| 1001 | Richard Oil Comp | | Oil Operator | Mar 1992 |
| 1002 | Richard P. Kelter | | Oil & Gas Operator | Dec 1996 |
| 1003 | Richard Steltzner | | Gas Operator | Dec 1992 |
| 1004 | Richard T. Perry | | Gas Operator | May 1993 |
| 1005 | Richard W Thompson Inc | Plano, TX 75075 | Oil & Gas Operator | Jul 2019 |
| 1006 | Richard Young & Associates | | Oil & Gas Operator | Dec 2004 |
| 1007 | Richard'S Texas Tea | Rockdale, TX 76567 | Oil Operator | Jul 2025 |
| 1008 | Richards Drilling Co | Venango, PA 16440-1123 | Oil & Gas Operator | Dec 2015 |
| 1009 | Richards, Michael Dewain | Graham, TX 76450 | Oil & Gas Operator | Apr 2011 |
| 1010 | Richards, Tot Dozer, Inc. | Throckmorton, TX 76483 | Oil & Gas Operator | May 2013 |
| 1011 | Richards, Tot Oil Co. | Abilene, TX 79601 | Oil & Gas Operator | Jul 2025 |
| 1012 | Richardson And Son , Inc. | Winfield, KS 67156 | Oil Operator | Mar 2025 |
| 1013 | Richardson County Crude Inc. | | Oil Operator | Dec 2024 |
| 1014 | Richardson Developments | | Oil Operator | Feb 2025 |
| 1015 | Richardson Energy Corporation | | Oil & Gas Operator | Dec 1987 |
| 1016 | Richardson J Mar | | Oil & Gas Operator | Apr 1995 |
| 1017 | Richardson Oil | | Oil & Gas Operator | Dec 2019 |
| 1018 | Richardson Oil Company | San Antonio, TX 78216 | Oil & Gas Operator | Aug 2003 |
| 1019 | Richardson Oil Operating | | Oil & Gas Operator | Dec 2009 |
| 1020 | Richardson Operating Company | Denver, CO 80237 | Oil & Gas Operator | Jun 2025 |
| 1021 | Richardson Resources Inc | Brownwood, TX 76804 | Oil & Gas Operator | Jul 2025 |
| 1022 | Richardson WM S | Duncan, OK 73533 | Oil Operator | Jun 2013 |
| 1023 | Richardson, Bud II | Graham, TX 76450 | Oil & Gas Operator | Jul 2025 |
| 1024 | Richardson, Marshall T. | Midfield, TX 77458 | Oil & Gas Operator | Jul 2025 |
| 1025 | Richart Oil Company Inc | Oklahoma City, OK 73154-0631 | Oil & Gas Operator | Aug 1995 |
| 1026 | Richey Heartsill | | Oil Operator | Feb 1991 |
| 1027 | Richey Operating, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Jul 2025 |
| 1028 | Richey Properties, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Jul 2025 |
| 1029 | Richey, Ray Management Co., Inc. | Fort Worth, TX 76108 | Oil & Gas Operator | Jul 2025 |
| 1030 | Richlan Drilling | | Oil Operator | Dec 1994 |
| 1031 | Richlan Drilling, A General Partnership | Beaver, KS 67525 | Oil & Gas Operator | Mar 2025 |
| 1032 | Richland Energy Corporation | Tulsa, OK 74103-4441 | Oil Operator | Jul 1995 |
| 1033 | Richland Energy, Inc. | Irving, TX 75063 | Oil & Gas Operator | Jul 2025 |
| 1034 | Richland Oil Investments, LLC | Palco, KS 67657 | Oil Operator | Mar 2025 |
| 1035 | Richland Resources Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Jul 2025 |
| 1036 | Richland Resources, Inc. | | Oil & Gas Operator | Aug 1990 |
| 1037 | Richman Petroleum Corp. | Grapevine, TX 76051 | Oil & Gas Operator | Jul 2006 |
| 1038 | Richmond Drilling Company | Midland, TX 79705 | Oil & Gas Operator | Apr 2017 |
| 1039 | Richmond Operating Company | Midland, TX 79707 | Oil & Gas Operator | Feb 2007 |
| 1040 | Richmond Petroleum Inc. | Amarillo, TX 79105 | Oil & Gas Operator | Aug 2003 |
| 1041 | Richter Ervin E | | Oil & Gas Operator | Dec 2009 |
| 1042 | Richter Operating Company | San Antonio, TX 78217 | Oil & Gas Operator | Dec 2007 |
| 1043 | Rick & Sons Oil LLC | Warren, PA 16365-3561 | Oil & Gas Operator | Dec 2024 |
| 1044 | Rick Parrish & Family Contractors Inc | Albany, KY 42602 | Oil Operator | Dec 2023 |
| 1045 | Rick Pulliam Oil & Gas Inc | Bristow, OK 74010 | Oil & Gas Operator | Apr 2025 |
| 1046 | Rick'S Well Service | Cherryvale, KS 67335 | Oil & Gas Operator | Apr 2023 |
| 1047 | Rick-Rod Oil Company, Inc | Columbia, KY 42728 | Oil Operator | Dec 2022 |
| 1048 | Rick-Rod Well Services Co | | Oil Operator | Dec 2013 |
| 1049 | Rickaway Energy, Corp. | Pleasanton, TX 78064 | Oil & Gas Operator | Jul 2025 |
| 1050 | Rickerson, Russell | Rantoul, KS 66079 | Oil Operator | Mar 2025 |
| 1051 | Ricks & Ricks Oil Producers | | Oil Operator | Sep 1983 |
