Wyoming
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Corporate Name Change & Merger Index
# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
| Company Name (OLD NAME) | Changed or Merged To (NEW NAME) | Date of BLM WY Decision or Cover Memo | BLM State Office that Issued Decision |
|---|---|---|---|
| AA Development Corporation | AA Energy Corp | 02/11/1985 | WY |
AA Energy Corp | AMR Energy Corp | 02/11/1985 10/29/1985 | WY |
| Aberdeen American Petro | Aberdeen Petro (USA) Inc | 04/10/1990 | WY |
| Abraxas Production Co | Abraxas Petroleum Corp | 11/30/1999 | WY |
| Ackerman, R.J | Ackerman, Phyllis L | 10/23/1991 | WY |
| Adobe Oil & Gas Corp | Adobe Resources Corp (Amended Decision) (Amended Decision) | 03/06/1986 05/09/1986 12/10/1986 | WY WY WY |
| Adobe Petroleum Corp | Adobe Resources Corp (Amended Decision) | 05/15/1987 05/04/1995 | WY WY |
| Adobe Resources Corp | Santa Fe Energy Resources Inc | 05/04/1995 | WY |
| Adolph Coors Brewing Company | Molson Coors Brewing Company | 08/27/2007 12/19/2007 | CO WY |
| AEC Gathering Services (USA) Inc | EnCana Gathering Services (USA) Inc | 05/23/2002 | MT |
| AEC Gulf of Mexico Inc | EnCana Gulf of Mexico Inc | 05/23/2002 | MT |
| AEC International (USA) Inc | EnCana International (USA) Inc | 05/23/2002 | MT |
| AEC Marketing (USA) Inc | EnCana Marketing (USA) Inc | 05/23/2002 | MT |
| AEC Oil & Gas (USA) Inc | EnCana Oil & Gas (USA) Inc | 05/23/2002 | MT |
| AEC Oil & Gas Co Ltd | EnCana Oil & Gas Co Ltd | 05/23/2002 | MT |
| AEC Oil & Gas Partnership | EnCana Oil & Gas Partnership | 05/23/2002 | MT |
| AEC Pipelines (USA) Inc | EnCana Pipelines (USA) Inc | 05/23/2002 | MT |
| AEC Storage & Hub Services Inc | EnCana Gas Storage Inc | 05/23/2002 | MT |
| AEC West Ltd | Encana Pipelines Ltd | 05/23/2002 | MT |
| AEC Pipelines Ltd | EnCana Pipelines Ltd | 05/23/2002 | MT |
| AGM Corp | Diamond Shamrock | 03/18/1987 | WY |
Ahrens, Oma B | Oma B. Ahrens Estate to Bart Patrick Yates as successor-in-interest | 03/03/2006 | WY |
| Airtouch Communications Inc | Vodaphone Airtouch PLC | 02/24/2004 | WY |
| Airtouch Communications Inc | Vodaphone America Asia Inc | 02/24/2004 | WY |
| AKI Oil and Gas Corporation | C&K Petroleum Inc | 02/18/1981 | NM |
| Alberta Energy Co Ltd | PanCanadian Energy Corp | 05/23/2002 | MT |
| Alenco Oil & Gas ND Inc | AEC Oil & gas USA Inc | 11/16/2001 | WY |
| Alene Oil Co | Tenkay Resources, Inc. | 12/18/1989 | WY |
| Alliance Exploration & Prod Co | Allco Exploration Company | 08/04/1982 | WY |
| Alpetco Inc | McAlester Fuel Co | 04/29/1977 07/08/1977 | MT WY |
| Alta Energy Corp | Devon Energy Oper Corp | 04/10/1995 | WY |
Altex Resources Company | Altex Energy Corporation (New Mexico Decision, oil & gas leases only) (Wyoming cover memorandum, oil & gas leases only) |
|
|
| Amacan Resources Corp | Spire International Corp | 01/02/1997 | MT |
| Ambrose Lee, Jr. | Estate of Ambrose Lee, Jr., Austin R. Lee, Se. Executor | 07/11/2008 | WY |
| Amaricen General Partnership | Amaricen Holdings, L.P. | 10/12/2007 | WY |
