- Devon Energy Corp
- Devon Energy Corp
- Devon Energy Corp
- Devon Energy Production Co
- Devon Energy Production Co
- Devon Energy Production Co
- Devonian Resources Inc
- Dewey's Oil Inc
- Dewey's Oil Inc
- Di Mauro Oil Co
- Dial Oil
- Dial Oil
- Dial Oil Co Inc
- Diamond Head Properties
- Diamond Oil Burner Svc
- Diamond Shamrock R & M
- Diamondback Oil Partners
- Dible Oil Debeque
- Diehl Oil Inc
- Dieringer J W Oil Oprtrs
- Digital Conversions
- Digital Conversions
- Dillard & Dillard
- Dillard & Dillard
- Dillon Oil & Gas
- Dils Oil & Gas
- Dimension Energy Co
- Dimock Petroleum Co
- Dimock Petroleum Co
- Discus Oil Corp
- Dixie Exploration
- DJF Svc
- DJM Oil Co
- DKM Offshore Energy Inc
- DMF Inc
- DMF Inc
- DMF Inc
- Dmf Inc
- DNL Oil Corp
- Docking Development Co
- Doie Allen Office
- Domestic Oil
- Dominion E & P
- Dominion E & P Inc
- Dominion Exploration & Prdctn
- Dominion Oklahoma Texas
- Don Baldwin
- Don Baldwin
- Don Baldwin
- Don C Christian Oil Co Inc
- Don Goblowsky Oil & Gas
- Don H Wilson Inc
- Don L Bishop
- Don Small & Sons Oil Dist Co
- Don Small & Sons Oil Dist Co
- Don W Davis Enterprises
- Donald Small & Sons Oil
- Donald Small & Sons Oil
- Donnie W Lambert Oil & Gas
- Donoho Oil & Gas Consultants
- Dorado Oil Co
- Dorchester Minerals
- Dorchester Minerals
- Dorchester Minerals LP
- Dorchester Minerals Operating
- Dorfman Production Co
- Doss Oil Royalty Co
- Doss's Oil Burner Svc
- Double Eagle Petroleum Co
- Double Eagle Petroleum Co
- Doug Coe & Assoc Inc
- Doug Coe & Assoc Inc
- Douglas Mineral Trust
- Douglas Mineral Trust
- Douglas Petroleum
- Dover Exploration Co
- Downing Nelson Oil Co
- Downing-Nelson Oil Co Inc
- Downs Oil Co
- Doyle Hartman Oil Operators
- Doyle T Grogan
- Draeger Oil
- Drake Exploration Inc
- Dreiling Oil Inc
- Dreiling Oil Inc
- Drennan Danny E Oil Producer
- Drennan Danny E Oil Producer
- Dresser Oil Tools
- Drew Haley Oil Producers
- Dreyfus Louis Natural Gas
- Drillers & Producers Inc
- Drilling & Production Co
- Dryfork Production Co LLC
- Dryfork Production Co LLC
- DSR Oil & Gas Inc
- DSTJ Corp
- Dual Energy
- Dubach Gas Co
- Dubach Gas Co
- Duer Wagner & Co
- Dugan Production Corp
- Dugas Oil Co Inc
- Duke Energy
- Duke Energy
- Duke Energy Field Svc
- Duke Energy Field Svc
- Duke Energy Field Svc
- Duke Energy Svc Inc
- Duke Field Svc
- Duke Of Oil
- Duke Of Oil 11 EZ Lube
- Duke Oil & Gas
- Duke Oil & Gas
- Dukeenergy Field Svc
- Duncan Oil
- Duncan Oil Co
- Duncan Oil Co
- Duncan Oil Co
- Dune Oil Inc
- Dunigan Operating Co
- Dunigan Operating Co
- Dunn Tom Oil Co
- Dunne Equities
- Duruisseau Oil
- DWR Oil Co
- DWR Oil Co
- Dynatech Resource Corp
- Dyne Oil & Gas Inc
- Dynegy Inc
- Dynegy Midstream
- Dynegy Streams
- E & P Anadarko Co
- E & P Dominion
- E & W Oil Distributing Co
- E B Ted Brooks Jr
- E B Ted Brooks Jr
- E E Yarberry
- E G Hall Oil Co
- E Og Resources Inc
- E Og Resources Inc
- E P Nisbet Oil Co
- E R Bahan Testamentary Trust
- E S Investments Inc
- E S Investments Inc
- E W Moran Drilling Co
- E W Moran Drilling Co
- Eagle Energy Inc
- Eagle Energy Inc
- Eagle Oil & Gas
- Eagle Oil & Gas Co
- Eagle Oil & Gas Co
- Eagle Oil & Gas Co
- Eagle Oil & Gas Co
