Leasehold Acquisition Agreement

Exhibit 10.7

LEASEHOLD ACQUISITION AGREEMENT

     This LEASEHOLD ACQUISITION AGREEMENT (the “Agreement”) is made this April 1, 2005, by and between Trey Resources, Inc., an Oklahoma corporation (“Trey”), and COG Oil & Gas LP, a Texas limited partnership (“COG”), as follows:

     WHEREAS, Navigator Oil & Minerals, Inc. (“NOM”) has assigned to Trey an undivided 25% interest (the “Subject Interest”) in the oil and gas leases described on Exhibit “A” hereto (the “Leases”) and in the lands described therein (the “Lands”);

     WHEREAS, Trey has the right to operate all oil and gas drilling and other activities on the Leases (the “Operating Rights”); and

     WHEREAS, Trey has agreed hereby to sell, assign and convey to COG and COG has agreed hereby to purchase and accept the Subject Interest in the Leases and the Operating Rights subject to the terms of this Agreement.

     NOW THEREFORE, for and in consideration of the agreement and terms contained in this Agreement and other good and valuable consideration, the receipt and sufficiency of which are acknowledged, Trey and COG agree as follows:

	1.		Purchase and Sale. Trey agrees to sell, transfer, convey and deliver, and COG agrees to purchase and receive, the Subject Interest in the Leases and the Operating Rights, as of and effective April 1, 2005 (the “Effective Date”)
	2.		Purchase Price. COG shall pay Trey $400 per Net Leasehold Acre (defined below) comprising the Subject Interest in the Leases and Lands, or $2,474,400; provided that if COG determines and demonstrates in the future to Trey’s reasonable satisfaction that the Subject Interest in the Leases is subject to a Defect (defined below), Trey shall promptly, but in any event within thirty (30) days, reimburse COG $400 for each Net Leasehold Acre subject to a Defect or shall within such time period cure any such Defect to COG’s reasonable satisfaction. As used herein, “Net Leasehold Acre” means an acre of land subject to one of the Leases, proportionately reduced to the extent that Trey owns less than the entire undivided leasehold estate in such land and/or such Lease covers less than the entire mineral estate. As used herein, “Defect” means (a) the Subject Interest in the Leases and Lands conveyed to COG pursuant hereto comprises less than a total of 24,744.41 Net Leasehold Acres; (b) the Subject Interest in the Leases or Lands is subject to any (i) claim, demand, liability, circumstance, condition, requirement, or obligation which is reasonably expected to materially burden, impair or diminish the ownership, development, operation or value thereof after the Effective Date, (ii) preferential right to purchase or consent to assignment provision, or (iii) mortgage, lien, security interest or encumbrance (other than a proportionate share of the 2% overriding royalty interest conveyed by NOM to Trey); (c) any Lease is subject to a joint operating agreement or similar agreement regarding operations; or (d) Trey owns and has conveyed hereunder to COG less than a 75% net revenue interest with respect to its interest in any of the Leases.

	3.		Assignment. The assignment of the Subject Interest in the Leases from Trey to COG shall be made pursuant to a Partial Assignment of Oil and Gas Leases in the form attached hereto as Exhibit “A”.
	4.		Future Interests. Trey hereby assigns to COG any rights it has or may have at any time to acquire any additional or other interests in the Leases, Lands or the AMI (defined below) from NOM or any other party, “AMI” means the lands and Area of Mutual Interest described in that certain Letter Agreement dated October 1, 2004, among Trey, NOM and RPC Operating Inc., as amended by that certain Letter Agreement dated December 15, 2004 among such parties.
	5.		Operations. COG may transfer the Operating Rights to its sole General Partner, COG Operating LLC.
	6.		Governing Law. This Agreement and any documents delivered pursuant hereto shall be governed by the laws of the State of Texas, without giving effect to principles of conflicts of law that would result in the application of the laws of another jurisdiction. Venue for any proceeding in connection with this Agreement shall be in a court of competent jurisdiction located in Midland County, Texas.
	7.		Entire Agreement. This Agreement and the documents to be executed hereunder, and the exhibits attached hereto constitute the entire agreement between the parties pertaining to the subject matter hereof and supersede all prior agreements, understandings, negotiations and discussions, whether oral or written, of the parties pertaining to the subject matter hereof. No supplement, amendment, alteration, modification or waiver of this Agreement shall be binding unless executed in writing by the parties and specifically referencing this Agreement.

