition of
Net Profits  Interests (as defined in the NPP Agreement) from the Company by the
NPI  Purchaser  and,  to the  extent  specified  in  Section  2.5(e)  of the NPP
Agreement,  Red Oak.  Capitalized terms used in this Purchase Supplement and not
defined have the meaning assigned to such terms in the NPP Agreement.

         1.1 Subject Interests.  In consideration of the payment of the Purchase
Price  Payment set forth in Section  2.5 of the NPP  Agreement,  Company  hereby
agrees to convey a Net Profits  Interest in the Subject  Interests  described in
Schedule 1 attached  hereto  ("Conveyed  Interests") on the Initial Closing Date
and the  Subsequent  Closing  Date.  Within 10 days of the date of this Purchase
Supplement,  Company will file a Conveyance and Security  Agreement with respect
to the Conveyed  Interests listed in Schedule 2 attached hereto.  Within 10 days
of the  Subsequent  Closing  Date,  Company will file a Conveyance  and Security
Agreement with respect to the Conveyed  Interests  listed in Schedule 3 attached
hereto.

         2.1  Subsequent   Closing  Date.  The  Initial  Closing  Date  for  the
conveyance  of the Conveyed  Interests  listed in Schedule 2 is the date of this
Purchase Supplement ("Initial Closing Date") and the Subsequent Closing Date for
the conveyance of the Conveyed  Interests listed in Schedule 3 shall be the date
on  which  the  Company  satisfies,  or the  NPI  Purchaser  waives,  all of the
conditions to closing  contained in the Letter Agreement  attached as Exhibit A,
or on such other date as shall be agreed in writing by the parties  ("Subsequent
Closing Date").

         3.1 Purchase Price Payment. The Purchase Price Payment for the Conveyed
Interests will be 25% of the Total Well Construction and Completion Costs of the
Conveyed  Interests,  which  is  currently  estimated  to be  $7,074,719.00,  as
specified in the AFE's for each Accepted Well that has been previously delivered
to the NPI Purchaser or is being  delivered with this Purchase  Supplement.  The
estimated Purchase Price Payment for each Accepted Well included in the Conveyed
Interests  is set forth in  Schedule  4. On the Initial  Closing  Date,  the NPI
Purchaser  will  pay  to  the  Company  $3,253,351,   reduced  by  $231,104,  as
contemplated by Section 2.5(a) of the NPP Agreement.  On the Subsequent  Closing
Date, the NPI Purchaser will pay to the Company  $1,537,036.  The Purchase Price
Payment on the Subsequent Closing Date will be reduced by an amount equal to all
NPI Payments that would have been due and payable to the NPI  Purchaser  through
the Subsequent  Closing Date assuming that the Conveyance  covering the Conveyed
Interests  listed in Schedule 3 had been made to the NPI Purchaser  effective on
the date of  commencement of production of each Accepted Well listed in Schedule
3. The  remaining  portion of the Purchase  Price Payment will be billed to, and
paid  by,  the NPI  Purchaser  as  contemplated  by  Section  2.5(b)  of the NPP
Agreement.

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         4.1 Allocation of Net Profits Interest.  The Net Profits Interest being
conveyed to each NPI Purchaser  pursuant to the Conveyance is as follows:  (a) a
12.375% Net Profits  Interest to MBG, (b) a 12.375% Net Profits  Interest to MBG
Partition, and (c) a .25% net Profits Interest to Red Oak.

         5.1 Bank Accounts.  The bank account for wiring Purchase Price Payments
to the  Company  is US Bank  National  Association,  for the  account  of  Gasco
Production Company,  Account # 1-943-1370-4166,  ABA Number 102000021.  The bank
account for refunding any  overpayments of Purchase Price Payments to (a) MBG is
M&I  Marshall & Ilsley  Bank,  1000 North  Water  Street,  Milwaukee,  WI 53202,
Attention  Roger Mjoen,  F/C:  89N133312 M Bradley Glass Tr - Road Oak Cap Mgmt,
DDA Account # 27006, ABA Number  075000051;  (b) MBG Partition is M&I Marshall &
Ilsley Bank,  1000 North Water  Street,  Milwaukee,  WI 53202,  Attention  Roger
Mjoen, F/C: 89N134310 M Bradley Partition Tr - Road Oak Cap Mgmt., DDA Account #
27006, ABA Number  075000051;  and (c) Red Oak is Post Oak Bank, for the account
of Red Oak Capital Management LLC, Account Number 000349, ABA Number 113024957.

         6.1 Use of Proceeds.  The Company will use the Purchase  Price  Payment
paid by NPI Purchaser solely to pay Total Well Construction and Completion Costs
for each  Accepted Well included in the Conveyed  Interests as  contemplated  by
Section 2.4 of the NPP Agreement.



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         IN WITNESS WHEREOF, this Purchase Supplement is executed as of the date
first written above.

                                       Gasco Production Company,
                                       a Delaware corporation


                                       By:      /s/ Mark A. Erickson
                                                Name:    Mark A. Erickson
                                                Title:   President


                                       MBG, LLC,
                                       a Delaware limited liability company


                                       By:      /s/ John G. Rocovich, Jr.
                                                Name:    John G. Rocovich, Jr.
                                                Title:   Chairman


                                       MBGV Partition, LLC,
                                       a Delaware limited liability company


                                       By:      /s/ John G. Rocovich, Jr.
                                                Name:    John G. Rocovich, Jr.
                                                Title:   Chairman


                                       Red Oak Capital Management LLC,
                                       a Delaware limited liability company


                                       By:      /s/ James M. Whipkey
                                                Name:    James M. Whipkey
                                                Title:   Managing Director



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