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SIERRA GEOPHYSICS INC
Acquired by Halliburton in May 1989.



FIRST CALGARY PETROLEUMS LIMITED
Acquired by ENI SpA in November 2008.



FOCUS ENERGY TRUST
Merged with Enerplus Resources Fund in February 2008.



NETHERFIELD ENERGY CORPORATION
Amalgamated with Netherfield Energy Corporation in 1999 to form Antrim Energy Inc.



GAWLER RESOURCES LIMITED
Merged with Elixir Petroleum Limited in late 2007.



EAST PARIS PETROLEUM DEVELOPMENT LTD
Acquired by Elixir Petroleum Limited in February 2010.



SEVEN STARS ENERGY CORPORATION
Joint venture in Tajikistan of Tethys Petroleum Ltd through subsidiary Tethys Tajikistan Limited (TTL) 51% and Sangam Limited 49% with TTL as the operations manager.



ENTERRA ENERGY TRUST
Trust converted to corporation named Equal Energy Ltd in June 2010.



MARLIN PERMIAN LP
Operating joint venture of Marlin Energy LLC and GE Energy Financial Services.



RIMROCK RESOURCES INC
Operating subsidiary of G B Coolidge Inc.



MONTANA HEARTLAND LLC
Operating subsidiary of United Energy Corporation.



SEAMGAS INDONESIA PT
Jointly-owned company of Bumi Resources and Westside Corp Ltd which has prepared a project definition study to identify coal seam gas resources at the KPC mine site in Kalimantan.



KAPPA RESOURCES COLOMBIA LIMITED
Acquired by Pacific Rubiales Energy Corp. for US $168 million in September 2008.



ARROW ENERGY LIMITED
Changed name to Kallisto Energy Corporation in October 2009.



MND E&P MAROC LIMITED
Operating subsidiary of MND Exploration and Production Limited in Morocco.



RAMCO ENERGY PLC
Name changed to SeaEnergy PLC in September 2009.



EDA OIL LIMITED
Acquired by Petromin PNG Holdings Limited in October 2007; now operating subsidiary holding 20.5% of the State's interest in the PDL 5 Moran petroleum project in Southern Highlands.



KERR-MCGEE OIL UK LTD
Oil & gas operations acquired by AP Moeller - Maersk in August 2005 for almost $3 billion.



LOCHARD ENERGY LTD UK
Operating subsidiary of Rheochem Ltd. in the North Sea.



VERENEX ENERGY INC
Acquired by Libyan Investment Authority in January 2010 for $317 million (Canadian).



RONDO PETROLEUM INC
Acquired by Petrobank Energy & Resources Ltd. in March 2010.



PETROVIETNAM INVESTMENT DEVELOPMENT COMPANY
Merged with PetroVietnam Exploration Production Corporation in May 2007.



BERKANA ENERGY CORPORATION
Acquired by Quatro Resources Inc. in January 2008.



UNBRIDLED ENERGY CORPORATION
Acquired by Altima Resources Limited in February 2010.



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