0001141185-05-000086 Sample Contracts

Dated September 2005 KERR-MCGEE NORTH SEA (U.K.) LIMITED TALISMAN NORTH SEA LIMITED

Kerr McGee Corp /De • November 9th, 2005 • Crude petroleum & natural gas

• Company
  Kerr McGee Corp /De
• Filed
  November 9th, 2005
• Industry
  Crude petroleum & natural gas

Dated 6th August 2005 KM DENMARK OVERSEAS APS CENTRICA CANADA LIMITED

Agreement • November 9th, 2005 • Kerr McGee Corp /De • Crude petroleum & natural gas

• Contract Type
  Agreement
• Filed
  November 9th, 2005
• Company
  Kerr McGee Corp /De
• Industry
  Crude petroleum & natural gas

Dated 7 August 2005 KM DENMARK OVERSEAS APS ALNERY NO. 2524 LIMITED KERR-MCGEE CORPORATION

Agreement • November 9th, 2005 • Kerr McGee Corp /De • Crude petroleum & natural gas

• Contract Type
  Agreement
• Filed
  November 9th, 2005
• Company
  Kerr McGee Corp /De
• Industry
  Crude petroleum & natural gas

Dated 6th August 2005 KERR-MCGEE NORTH SEA (U.K.) LIMITED CENTRICA RESOURCES LIMITED

Agreement • November 9th, 2005 • Kerr McGee Corp /De • Crude petroleum & natural gas

• Contract Type
  Agreement
• Filed
  November 9th, 2005
• Company
  Kerr McGee Corp /De
• Industry
  Crude petroleum & natural gas

Kerr-McGee North Sea (U.K.) Limited Ninian House Crawpell Road Altens Aberdeen AB12 3LG.

Kerr McGee Corp /De • November 9th, 2005 • Crude petroleum & natural gas

• Company
  Kerr McGee Corp /De
• Filed
  November 9th, 2005
• Industry
  Crude petroleum & natural gas

We refer to the sale and purchase agreement executed on 6th August 2005 between Kerr-McGee North Sea (U.K.) Limited (“Kerr-McGee”) and Centrica Resources Limited (“Centrica”) in respect of Kerr-McGee’s interests in the Buckland Field (the “Buckland SPA”) and the sale and purchase agreement executed on 6th August 2005 between Kerr-McGee North Sea (U.K.) Limited and Centrica Resources Limited in respect of Kerr-McGee’s interests in the Skene Field (the “Skene SPA”).