- Daniel H Finnefrock
- Daniel J Kostrzewa
- Daniel J Kostrzewa
- Daniel Resources Development
- Daniel Wolf Oil Properties
- Dansk Operating
- Dar
- Darnell Drilling Inc
- Dart Energy Corp
- Dart Oil & Gas Corp
- Dart Oil & Gas Corp
- Dart Oil & Gas Corp
- Dart Oil & Gas Corp
- Dart Oil Co
- Dau Co Petroleum Corp
- Daube Co
- Daube Oil Co
- Daubert Oil & Gas Co
- Daubert Oil & Gas Co
- Daugherty Petroleum Inc
- Daveco Production Inc
- David A Metts Oil & Gas
- David Albert Oil & Gas
- David Bieber
- David C Cotner & Assoc
- David E Fite Oil & Gas
- David M Nentwig
- David Miller Oil & Gas
- David Miller Oil Properties
- David R Hill Inc
- Davis Gulf Coast Inc
- Davis Offshore
- Daystar Oil & Gas Corp
- Daystar Resources
- DBP Exploration
- DBR Fluid Properties
- DBR Fluid Properties
- DCS Fluid Solutions
- DCS Fluid Solutions
- DDD Exploration Inc
- De Vries Intl
- De Vries Intl
- Dean Energy
- Decker Exploration Inc
- Dee-Jay Exploration Co
- Deep Ocean Tools Inc
- Deep Rock Exploration Inc
- Dei Energy Inc
- Deka Exploration Inc
- DEKALB Energy Tower
- DEKALB Energy Tower
- Del Rey Capital Inc
- Delmarva Industries Inc
- Delphi International Inc
- Delta Oil & Gas LLC
- Delta Petroleum Corp
- Delta Petroleum Corp
- Delta Petroleum Corp
- Deltana Energy
- Denali Oil & Gas Mgmt LLC
- Denbury Resources Inc
- Denbury Resources Inc
- Denbury Resources Inc
- Denbury Resources Inc
- Denbury Resources Inc
- Denbury Resources Inc
- Denbury Resources Inc
- Denex Petroleum Corp
- Dennis Gunther CPL Land Svc
- Dennis J Bowles Corp
- Dennis J Bowles Corp
- Dennis J Eimers
- Denton Exploration
- Denton Exploration
- Derby Operating Corp
- Derksen Exploration Ventures
- Dernick Resources Inc
- DESCO Oil Co
- Deutsch Exploration Corp
- Deutsch Oil Co
- Devon
- Devon
- Devon
- Devon Energy Corp
- Devon Energy Corp
- Devon Energy Corp
- Devon Energy Corp
- Devon Energy Corp
- Devon Energy Corp
- Devon Energy Corp
- Devon Energy Corp
- Devon Energy Corp
- Devon Energy Corp
- Devon Energy Corp
- Devon Energy Corp
- Devon Energy Retirement Svc
- Devon Louisiana Co
- DEW-Tech
- Dewbre Petroleum Corp
- DGH Petroleum Inc
- Diamond Back Exploration
- Diamondback Directional
- Diamondback Oil Partner
- Diasu Oil & Gas Co Inc
- Diasu Oil & Gas Co Inc
- Dickie Energy Investments
- Dickie Energy Investments
- Dillco Co
- Dimension Energy Co
- Dingus Investments
- Direct Geochemical
- Discovery Energy Inc
- Discovery Exploration Inc
- Discovery Geo
- Discovery Geo
- Diversified Energy Investments
- Diversified Land & Exploration
- Diversified Land & Exploration
- Diversified Operating Corp
- Diversified Resources Inc
- DLH Energy Svc LLC
- DMI Camp
- DMS Oil Co
- DMS Oil Co
- DNR Oil & Gas Inc
- Dolar Energy LLC
- Dolch Oil & Gas
- Dolch Oil & Gas
- Dolphin Petroleum LLC
- Dolphin Petroleum LLC
- Dolphin Petroleum LP
- Domain Energy
- Dome Drilling Co
- Dome Energicorp
- Dominion Black Warrior Basin
- Dominion Energy & Minerals
- Dominion Exploration
- Dominion Exploration & Prdctn
- Dominion Exploration & Prdctn
- Dominion Exploration & Prdctn
- Dominion Exploration & Prdctn
- Dominion Exploration & Prdctn
- Dominion Exploration & Prdctn
- Dominion Exploration & Prdctn
- Dominion Exploration & Prdctn
- Dominion Minerals Corp
- Don Moore
- Donald N Ewan
