U.S. DEPARTMENT OF THE INTERIORBUREAU OF LAND MANAGEMENT
Wyoming
 
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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
PG & E Gas Supply CompanyNGC Energy Company07/30/1987WY
PG&E Res CoDALEN Res O&G Co11/18/1994WY
P&O Falco, Inc.

UPG Falco
    Decision Corrected

10/17/1985
02/06/1986

WY
WY

P&O Falco, Inc.

UPG, Inc.

02/06/1986

WY

P&O Oil CorpSouthland Royalty04/14/1980WY
P&P Producing IncMidpar LP

06/15/1995
04/04/1996

WY
MT

P&P Prod Texas IncP&P Producing Inc11/01/1993WY
Pacific Enterprises ABC CorpSempra Oil & Gas Inc10/25/2000WY
Pacific Enterprises Oil Company (USA)
Vacated
Pacific Enterprises ABC Corp
    Vacated
10/25/2000
02/13/2002
WY
WY
Pacific Enterprises Oil Co (USA)Sempra O&G Inc
    Vacated
10/25/2000
02/13/2002
WY
Pacific Enterprises Royalty CompanyPacific Enterprises Oil CO (USA)02/20/1990WY
Pacific Telecom, Inc, dba PTI Communications, Inc.CenturyTel of Wyoming, Inc.03/03/2004WY
Pacific Transmission Supply CompanyPG & E Gas Supply Company07/30/1987WY
Paine Webber/Geodyne Energy Income Production Partnership I-E Geodyne Energy Income Production Partnership I-E07/29/2009
03/18/2010
NM
WY
Paine Webber/Geodyne Energy Income Production Partnership I-F Geodyne Energy Income Production Partnership I-F07/29/2009
03/18/2010
NM
WY
Paine Webber/Geodyne Production Partnership II-AGeodyne Production Partnership II-A07/29/2009
03/18/2010
NM
WY
Paine Webber/Geodyne Production Partnership II-CGeodyne Production Partnership II-C07/29/2009
03/18/2010
NM
WY
Paine Webber/Geodyne Production Partnership II-DGeodyne Production Partnership II-D07/29/2009
03/18/2010
NM
WY
Pan American Petroleum CorporationAmoco Production Company04/06/1971
06/08/1987
ES*
WY
Pan Eastern Exploration CoAPX Corp01/22/1986WY
Panada Exploration IncLaTex Petroleum Corp07/24/1997NM
PanCanadian Energy CorpEnCana Corp 05/23/2002MT
PanCanadian Energy Resources IncEnCana Energy Resources Inc 05/23/2002MT
PanCanadian Energy Holdings IncEnCana Energy Holdings Inc 05/23/2002MT
PanCanadian Energy Services IncEnCana Energy Services Inc 05/23/2002MT
PanCanadian Gulf of Mexico IncEnCana GOM Inc 05/23/2002MT
PanCanadian Heritage LandsEnCana Heritage Lands 05/23/2002MT
PanCanadian Midstream IncEnCana Midstream Inc 05/23/2002MT
PanCanadian Midstream LimitedEnCana Midstream Limited 05/23/2002MT
PanCanadian ResourcesEnCana Resources05/23/2002MT
Panhandle Western Gas CoAPX Western Corp07/28/1988WY
Pannonian Energy IncGasco Production Company04/27/2004WY
Parallel Petroleum CorporationParallel Petroleum LLC02/17/2010
02/25/2010
NM
WY
Parcal Texas, Inc, a Texas CorporationParcal, Inc. A Delaware Corporation

04/26/2005
05/09/2005

WY
NM

Parcal Texas, Inc, a Texas CorporationMidpar L.P., a Texas Corporation

04/26/2005
05/09/2005

WY
NM

Parker & Parsley Acquisition CompanyP&P Prod Texas Inc11/01/1993WY
Parker & Parsley Dev CoMidpar LP04/04/1996MT
Parker & Parsley Dev LPParker & Parsley Prod LP --DBA
    (Amended Decision)
12/27/1994
04/04/1996
MT
Parker & Parsley Dev LPPioneer Natural Res USA03/25/1999WY
Parker & Parsley O&G CoParker & Parsley; Petro USA12/30/1994MT
Parks, Ida C., Estate ofKevin R. Parks, Personal Representative07/02/2004WY
Parks, Kenneth J., Estate ofKevin R. Parks, Personal Representative07/02/2004WY
Parson Elmer S JrParson Oil LLC08/20/1996WY
Patina BNR Corporation Noble Energy Production, Inc.02/20/2009
02/25/2009
CO
WY
Patina Oil & Gas CorporationNoble Energy Production, Inc.

