Acquired by Tyco International Ltd in 1996

Amalgamated by 1463072 Alberta Ltd in July 2009. See Paramount Energy Trust.

Acquired by Ember Resources Inc. in September 2008.

Acquired by Great Plains Exploration Inc. in May 2008.

Changed name to Aban Offshore Limited.

Acquired by XTO Energy Inc in June 2008 for $4.19 billion.

Acquired by W & T Offshore Inc. in August 2006.

Merged with Transglobal Oil Corporation in June 2006.

Operating subsidiary of BlueCrest Energy.

Reorganized as Cequence Energy Ltd in May 2009.

Acquired by Sibir Energy plc in 1999.

Acquired by Daylight Resources Trust in August 2009 for $530 million (Canadian).

50/50 joint venture partner with Shell Salym Development BV in Salym Petroleum Development NV.

50/50 joint venture partner with Evikhon OAO NK in Salym Petroleum Development NV.

Owns the electricity transmission and distribution networks of Singapore; appointed SP PowerGrid to manage and maintain assets through a long-term Transmission System Management Services Agreement.

Manages Singapore's electricity and gas transmission and distribution networks on behalf of parent Singapore Power Ltd, see Singapore Power Ltd for contacts.

Reorganized in April 2005 into 7 companies with functional responsibilities of Trading (1), Generation (1), Transmission (1) and Distribution (4).

Acquired by Pitkin Petroleum plc in November 2005, along with subsidiary Vietnam Americal Exploration Inc. - VAMEX.

Acquired by Pitkin Petroleum plc in November 2005.

Name changed to Maersk Drilling in August 2008.

Operating subsidiary of Pan Pacific Petroleum NL with 15% interest in Vietnam's offshore Block 07/03.

See Galp Energia SGPS SA. Refinery located in Matosinhos, Portugal.

Changed name to Donkel Oil & Gas LLC in 2007

Operating subsidiary of BlueCrest Energy.