| Amax Oil & Gas Inc | Union Pacific O&G Co | 01/18/1995 03/30/1995 | WY NM |
| Amax Petroleum Corp | Nemidco, Inc. | 12/29/1994 | WY |
| Amber American Resources Inc | American Banner Res Inc | 06/18/1980 | WY |
Amcana Oil Corporation | I.C. Gas Amcana Amended Decision-Additional Lease | 12/12/1984 02/13/1985 | WY WY |
| Amco Oil Corporation | Associated Royalty Company | 08/16/1973 | WY |
Amerac Energy Corporation | Southern Minerals Corporation Montana Notice (Oil and Gas Leases Only) Wyoming Cover Memorandum (Oil & Gas Leases Only) | 05/19/2008 |
WY |
| Amerada Hess Corporation | Hess Corporation (Oil & Gas Leases Only) | 07/11/2006 | MT |
| Amerada Petroleum Corp | Amerada Hess Corp | 10/20/1969 | WY |
| American Cometra, Inc | Pearlstone Energy Partners LLC | 10/21/2005 | MT |
| American Exploration Co | Louis Dreyfus Natural Gas Corp (Amended Decision) (Amended Decision) (Amended Decision) | 07/29/1998 08/06/1998 01/10/2007 01/23/2007 | WY WY MT WY |
| American Energy Co | Meahger O&G, Prop Inc | 03/14/1998 | WY |
| American Minerals Mgmt Inc | American Res Mgmt Corp (Amended Decision) (CO State Office Decision) | 03/10/1975 01/23/1976 04/04/1977 | WY WY CO |
| American National Petroleum Company | Goodrich Petroleum of LA | 11/04/1999 | WY |
| American Natural Gas Prod Co | ANR Production Co | 10/14/1980 | WY |
| American Petrofina Company of Texas | Fina Oil & Chemical Co | 06/24/1986 05/11/1987 10/11/1990 | WY WY WY |
| American Petrofina Inc | Fina Inc | 05/07/2002 | MT |
| American Petrofina Marketing Inc | American Petrofina Company of Texas (Certificate Only) | 06/28/1985 | WY |
| American Prod Ptnrshp Ltd-III | American Prod Ptnrship III-Ltd | 06/21/1991 | WY |
| American Prod Ptnshp Ltd IV | American Prod Pntnrshop-IV Ltd | 06/21/1994 | WY |
| American Quasar Petro Co of NM | Wolervine Expl Co of Delaware | 10/16/1987 | WY |
| Americomm Resources Corp | Empire Petro Corp | 10/25/2001 | WY |
| Amerox Acquisition Corp | Austral Oil Company | 01/10/2007 01/23/2007 | MT WY |
| Aminoil Inc | Phillips Oil Company | 06/04/1985 | WY |
| Aminoil Resources Inc | Aminoil USA Inc | 02/15/1977 | WY |
| Aminoil USA Inc | Aminoil Inc (Amended Decision) | 02/07/1984 08/22/1985 | WY WY |
| Amistad Land & Cattle Co., Inc. | Spike Box Land & Cattle Company, Inc. | 08/05/2008 08/22/2008 | NM WY |
| Amoco Production Company | BP America Production Co | 01/16/2002 | WY |
| AMR Energy Corp | TOGA Petroleum Company | 08/27/1986 | WY |
| Anderman Oils LLC | Anderman Oils Ltd (Amended Decision) | 10/10/1997 07/02/1998 | WY WY |
| Anderman Oils Wyoming, Inc. | Heritage Energy Resources, Inc | 10/21/2005 | WY |
| Anderman Operating Company | Anderman/Smith Operating Co | 01/20/1988 | WY |
| Anderson, Georgia, Estate of | Georgia F. Anderson Trust, James H. Anderson, trustee | 06/25/2003 | WY |
| Andover Oil Company | Santa Fe Minerals Inc | 05/02/1995 | WY |
| Ansbro Petroleum Company, LLC | Anschutz Exploration Corporation (Colorado Notice- Oil & Gas Leases Only) Anschutz Exploration Corporation (Wyoming Cover Memorandum Oil & Gas Leases Only) | 05/28/2008 06/02/2008 | CO WY |
