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  Exhibit 10.7    
    

December 23,
2008

			
	Floyd Trujillo

Presco Western, LLC

5665 Flatiron Parkway

Boulder, CO 80301	 	 Re: Texon Contract No. CPE6866

Amendment No. 13

Customer Ref. No.

Various Kansas Leases—See Exhibit

        This Agreement shall serve to amend the above referenced contract and amendments thereto, if any, between Texon L.P. ("Buyer") and Presco
Western LLC ("Seller"). The following Special Provisions reflect the original terms and are updated to include the item(s) amended herein and all prior amendments, if any. Items amended by this
Agreement are described below. These updated Special Provisions and Texon L.P.'s General Provisions (Revision 3/08) constitute the entire Agreement between the parties. 

			
	ITEMS	 	 PRICE: Amended pricing as described below effective December 1, 2008.
	
 AMENDED	
 	
 EXHIBIT "A": Added the Juanita 5-M29-32-39, the Franzland Co. 7-B and the Pheasant Valley leases, Morton, Seward and Finney County, Kansas effective December 1, 2008.
	 	 	 EXHIBIT "A": Added all leases from Exhibits "B" and "C" effective December 1, 2008.
	

SPECIAL PROVISIONS
	
 QUALITY	
 	
 Kansas Common crude oil
	
 QUANTITY	
 	
 Equal to Seller's owned or controlled oil condensate production from the properties/leases described in the Exhibits attached hereto. Estimated to be 3,000 barrels per day. As additional wells are added to the
contract, and the volume increases, we will adjust the volume accordingly.
	
 PRICE	
 	
 Each calendar month's arithmetic average of the settlement prices for the Nearby Light Sweet crude oil futures contract (WTI) on the New York Mercantile Exchange (NYMEX) for each day the NYMEX settles the Nearby
WTI contract (Mere days only), plus or minus the NYMEX Roll (as defined below), less an adjustment of $4.37 per barrel.
	

 	
 	
 NYMEX Roll: The arithmetic average of the daily settlement price for "Light Sweet Crude Oil" front month futures contract reported by the New York Mercantile Exchange (NYMEX) during the Physical Month of
Delivery (the calendar month when the crude is delivered), excluding weekends and holidays, plus or minus the arithmetic average of the daily NYMEX settlement price for the prompt month, trading days only, when the Physical Month of Delivery is the
prompt month trading on NYMEX, less the arithmetic average of the daily NYMEX settlement price for the second month during the same period, trading days only, multiplied by .6667, plus the average of the daily NYMEX settlement price for the prompt
month, trading days only, when the Physical Month of Delivery is the prompt month trading on NYMEX, less the average of the daily NYMEX settlement price for the third month during the same period, trading days only, multiplied by .3333.
	

 	
 	
 In the event that the transportation cost and/or tariff changes during the term of this Agreement, Buyer reserves the right to revise the contract accordingly.
	
 DELIVERY	
 	
 Delivered into Buyer designated carriers from the properties/leases described in the Exhibits attached hereto.

			
	
 TERM	
 	
 Effective November 1, 2008 through April 30, 2009 and continuing month to month thereafter unless either party cancels with thirty (30) days prior written notice. Cancellation shall become effective on
the first day of the month following such notice period.
	

 	
 	
 Buyer shall pay Seller or their designee 100% of the amount due for crude oil purchased hereunder, excluding all applicable taxes, by wire transfer on the 20th day of the month following the month of delivery.
(See paragraph 3 of the General Provisions attached hereto.)
	

 	
 	
 Buyer shall deduct from amounts due Seller all applicable taxes and shall remit such taxes on Seller's behalf when due. Seller or their designee shall make all revenue distribution payments to all royalty interest
owners and any and all other persons who may have a right, title, interest, or claim to any part of the payments made by Buyer to Seller hereunder. SELLER AGREES TO PROTECT, INDEMNIFY AND HOLD BUYER HARMLESS FROM AND AGAINST ANY AND ALL CLAIMS,
DAMAGES, LOSSES, COSTS, ATTORNEY'S FEES, EXPENSES OR LIABILITY OF ANY NATURE WHICH BUYER MAY SUFFER BY REASON OF BUYER MAKING PAYMENTS AS HEREIN PROVIDED.

