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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
Dail C West LPWest Energy LLC03/26/2015WY
Dakota Gas Company LLCSignal Hill Company LLC04/05/2012

WY

Dalco Oil Company

Sabine Production Company 

    Amended Decision-Additional Lease

03/09/1977
03/25/1977
05/23/1977
10/21/1977

WY
CO
WY
NM

DALEN Res O&G CoEnserch Expl Inc02/15/1996MT
Damson Resources CorpDamson Oil Corp04/03/1978WY
Dart IncLR Company
Amended Decision
11/15/1979
04/23/1980
WY
WY
Davis, Bobby JAm-West Petro12/12/1989WY

Davis, Walter G (Gray) 

Estate of Walter G. (Gray) Davis, Robbie Elizabeth Davis successor-in-interest to the Estate.

08/02/1984

WY

DC Dudley & AssocDudley & Assoc LLC07/29/1997WY
Decker Energy Investments LLCDecker Energy Investments, LP

10/10/2006
10/23/2006

MT
WY

Deemar, Irving. R.Estate of Irving R. Deemar, Sharon Deemar Szachowicz & Ira Deemar, independent executors for the estate10/21/2005WY
Deines, Gloria JeanThe Gloria Jean Deines Family (Bypass) Trust & the Gloria Jean Deines Living Trust01/29/2007WY
DeKalb CorpDeKalb Energy Co10/21/1988WY
DeKalb Energy CoDEK Energy Co12/29/1998CO
Delaware Inter-American Petro LtdKenai Oil Company Inc
    Amended Decision-Additional Lease
07/14/1978
08/02/1978
10/25/1978
WY
WY
NV
Del Mar Petroleum, Inc.Shenandoah Oil Corp03/03/1977NM
Delta Exploration CompanyPar Petroleum Corporation  05/09/2013
08/27/2013
OR
WY
Delta Petroleum CorporationPar Petroleum Corporation05/09/2013
08/27/2013
 OR
WY
Deminex U.S. Oil CoSouthwest Royalties Inc06/29/2004WY
Denbury Resources, Inc  Denbury Resources Onshore LLC10/31/2011 
01/23/2012 
ES
WY
DeSmet Richard PRichard P DeSmet and Thelma F. DeSmet 1971 Trust05/26/1976WY
DeSmet Thelma FRichard P DeSmet and Thelma F. DeSmet 1971 Trust05/26/1976WY
Destry Gas Co LtdPosse Energy Ltd02/03/1997MT
Detex Oil CorpDeminex U.S. Oil Co03/27/1980WY
Devlan Expl Co LtdDevlan Exploration Inc03/09/1999WY
Devon CorporationDevon Energy Corp09/11/1981WY
Devon Acqstn CorpDevon Permian Corp07/24/2001
07/24/2001
WY
CO
Devon Ene CorpDevon Ene Corp (Nevada)09/28/1980WY
Devon Ene CorpDevon Ene Corp (Delaware)09/28/1980WY
Devon Ene Corp NevadaDeven Energy Corp (NV)09/28/1990
11/22/2000
WY
CO
Devon Energy Corp (NV)Devon Energy Prod CO LP11/09/2001
12/20/2000
WY
Devon Energy Operating Company LPDevon Energy Production Company09/08/2004
08/14/2006
CO
WY
Devon Energy Oper CorpDevon Energy Corp (NV)02/14/1997WY
Devon Louisiana CorporationDevon Energy Production Co LP 
    (Oil & Gas Leases Only)
Devon Energy Production Co LP 
    (Rights-of-Way Grants Only)

03/27/2006

05/25/2006

CO

WY

Devon Merger CompanySanta Fe Snyder Corp10/11/2000
11/13/2004
UT
WY
Devon Permian CorpDevon Energy Prod Co LP07/24/2001
07/24/2001
WY
CO
Devon SFS Operating IncDevon Energy Production Company LP12/09/2002
11/22/2000
WY
CO
Diablo Oil 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

Diamond Alkali CompanyDiamond Shamrock Corp01/16/1968
02/01/1968
UT
WY
Diamond Shamrock Corp

Diamond Chemicals Co
    (Amended Decision-Additional Leases)