10/05/2005

CO
Patina Oklahoma CorpNoble Energy Production, Inc.02/20/2009
02/25/2009
CO
WY
Patina San Juan, IncorporatedNoble Energy Production, Inc.02/20/2009
02/25/2009
CO
WY
Patrick Petroleum Of MIAmerican National Petroleum Co11/04/1999WY
Patrick Petroleum Of MIGoodrich Petroleum Company of Louisiana11/04/1999WY
Patriot Land CompanyPatriot Land LLC12/02/2008WY
Patterson Petroleum, LP
Patterson Petroleum, LLC
    (NM Notice Oil & Gas Leases Only)
    WY Cover Memo. (Oil & Gas Leases Only)


06/18/2008
07/02/2008


NM
WY
Patton, Eunice Deanne J.Deanne J. Patton Trust, Harold W. Patton, Jr., Trustee 02/13/2013WY
Pauley Petroleum, Inc.Hondo Oil & Gas Company03/15/2005WY
Pauper’s Dream Company  Planet Gas USA, Inc.09/27/2011WY
P'Bell Ene Company/CorpCoEnergy Mid-Continent Inc12/31/1997NM
Peak North Dakota LLCEnerplus Resources (USA) Corporation02/28/2011
03/10/2011
MT
WY
Pecos Production CompanyChesapeake PPC Corp12/30/2005NM
Pennzoil Petroleum CoPennzoil Expl & Prod Co12/30/1994
11/09/2001
NM
WY
Pennzoil Expl & Prod CoPennzEnergy Expl & Prod LLC12/28/1998
11/09/2001
NM
WY
Pennzoil Producing Company

Pennzoil Company

03/08/1987

WY

PennzEnergy Exploration & Production Company LLCDevon Energy Production Company LP12/28/1998
12/20/2000
11/09/2001
NM
CO
WY
Peoples Energy Production - Texas, L.P.Coronado Energy E & P Company, L.L.C.01/30/2009
02/04/2009
NM
WY
Perenco LLCLCX Energy LLC09/08/2005NM
Performance Drilling Motors IncPerformance Drilling Management01/25/1999UT
Perry R Bass IncChisholm Trail Ventures LP02/23/2001WY
Peschel, Lawrence C.Mary P Jakes02/23/2001WY
Peterson, Robert W.Estate of Robert Peterson08/22/2012WY
PetroCorp Acquisition CompanyPetroCorp Inc08/26/2003WY
PetroCorp Incorporated

Unit Petroleum Company

07/27/2006

WY

Petrodel ExplorationPetrofina Delaware Inc06/07/1989WY
Petrofina Delaware IncATOFINA Petrochemicals Inc05/07/2002MT
Petrofina Exploration IncAmerican Petrofina Company of Texas
    (Certificate Only)
10/30/1990
06/28/1985
WY
Petro-Hunt, L.L.C.Halcon Williston I, LLC03/12/2013 
08/26/2013 
MT
WY
Petroleum Development CorpWarren E&P Inc11/14/2003WY
Petroleum LP, LLLP
Patterson Petroleum, LLC
    (NM Notice Oil & Gas Leases Only)
    WY Cover Memo. (Oil & Gas Leases Only)


06/18/2008
07/02/2008


NM
WY
Petroleum Resources CoBison Production Company09/15/1994NM
Petromark Merger CoGKM Inc10/15/1987WY
Petromark Resources CoPEDCO Resources Co05/22/1990WY
Petromark Resources, IncGKM Inc10/15/1987WY
Petroquest, IncHigh Plains Oil Corp05/09/1986WY
Petroro CorpCaptiva Res Inc06/12/1998WY
Petrotide LtdPosse Energy Ltd02/03/1997MT
Petrotiger II LtdPosse Energy Lte02/03/1997MT
Petro-Lewis CorporationFPCO Oil and Gas Company07/24/1987WY
Petro Ventures Expl CoMCNIC O&G, Properties Inc12/31/1997NM
PETX Petro CorpAnchor Bay Corp05/01/1990WY
Phibro Oil & Gas CorpIDC Energy Corp07/19/1984WY
Philadelphia Quartz Company

PQ Corporation

05/01/1978

WY

Phillips Oil CompanyPhillips Petroleum Co01/08/1988CA
Phillips Oil Company Phillips Petroleum Company
    (Amended)
    (Amended)
10/29/1985
12/17/1985
01/08/1986
WY
WY
WY
Phillips Petroleum CompanyConocoPhillips Company02/14/2003WY
Picon Petroleum, Inc.