  
  

											
	 Texon L.P.	 	Presco Wester, LLC
	

 	
 	

 	
 	

 	
 	

 	
 	

 	
 	

 
	BY:	 	/s/ W.K. Jones

 	 	DATE: 1/21/09	 	BY:	 	/s/ Floyd Trujillo

 	 	DATE: 1/28/09
	 	 	W.K. Jones

Sr. Vice President, Crude Oil	 	 	 	 	 	Floyd Trujillo	 	 

  EXHIBIT A  

											
	LEASE NAME

 
	 	FIELD 	 	COUNTY 	 	STATE 	 	ADJUSTMENT 	 
	GCC 1-530	 	 	 	Finney	 	KS	 	 	(4.370000	)
	GCC 6-C30-23-33	 	 	 	Finney	 	KS	 	 	(4.370000	)
	GCH 4-D36-26-32	 	 	 	Finney	 	KS	 	 	(4.370000	)
	GCH 5-D36-26-32	 	 	 	Finney	 	KS	 	 	(4.370000	)
	Irene 1-1632	 	 	 	Finney	 	KS	 	 	(4.370000	)
	Jehle 1-1624	 	 	 	Finney	 	KS	 	 	(4.370000	)
	JLM Farms 1-827	 	 	 	Finney	 	KS	 	 	(4.370000	)
	JLM Farms 4-127-26-32	 	 	 	Finney	 	KS	 	 	(4.370000	)
	Larson 1-731	 	 	 	Finney	 	KS	 	 	(4.370000	)
	Pettz 1-531	 	 	 	Finney	 	KS	 	 	(4.370000	)
	Pheasant Valley 33-23S-32W	 	 	 	Finney	 	KS	 	 	(4.370000	)
	Ramsey 10-E28-23-32	 	 	 	Finney	 	KS	 	 	(4.370000	)
	Webdell 3-3	 	 	 	Finney	 	KS	 	 	(4.370000	)
	Barclay College 6-029-30-38	 	 	 	Grant	 	KS	 	 	(4.370000	)
	Bunn 1	 	 	 	Grant	 	KS	 	 	(4.370000	)
	Johnson 4-L	 	 	 	Grant	 	KS	 	 	(4.370000	)
	Johnson Heirs 1	 	 	 	Grant	 	KS	 	 	(4.370000	)
	Johnson Heirs 2	 	 	 	Grant	 	KS	 	 	(4.370000	)
	Lucas Trust 4-K29-30-38	 	 	 	Grant	 	KS	 	 	(4.370000	)
	Lucas Trust 5-M29-30-38	 	 	 	Grant	 	KS	 	 	(4.370000	)
	Nave 6-B (Sec 18, T30, R38)	 	 	 	Grant	 	KS	 	 	(4.370000	)
	Scherling W B 1-29	 	 	 	Grant	 	KS	 	 	(4.370000	)
	Scherling W B 2-29	 	 	 	Grant	 	KS	 	 	(4.370000	)
	Winter 13-M8-30-33	 	 	 	Grant	 	KS	 	 	(4.370000	)
	Winter 14-N8-30-33	 	 	 	Grant	 	KS	 	 	(4.370000	)
	Winter 15-M8.30-33	 	 	 	Grant	 	KS	 	 	(4.370000	)
	Schartz Foods 4-K7-30-38	 	Wildcat	 	Grant	 	KS	 	 	(4.370000	)
	Allen Trust No. 8	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Allen Trust No. 9	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Andrews Trust 9-C	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Anton 2-518	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Bergner 7-P17-28-34	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Black Luciene A 9	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Black Trusts 17-07-30-33	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Black Trusts 18-P7-30-33	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Black Trusts 20-D7-30-33	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Black Trusts 21-G7-30-33	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Black Trusts 23-E7-30-33	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Bond 5L	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Brennan 1	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Brennan Gas Unit 2	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Brookover EC 1A	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Cox 1-162	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Cox 1-8	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Cox 6-P2-28-33	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Davis 6-N17-30-32	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Diaden Farms 1-B2-29-33	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Diaden Farms 3-K15-30-32	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Diaden Farms 4-J15-30-32	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Diaden Farms 5-B15-30-32	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	E Hall 1-K16-30-32	 	 	 	Haskell	 	KS	 	 	(4.370000	)

