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C & B Operating Inc.
C & C Oil
C & C Oil & Gas
C & E Oil, LLC
C & F Ranch LLC
C & G Drilling, Inc.
C & J Production LLC
C & K Oil Company
C & K Operating LLC
C & M Oil Company
C & R Oil
C & R Petroleum Co.
C & S Oil
C & S Oil Company, LLC
C G Oil, Inc.
C. F. Oil, a General Partnership
C. H. Todd, Inc.
C3Oil, LLC
C5 Energy LLC
Cabot Oil & Gas Corporation
Caerus Kansas LLC
Calgary Energy, LLC
Calvin Noah, LLC
Cambria Corporation
Cambron, Paul L.
Camio Enterprises, LLC
Campbell Energy LLC
Canaday Oil Corporation
Canyon Operating LLC
Carl E. Gungoll Exploration, LLC
Carlon Oil & Gas Company, Inc.
Carmen Schmitt, Inc.
Caroden Energy LLC
Carrie Exploration & Development, LLC
Carroll Energy, LLC
Casebeer, Inc.
Casillas Petroleum Corp
Castelli Energy LLC
Castelli Exploration, Inc.
Castle Resources, Inc.
Catfish Oil
Cattlemans Oil Operations LLC
CDC Oil, LLC
CEC Operations LLC
Central Operating, Inc.
Central Resources, Inc.
CEP Mid-Continent LLC
CFM 66 LLC
CFMI LLC
Chaco Energy Company
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Charter Energy, Inc.
Chase Energy, LLC
Chautauqua Oil and Gas LLC
CHC III Paola Energy, LLC
Cherokee Basin Pipeline LLC
Cherokee Gas Holdings LLC
Cherokee Oil
Cherokee Wells LLC
CherokeeNRG LLC
Chesapeake Operating, LLC
Chevron U. S. A. Inc.
Cheyenne Oil Services, Inc.
Chieftain Oil Co., Inc.
Chisum Oil & Gas, LLC
Chizum Oil, LLC
Cholla Production, LLC
Chriestenson Oil LLC
Chris Batchman Inc.
Cimarex Energy Co.
Circle E Investments
Circle K Enterprises
Cisco Operating LLC
Citadel Oil LLC
Citation Oil & Gas Corp.
City of Garden City, Kansas
City of Hugoton, Kansas
City of Satanta
City of Satanta
CJ Oil Inc
CK Oil
CK Oil & Gas LLC
Cla-Mar Oil Company, LLC
Claassen Oil and Gas, Inc.
Clapp Oil LLC
Clark Energy, LLC
Clark Exploration Co.
Clark Oil, LLC
Clark, Daryl
Clarke Corporation
Classic Well Service, Inc.
Clausing, Garry
Clinton Production, Inc.
Clover Oil Company
Clubine, Jim L.
Clute Oil Corporation
CMX, Inc.
Coachman Energy Operating Company LLC
Coal Creek Energy, LLC
Coats Energy, Inc.
Cobalt Energy LLC
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Cody & Krysti Hunsperger
Cody, Ken L.
Coen Energy Corporation
Collins Oil, LLC
Colorado Interstate Gas Co., LLC
Colt Energy Inc
Comanche Resources Company
Compass Exploration LLC
Concorde Resources Corporation
Condor Energy, Inc.
Conley P. Smith LLC
Conley, Harry
Connell, Mark Allen
Considine, Barry
Continuum Midstream, LLC
Cooper Service Co.
Coral Coast Petroleum, L.C.
Coral Production Corporation
Core S&S LLC
Cortam, Inc.
Cottonwood Energy, LLC
Cottrell Gas, LLC
Craig Oil Company
Crawford County Production LLC
Crawford Oil LLC
Crawford Production Company
Crazy Horse Oil
Cris Oil
Cross Bar Energy, LLC
Cross Country Ventures LLC
Cross Oil, LLC
Cross Timbers Operating Company
Crown Consulting, Inc.
Crown Energy Company
Crown Well Service Inc
Crude Kin Oil Company, Inc.
Crypto Colo Center Corp
CTR 247 LLC
Culbreath Oil & Gas Company, Inc.
Culver & Grounds Oil Properties, Inc.
Cunningham Crude, a General Partnership
Curry, Gregg
Curt's Oil Operation, LLC
Custom Service LLC
Cutler Oil, LLC
CWB Oil Company, LLC
Cycle Oil & Gas Ltd
Cyclone Petroleum, Incorporated
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