Picon Exploration, Inc.

01/06/1986

WY

Pilot Production CompanyTom Brown, Inc. (NM Notice) 
    (Wyoming Cover Memorandum)
    (Amended Wyoming Cover Memorandum 
     Vacating Merger Notice)
09/18/2003
09/18/2003
06/06/2011
NM

WY
Pinedale Corporation

Energy Minerals Corporation
    Amended Decision-Added Leases
    Amended Decision-Added Leases

09/14/1979
02/23/1978
02/11/1983

WY
WY
WY

Pinnacle Gas Resources, Inc.  Summit Gas Resources, Inc.

04/08/2011

WY
Pioneer BC Asset Sub LLCPioneer Debt Sub LLC02/10/2005MT
Pioneer Debt Sub LLCPioneer Natural Resources USA Inc02/10/2005MT
Pioneer Evergreen Properties LLCPioneer Debt Sub LLC02/10/2005MT
Pioneer NaturalPioneer Natural Resources USA Inc04/08/1999WY
Plains Energy Investments, Inc.Voyager Oil & Gas, Inc.

07/02/2012

08/29/2012

MT

WY
Plains Petro CompanyBarrett Resources Corp03/14/2001WY
Plains Petro Operating CoBarrett Resources Corp03/14/2001WY
Plains Pipeline LPPlains Marketing LP
08/01/2005
WY
Planet Oil and Minerals Corp

Dalco Oil Company

10/21/1977

WY

Plantation Petroleum Acquisition LLCRB Operating Company
10/21/2005
NM

Plaza Acquisition I Corp

EnCana Oil & Gas ( USA), Inc.

03/22/2005
04/22/2005

CO
WY

Plaza Acquisition II CorporationTom Brown Inc12/22/2004ES
Pogo Producing CompanyPXP Acquisition LLC02/12/2008WY
Pogo Producing Company LLCPXP Producing Company LLC 09/28/2012WY
Polumbus Corporation, The

W.R. Grace and Company
    Amended Decision-Additional Lease

03/17/1977
04/07/1977

WY
WY

Polumbus Petroleum Corp

W.R. Grace and Company
    Amended Decision-Additional Lease
    Amended Decision-Additional Lease
    Amended Decision-Additional Lease
    Amended Decision-Additional Lease
    Amended Decision-Additional Lease
    Amended Decision-Additional Lease

11/07/1978
04/17/1980
07/29/1980
05/01/1981
08/03/1981
06/11/1982
06/11/1985

WY
WY
WY
WY
WY
WY
WY

Pontotoc Holdings, Inc.Pontotoc Production Company, Inc.

05/05/2010
05/18/2010

NM
WY

P. O. & G. Resources-Texas, L.L.C.P. O. & G. Resources, LP 

09/13/2012

WY

P O R Oil & Gas IncNorcen Explorer Inc07/24/1995WY
Posse Petroleum LtdPosse Energy Ltd02/03/1997MT
Powder Acquisition Co.Pinnacle Gas Resources, Inc. 04/05/2011WY
Powder River Coal CompanyPowder River Coal LLC

03/27/2006

WY
Powerbridge, Inc.

Pioneer Natural Resources USA, Inc.