Executed as of the date first above written.

		Trey Resources, Inc.
		By: /s/ David M. Thomas III
				David M. Thomas III
				President
		COG Oil & Gas LP   by COG Operating LLC,   its general partner
		By:		/s/ David W. Copeland
				David W. Copeland
				Vice President

EXHIBIT “A”

THE STATE OF TEXAS		§
		§
COUNTRY OF CULBERSON & REEVES		§

PARTIAL ASSIGNMENT OF OIL AND GAS LEASES

     WHEREAS, TREY RESOURCES, INC., an Oklahoma corporation, of P. O. Box 50272, Midland, Texas 79710, is the present owner and holder of an undivided twenty-five percent (25%) interest in the Oil and Gas Leases described in Exhibit “A” which is attached hereto and made a part hereof.

     NOW, THEREFORE, for and in consideration of Ten Dollars (and other good and valuable consideration) the receipt of which is hereby acknowledged, TREY RESOURCES, INC. (hereinafter referred to as “Assignor”) does hereby bargain, sell, transfer, assign and convey unto COG OIL & GAS LP, 550 W. Texas, Suite 1300, Midland, Texas 79701 (hereinafter referred to as “Assignee”) an undivided twenty-five percent (25%) interest in and to the Oil and Gas Leases described in Exhibit “A” (hereinafter referred to as the “Leases”).

     This Assignment is made and accepted subject to a proportionate part of (i) all of the terms, conditions, covenants and obligations contained in the Leases, and (ii) that certain 2% overriding royalty interest assigned by Navigator Oil & Minerals, Inc. to Trey Resources, Inc. pursuant to Assignment of Overriding Royalty Interest dated effective April 1, 2005.

     This Assignment is made subject to the terms of that certain Leasehold Acquisition Agreement dated April 1, 2005, between Assignor and Assignee.

     Assignor agrees to warrant and forever defend the title to the leasehold interests herein conveyed to Assignee, its successors and assigns forever, against any person whomsoever claiming or to claim the same or any party thereof by, through or under Assignor, but not otherwise.

     The terms and conditions of this Assignment shall be binding upon and inure to the benefit of Assignor and Assignee and their respective successors and assigns.

     IN WITNESS WHEREOF, this instrument is executed and effective this 1st day of April, 2005.

THE STATE OF TEXAS		§
		§
COUNTY OF MIDLAND		§

     This instrument was acknowledged before me on the ____ day of April, 2005, by David M. Thomas III, President of TREY RESOURCES, INC., an Oklahoma corporation, on behalf of said corporation.

				Notary Public — State of Texas

Exhibit “A”
Assignment dated 4/1/05
Trey Resources to Concho
Culberson Co., Texas

RECORDED

FILE NUMBER

GRANTOR

GRANTEE

DESCRIPTION

GROSS ACRES

NET ACRES

DATE

VOL. /PAGE

42-109-000142-00A

Maria L. Tamez, dealing in her sole and separate property

Navigator Oil & Minerals, Inc.

717.40 acres, being All Section 34, Block 60, Twp. 5, Culberson Co., Texas.

717.40

239.1333

October 6, 2004

83 Oil-Gas/ 777

42-109-000142-00B

Peggy Close, dealing in her sole and separate property

Navigator Oil & Minerals, Inc.

717.40 acres, being All Section 34, Block 60, Two. 5, Culberson Co., Texas.

717.40

239.1333

October 6, 2004

83 Oil-Gas/ 780

42-109-000142-00C

Henry L. Hook, dealing in his sole and separate property

Navigator Oil & Minerals, Inc.

717.40 acres, being All Section 34, Block 60, Twp. 5, Culberson Co., Texas.

717.40

239,1333

October 6, 2004

83 Oil-Gas/ 783

42-109-000143-00A

Dell Shettie, a widow

Navigator Oil & Minerals, Inc.

