Document:

EXHIBIT 10.2

                     ASSIGNMENT, BILL OF SALE AND CONVEYANCE
                     ---------------------------------------

     THIS ASSIGNMENT, BILL OF SALE AND CONVEYANCE (this "Assignment"), dated
effective January 1, 2006 (the "Effective Date"), is from ALTEX OIL CORPORATION,
a Utah corporation whose address is PO Box 1057, Breckenridge, Colorado
80424-1057 ("Assignor") to Chaparral Energy, LLC, 701 Cedar Lake Blvd., Oklahoma
City, OK 73114 ("Assignee").

     For $10.00 and other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, Assignor hereby sells, assigns,
transfers, grants, bargains, conveys to Assignee all of Assignor's right, title
and interest, in and to the following (all of which are called the "Assets"):

1.   The oil and gas leases and other interests described in Exhibit A (the
     "Leases"), all right, title and interest in and to the oil, gas and all
     other hydrocarbons, whether liquid or gaseous (the "Hydrocarbons"), in, on
     or under or that may be produced from the lands covered by the Leases (the
     "Lands") after the Effective Date.

2.   The oil and gas wells located on the Leases and Lands and described in
     Exhibit A (the "Wells"), and all personal property and equipment associated
     with the Wells as of the Effective Date.

3.   The rights, to the extent transferable, in and to all existing and
     effective unitization, pooling and communitization agreements, declarations
     and orders, to the extent that they relate to or affect any of the
     interests described in Paragraphs 1 and 2 or the production of Hydrocarbons
     from the Leases, the Lands and the Wells.

4.   The rights, to the extent transferable, in and to Hydrocarbon sales,
     purchase, gathering, transportation and processing contracts, operating
     agreements, partnership agreements, farmout agreements and other contracts,
     agreements and instruments relating to the interests described in
     Paragraphs 1, 2 and 3.

5.   All of the personal property, fixtures, improvements, permits, licenses,
     approvals, servitudes, rights-of-way, easements and other surface rights
     located on or used in connection with the properties and interests
     described in Paragraphs 1 through 4, to the extent that they are located on
     the Leases or Lands and are used in connection with the Wells.

6.   The files, records, data and information relating to the items described in
     Paragraphs 1 through 5, maintained by Assignor.

     TO HAVE AND TO HOLD the Assets unto Assignee and its successors and assigns
forever.

     This Assignment is made and accepted expressly subject to the following
terms and conditions:

A.   THIS ASSIGNMENT IS MADE WITHOUT ANY WARRANTY OR REPRESENTATION OF ANY KIND
     OR CHARACTER, WHETHER EXPRESS, IMPLIED OR STATUTORY, AND ASSIGNOR HEREBY
     DISCLAIMS ANY SUCH REPRESENTATION OR WARRANTY.

B.   To the extent permitted by law, Assignee shall be subrogated to Assignor's
     rights in and to representations, warranties and covenants given with
     respect to the Assets. Assignor hereby grants and transfers to Assignee,
     its successors and assigns, to the extent so transferable and permitted by
     law, the benefit of and the right to enforce the covenants, representations
     and warranties, if any, which Assignor is entitled to enforce with respect
     to the Assets.

C.   Assignee assumes and agrees to pay, perform, fulfill and discharge all
     claims, costs, expenses, liabilities and obligations accruing or relating
     to the owning, developing, exploring, operating or maintaining of the
     Assets or the producing, transporting and marketing of Hydrocarbons from
     the Assets, relating to periods before, on and after the Effective Date,
     including, without limitation, all obligations arising under the agreements
     covering or relating to the Assets.

D.   This Assignment binds and inures to the benefit of Assignor and Assignee
     and their respective successors and assigns.

E.   This Assignment may be executed in any number of counterparts, each of
     which shall be deemed to be an original instrument, and all of which
     together shall constitute but one instrument.

<PAGE>
     EXECUTED on the date contained in the acknowledgment of this instrument, to
be effective for all purposes as of the Effective Date.

     ASSIGNOR:
     ALTEX OIL CORPORATION

     By: /s/ Steven H. Cardin
        ---------------------
         Steven H. Cardin, President

                                 ACKNOWLEDGMENT
                                 --------------

     STATE OF COLORADO          )
                                ) ss.
     COUNTY OF DENVER           )

     The foregoing instrument was acknowledged before me this 9th day of
December 2005  by Steven H. Cardin, President of ALTEX OIL CORPORATION, a Utah
corporation, on behalf of such corporation.

     Witness my hand and official seal.

     My commission expires 6/23/07.

     /s/ Elizabeth L. Rutherford
     ---------------------------
     Notary Public

<PAGE>
     EXECUTED on the date contained in the acknowledgment of this instrument, to
be effective for all purposes as of the Effective Date.

     ASSIGNEE:
     CHAPARRAL ENERGY, LLC

     By: /s/ Mark A. Fischer
        --------------------
     Mark A. Fischer, President

                                 ACKNOWLEDGMENT
                                 --------------

     STATE OF TEXAS             )
                                ) ss.
     COUNTY OF HARRIS           )

     The foregoing instrument was acknowledged before me this 15th day of
December 2005  by Mark A. Fischer as President of Chaparral Energy, LLC, a LLC,
on behalf of said LLC.

     Witness my hand and official seal.