											
	LEASE NAME

 
	 	FIELD 	 	COUNTY 	 	STATE 	 	ADJUSTMENT 	 
	E Hall 5-N16-30-32	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	E Hall 6-P16-30-32	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	E Hall 8-M16-30-32	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	E Hall 9-C16-30-32	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Earlene Black 1-817	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Edna Cox 1-138	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	EE & L Stalker 1-1430	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Eilerts 5-D17-30-32	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Elliot 28-M (SWLVU P10)	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Ellsaesser 1	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Ellsaesser 2	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Ellsaesser Gas Unit A 1	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	ELS Properties 1-1030	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Eric Bradley 1-17	 	 	 	Haskell	 	KS	 	 	(4370000	)
	Feight A 1-27	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Feight A 4-27	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	FeightA 5 Lower	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Feight A 5 Upper	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Feight A 6 (SWDW)	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Garner 1-1624	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Garner 11-J24-30-34	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Garner 12-124-30-34	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Garner 22-H24-30-34	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Grant Maurice 1-30	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Hall SG1	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Hall SG2	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Hoffman 3-019-30-32	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Hon 1-930	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	James Unit A A B 1	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Kenneth 5-E 14-78-33(S14T28R33)	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Kilgore 5-E33-29-39	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Kilgore Trust 9-H	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Koehn 5-F2-28-33	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Lavelette 1-C12-27-33	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	LC Black 1-417	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Luciene Black 10-17	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	McKinley 1-1519	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	McKinley 15-P19-30-33	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	McKinley 16-119-30-33	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Megan Janae 1-30	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Mertia Ammerman 1	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Mertia Ammerman 2	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Murphy 6-L27-29-32	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Nanninga Trust 1-430	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Nanninga Trust 34-E30-30-33	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	RB Garner 2	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Riphahn 13-035-28-34	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Roger Wilson 1-519	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Schnellbacher A-4	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Stalker 1-23 (Gas Unit)	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Stalker 19-C	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Stalker 33	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Stalker 34-L30-30-33	 	 	 	Haskell	 	KS	 	 	(4.370000	)

											
	LEASE NAME

 
	 	FIELD 	 	COUNTY 	 	STATE 	 	ADJUSTMENT 	 
	Stalker Eta! 28-130-30-33	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Stalker Etal 29-030-30-33	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Stalker Etal 30-K30-30-33	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Stalker Etal 31-A30-30-33	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Stalker Etal 32-H30-30-33	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	SWLVLU 112	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	SWLVLU 114	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	SWLVLU 117	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	SWLVLU 119	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	SWLVLU 121	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	SWLVLU 122	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	SWLVLU 123	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	SWLVLU P02	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	SWLVLU P03	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	SWLVLU P04	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	SWLVLU P07	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	SWLVLU P11	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	SWLVLU P12	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	SWLVLU P13	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	SWLVLU P14	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	SWLVLU P15	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	SWLVLU P18	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	SWLVLU P21	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	SWLVLU P22	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	SWLVLU P23	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	SWLVLU P24	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Walter E. Preedy B1	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Walter E. Preedy B3	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Watkins 2-N17-30-32	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Watkins Gas Un F-4	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Wilson Gas Unit F3	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Wilson-Dent Trust 27-F19-30-33	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Wright B 28	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Wright C Cl	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Wright GU B1	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Wyatt Trusts 9-N16-30-33	 	 	 	Haskell	 	KS	 	 	(4.370000	)
	Anton 1-21	 	Victory	 	Haskell	 	KS	 	 	(4.370000	)
	Black 22C (Sec 7, T30, R33W)	 	Victory	 	Haskell	 	KS	 	 	(4.370000	)
	Marie 1-21	 	Victory	 	Haskell	 	KS	 	 	(4.370000	)
	Poppe Trust 22-J17-30-33	 	Victory	 	Haskell	 	KS	 	 	(4.370000	)
	SWLVLU 8	 	Victory	 	Haskell	 	KS	 	 	(4.370000	)
	SWLVLU 9	 	Victory	 	Haskell	 	KS	 	 	(4.370000	)
	Fletcher 7-J21-23-37	 	 	 	Kearny	 	KS	 	 	(4.370000	)
	Kisel 1-1215-2	 	 	 	Kearny	 	KS	 	 	(4.370000	)
	Miles 1-1128	 	 	 	Kearny	 	KS	 	 	(4.370000	)
	BFC Warring Trust 2	 	 	 	Morton	 	KS	 	 	(4.370000	)
	Blackwell Al	 	 	 	Morton	 	KS	 	 	(4.370000	)
	BOWKER	 	 	 	Morton	 	KS	 	 	(4.370000	)
	Bowker Gas Unit B1 1-2	 	 	 	Morton	 	KS	 	 	(4.370000	)
	Dos Reatas 5-E26-32-40	 	 	 	Morton	 	KS	 	 	(4.370000	)
	Dos Reatas 6-M26-32-40	 	 	 	Morton	 	KS	 	 	(4.370000	)
	Green 4J S29-T32-R39	 	 	 	Morton	 	KS	 	 	(4.370000	)
	Hull 5-G30-32-39	 	 	 	Morton	 	KS	 	 	(4.370000	)

