Oil & Gas Operations

Couch Oil & Gas, Inc.

Phone: (972) 550-4822

Covey Park Energy, LLC

Phone: (214) 548-6000

Cox Operating, LLC

Coyote Petroleum

Crampton, Freddie, LP

Crawford Hughes Operating Co.

Crawley Petroleum Corp.

Creed Operating Co., LLC

Phone: (940) 767-4171

Creek Energy, Inc.

Phone: (325) 646-0466

Crescent Point Energy US Corp.

Phone: (720) 880-3610

Crestone Peak Resources

Phone: (416) 972-8317

Crestwood Energy, LLC

Phone: (713) 595-6685

Crimson Energy Partners, III, LLC

Criswell Energy, LLC

Phone: (580) 451-0053

CRM Energy Partners

Phone: (918) 396-4779

CRM Energy, Inc.

Phone: (405) 848-5420

Cross Timbers Energy, LLC

Phone: (817) 334-7800

Cross Timbers Oil Co., LLC

Phone: (316) 733-1515

Crown Energy Co., Inc.

Crownquest Operating, LLC

Phone: (505) 325-5750

Crude Oil, LLC

Phone: (870) 310-2620

CST Energy

Phone: (432) 770-4800

Cub Creek Energy LLC

Phone: (303) 446-6140

Cubic Energy, Inc.

Culbreath Oil & Gas Co., Inc.

Cumberland Coal Resources, LP

Phone: (724) 627-7500

Cumberland Valley Resources, LLC

Cumming Co., Inc., The

Cunningham Energy, LLC

Curtis Oil, Inc.

Phone: (814) 966-3452

Cutter Oil Co.

CW Investments

Phone: (918) 756-5042

CW Resources, Inc.

CWOC

Phone: (432) 213-3207

Cynosure Energy, LLC

Cypress E&P Corp.

Phone: (512) 964-4220

Cypress Operating, Inc.

D&A Oil Co.

Phone: (620) 584-2247

D&D Oil

Phone: (740) 472-0732

D&J Oil Co., Inc.

D&L Operating, LLC

D&M Production Co.

D&N Oil

Phone: (940) 759-2792

D-Mil Production, Inc.

Phone: (940) 464-3426

D.W.P. Production

Phone: (806) 435-2384

D90 Energy, LLC

Phone: (713) 227-0391

Dakota Exploration, LLC

Dale Operating Co.

Danco Oil & Gas

Phone: (806) 883-2028

Danick Resources, Inc.

Dart Cherokee Basin Operating Co.

Dart Oil & Gas Corp.

Davis & Salmon

Phone: (940) 759-2053

Davis Petroleum Corp.

Davis, Don, Oil Co.

Davis, Garry, Oil LLC

Davis, John T.

Phone: (620) 496-6822

Daybreak Oil & Gas, Inc.

Phone: (509) 232-7674

Daystar Petroleum, Inc.

DBD Operating Co.

Phone: (940) 696-8052

DC Energy, Inc.

DC Oil Company, Inc.

Phone: (806) 229-3355

DDC Oil Co.

DDD Exploration, Inc.

DeHart Co.

Phone: (580) 223-7792

Del Mar Energy, Inc.

Delaware Energy Corp.

Phone: (620) 543-2323

Delta Force Energy, Inc.

Phone: (918) 455-9132

Delta Oil & Gas Co.

Phone: (254) 559-9841

Delta Oil Co., Inc.

Denbury Resources, Inc.

Phone: (406) 778-3361

Dewbre Petroleum Corp.

Dews, J. L., Oil Co.

Diamondback Energy, Inc.

Dillard & Dillard, Inc.

Phone: (940) 733-3633

Discovery Natural Resources LLC

Diversified Resources, Inc.

Phone: (205) 408-0909

Dixon Energy, Inc.

Dixon, J. C.

Phone: (918) 756-3196

DMJ Gas & Oil, Inc.

Phone: (724) 354-3868

Dome Drilling Co.

Dome Engineering

Dominion Wexpro

Dorado E&P Partners, LLC

Doran Oil Properties

Phone: (618) 283-2460

Dorfman Production Co.

Dorward Energy Corp.

Phone: (304) 462-4006

Doty, Tim

Phone: (620) 331-9791

Double D Oil Co. Inc.

Drake Exploration, LLC

Phone: (620) 441-7223

Dreher, George R.

Phone: (432) 686-0397

Dreiling Exploration LLC

Phone: (785) 639-2099

DRG Energy, Inc.

Drillmar Energy, Inc.

Drummond, Frederick

Phone: (918) 287-4400

Dual Energy, Inc.

Phone: (318) 548-5520

Duck Creek Energy, Inc.

Dugan Production Corp.

Duncan Drilling Co.

Phone: (432) 263-7721

Durango Resources Corp.