Block 60, TWP. 7, T&P R.R. Co. Survey

10,983.15

306.6200

October 6, 2004

84 Oil-Gas/ 179

Section 24: All, 596.00 acres, more or less

Block 91, Public School Land Survey

Section 12: All, 640 acres, more or less.

Section 16: All, 652.72 acres, more or less.

Section 17: N/2, 326.58 acres, more or less.

Section 17: S/2, 326.58 acres, more or less.

Section 20: W/2, 326.23 acres, more or less.

Section 22: All, 651.57 acres, more or less.

Section 23: All, 651.11 acres, more or less.

Block 60, Public School Land Survey

Section 8: W/2, S/E 4,480 acres, more or less.

Section 16: S/2, NW/4,S/2 NE/4, 560 acres, more or less

Section 17: All, 640 acres, more or less.

Section 18: All, 640 acres, more or less.

Block 89, Public School Land Survey

Section 2: All, 640 acres, more or less.

Section 3: All, 640 acres, more or less.

Section 10: All, 640 acres, more or less.

Section 11: All, 640 acres, more or less.

Section 22: All, 652.36 acres, more or less.

Block 61, Public School Land Survey

Section 23: All, 640 acres, more or less.

Section 24: All, 640 acres, more or less.

Culberson County, Texas

Page 1 of 36
4/1/2005
Trey-AOGL-AORR-Exhibits-050331

Exhibit “A”
Assignment dated 4/1/05
Trey Resources to Concho
Culberson Co., Texas

RECORDED

FILE NUMBER

GRANTOR

GRANTEE

DESCRIPTION

GROSS ACRES

NET ACRES

DATE

VOL. /PAGE

42-109-000143-00B

Ray Kesey, dealing in his sole and separate property

Navigator Oil & Minerals, Inc.

Block 60, TWP. 7. T6P R.R. Co. Survey

10,983.15

613.24

October 29, 2004

83 Oil-Gas/ 786

Section 24: All, 596.00 acres, more or less

Block 91, Public School Land Survey

Section 12: All, 640 acres, more or less.

Section 16: All, 652.72 acres, more or less.

Section 17: N/2, 326.58 acres, more or less.

Section 17: S/2, 326.58 acres, more or less.

Section 20: W/2,326.23 acres, more or less.

Section 22: All, 651.57 acres, more or less.

Section 23: All, 651.11 acres, more or less.

Block 60. Public School Land Survey

Section 8: W/2, S/E 4, 480 acres, more or less.

Section 16: S/2, NW/4,S/2 NE/4, 560 acres, more or less

Section 17: All, 640 acres, more or less.

Section 18: All, 640 acres, more or less.

Block 89. Public School Land Survey

Section 2: All, 640 acres, more or less.

Section 3: All, 640 acres, more or less.

Section 10: All, 640 acres, more or less.

Section 11: All, 640 acres, more or less.

Section 22: All, 652.36 acres, more or less.

Block 61, Public School Land Survey

Section 23: All, 640 acres, more or less.

Section 24: Ail, 640 acres, more or less.

Culberson County, Texas

Page 2 of 36
4/1/2005
Trey-AOGL-AORR-Exhibits-050331

Exhibit “A”
Assignment dated 4/1/05
Trey Resources to Concho
Culberson Co., Texas

RECORDED

FILE NUMBER

GRANTOR

GRANTEE

DESCRIPTION

GROSS ACRES

NET ACRES

DATE

VOL. /PAGE

42-109-000143-00C

Roy Whiteside, dealing in his sole and separate property

Navigator Oil & Minerals, Inc.

Block 60, TWP. 7, T&P R.R. Co. Survey

10,983.15

1 ###-###-####

October 6, 2004

84 Oil-Gas/ 182

Section 24: All, 596.00 acres, more or less

Block 91, Public School Land Survey

Section 12: All, 640 acres, more or less.

Section 16: All, 652.72 acres, more or less.

Section 17: N/2, 326.58 acres, more or less.

Section 17: S/2, 326.58 acres, more or less.

Section 20: W/2, 326.23 acres, more or less.

Section 22: All, 651.57 acres, more or less.

Section 23: All, 651.11 acres, more or less.

