0001104659-04-016112 Sample Contracts

AND PLAN OF MERGER Among Clayton Williams Energy, Inc. (“Parent”), CWEI-SWR, Inc. (“Merger Sub”) And Southwest Royalties, Inc. (“Company”) May 3, 2004

Agreement and Plan of Merger • June 3rd, 2004 • Clayton Williams Energy Inc /De • Crude petroleum & natural gas • Delaware

• Contract Type
  Agreement and Plan of Merger
• Filed
  June 3rd, 2004
• Company
  Clayton Williams Energy Inc /De
• Industry
  Crude petroleum & natural gas
• Jurisdiction
  Delaware

This Agreement and Plan of Merger (this “Agreement”) is made and entered into as of the 3rd day of May, 2004, by and among Clayton Williams Energy, Inc., a Delaware corporation (“Parent”); CWEI-SWR, Inc., a Delaware corporation (“Merger Sub”) and a wholly-owned subsidiary of Parent; and Southwest Royalties, Inc., a Delaware corporation (the “Company”).