| 1052 | Ricks Consulting LLC | Copan, OK 74022 | Oil Operator | Mar 2025 |
| 1053 | Ricks Expl Acquisition Corp | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2004 |
| 1054 | Ricks Expl Acquisition LLC | Midland, TX 79701 | Oil & Gas Operator | Aug 2013 |
| 1055 | Ricks Exploration Co | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 1056 | Ricks Exploration, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2008 |
| 1057 | Rico Oil Company | Graham, TX 76450 | Oil & Gas Operator | Jul 2025 |
| 1058 | Ricochet Energy, Inc. | San Antonio, TX 78258 | Oil & Gas Operator | Jul 2025 |
| 1059 | Ricon Petroleum Company | Shamrock, TX 79079 | Oil & Gas Operator | Mar 2008 |
| 1060 | Ricotta, Deborah | Lancaster, NY 14043 | Gas Operator | Dec 2024 |
| 1061 | Riddle Engineering Corp. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Jul 2011 |
| 1062 | Riddle William T | Haskell, OK 74436-1353 | Oil & Gas Operator | Feb 2014 |
| 1063 | Riddle, James O | Albany, KY 42602 | Oil Operator | Dec 2023 |
| 1064 | Riddle, William D | | Oil & Gas Operator | Dec 2021 |
| 1065 | Rider Oil & Gas | | Oil Operator | Aug 1991 |
| 1066 | Rider, Don C. | Medicine Lodge, KS 67104 | Gas Operator | Mar 2000 |
| 1067 | Rider, Scott A. | East Aurora, NY 14052 | Gas Operator | Dec 2024 |
| 1068 | Ridge Energy Partners LLC | Casper, WY 82601 | Oil Operator | Dec 2018 |
| 1069 | Ridge Oil & Gas, LLC | Plano, TX 75024 | Oil & Gas Operator | Apr 2025 |
| 1070 | Ridge Oil And Gas Inc | Zanesville, OH 43702-2534 | Oil & Gas Operator | Dec 2024 |
| 1071 | Ridge Oil Company | Breckenridge, TX 76424 | Oil & Gas Operator | Jul 2025 |
| 1072 | Ridge Petroleum Inc. | Tyler, TX 75701 | Oil & Gas Operator | Jul 2025 |
| 1073 | Ridge Runner Properties Of N.Y. L.L.C | Pavilion, NY 14525 | Gas Operator | Dec 2024 |
| 1074 | Ridge Runner Resources Operating, LLC | Midland, TX 79705 | Oil & Gas Operator | Oct 2020 |
| 1075 | Ridgelake Energy, Inc. | | Oil & Gas Operator | Jul 2020 |
| 1076 | Ridgeland Energy, LLC | Pinch, WV 25156 | Oil & Gas Operator | Dec 2021 |
| 1077 | Ridgeland Wyoming Inc | | Oil Operator | Dec 2014 |
| 1078 | Ridgeline Energy Inc. | Miami, FL 33130 | Oil & Gas Operator | Jul 2025 |
| 1079 | Ridgeline Resources, LLC | Midland, TX 79702 | Oil & Gas Operator | Jul 2025 |
| 1080 | Ridgemar Energy Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Jul 2025 |
| 1081 | Ridgeview Gas & Oil Inc | Templeton, PA 16259-4505 | Oil & Gas Operator | Dec 2024 |
| 1082 | Ridgeview Gas Co | Templeton, PA 16259-4505 | Oil & Gas Operator | Dec 2010 |
| 1083 | Ridgeway Arizona Oil Corp. | Houston, TX 77079 | Oil & Gas Operator | May 2025 |
| 1084 | Ridgeway Exco, Inc. | San Antonio, TX 78279 | Oil & Gas Operator | Mar 1996 |
| 1085 | Ridgeway Resources | Barberton, OH 44203 | Oil & Gas Operator | Dec 2012 |
| 1086 | Ridglea Energy I, LLC | Spring, TX 77379 | Oil & Gas Operator | Jul 2025 |
| 1087 | Ridgway Realty & Land Inc | University Heights, OH 44118-3818 | Oil & Gas Operator | Dec 2019 |
| 1088 | Ridley Oil Corporation | Tyler, TX 75702 | Oil & Gas Operator | Nov 1996 |
| 1089 | Rierson Energy, LLC | McPherson, KS 67460 | Oil & Gas Operator | Mar 2025 |
| 1090 | Rierson, Joe | McPherson, KS 67460 | Oil Operator | Mar 2025 |
| 1091 | Rietz John T & Co Inc | | Oil & Gas Operator | Mar 1992 |
| 1092 | Rif Raf Inc | Norman, OK 73069 | Oil Operator | May 1999 |
| 1093 | Rife Energy Operating, Inc. | Fort Worth, TX 76116 | Oil & Gas Operator | Jul 2025 |
| 1094 | Rife Oil Properties Inc | Fort Worth, TX 76107 | Oil & Gas Operator | Jul 2025 |
| 1095 | Rife Operating, LTD. | Fort Worth, TX 76107 | Oil & Gas Operator | Oct 2005 |
| 1096 | Rife, Bud Dba B & S Gas & Oil Co | Harold, KY 41635 | Oil & Gas Operator | Dec 2023 |
| 1097 | Rife, M. O., Jr. | Fort Worth, TX 76107 | Oil & Gas Operator | Dec 1998 |
| 1098 | Rig 6 Drilling Co., Inc. | Bronson, KS 66716 | Oil Operator | Oct 2019 |
| 1099 | Rig II LLC | Woods Cross, UT 84087 | Oil & Gas Operator | May 2018 |
| 1100 | Rig Iron Petroleum Inc | | Oil & Gas Operator | Aug 1988 |