Block 60, Public School Land Survey

Section 8: W/2, S/E 4, 480 acres, more or less.

Section 16: S/2, NW/4,S/2 NE/4, 560 acres, more or less

Section 17: All, 640 acres, more or less.

Section 18: All, 640 acres, more or less.

Block 89, Public School Land Survey

Section 2: All, 640 acres, more or less.

Section 3: All, 640 acres, more or less.

Section 10: All, 640 acres, more or less.

Section 11: All, 640 acres, more or less.

Section 22: All, 652.36 acres, more or less.

Black 61, Public School Land Survey

Section 23: All, 640 acres, more or less.

Section 24: All, 640 acres, more or less.

Culberson County, Texas

Page 3 of 36
4/1/2005
Trey-AOGL-AORR-Exhibits-050331

Exhibit “A”
Assignment dated 4/1/05
Trey Resources to Concho
Culberson Co., Texas

RECORDED

FILE NUMBER

GRANTOR

GRANTEE

DESCRIPTION

GROSS ACRES

NET ACRES

DATE

VOL. /PAGE

42-109-000143-00D

C. J. Kesey, dealing in his sole and separate property

Navigator Oil & Minerals, Inc.

Block 60, TWP. 7, T&P R.R. Co. Survey

10,983.15

613.2400

November 3, 2004

84 Oil-Gas/ 267

Section 24: All, 596.00 acres, more or less

Block 91, Public School Land Survey

Section 12: All, 640 acres, more or less.

Section 16: All, 652.72 acres, more or less.

Section 17: N/2, 326.58 acres, more or less.

Section 17: S/2, 326.58 acres, more or less.

Section 20: W/2, 326.23 acres, more or less.

Section 22: All, 651.57 acres, more or less.

Section 23: All, 651,11 acres, more or less.

Block 60, Public School Land Survey

Section 8: W/2, S/E 4, 480 acres, more or less.

Section 16: S/2, NW/4,S/2 NE/4, 560 acres, more or less.

Section 17: All, 640 acres, more or less.

Section 18: All, 640 acres, more or less.

Block 89, Public School Land Survey

Section 2: All, 640 acres, more or less.

Section 3: All, 640 acres, more or less.

Section 10: All, 640 acres, more or less.

Section 11: All, 640 acres, more or less.

Section 22: All, 652.36 acres, more or less.

Block 61, Public School Land Survey

Section 23: All, 640 acres, more or less.

Section 24: All, 640 acres, more or less.

Culberson County, Texas

Page 4 of 36
4/1/2005
Trey-AOGL-AORR-Exhibits-050331

Exhibit “A”
Assignment dated 4/1/05
Trey Resources to Concho
Culberson Co., Texas

RECORDED

FILE NUMBER

GRANTOR

GRANTEE

DESCRIPTION

GROSS ACRES

NET ACRES

DATE

VOL. /PAGE

42-109-000143-00E

Wells Fargo Bank, N.A., Trustee (Bourg)

Navigator Oil & Minerals, Inc.

Block 60, TWP. 7, T&P R.R. Co. Survey

10,983.15

122.6500

December 14, 2004

85 Oil-Gas/ 751

Section 24: All, 596.00 acres, more or less

Block 91, Public School Land Survey

Section 12: All, 640 acres, more or less.

Section 16: All, 652.72 acres, more or less.

Section 17: N/2, 326.58 acres, more or less.

Section 17: S/2, 326.58 acres, more or less.

Section 20: W/2, 326.23 acres, more or less.

Section 22: All, 651.57 acres, more or less.

Section 23: All, 651.11 acres, more or less.

Block 60, Public School Land Survey

Section 8: W/2, S/E 4,480 acres, more or less.

Section 16: S/2, NW/4, S/2 NE/4, 560 acres, more or less

Section 17: All, 640 acres, more or less.

Section 18: All, 640 acres, more or less.

Block 89, Public School Land Survey

Section 2: All, 640 acres, more or less.

Section 3: All, 640 acres, more or less.

Section 10: All, 640 acres, more or less.

Section 11: All, 640 acres, more or less.

Section 22: All, 652.36 acres, more or less.

Block 61, Public School Land Survey

Section 23: All, 640 acres, more or less.

