D & A Oil Company, a General Partnership
D & D Energy
D & J Oil Company, Inc.
D & L Oil, LLC
D & L Services, Inc.
D & L Spring Creek Oil, a General Partnership
D & R Oil, Inc.
D & R Well Service, Inc.
D & T Oil Company
D & Z Exploration, Inc.
D J Oil Operations
D K Oil Services LLC
D Oil, Inc.
D S & W Well Servicing, Inc.
D. E. Exploration, Inc.
D. Jackson Rentals LLC
D. R. Lauck Oil Co., Inc.
D.K. Rush Oil Co., LLC
D.M. Well Service
Dakota Production Co., Inc.
Dale E. Jackson Production Co.
DaMar Resources, Inc.
Damm Resources LLC
Daniel Ard
Daniels Oil Co.
Dark Horse
Dark Horse Oil Company LLC
Darnall Drilling
Darrah, John Jay, Jr.
Dart Cherokee Basin Operating Co., LLC
Dass Oil Company
David D. Davis
Davis Petroleum, Inc.
Davis, Travis H., Gas Account
Dawson-Markwell Exploration Co.
Daystar Petroleum, Inc.
DBD Oil, LLC
DE & TZ LLC
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De Young, Dennis E.
Dechant Oil Operations, LLC
Deck Oil Co.
Deer Run Oil Lease, LLC
Delaware Energy Corporation
Dell-Ray Investments, Inc.
Delozier, Orval & Stevens, Floyd, a General Partnership
Demco Oil and Gas Company
Denis Roberts Oil
Dennis Fitzpatrick Rev. Trust
Deshal Energy LLC
Destiny Services LLC
Deutsch Oil Company
Deutscher Oil Operations
Devon Energy Corporation
Devon Energy Production Company, L.P.
Dexxon, Inc.
DGH Oil, LLC
DHP Investments, Ltd.
Diamond B Miami Flood, Ltd.
Diamond Star Oil, Inc.
Didomai Oil & Gas LLC
Diehl Oil Inc
Dilley, W.R. & A'Meta I.
Directional Drilling Systems, LLC
Discovery Natural Resources LLC
Dixie Oil, LLC
Dixon Energy, Inc.
Dixon Operating Company, LLC
Dixon, Curtis
Dixon, Margaret
Dixon, Mike
Dixon, Robin Francine
DK Operating Inc.
DMH Petroleum, Inc.
DNR Oil and Gas, Inc.
Docking Development Company, LLC
Dolphin Energy LLC
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Dominion Oklahoma Texas Expl & Prod, Inc.
Don Erbert Oil Company
Don Karst Well Service, Inc.
Don Sims Oil
Donke Oil & Gas, LLC
Donna Lee Oil Company, Inc.
Doonan and Sons, Inc.
Dorado E&P Partners, LLC
Dorchester Minerals Operating LP
Doty, Tim
Double "B" Oil Company
Double "D" Oil Company, Inc.
Double "K" Oil, Inc.
Double 7 Oil and Gas LLC
Double D's LLC
Double Eagle Exploration, Inc.
Double Eagle Resources, LLC
Double F Oil Co.
Double L Oil Producers
Doudna, Mark A.
Doug's Pumping Service
Downing-Nelson Oil Co Inc
Dragonslayer, LLC
Drake Exploration, LLC
Dreiling Exploration LLC
Dreiling Oil Inc
Dreyer Oil
Dreyer Oil
Drillers & Producers, Inc.
Driscoll, Jerry J Oil Investment Inc
Duke Oil & Gas Company, LLC
Dunham, Norma J.
Dunne Equities Operating, Inc.
Dunne Equities, Inc.
Dunne-Gardner Petroleum, Inc.
Dyer, Charles Wilbur
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