| Anschutz Corporation Inc, The | The Anschutz Corporation | 12/12/1972 | WY |
| Anschutz Western Corp, et al (Anschutz Colorado Corp, Anschutz Gold Coast Corp, Anschutz Permian Corp, Anschutz Western Corp, Anschutz Williston Basin Corp, Anschutz Wyoming Corp) | Anschutz Exploration Corp | 11/21/2002 | CO |
| AnSon Partners Limited Partnership | Chesapeake Merger II Corp. | 08/22/2008 | WY |
| AnSon Production Corporation | Chesapeake Merger II Corp. | 08/22/2008 | WY |
| Antelope Coal Company | Antelope Coal LLC | Pending | WY |
| Antelope Gas Products Co | Antelope Production Co | 09/26/1984 | WY |
| Antlers Enterprises Inc | Simba Energy Corp | 04/23/2001 | NM |
| Apache Energy Inc | Apache Energy and Minerals Company | 04/14/1980 | WY |
| Apache Exploration Corporation | Apexco, Inc | 08/14/1973 | WY |
| APD Company | APD Energy Company, LP | 07/14/1988 | WY |
| Apexco, Inc. | Natomas North America, Inc. | 03/23/1978 | WY |
| APX Corp | Anadarko Petro Corp | 09/30/1992 | WY |
| APX Western Corp | Anadarko Petro Corp | 09/30/1992 | WY |
| Aquarius Drilling Corporation | Aquarius II Incorporated | 06/10/1982 | WY |
| Aquitane Oil Corporation | Elf Aquitaine Inc Amended Decision-Added Lease Amended Decision-Added Lease | 03/07/1978 04/03/1978 10/23/1979 | WY WY WY |
| Arapaho Petro Inc | Intoil Inc | 04/22/1992 | WY |
| Arapaho Energy Inc | Arapaho Petro Inc | 04/22/1992 | WY |
| Arch Mineral Corp. | Arch Coal, Inc. | 08/13/2004 | WY |
| Arch of Wyoming, Inc | Arch of Wyoming LLC | 09/10/1999 | WY |
| Arch Oil & Gas Company | Coseka Res (USA) Ltd | 11/04/1988 | WY |
| Arch Petroleum, Inc. | Pogo Petroleum Company | 03/27/2006 | WY |
| Argent Ene Inc | Woods Research & Development Corp | 04/16/1992 | WY |
| Ashland Oil & Refining Company | Ashland Oil Inc | 06/08/1970 | WY |
| Asterik Inc | Montex Exploration Co | 06/24/1986 | WY |
| Atlantic Refining Company | Atlantic Richfield Company | 02/25/1987 | WY |
| Austral Oil Company | American Exploration Company (Oil and Gas Leases Only) | 01/10/2007 01/23/2007 | MT WY |
| Avance Oil & Gas Company, Inc. | Amax Petroleum Corp | 05/13/1982 | WY |
| Aviara Energy Corp | Hunt Petroleum (AEC) Inc | 08/26/2002 | CO |
| Axem-Blackbird LLC | Blackbird LLC | 05/25/2005 | WY |
| Axem-Blubell LLC | Westport Acquisition LLC | 05/25/2005 | WY |
| Axem-JCEC LLC | Westport Acquisition LLC | 05/25/2005 | WY |
| Axem Energy Co | Westport Oil & Gas Company Inc | 05/25/2005 | WY |
| Axem Energy LLC | Westport Acquisition LLC | 05/25/2005 | WY |
| Axem Production LLC | Westport Acquisition LLC | 05/25/2005 | WY |
| Axem Resources Inc | Westport Oil & Gas Company Inc | 10/24/1997 | CO |
| Aztec Energy Corp | Noarko Resources Inc (Amended Decision-Additional Leases) (Amended Decision-Additional Leases) | 12/29/1983 08/28/1984 04/15/1985 | WY WY WY |
| Aztec Oil & Gas Co | Southland Royalty Company | 01/27/1978 02/01/1978 05/24/1978 | CO WY NM |
| Aztec Resources Corporation | WEPCO Energy Company | 05/01/1987 | WY |
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