U.S. DEPARTMENT OF THE INTERIORBUREAU OF LAND MANAGEMENT
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Corporate Name Change & Merger Index

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Company Name
(OLD NAME)		Changed or Merged To
(NEW NAME)		Date of
BLM WY Decision
or Cover Memo		BLM State Office that Issued Decision
Occidental Oil and Gas ( USA), Inc.

Cities Service Oil and Gas Corp
Amended Decision-Additional Lease

06/06/1986
06/12/1986

WY
WY

Ocean Energy IncDevon Louisiana Corp08/20/2003NM
Ocean Energy IncSeagull Energy Corporation02/12/2003NM
Ocean Energy Resources IncOcean Energy Inc
(Amended Decision)		11/27/2001
02/12/2003		.
NM
Odessa Natural Corporation

EPX Company(Original Decision)

Amended Decision-ROW

04/21/1981
08/12/1981
10/06/1981		NM
WY
WY
Oil Devl Co of TXSanta Fe Energy Company05/04/1995WY
Oilix Industries, IncAdobe Oil and Gas Corporation02/28/1983WY
Okie Crude CompanyWOC Acqstn Company01/23/1995WY
Oklahoma Industrial Energies IncNew Cambridge Corp06/18/1985WY
Oklahoma Pacific LtdPosse Energy Ltd02/03/1997MT
Olson, Emil, Estate ofFern E Olson02/12/2003WY
Omni Resources, Inc.

Tresor Petroleum, Inc.

12/07/1981

WY

ONG Exploration, Inc.

ONEOK Exploration Company

06/20/1986

WY

OPCO Production Company

Wichita River Oil Corp
Amended Decision-Additional Lease
Amended Decision-Additional Lease

05/13/1988
10/13/1988
11/04/1988

WY
WY
WY

Oregon Short Line Railroad CoUnion Pacific Railroad Co01/16/2004WY
Oryx Energy CompanyKerr-McGee O&G, Onshore LLC08/23/1999ES*
Osborn, William B., Estate ofRowena Simpson Osborn06/12/2003WY
Overland Trail & Cattle Co LLC, The

The Overland Trail Cattle Co LLC

01/12/2005

WY

Overthrust Pipeline Company

Questar Overthrust Pipeline Company
(Rights-of-Way Grants Only)

WithdrawnWY
Oxford Consolidated IncOxford Exploration Co10/18/1993WY
Oxoco Expl & Prod IncHawthorne Oil & Gas Corp04/04/1988WY
Oxtex IncHawthorne Oil & Gas Corp04/04/1988WY
Oxy Petroleum Inc.

Cities Service Oil and Gas Corp

Amended Decision-Additional Lease

02/10/1986
06/06/1986
06/12/1986

CA
WY
WY

* Eastern States Office, Springfield VA

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Last updated: 08-18-2008