     My commission expires October 13, 2006

     /s/ Kathrin Morgan
     ------------------
     Notary PublicEXHIBIT 10.3

                     ASSIGNMENT, BILL OF SALE AND CONVEYANCE
                     ---------------------------------------

     THIS ASSIGNMENT, BILL OF SALE AND CONVEYANCE (this "Assignment"), dated
effective January 1, 2006 (the "Effective Date"), is from ALTEX OIL CORPORATION,
a Utah corporation whose address is PO Box 1057, Breckenridge, Colorado
80424-1057 ("Assignor") to Penroc Oil Corporation, PO Box 2769, Hobbs, NM
88241-5970 ("Assignee").

     For $10.00 and other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, Assignor hereby sells, assigns,
transfers, grants, bargains, conveys to Assignee all of Assignor's right, title
and interest, in and to the following (all of which are called the "Assets"):

1.   The oil and gas leases and other interests described in Exhibit A (the
     "Leases") insofar and only insofar as the Leases cover the Almond formation
     in the currently producing BH Federal 1 (also know as the BH Federal 10),
     BH Federal 2, BH Federal 3, and BH Federal 4 wells and cover the Mesaverde
     formation in the currently producing Champlin 337 G11 well described below
     and not any other or future wells or any other formations or depths (the
     "Lands"), and all oil, gas and other hydrocarbons, whether liquid or
     gaseous (the "Hydrocarbons") in, on or under or that may be produced from
     the Lands and the Wells.

2.   The oil and gas wells located on the Leases and Lands and described in
     Exhibit A (the "Wells"), and all personal property and equipment associated
     with the Wells as of the Effective Date.

3.   The rights, to the extent transferable, in and to all existing and
     effective unitization, pooling and communitization agreements, declarations
     and orders, to the extent that they relate to or affect any of the
     interests described in Paragraphs 1 and 2 or the production of Hydrocarbons
     from the Leases, the Lands and the Wells.

4.   The rights, to the extent transferable, in and to Hydrocarbon sales,
     purchase, gathering, transportation and processing contracts, operating
     agreements, partnership agreements, farmout agreements and other contracts,
     agreements and instruments relating to the interests described in
     Paragraphs 1, 2 and 3.

5.   All of the personal property, fixtures, improvements, permits, licenses,
     approvals, servitudes, rights-of-way, easements and other surface rights
     located on or used in connection with the properties and interests
     described in Paragraphs 1 through 4, to the extent that they are located on
     the Leases or Lands and are used in connection with the Wells.

6.   The files, records, data and information relating to the items described in
     Paragraphs 1 through 5, maintained by Assignor.

     TO HAVE AND TO HOLD the Assets unto Assignee and its successors and assigns
forever.

     This Assignment is made and accepted expressly subject to the following
terms and conditions:

A.   Assignor hereby excepts and reserves unto itself and its successors and
     assigns, all of Assignor's rights, titles and interests in the Leases not
     expressly conveyed herein.

B.   THIS ASSIGNMENT IS MADE WITHOUT ANY WARRANTY OR REPRESENTATION OF ANY KIND
     OR CHARACTER, WHETHER EXPRESS, IMPLIED OR STATUTORY, AND ASSIGNOR HEREBY
     DISCLAIMS ANY SUCH REPRESENTATION OR WARRANTY.

C.   To the extent permitted by law, Assignee shall be subrogated to Assignor's
     rights in and to representations, warranties and covenants given with
     respect to the Assets. Assignor hereby grants and transfers to Assignee,
     its successors and assigns, to the extent so transferable and permitted by
     law, the benefit of and the right to enforce the covenants, representations
     and warranties, if any, which Assignor is entitled to enforce with respect
     to the Assets.

D.   Assignee assumes and agrees to pay, perform, fulfill and discharge all
     claims, costs, expenses, liabilities and obligations accruing or relating
     to the owning, developing, exploring, operating or maintaining of the
     Assets or the producing, transporting and marketing of Hydrocarbons from
     the Assets, relating to periods before, on and after the Effective Date,
     including, without limitation, all obligations arising under the agreements
     covering or relating to the Assets.

<PAGE>
E.   This Assignment binds and inures to the benefit of Assignor and Assignee
     and their respective successors and assigns.

F.   This Assignment may be executed in any number of counterparts, each of
     which shall be deemed to be an original instrument, and all of which
     together shall constitute but one instrument.

     EXECUTED on the date contained in the acknowledgment of this instrument, to
be effective for all purposes as of the Effective Date.

     ASSIGNOR:
     ALTEX OIL CORPORATION

     By: /s/ Steven H. Cardin
        ---------------------
     Steven H. Cardin, President

                                 ACKNOWLEDGMENT
                                 --------------

     STATE OF COLORADO          )
                                ) ss.
     COUNTY OF DENVER           )

     The foregoing instrument was acknowledged before me this 9th day of
December 2005 by Steven H. Cardin, President of ALTEX OIL CORPORATION, a Utah
corporation, on behalf of such corporation.

     Witness my hand and official seal.

     My commission expires 6/23/07.

     /s/ Elizabeth L. Rutherford
     ---------------------------
     Notary Public

<PAGE>
     EXECUTED on the date contained in the acknowledgment of this instrument, to
be effective for all purposes as of the Effective Date.

     ASSIGNEE:
     PENROC OIL CORPORATION

     By: /s/ Mohammed Yamin Merchant
        ----------------------------
     Mohammed Yamin Merchant, President

                                 ACKNOWLEDGMENT
                                 --------------

     STATE OF TEXAS             )
                                ) ss.
     COUNTY OF HARRIS           )

     The foregoing instrument was acknowledged before me this 15th day of
December 2005 by Mohammed Yamin Merchant as President of Penroc Oil Corporation,
a corporation, on behalf of said corporation.

     Witness my hand and official seal.

     My commission expires October 13, 2006

     /s/ Kathrin Morgan
     ------------------
     Notary Public

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