Section 24: All, 640 acres, more or less,

Culberson County, Texas

Page 5 of 36
4/1/2005
Trey-AOG L-AORR-Exhibits-050331

Exhibit “A”
Assignment dated 4/1/05
Trey Resources to Concho
Culberson Co., Texas

RECORDED

FILE NUMBER

GRANTOR

GRANTEE

DESCRIPTION

GROSS ACRES

NET ACRES

DATE

VOL. /PAGE

42-109-000143-00G

Steven G. Shaddock

Navigator Oil & Minerals, Inc.

Block 60, TWP. 7, T&P R.R. Co. Survey

10,983.15

0.0000

December 4, 2004

85 Oil-Gas/ 729

Section 24: All, 596.00 acres, more or less

Block 91, Public School Land Survey

Section 12: All, 640 acres, more or less.

Section 16: All, 652.72 acres, more or less.

Section 17: N/2, 326.58 acres, more or less.

Section 17: S/2, 326.58 acres, more or less.

Section 20: W/2, 326.23 acres, more or less.

Section 22: All, 651.57 acres, more or less.

Section 23: All, 651.11 acres, more or less.

Block 60, Public School Land Survey

Section 8: W/2, S/E 4, 480 acres, more or less.

Section 16: S/2, NW/4,S/2 NE/4, 560 acres, more or less

Section 17: All, 640 acres, more or less.

Section 18: All, 640 acres, more or less.

Block 89, Public School Land Survey

Section 2: All, 640 acres, more or less.

Section 3: All, 640 acres, more or less.

Section 10: All, 640 acres, more or less.

Section 11: All, 640 acres, more or less.

Section 22: All, 652.36 acres, more or less.

Block 61, Public School Land Survey

Section 23: All, 640 acres, more or less.

Section 24: All, 640 acres, more or less.

Culberson County, Texas

Page 6 of 36
4/1/2005
Trey-AOGL-AORR-Exhibits-050331

Exhibit “A”
Assignment dated 4/1/05
Trey Resources to Concho
Culberson Co., Texas

RECORDED

FILE NUMBER

GRANTOR

GRANTEE

DESCRIPTION

GROSS ACRES

NET ACRES

DATE

VOL. /PAGE

42-109-000143-00H

McCulliss Resources Co., Inc.

Navigator Oil & Minerals, Inc.

Block 60, TWP, 7, T&P R.R. Co. Survey

10,983.15

0.0000

December 4, 2004

85 Oil-Gas/ 734

Section 24: All, 596.00 acres, more or less

Block 91, Public School Land Survey

Section 12: All, 640 acres, more or less.

Section 16: All, 652.72 acres, more or less.

Section 17: N/2, 326.58 acres, more or less.

Section 17: S/2, 326.58 acres, more or less.

Section 20: W/2, 326.23 acres, more or less.

Section 22; All, 651.57 acres, more or less.

Section 23: All, 651.11 acres, more or less.

Block 60, Public School Land Survey

Section 8: W/2, S/E 4, 480 acres, more or less.

Section 16: S/2, NW/4,S/2 NE/4, 560 acres, more or less.

Section 17: All, 640 acres, more or less.

Section 18: All, 640 acres, more or less.

Block 89, Public School Land Survey

Section 2: All, 640 acres, more or less.

Section 3: All, 640 acres, more or less.

Section 10: All, 640 acres, more or less.

Section 11: All, 640 acres, more or less.

Section 22: All, 652.36 acres, more or less.

Block 61, Public School Land Survey

Section 23: All, 640 acres, more or less.

Section 24: All, 640 acres, more or less.

Culberson County, Texas

Page 7 of 36
4/1/2005
Trey-AOGL-AORR-Exhibits-050331

Exhibit “A”
Assignment dated 4/1/05
Trey Resources to Concho
Culberson Co., Texas

RECORDED

FILE NUMBER

GRANTOR

GRANTEE

DESCRIPTION

GROSS ACRES

NET ACRES

DATE

VOL. /PAGE

42-109-000143-00I

George G. Vaught, Jr.

Navigator Oil & Minerals, Inc.