04/26/1984
06/13/1984
06/29/1984

WY
WY
WY
Diamond Shamrock Exploration CoAGM Corp03/18/1987WY
Diamond Shamrock Exploration CoMaxus Exploration Co07/01/1987WY
Dietrich Exploration Co IncDietrich Resources Corp07/23/1981WY
Dietrich Resources CorpDRX Inc01/28/1994WY
Diverse Energy InvestmentsFNRC DEI GP05/20/2009WY
Diverse GP IIIFNRC DIII GP05/20/2009WY
DKM Resources IncMedallion Production Co03/24/1994WY
DLB Oil & Gas, Inc.Chesapeake Mid-Continent Corp.08/12/1998
 05/22/2008
NM
WY
DOC Production Services CoDamson Holding Corp07/21/1986WY
Dolphin Drilling COMorsey-Wells Oil and Gas corp11/25/1977WY
Dome 1980 Institutional Investors Ltd,
a Limited Partnership

Company Dissolved
Assets go to Texaco Producing Inc

07/11/1994WY
Dominion Black Warrior Basin, Inc.HighMount Black Warrior Basin, LLC05/04/2010
05/17/2010
ES
WY
Dominion Exploration & Production, Inc.Consol Gas Company12/17/2013WY
Dominion Midwest Energy, Inc.HighMount Midwest Energy, LLC05/04/2010
05/17/2010
ES
WY
Doornbos, Gene A, Estate ofKaren D. Davis & Steven M Doornbos10/21/1989WY
Doral Acquisition Corp  Doral Energy Corp07/23/2012
08/29/2012
NM
WY
Doral Energy Corp Cross Border Resources, Inc.07/23/2012
08/29/2012
NM
WY
Dos Ninos Oil & Gas IncSimba Energy Corp04/23/2001NM
Double Eagle Petroleum Company  Escalera Resources Company06/06/2014WY
Double Eagle Petroleum & Mining CompanyDouble Eagle Petroleum Company07/03/2001WY
Double Oil & Gas IncThe Drexel Burnham Lambert Group Ltd08/19/1992WY
Dow Chemical Company of DE, The
Dow Chemical Company of MI, The
Dow Chemical Company of MI, The
    (Remove Certificate Only Statement)
09/10/2004WY
Drexel Burnham Lambert Group LtdThe Drexel Burnham Lambert Group Ltd08/19/1992WY
Drill and Pump PartnershipCorporate Dissolution, assets divided between partners; Roger J Mayott,
John F Sinclair & Joseph Stevens
11/22/2005WY
Drumheller, Lida RLida R Drumheller Trust,
Gene L Boles, Personal Representative
03/24/1989WY
Drwenski, RemauEstate of Remau Drwenski, Vernon R. Drwenski, Personal Representative12/05/2008WY
Drwenski, Vernon R.
Estate of Vernon R. Drwenski
12/05/2008
WY
Du Pont Holdings IncConoco Inc
    (Amended Decision)
11/10/1981
03/22/1982
WY
Duer Wagner & CompanyWagner Oil Company09/17/2004WY
Duke Energy Field Services, LPDCP Midstream LP 
    (rights-of-way only)
02/28/2007 WY
Duncan Enterprises IncDEI Enterprises Inc10/17/1996WY
Duncan Oil PartnersDuncan Oil Partners LLC09/20/2013
10/28/2013 
MT
WY
Duncan, Velma M, Estate ofWalter Duncan07/31/1974WY
Duncan, Walter, Estate ofRaymond T. Duncan10/25/1983WY
Dusty Mac Resources IncTransGlobe O&G Corp07/18/1997WY
Duzik, Martha AnneMartha Anne Duzik Trust,
Lee Anne Briscoe & Trudy Burtoft, successor trustees
12/03/2004WY
DWG & CompanyDWG LLC07/25/2004WY
Dyne Exploration CompanyPontotoc Production Company, Inc.05/05/2010
05/18/2010
NM
WY
Dynegy Energy Res LPDynegy Midstream Services LP07/12/1999WY
Dynegy Midstream Services LPTarga Midstream Services LP 
    (rights-of-way only)
PendingWY


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