Common Contracts

EXCHANGE AND REGISTRATION RIGHTS AGREEMENT dated as of May 25, 2007 among ABRAXAS PETROLEUM CORPORATION ABRAXAS ENERGY PARTNERS, L.P. and THE PURCHASERS NAMED IN THIS AGREEMENT

Exchange and Registration Rights Agreement • July 13th, 2007 • Abraxas Energy Partners LP • New York

• Contract Type
  Exchange and Registration Rights Agreement
• Filed
  July 13th, 2007
• Company
  Abraxas Energy Partners LP
• Jurisdiction
  New York

This EXCHANGE AND REGISTRATION RIGHTS AGREEMENT ("Agreement") is made and entered into as of the 25th day of May, 2007, by and among Abraxas Petroleum Corporation, a Nevada corporation ("Parent"), Abraxas Energy Partners, L.P., a Delaware limited partnership (the "Partnership") and each of the persons listed on Schedule 1 attached to this Agreement (each a "Purchaser" and collectively the "Purchasers").

EXCHANGE AND REGISTRATION RIGHTS AGREEMENT dated as of May 25, 2007 among ABRAXAS PETROLEUM CORPORATION ABRAXAS ENERGY PARTNERS, L.P. and THE PURCHASERS NAMED IN THIS AGREEMENT EXCHANGE AND REGISTRATION RIGHTS AGREEMENT

Exchange and Registration Rights Agreement • May 31st, 2007 • Abraxas Petroleum Corp • Crude petroleum & natural gas • New York

• Contract Type
  Exchange and Registration Rights Agreement
• Filed
  May 31st, 2007
• Company
  Abraxas Petroleum Corp
• Industry
  Crude petroleum & natural gas
• Jurisdiction
  New York

This EXCHANGE AND REGISTRATION RIGHTS AGREEMENT (“Agreement”) is made and entered into as of the 25th day of May, 2007, by and among Abraxas Petroleum Corporation, a Nevada corporation (“Parent”), Abraxas Energy Partners, L.P., a Delaware limited partnership (the “Partnership”) and each of the persons listed on Schedule 1 attached to this Agreement (each a “Purchaser” and collectively the “Purchasers”).