Block 60, TWP. 7, T&P R.R. Co. Survey

10,983.15

0.0000

December 4, 2004

85 Oil-Gas/ 724

Section 24: All, 596.00 acres, more or less

Block 91, Public School Land Survey

Section 12: All, 640 acres, more or less.

Section 16: All, 652.72 acres, more or less.

Section 17: N/2, 326.58 acres, more or less.

Section 17: S/2, 326.58 acres, more or less.

Section 20: W/2, 326.23 acres, more or less.

Section 22: All, 651.57 acres, more or less.

Section 23: All, 651.11 acres, more or less.

Block 60, Public School Land Survey

Section 8: W/2, S/E 4, 480 acres, more or less.

Section 16: S/2, NW/4,S/2 NE/4, 560

acres, more or less

Section 17: All, 640 acres, more or less.

Section 18: All, 640 acres, more or less.

Block 89, Public School Land Survey

Section 2: All, 640 acres, more or less.

Section 3: All, 640 acres, more or less.

Section 10: All, 640 acres, more or less.

Section 11: All, 640 acres, more or less.

Section 22: All, 652.36 acres, more or less.

Block 61, Public School Land Survey

Section 23: All, 640 acres, more or less.

Section 24: All, 640 acres, more or less.

Culberson County, Texas

Page 8 of 36
4/1/2005
Trey-AOGL-AORR-Exhibits-050331

Exhibit “A”
Assignment dated 4/1/05
Trey Resources to Concho
Culberson Co., Texas

RECORDED

FILE NUMBER

GRANTOR

GRANTEE

DESCRIPTION

GROSS ACRES

NET ACRES

DATE

VOL. /PAGE

42-109-000143-00J

Charles A. Weinacht

Navigator Oil & Minerals, Inc.

Block 60, TWP. 7, T&P R.R. Co. Survey

10,983.15

613.24

December 4, 2004

85 Oil-Gas/ 719

Section 24: All, 596.00 acres, more or less

Block 91, Public School Land Survey

Section 12: All, 640 acres, more or less.

Section 16: All, 652,72 acres, more or less.

Section 17: N/2, 326.58 acres, more or less.

Section 17: S/2, 326.58 acres, more or less.

Section 20: W/2, 326,23 acres, more or less.

Section 22: All, 651.57 acres, more or less.

Section 23: All, 651.11 acres, more or less.

Block 60, Public School Land Survey

Section 8: W/2, S/E 4, 480 acres, more or less.

Section 16: S/2, NW/4,S/2 NE/4, 560 acres, more or less

Section 17: All, 640 acres, more or less.

Section 18: All, 640 acres, more or less.

Block 89, Public School Land Survey

Section 2: All, 640 acres, more or less.

Section 3: All, 640 acres, more or less.

Section 10: All, 640 acres, more or less.

Section 11: All, 640 acres, more or less.

Section 22: All, 652.36 acres, more or less.

Block 61, Public School Land Survey

Section 23: All, 640 acres, more or less.

Section 24: All, 640 acres, more or less.

Culberson County, Texas

Page 9 of 36
4/1/2005
Trey-AOGL-AORR-Exhibits-050331

Exhibit “A”
Assignment dated 4/1/05
Trey Resources to Concho
Culberson Co., Texas

RECORDED

FILE NUMBER

GRANTOR

GRANTEE

DESCRIPTION

GROSS ACRES

NET ACRES

DATE

VOL. /PAGE

42-109-000143-00K

Bottom Investment Co., LTD

Navigator Oil & Minerals, Inc.

Block 60, TWP, 7, T&P R.R. Co. Survey

10,983.15

204.41

December 14, 2004

85 Oil-Gas/ 860

Section 24: All, 596.00 acres, more or less

Block 91, Public School Land Survey

Section 12: All, 640 acres, more or less.

Section 16: All, 652.72 acres, more or less.

Section 17: N/2, 326.58 acres, more or less.

Section 17: S/2, 326.58 acres, more or less.

Section 20: W/2, 326.23 acres, more or less.

Section 22: All, 651.57 acres, more or less.

Section 23: All, 651.11 acres, more or less.

Block 60, Public School Land Survey

Section 8: W/2, S/E 4, 480 acres, more or less.