											
	LEASE NAME

 
	 	FIELD 	 	COUNTY 	 	STATE 	 	ADJUSTMENT 	 
	Johns 1-1324	 	 	 	Morton	 	KS	 	 	(4.370000	)
	Juanita 5-M29-32-39	 	 	 	Morton	 	KS	 	 	(4.370000	)
	Milbum 5-N28-31-39	 	 	 	Morton	 	KS	 	 	(4.370000	)
	Osborne B-3	 	 	 	Morton	 	KS	 	 	(4.370000	)
	Trahem 6-G20-31-39	 	 	 	Morton	 	KS	 	 	(4.370000	)
	Becker Trust 5	 	 	 	Seward	 	KS	 	 	(4.370000	)
	Becker Trust 6	 	 	 	Seward	 	KS	 	 	(4.370000	)
	Chandler Carroll 1-19	 	 	 	Seward	 	KS	 	 	(4.370000	)
	Franziand Co. 7-B 22-31S-33W	 	 	 	Seward	 	KS	 	 	(4.370000	)
	Hatfield Eta! Unit 5-J22-31-33	 	 	 	Seward	 	KS	 	 	(4.370000	)
	Lemert B H 1	 	 	 	Seward	 	KS	 	 	(4.370000	)
	Wendy Marie 1-30	 	 	 	Seward	 	KS	 	 	(4.370000	)
	Simpson Trust 5-J4-31-33	 	Victory	 	Seward	 	KS	 	 	(4.370000	)
	Abbey Michelle 1-35	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	Amanda Jill 1-36	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	Amber Michelle 1-34	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	Andrea Frances 1-21	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	Andrea Lyn 1-9	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	Benjamin Lee (Sec 25, T29S, R40W)	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	Brian Daniel 1-34	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	Christopher Jared 1-8	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	Collingwood 1-28	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	Esser 2-16	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	Federal Land Bank 4-21	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	Federal Land Bank 5-21	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	Fell Gas Unit 4A	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	Garay 6-J21-29-39	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	Jay Morris 1-8	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	Kayla Marie 1-2	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	Kaylee Brooks 1-35	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	KU 6-120-29-39	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	KU 7-J20-29-39	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	KU 8-P20-29-39	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	KU 9-P20-29-39	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	Lynn Stacy 1-22	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	McPherson College 4-E21-29-39	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	McPherson College 5-F21-29-39	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	Mitchell Trust 5-E23-29-40	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	R & L Farms 1-28	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	Sarah Jane 1-34	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	Shonn Gregory 1-35	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	Trent David 1-23	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	Wade Allen 1-36	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	Western Feed Yard 1-1133	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	Western Feed Yard 2-1433	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	Williams 1-L21-29-39	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	Williams 2-L21-29-39	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	Williams 3-K21-29-39	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	Williams 4-L21-29-39	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	Wilson Unit 1	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	Yardley Frederick 1-25	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	Yashell Shirin 1-35	 	 	 	Stanton	 	KS	 	 	(4.370000	)
	LTW Trust 12-E26-29-39	 	Big Bow	 	Stanton	 	KS	 	 	(4.370000	)