- Dorado Exploration Inc
- Double B Operating Inc
- Double Eagle Exportation
- Double Eagle Ranch
- Double Eagle Resources
- Double R Oil Co
- Double Star Energy
- Double Star Energy
- Dougherty-Jarvis Properties
- Doughtie Exploration
- Doughtie Exploration
- Doughtie Exploration Co
- Douglas B Mc Callum
- Douglas B Watkins
- Douglas Exploration Shop
- Douglas L Cone
- Douglas L Cone
- Douglas Oil & Gas
- Douglass Dietz & Daley Inc
- Dove Petroleum Inc
- Dover Atwood Corp
- Dover Technology Inc
- Dover Technology Inc
- Doyle Land Svc
- Dragoon Oil & Gas
- Dragoon Oil & Gas
- Drenco Oil & Gas
- Drill Mar
- Drill Mar
- Drillinginfo Inc
- Drillinginfo Inc
- DSTJ Corp
- DSTJ Corp
- Dual Resources Inc
- Dubai Natural Gas
- Dubai Natural Gas
- Duck Creek Energy Inc
- Dudley & Assoc LLC
- Duer Wagner & Co
- Dufour Petroleum Inc
- Dufour Petroleum Inc
- Duke Energy Field Svc
- Duke Energy Field Svc
- Duke Energy Field Svc
- Duke Energy Field Svc
- Duncan Oil & Gas Inc
- Duncan Oil Co
- Duncan Oil Co
- Duncan Oil Co
- Duncan Oil Properties Inc
- Duphil
- Durango Pipeline Corp
- Dutcher & Co Inc
- Dynamic Exploration Inc
- Dynasty Exploration
- Dynasty Exploration
- Dyne Exploration Co
- Dzurik Interest Inc
- E & P Carter
- E Lyle Johnson Inc
- E N Smith III
- E N Smith III Energy Corp
- E R Operating Co
- E Seis Inc
- E Seis Inc
- E-Tex Production Co
- Eagle Creek Corp
- Eagle Exploration
- Eagle Investment Co
- Eagle Oil & Gas Co
- Eagle Operating Inc
- Eagle Production & Development
- Eagle Resources Inc
- Eagle River Energy Corp
- Earlsboro Energies Corp
- Earnest Producing Corp
- Earth Science Explorations Inc
- Earth Science Explorations Inc
- Eason Production Co
- East Resources Inc
- East Texas Energy Partners
- East Texas Energy Partners
- Eastern American Energy Corp
- Eastern American Energy Corp
- Eastern American Energy Corp
- Eastern American Energy Corp
- Eastern American Energy Corp
- Eastern Energy Corp
- Eastern Mineral Co
- Eastern Mountain Fuel Inc
- Eastern Oil Well Svc Co
- Eastern Reserve Development
- Eastern States Oil & Gas
- Eastern States Oil & Gas
- Eastern States Oil & Gas Inc
- Eastex Crude Co
- Eastex Geological Consultants
- Eastex Operating
- Eastland Exploration Inc
- Easyread Data Svc
- Easyread Data Svc
- EBS Oil & Gas Partners LLC
- Eci Engineering Concepts Intl
- Eckels Office
- Ed Broome Inc
- Ed Bush
- Ed Bush
- Ed Collins Inc
- Ed Stillie
- EDC
- Eddie Mayo Oil Properties
- Eddie Mayo Oil Properties
- EDG Resources Inc
- Edge Petroleum Corp
- Edge Petroleum Corp
- EDI Investments
- Edible Oil Svc Inc
- Edmar Oil & Gas
- Edmund T Anderson IV
- Edward Mike Davis LLC
- Edwards Trust
- Edwards Trust
- Edwin Nichols Explorations
- EEC Inc
- EESI
- EGL Resources
- Egret Operating Co
- Eiland Natural Resources
- El Paso Corp
- El Paso Energy
- El Paso Field Svc
- El Paso Field Svc
- El Paso Production
- El Paso Production
- El Paso Production Co Inc
- El Paso Production Inc S
- El Toro Oil Co
- Electric Power Options
- Electro-Seise Inc
- Electro-Seise Inc
- Electro-Seise Inc
- Elexco Land Svc Inc
- Elf Exploration
- Elf Exploration
- Elite Seismic Processing
- Elk Resources Inc Oil & Petro
- Elkhead Oil & Gas
- Elliot Oil & Gas
- Elliott Oil & Gas
- Elliott Oil & Gas
- Ellis Exploration Inc
- Ellis Land & Development