Section 16: S/2, NW/4,S/2 NE/4, 560 acres, more or less

Section 17: All, 640 acres, more or less.

Section 18: All, 640 acres, more or less.

Block 89, Public School Land Survey

Section 2: All, 640 acres, more or less.

Section 3: All, 640 acres, more or less.

Section 10: All, 640 acres, more or less.

Section 11: All, 640 acres, more or less.

Section 22: All, 652.36 acres, more or less.

Block 61, Public School Land Survey

Section 23: All, 640 acres, more or less.

Section 24: All, 640 acres, more or less.

Culberson County, Texas

Page 10 of 36
4/1/2005
Trey-AOGL-AORR-Exhibits-050331

Exhibit “A”
Assignment dated 4/1/05
Trey Resources to Concho
Culberson Co., Texas

RECORDED

FILE NUMBER

GRANTOR

GRANTEE

DESCRIPTION

GROSS ACRES

NET ACRES

DATE

VOL. /PAGE

42-109-000143-00L

Victoria Trading Co., L.L.C.

Navigator Oil & Minerals, Inc.

Block 60, TWP. 7, T&P R.R. Co. Survey

10,983.15

204.41

December 14, 2004

85 Oil-Gas/ 748

Section 24: All, 596.00 acres, more or less

Block 91, Public School Land Survey

Section 12: All, 640 acres, more or less.

Section 16: All, 652.72 acres, more or less.

Section 17: N/2, 326.58 acres, more or less.

Section 17: S/2, 326.58 acres, more or less.

Section 20: W/2, 326.23 acres, more or less.

Section 22: All, 651.57 acres, more or less.

Section 23: All, 651.11 acres, more or less.

Block 60, Public School Land Survey

Section 8: W/2, S/E 4, 480 acres, more or less.

Section 16: S/2, NW/4,S/2 NE/4, 560 acres, more or less

Section 17: All, 640 acres, more or less.

Section 18: All, 640 acres, more or less.

Block 89, Public School Land Survey

Section 2: All, 640 acres, more or less.

Section 3: All, 640 acres, more or less.

Section 10: All, 640 acres, more or less.

Section 11: All, 640 acres, more or less.

Section 22: All, 652.36 acres, more or less.

Block 61, Public School Land Survey

Section 23: All, 640 acres, more or less.

Section 24: All, 640 acres, more or less.

Culberson County, Texas

Page 11 of 36
4/1/2005
Trey-AOGL-AORR-Exhibits-050331

Exhibit “A”
Assignment dated 4/1/05
Trey Resources to Concho
Culberson Co., Texas

RECORDED

FILE NUMBER

GRANTOR

GRANTEE

DESCRIPTION

GROSS ACRES

NET ACRES

DATE

VOL. /PAGE

42-109-000143-00M

Joe B. Pritchett

Navigator Oil & Minerals, Inc.

Block 60, TWP. 7, T&P R.R. Co. Survey

10,983.15

204.41

December 14, 2004

85 Oil-Gas/ 745

Section 24: All, 596.00 acres, more or less

Block 91, Public School Land Survey

Section 12: All, 640 acres, more or less.

Section 16: All, 652.72 acres, more or less.

Section 17: N/2, 326.58 acres, more or less.

Section 17: S/2, 326.58 acres, more or less.

Section 20: W/2, 326.23 acres, more or less.

Section 22: All, 651.57 acres, more or less.

Section 23: All, 651.11 acres, more or less.

Block 60, Public School Land Survey

Section 8: W/2, S/E 4, 480 acres, more or less.

Section 16: S/2, NW/4,S/2 NE/4, 560 acres, more or less

Section 17: All, 640 acres, more or less.

Section 18: All, 640 acres, more or less.

Block 89, Public School Land Survey

Section 2: All, 640 acres, more or less.

Section 3: All, 640 acres, more or less.

Section 10: All, 640 acres, more or less.

Section 11: All, 640 acres, more or less.

Section 22: All, 652.36 acres, more or less.

Block 61, Public School Land Survey

Section 23: All, 640 acres, more or less.

Section 24: All, 640 acres, more or less.

Culberson County, Texas