- 4-Sight Operating Co
- 7711 Corp
- A G Talbot Co
- A J Frazier Estate
- A J Frazier Estate
- A W Dugan
- Abercrombie Energy
- Abernathy Exploration Co
- Abernathy Exploration Co
- ADUI Legal Defense
- Aladdin Petroleum Corp
- Alarm
- Allen Petroleum Inc
- Alta Mesa Resources Inc
- American Atlas Resource Corp
- Aminek USA
- Aminek USA
- Aminex USA Inc
- Aminex USA Inc
- Ammonite Energy Texas Inc
- Ams-Oil Synthetic Motor Oils
- Amsoil Synthetic Oils
- Amtex Energy Inc
- Aransas Petroleum Co
- Aransas Petroleum Co
- Arena Resources Inc
- Argent Energy Inc
- Arlen G Howle Jr
- Arrow Oil & Gas Inc
- Arrow Petroleum Co
- Arrow Petroleum Co
- Arrowhead Energy Explor Co
- Ashburton LTD
- Atex Exploration & Operating
- Atlantic Operating Inc
- Atlas Oil Inc
- Aubrey C Black
- Aven Gas Oil Inc
- Avra Oil Co
- AWP Operating Co
- Aztec Oil Co
- B & B Operating Co
- B & D Enterprises
- B C Operating
- B D Production Co
- B Glickman
- B Glickman
- B T Operating Co
- B-P Investments LTD
- Baker Resources
- Bankhead Operating Corp
- Bankhead Operating Corp
- Bankhead Operating Corp
- Bankhead Operating Corp
- Bankhead Operating Corp
- Barbee Inc
- Barbee Inc
- Barker Drilling & Production
- Baron Petroleum
- Bass Enterprises Production Co
- Bayou Operating Co Inc
- Bayou Operating Co Inc
- Beamer Resources
- Bear Petroleum
- Bedwell Petroleum Corp
- Ben Laird Estate
- Bennett & Schulte Oil Co
- Bennett Mills Estate
- Benson Mc Cown & Co
- Bentley Oil & Gas Co
- Bentley Oil & Gas Co
- Berexco Permian LLC
- Bill W Murphy Operating Co
- Blair-Vreeland
- Blue Star Energy
- Blueridge Resources
- Bo Mc Resources Corp
- Bob Cantrell Enterprises
- Bob Kellerman Oil Properties
- Bob Kellerman Oil Properties
- Bogo Energy Corp
- Bolling Oil Properties Inc
- Bolling Oil Properties Inc
- Bomar Enterprises Inc
- Bowers Office
- Bowers Office
- Boyd & Mc Williams Energy Grp
- Brahaney Drilling Co
- Brammer Engineering Inc
- Brayton Operating Corp
- Brico Oil Inc
- Bright & Co
- Brock & Strange Oil
- Brock & Strange Oil
- Brown & Dorsett Foundation
- Bruce A Wilbanks Co
- Bruce A Wilbanks Co
- Bruns Production Co
- BSE Production
- Buckeye Energy Inc
- Bud Oil Co
- Buffco Production
- Burgundy Oil & Gas Inc
- Burk Royalty Co
- Burk Royalty Co
- Burk Royalty Co
- Burk Royalty Co
- Burk Royalty Co
- Burlington Resources
- Burns Operating
- Burns Operating
- Byrom Oil Co
- C Clyde Hamblin
- C E Carroll
- C E Carroll
- C F Haas Oil & Gas Inc
- C F Qualia Operating Inc
- C J Wafford
- C L Brown III
- C R Dick Eyster
- C R Dick Eyster
- C W Resources
- C W Resources
- Caddo Pine Island Corp
- Calif Oils Corp
- Callaway Production Co
- Callery Exploration Co
- Calvert Co
- CAM Svc
- Cambrian Management
- Campana Petroleum Co
- Capitol Well Servicing
- Caraway Operating
- Carnes Exploration Co
- Carter Exploration Co
- Carter Gabriel
- Cartledge Oil Co
- Caskids Operating Co
- Catlin Oil
- CBS Operating Corp
- Cdx Gas
- Centerfire Corp
- Central Drilling Co USA
- Centuar Resources Inc
- Chance Oil Co Inc
- Charles A Dean
- Charles H Priddy
- Cher Oil Co
