Amendment to Settlement Agreement and Release among JPMorgan Chase Bank, MOSH Holding, Dagger-Spine Hedgehog Corp., and the Wiegand Group

Exhibit 10.2

December 7, 2007

By Facsimile

Mr. Robert L. Ketchand

Boyer & Ketchand

9 Greenway Plaza, Suite 3100

Houston, Texas 77046

Mr. John H. Kim

The Kim Law Firm

4309 Yoakum Blvd., Suite 2000

Houston, Texas 77006

Mr. Francis I. Spagnoletti

Spagnoletti & Co.

401 Louisiana, 8th Floor

Houston, Texas 77002

Mr. David J. Beck

Mr. Alistair B. Dawson

Beck, Redden & Secrest, L.L.P.

One Houston Center

1221 McKinney St., Suite 4500

Houston, Texas 77010

Mr. Melvyn L. Douglas

Melvyn L. Douglas P.C.

5500 Preston Road, Suite 393

Dallas, Texas  75205-2676

Mr. Charles A. Sharman

Nine Greenway Plaza, Suite 3040

Houston, Texas 77046

Re:          Case No. 2006-01984; MOSH Holding, L.P. v. Pioneer Natural Resources Company, Pioneer Natural Resources USA, Inc., Woodside Energy (USA) Inc., and JPMorgan Chase Bank, N.A., as Trustee of the Mesa Offshore Trust; In the 334th Judicial District Court of Harris County, Texas

Settlement Agreement and Release executed on or about December 3, 2007

Dear Counsel:

This letter agreement is an amendment and modification to the Settlement Agreement and Release (the “Agreement”) by and among JPMorgan Chase Bank, N.A. individually and as Trustee of the Mesa Offshore Trust, MOSH Holding, L.P., Dagger-Spine Hedgehog Corporation, and the Wiegand Group.  Unless otherwise defined, all capitalized terms used herein shall have the meaning stated in the Agreement.  The parties agree that these modifications are necessary and proper because the Court scheduled the hearing on the parties Joint Motion for Approval of Settlement Agreement (“Joint Motion”) on January 16, 2008, which is a date different than the January 11, 2008 date anticipated in the Settlement Agreement.

The parties, by and through their undersigned counsel, agree to the following modifications to the Agreement:

The parties acknowledge that while this letter agreement does not materially change the Agreement, the modifications to the Agreement are subject to Section 9(i) of the Agreement, which requires the parties hereto to petition the Court with notice to counsel for the parties to the Litigation of any modification of the terms of procedures required under the Agreement.  To comply with Section 9(i), the parties agree to file a supplement to their Motion for Approval of Settlement Agreement that identifies modifications contained herein and seeks the Court’s review and approval of the modification.  The Supplement to the Joint Motion shall include a revised proposed Order and shall be served on all parties to the Litigation.

The undersigned counsel have authority to enter into this letter agreement on behalf of their respective clients.

CLS/dp

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