											
	LEASE NAME

 
	 	FIELD 	 	COUNTY 	 	STATE 	 	ADJUSTMENT 	 
	Elliott Spencer 1	 	Liverpool Cemetery	 	Stanton	 	KS	 	 	(4.370000	)
	Josline B-2	 	 	 	Stevens	 	KS	 	 	(4.370000	)
	Swalar Al	 	 	 	Stevens	 	KS	 	 	(4.370000	)
	Swalar B1	 	 	 	Stevens	 	KS	 	 	(4.370000	)

QuickLinks

Exhibit 10.7QuickLinks
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  Exhibit 10.8    
    

[PLAINS MARKETING, L.P. LETTERHEAD] 

 Crude Oil Purchase Contract  

			
	CONTRACT NO. 4863-1003	 	May 05, 2005

This
contract by and between Ellora Operating, L.P. ("Ellora"), with an address of 5480 Valmont, Suite 350, Boulder, CO 80301—and  Plains Marketing, L.P., ("PMLP"), covering the sale and delivery by Ellora and the purchase and receipt by PMLP of the hereinafter specified oil is
entered into in accordance with the following feints and conditions: 

					
	1.	 	 TERM:	 	 The primary term shall be a period of one month from November 01, 2004 to December 01, 2004.
	

 	
 	
 	
 	
 The term shall be automatically extended for a Secondary Term month to month thereafter unless notice of non-renewal is given by either party hereto upon not less than thirty (30) days advance written notice to the
other party.
	
 2.	
 	
 QUALITY	
 	

 
	 	 	 AND	 	 
	 	 	 CRUDE	 	 
	 	 	 TYPE:	 	 Rocky Mountain Sweet crude oil.
	
3.	
 	
 QUANTITY:	
 	
 An amount equal to actual lease receipts from lease(s) indicated on Exhibit "A" attached hereto and made a part hereof. (Approximately 26 barrels per day).
	
4.	
 	
 DELIVERY:	
 	
 Shall be made at the well tankage into PMLP's designated transportation facilities.
	
5.	
 	
 PRICE:	
 	
 For the crude oil sold and delivered hereunder, PMLP agrees to pay a price per barrel equal to SPLLC Colorado Southeastern Crude Oil Posting, capped 44.9ø API gravity. For pricing purposes, deliveries will be
calculated on equal daily quantities.
	
6.	
 	
 PAYMENT:	
 	
 Payment shall be made by check on or about the twentieth (20th) day of-the month following the month of delivery.

PMLP's
General Provisions dated February 01, 2001 are incorporated herein by reference and made a part hereof. To the extent of any conflict between the provisions herein and the General
Provisions, the provisions herein shall govern. 

If
Division Orders have been issued to Ellora by PMLP and executed by Ellora covering the wells on Exhibit A, the Division Orders are incorporated herein and made a part hereof. The provisions
of this Agreement, including but not limited to those relating to term, rights of termination, price and otherwise, shall be applicable and govern, notwithstanding any provision in the Division Orders
to the contrary. 

1

 

All
invoices and notices given pursuant to this agreement shall be in writing, telex or faxed and shall be deemed delivered when received by the other party at the address specified below: 

Notices
and all other correspondence to PMLP shall be mailed or faxed as follows: 

Plains
Marketing, L.P.

10 Desta Drive, Suite 200E

Midland, Texas 79705

Phone: (432) 683-9622

Fax: (432) 683-0849 

Invoices
shall be mailed or faxed to PMLP as follows: 

Plains
Marketing, L.P.