- Chermac Energy Corp
- Chisum Ranch
- Cholla Petroleum Inc
- Christie Gas Corp
- Cibolo Energy Operating Inc
- Cibolo Energy Operating Inc
- Cico Oil & Gas Co
- Cinco Equis Oil Co
- Cinco Equis Oil Co
- Citation Oil & Gas
- CJW Corp
- Clark Oil Co
- Clark Oil Co
- Cliff Hoskins Inc
- Clovelly Oil Co
- Co Energy Inc
- Coal Creek Minerals LLC
- Coal Oil & Gas
- Coastal Management Corp
- Coastal Management Corp
- Coastal Management West Ranch
- Coastal Production Svc
- Coates Energy Trust
- Coates Energy Trust
- Collins & Ware
- Columbus Energy Corp
- Compressor & Engine Svc
- Compressor & Engine Svc
- Comstock Oil & Gas
- Comstock Oil & Gas
- Condor Petroleum Inc
- Conoco Phillips Pipe Line Co
- Converse Oil Corp
- Cook Exploration
- Cook Exploration
- Coral Coast Petroleum
- Corlena Oil Co
- Corsair Energy
- Cory LTD
- CRI Inc
- Crouch Petroleum
- Crown Quest Operating
- Cudd Operating Corp
- Cummins & Walker Oil Co
- Curtis Hankamer Corp
- CVS Holdings Inc
- CXY Energy Inc
- CXY Energy Inc
- D & G Oil & Gas Co
- D D Morgen
- D-Bar Capitol Financial
- D-Bar Capitol Financial
- DAB Oil Svc
- DAB Oil Svc
- Dallas Production Inc
- Dalworth Oils
- Dan A Hughes Petroleum Hangar
- Darling Oil Corp
- David Frame Jr
- David H Arrington Oil & Gas
- David M Munson Inc
- Davis Co
- Davis Partners LTD
- Dawson-Markwell Exploration Co
- DDDF Co
- Dean Bros Oil & Gas Building
- Deep Rock Resources Inc
- Delphi Oil
- Delta Oil & Gas Co
- Dinero Operating Co
- Discorbis Oil Co
- Discorbis Oil Co
- Doolaree Corp
- Doran Oil Properties
- Doran Oil Properties
- Doran Oil Properties
- Dorman Anderson Oil
- Dorman Anderson Oil
- Double B Land & Cattle Co
- Double U Oil Co
- Double U Oil Co
- Doug R Hillman Assoc Inc
- Doyle G Whitaker
- Doyle Hartman
- Doyle Hartman Oil
- Draco Energy
- DSB Properties Inc
- DSB Properties Inc
- Durham Inc
- Dyad Petroleum Co
- E M Christensen Oil & Gas
- E S Boase
- Eagle Energy Inc
- Eagle Exploration Co
- Eastland Energy Group Inc
- Ed Covington
- Ed Covington
- Edant Energy Corp
- Edwin M Jones Oil Co
- Edwin M Jones Oil Co
- EKG Operating Inc
- El Ran Inc
- El Ran Inc
- El Toro Petroleum Corp
- Elder & Vaughn
- Enbridge Pipelines Toledo Inc
- Encon Services Inc
- Encon Services Inc
- Energy Alliance Co Inc
- Energy Group Inc
- Energy Search Inc
- Engr Resources
- Engroup Resources
- Engroup Resources
- Ernest Operating Co
- Ernie W Anguish
- Etoco Inc
- Etoco Inc
- Etoco Inc
- Etoco Inc
- Eucutta Petroleum Inc
- Eugene W Gill
- Eugene W Gill
- F A Wallis Properties
- F W Burger Inc
- F W Burger Inc
- Farrell Oil Co
- Feagan Energy Inc
- Fender Exploration & Prdctn
- Field Management LLC
- First Rock
- FKG Oil Co
- Flex Energy LLC
- Forman Petroleum Corp
- Forman Petroleum Corp
- Forrest Wynn
- Fossil Rock Resources
- Foster Petroleum Management
- Four R Operating
- Fourway Oil Co
- Frank Cahoon
- Frank J Hall
- Franzheim Investment Co
- Franzheim Investment Co
- Freeman Oil
- Frontier Oil Corp
- Frontier Operating Corp
- Fulton Fuel Co
- Fulton Oil Co
- G H LAND Co
- G-Square Production Inc
- Garland Minerals Corp