C & B Operating Inc.
C & C Oil & Gas
C & C Tank Service, Inc.
C & E Oil, LLC
C & G Drilling, Inc.
C & H Energy LLC
C & J Production LLC
C & J Pumping, Inc.
C & K Oil Company
C & K Operating LLC
C & M Oil Company
C & R Oil
C & R Petroleum Co.
C & R Well Service, a General Partnership
C & S Oil
C & W Oil, LLC
C G Oil, Inc.
C-S Oil Co.
C. D. OIL, Inc.
C. F. Oil, a General Partnership
C. H. Todd, Inc.
C12 Kansas Oil, LLC
C3Oil, LLC
C5 Energy LLC
Cabot Oil & Gas Corporation
Caddis Exploration, LLC
Caerus Kansas LLC
Caerus Washco LLC
Calgary Energy, LLC
Cambria Corporation
Cambron, Paul L.
Camio Enterprises, LLC
Campbell, Robert E.
Canaday Oil Corporation
Cannon Oil Co.
Carl E. Gungoll Exploration, LLC
Carlon Oil & Gas Company, Inc.
Carmen Schmitt, Inc.
Caroden Energy LLC
Carrie Exploration & Development, LLC
Carroll Energy, LLC
Carter, Calvin Gene
Casebeer, Inc.
Casey Musgrove Oil Co., Inc.
Casey, Lyle (Deceased)
Casillas Petroleum Corp
Castelli Exploration, Inc.
Castle Resources, Inc.
CAT Energy, LLC
Catfish Oil
Catlett Petroleum Corporation
Cattlemans Oil Operations LLC
CEC Operations LLC
Ceja Corporation
CENTRAL CRUDE CORP.
Central Operating, Inc.
Central Resources, Inc.
Central States Energy LLC
CEP Mid-Continent LLC
CFM 66 LLC
CFMI LLC
Chaco Energy Company
Challenger Exploration
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Chance Drilling Company
Chaparral Energy, Inc.
Chaparral Energy, L.L.C.
Charter Energy, Inc.
Charter Production Company
Chase Energy, LLC
Cherokee Basin Holdings, LLC
Cherokee Basin Pipeline LLC
Cherokee Oil
Cherokee Wells LLC
CherokeeNRG LLC
CHESAPEAKE ENERGY MARKETING INC
Chesapeake Operating, LLC
CHEVRON TEXACO EXPLORATION PROD INC
Chevron U. S. A. Inc.
Chevron USA, Inc.
Cheyenne Oil Services, Inc.
Chieftain Oil Co., Inc.
China Black Oil Well Service
Chipmunk's Oil & Gas Lease Oper., Inc.
Chisholm Gas System Corporation
Cholla Production, LLC
Chris Batchman Inc.
Chris Melander Drilling
CHS McPherson Refinery Inc
Churchill Operating
Cimarex Energy Co.
Circle K Enterprises
Circle L Exploration
Circle Star Operating Corp
CIRCLE T OIL
Cisco Operating LLC
Citation Oil & Gas Corp.
City of Garden City, Kansas
City of Hugoton, Kansas
City of Satanta
City of Satanta
CK Oil
CK Oil & Gas LLC
Cla-Mar Oil Company, LLC
Claassen Oil and Gas, Inc.
Claibourn, Gerri
Clair Oil, Inc.
Clapp Oil LLC
CLARCO GAS COMPANY INC
Clark Energy, LLC
Clark Exploration Co.
Clark Oil, LLC
Clark, Daryl
Clarke Corporation
Classic Well Service, Inc.
Clausing, Garry
Clawson, Merle Eugene
Clayton Corp Petro & Ntrl Gas Prodn
Clayton Corporation
Cleary Petroleum Corporation
Cleaver, Loraine G. (deceased) Estate
Clinton Production, Inc.
Clothier, David W.
Clover Oil Company
Clubine, Jim L.
Clute Oil Corporation
CMX, Inc.
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Coachman Energy Operating Company LLC
Coastal Oil & Gas Corporation
Coats Energy, Inc.
Cobalt Energy LLC
Cobra Oil & Gas Corporation
Cody & Krysti Hunsperger
Cody, Ken L.
Coen Energy Corporation
Colorado Interstate Gas Co., LLC
Colt Energy Inc
Columbian Services Corporation
Comanche Resources Company
Combs, Troy L.
Concorde Resources Corporation
Condor Energy, Inc.
Conley, Harry
Connell, Mark Allen
Conner, Rick
Considine, Barry
Continental Energy
Continental Operating Co.
Continuum Midstream, LLC
Cooper Service Co.
Copperhead Creek Enterprises, Inc.
Coral Coast Petroleum, L.C.
Coral Production Corporation
Cortam, Inc.
Cortez Heartland, LLC
Costilla Petroleum Corporation
Cowley Energy Associates, LLC
Crager, Kenneth G.
Craig Oil Company
Craig, Bruce R. & Joanne L.
Crawford Oil & Gas Co LLC
Crawford Oil LLC
Crawford Production Company
Crazy Horse Oil
Cris Oil
Crooked Row Farms
Cross Bar Energy, LLC
Cross Bar Petroleum, Inc.
Cross Timbers Operating Company
Crown Consulting, Inc.
Crown Energy Company
Crown Well Service Inc
Crownover, Dinnis or Patricia
Crude Kin Oil Company, Inc.
CRUDE MARKETING, INC.
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
Custer Oil & Gas, LLC
Cutler Oil, LLC
CWB Oil Company, LLC
Cyclone Petroleum, Incorporated
Cynosure Energy, LLC
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