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SKYTOP BREWSTER COMPANY
Acquired by National Oilwell Varco in 1999.



RYERSON OIL & GAS LTD
Acquired by Maxx Petroleum Limited in 1993.



S & K OIL COMPANY
See Kahan & Associates, Inc.



S & N WELL SERVICING LIMITED
Acquired by Basic Energy Services Inc. in July 1997.



SSR INTERNATIONAL LTD
Acquired by Varco International Inc. in September 1996



PETROGEN CORPORATION
Changed name to Pluris Energy Group Inc in 2006.



SHELL VENEZUELA HYDROCARBONS LIMITED
Dissolved in January 1996.



SABREWEST OIL & GAS LTD
Amalgamated into Maple Leaf Energy Inc in August 1995.



SAFEWAY WELL SERVICES LIMITED
Acquired by Ensign Energy Services Inc. in 1999.



SALEM INVESTMENT COMPANY
Acquired by DI Industries before 1998



ADAIR INTERNATIONAL OIL & GAS INC
Name changed to Energy Development Company - ENDEVCO in 2003



WELLORE ENERGY INC
Amalgamated with a subsidiary of Cabre Exploration Limited.



SAMEDAN OIL CORPORATION
Merged with Noble Energy Inc in December 2002



SAMSON ENERGY COMPANY LIMITED PARTNERS
See Samson Investment Company



SAMSON GAS PRODUCING COMPANY
See Samson Investment Company



SAMSON PRODUCTION SERVICES COMPANY
See Samson Investment Company



SAMSON SECURITIES COMPANY
See Samson Investment Company



SAN PATRICIO CORP
Acquired by Pioneer Drilling Company in 2001



SANDS PETROLEUM AB
Name changed to Lundin Oil AB in April 1998. See Lundin Petroleum AB.



SANTA FE ENERGY PARTNERS LP
see Santa Fe Energy Resources Inc.



SANTA FE ENERGY RESOURCES INC
Merged with Snyder Oil Corporation in May 1999; name changed to Santa Fe Snyder Corporation.



ADOBE ROYALTY INC
Merged into Santa Fe Energy Resources Inc in July 1995



ADOBE RESOURCES CORPORATION
Merged into Santa Fe Energy Resources in May 1992



SANTA FE SNYDER CORPORATION
Merged with Devon Energy Corp in August 2000



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800-829-2002