Common Contracts

Exhibit 4.6 FORM OF SENIOR INDENTURE ENCORE ACQUISITION COMPANY

Indenture • July 10th, 2003 • Eap Energy Inc • Crude petroleum & natural gas • New York

• Contract Type
  Indenture
• Filed
  July 10th, 2003
• Company
  Eap Energy Inc
• Industry
  Crude petroleum & natural gas
• Jurisdiction
  New York

1 EXHIBIT 4.1 FORM OF SENIOR INDENTURE

Indenture • August 30th, 2001 • Acs Trust I • Services-computer processing & data preparation • New York

• Contract Type
  Indenture
• Filed
  August 30th, 2001
• Company
  Acs Trust I
• Industry
  Services-computer processing & data preparation
• Jurisdiction
  New York

USA EDUCATION, INC. Issuer and THE CHASE MANHATTAN BANK Trustee FORM OF INDENTURE

Indenture • September 18th, 2000 • Usa Education Inc • Personal credit institutions • New York

• Contract Type
  Indenture
• Filed
  September 18th, 2000
• Company
  Usa Education Inc
• Industry
  Personal credit institutions
• Jurisdiction
  New York