04/26/2005

MT

PPPCO One Oil Co LtdPosse Energy Ltd02/03/1997MT
PRB Gas Transportation, Inc.PRB Oil & Gas, Inc.
    (Rights-of-Way Grants Only)
PendingWY
PRB Oil & Gas, Inc.Black Raven Energy, Inc.06/16/2009WY
PRE Resources, Inc.PRE Resources, LLC05/13/2013WY
Presido Energy IncPresidio Exploration Inc03/10/1994WY
Presidio Exploration IncTBI Exploration Inc07/18/1997WY
Presidio Oil Company, TBI Oil CompanyTom Brown, Inc.03/02/2005WY
Presidio Pipeline IncPresidio Gas Resources07/23/1991WY
Preston, Jeffery D, aka Jeffrey D ChorneyJeffrey D Preston Testamentary Trust & CB Community School Parent-Teacher-Student Association11/05/2002WY
Prima Management CorpPrima Oil & Gas Company01/04/1990WY
Prima Oil & Gas Company (a Colorado Corporation)Petro-Canada Resources (USA) Inc12/27/2004WY
Primary Natural Resources, Inc.Resolute Wyoming, Inc.
    Oil & Gas Leases
Resolute Wyoming, Inc.
    Rights-of-way Grants

11/13/2008

01/07/2009

WY

WY
PrimeWest Petroleum, Inc. TAQA North USA, Inc.
    Oil & Gas Leases Only 
    Rights-of-Way Grants Only
02/12/2009

Pending
WY

WY
Primero Gas Marketing Co

Pioneer Natural Resources USA, Inc.

04/26/2005

MT

Princeps Partners, Inc.JN Resources, Inc.10/03/2005WY
Prodeco Exploration IncProdeco Investments Inc10/07/1986WY
Prodeco Investments IncBow Valley O&G Inc.10/07/1986WY
Prodeco Oil & Gas Co LtdBow Valley Industries10/07/1986WY
Prodeco Resources IncProdeco Investments, Inc10/07/1987WY
Program Acquisition CoBellwether Exploration Co05/21/2001WY
Progress Fuels North Texas Gas LPWinchester Production Company

01/25/2005
03/02/2005

NM
WY

Provident Life Insurance Co

United States Life Insurance Co

12/29/2004

MT

Provident Resources IncTrend Exploration Ltd
    (Amended Decision)
08/19/1986
05/04/1995
WY
WY
PRS Offshore, L.P.Pure Resources, LP 06/08/2006NM
Prudential-Bache Energy Income Fund 1983 P-1, et alParker & Parsley Acquisition Compnay12/22/1993WY
Prudential-Bache Energy Income Fund Prod Ptnrshp 1983 p-1, et alParker & Parsley Acquisition Company12/22/1993WY
Prudential-Bache Energy Income Ltd Ptnrshp IIP-4, et alParker & Parsley Acquisition Company12/22/1993WY
Prudential-Bache Energy Income Prod Ptnrshp IIP-4, et alParker & Parsley Acquisition Company12/22/1993WY
Prudential-Bache Pension & International Investor LTD Ptnrshp PI-1 LTD, et alParker & Parsley Acquisition Company12/22/1993WY
Prudential-Bache Pension & International Investor Prod Ptnrshp PI-4, et alParker & Parsley Acquisition Company12/22/1993WY
Prudential-Bache Pension & Retirement LTD Ptnrshp PBR-1, et alParker & Parsley Acquisition Company12/22/1993WY
Prudential-Bache Pension & Retirement Production Ptnrshp PBR-1, et alParker & Parsley Acquisition Company12/22/1993WY
Prudential Funds, Inc., The

Prudential Group, Inc., The
    Amended Decision
    Amended Decision

09/28/1978
12/26/1978
05/02/1979

WY
WY
WY

Prudential Minerals Exploration Corp

Del Mar Petroleum, Inc.

06/08/1972
11/14/1974

NM
WY

Public Lands Exploration IncCorona Oil Co11/18/1981WY
Pure Energy Group, Inc. Doral Acquisition Corp07/23/2012
08/29/2012
NM
WY

Pure Oil Company
(An Ohio Corporation)

Union Oil Company of CA

09/01/1965
09/10/1965

WY
ES

Pure GP, LPPure Resources, L.P.

10/11/2006
11/06/2006

MT
WY

Pure Resources, LP

Chevron Midcontinent, L.P.
    (Oil & Gas Leases Only)
Chevron Midcontinent, L.P.
    (Rights-of-Way Grants Only)

06/08/2006

Withdrawn

NM

WY
Pure Resources Holdings, LLCPure Resources, L.P.

10/11/2006
11/06/2006

MT
WY
PXP Acquisition LLCPogo Producing Company LLC

02/12/2008

WY
* Eastern States Office, Springfield VA

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Last updated: 04-23-2014