- Eagle Oil Co
- Eagle Petroleum Inc
- Eagle Petroleum Inc
- Eagle Resources
- Eagle River Kukanich Oil Co
- Eagle River Texas Oil LLC
- Eagleville Oil Co
- Earl T Smith & Assoc
- Earle M Craig Jr Corp
- Earnheart Oil Co Inc
- Eason Petroleum Co
- East Resources
- East Resources Inc
- East Resources Inc
- East Resources Inc
- East Resources Inc
- East Resources Inc
- East Resources Inc Exploration
- East Resources Inc Exploration
- East Tennessee Consultants
- East Tennessee Natural Gas
- East Texas Oil Field Constr
- Eastern NM Natural Gas Assoc
- Eastern Oil Co
- Eastern States Oil
- Eastern States Oil & Gas
- Eastern States Oil & Gas
- Eastern States Oil & Gas
- Eastern States Oil & Gas Inc
- Eastern States Oil & Gas Inc
- Eastern States Oil & Gas Inc
- Eastern States Oil & Gas Inc
- Eastern States Oil & Gas Inc
- Easton Oil Co
- Easy Oil
- Ebr Energy LP
- Echo Drilling Inc
- Echo Production Inc
- Echo Production Inc
- Economy Oil
- Economy Propane
- Edco Producing Inc
- Eddins-Walcher Oil Co
- Eddins-Walcher Oil Co
- Edge Location
- Edible Oil Trading Co
- Edmiston Oil Co
- Edmiston Oil Co Inc
- Edward E Rue Inc
- Edward E Rue Inc
- Edward E Rue Inc
- Edwards Oil Co
- Egan Hub Partners
- Egolf Co
- Eighty-Eight OIL LLC
- Eighty-Six Oil Co Inc
- Eise Oil Co
- Eise Oil Co
- El Dorado Exploration
- El Dorado Exploration
- El Paso Natural Gas Co
- El Paso Natural Gas Co
- El Paso Natural Gas Co
- El Paso Oil & Gas
- El Paso Oil & Gas Productions
- El Paso Oil & Gas Productions
- El Paso Oil & Gas Productions
- El Paso Production
- El Paso Production
- El Paso Production GOM
- El Paso Productions
- Eland Energy
- Eland Energy Inc
- Elco Oil LLC
- Eldorado Inc
- Electric Vehicle Progress
- Elgin Oil Co
- Elliott Oil Co
- Elliott-Ten Eyck LTD
- Ellis Properties
- Ellis-Johnson Engineering
- Elmax Oil & Gas Corp
- Elmax Oil & Gas Corp
- Elmer Oelze Jr Oil LLC
- Elnora Oil Co
- Elson Oil Co
- Elston Oil
- Elstro Oil Products Inc
- Ely Roberts & Sons Inc
- Elysium Energy
- Elysium Energy
- Elysium Energy
- Elysium Energy
- Elysium Energy
- Elysium Energy
- Elysium Energy LLC
- Emax Oil Co
- Embassy Oil Co
- Embassy Oil Co
- Embassy Oil Co
- Emco Oil Co Inc
- Emco Oil Co Inc
- EMCO Operating Inc
- Emerald Oil
- Emerald Oil Co
- EMH Oil & Chemical
- Emjayco KERN Bluff
- Emmart Oil
- Emmery Hudson
- Emmet Oil Co Inc
- Emphasis Oil Operations
- Empire Oil & Gas
- Empire Oil & Gas
- Empire Oil & Gas Inc
- Empress Gas Corp LTD
- Emuniversal Oil
- Enbridge Pipeline
- Encana Oil & Gas
- Encana Oil & Gas USA
- Encana Oil & Gas USA
- Encana Oil & Gas USA Inc
- Encanta Oil & Gas
- Encore Acquisition Co
- Encore Energy Inc
- Encore Operating
- Encore Operating
- Encore Operating Co
- Encore Operating LP
- End Of The Trail Reclaiming
- Endeavor Energy
- Endeavor Energy
- Endeavor Energy Resources
- Endeavor Energy Resources
- Endeavor Oil LLC
- Enerco Operating Corp
- Enerfin Resource Northwest
- Enerfin Resources Co
- Enerfin Resources Co
- Enerfin Resources Co
- Energen Resources
- Energen Resources Corp
- Energen Resources Corp
- Energen Resources Corp
- Energy Acquisition Corp
- Energy Acquistion Inc
- Energy Authority
- Energy Cooperative