333 Clay Street Suite1600

Houston, Texas 77002

Phone: (713) 646-4100

Fax: (713) 646-4114 

Notices
and all other correspondence to Ellora shall be mailed or faxed as follows: 

Ellora
Operating, L.P.

5480 Valmont, Suite 350

Boulder, CO 80301

Phone:(303) 444 8881

Fax:(303) 417 1000 

							
	 BUYER	 	 SELLER
	

Plains Marketing, LP.	
 	
Ellora Operating, LP.
	By Plains Marketing GP Inc.

Its General Partner	 	 	 	 
	

Agreed and accepted this 19 day of June, 2005.	
 	
Agreed and accepted this 6th day of June, 2005.
	
 By:	
 	
/s/ MARK L. THOMAS

 	
 	
By:	
 	
/s/ CHANDRA C. BAESLER

 
	
 Name:	
 	
Mark L. Thomas	
 	
Name:	
 	
Chandra C. Baesler
	
 Title:	
 	
Director, West Texas Region and Attorney in Fact	
 	
Title:	
 	
Manager-Land/Marketing

jac

Log No.: 17049 

2

 

														
	Plains Marketing L.P.	 	 	 	 	 	 	 	 	 	 	 	May 05, 2005
	 	
Plains Contract:	
 	
4863-1003	
 	
Effective 03-01-2005	
 	
 Exhibit "A"	
 	
 	
 	
 Partner contract:	
 	
 
	

 	
 	

 	
 	

 	
 	

 	
 	

 	
 	

 	
 	
Page 1 of 1

   

																								
	PM

Lease

‡=Intact

 
	 	Lease 	 	Operator 	 	County/

Parish 	 	State 	 	Price

Code* 	 	Price

Method** 	 	Applicable

Premium

or

(Deduct) 	 	Percent 	 	Gravity 	 	State

Lease 
	 	014910	 	SNIFF E	 	ELLORA OPERATING LP	 	BENT	 	CO	 	S2078	 	EDQ	 	$	0.0000	 	 	100.00000	%	Capped 44.90 API	 	 
	
 	
049340	
 	
SNIFF LATERAL DRIP STATION	
 	
ELLORA OPERATING LP	
 	
BENT	
 	
CO	
 	
S2078	
 	
EDO	
 	
$	

0.0000	
 	
 	
100.00000	
%	
Capped 44.90 API	
 	

 
	
 	
049341	
 	
MCCLAVE SEPARATOR	
 	
ELLQRA OPERATING LP	
 	
KIOWA	
 	
CO	
 	
S2078	
 	
EDO	
 	
$	

0.0000	
 	
 	
100.00000	
%	
Capped 44.90 API	
 	

 
	
 	
074223‡	
 	
LOS ANIMAS GATHERING COMPRESSO	
 	
ELLORA OPERATING LP	
 	
BENT	
 	
CO	
 	
S2078	
 	
EDQ	
 	
$	

0.0000	
 	
 	
100.00000	
%	
Capped 44.90 API	
 	

 
	
 	
106918	
 	
STARK A	
 	
ELLORA OPERATING LP	
 	
BENT	
 	
CO	
 	
S2078	
 	
EDO	
 	
$	

0.0000	
 	
 	
100.00000	
%	
Capped 44.90 API	
 	

 
	
 	
123195	
 	
WOLLERT D #1	
 	
ELLORA OPERATING LP	
 	
BENT	
 	
CO	
 	
S2078	
 	
EDO	
 	
$	

0.0000	
 	
 	
100.00000	
%	
Capped 44.90 API	
 	

 
	
 	
128645	
 	
TEMPLE.B	
 	
ELLORA OPERATING LP	
 	
BENT	
 	
CO	
 	
S2078	
 	
EDQ	
 	
$	

0.0000	
 	
 	
100.00000	
%	
Capped 44.90 API	
 	

 

	(*)
	S2078
PLAINS MARKETING LP-COLORADO SOUTHEASTERN

	(**)
	EQUAL
DAILY QUANTITIES 

3

QuickLinks

Exhibit 10.8

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00157-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00157-of-00352.parquet"}]]