| 1101 | Rine Drilling Co | | Oil & Gas Operator | Mar 1994 |
| 1102 | Rine Drillingand Exploration, Inc. | Wichita, KS 67202 | Gas Operator | Dec 2009 |
| 1103 | Rine Exploration | | Oil & Gas Operator | Jul 1994 |
| 1104 | Rine Exploration Co. | | Oil Operator | Jul 1988 |
| 1105 | Ring Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |
| 1106 | Ringer Oil Co Inc | | Oil & Gas Operator | Aug 1989 |
| 1107 | Ringneck Resources, LLC | Tulsa, OK 74135 | Gas Operator | Dec 2023 |
| 1108 | Ringo Rig LLC | Coleman, TX 76834 | Oil & Gas Operator | Apr 2024 |
| 1109 | Ringwood Gathering Co | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2023 |
| 1110 | Rio Blanco Energy, Inc. | Littleton, CO 80121 | Oil & Gas Operator | Oct 2002 |
| 1111 | Rio Blanco Operating LLC | Victoria, TX 77904 | Oil & Gas Operator | Dec 2023 |
| 1112 | Rio Bravo Expl. & Prod. Co. | Houston, TX 77055 | Oil & Gas Operator | Apr 2020 |
| 1113 | Rio Bravo Oil Company | The Woodlands, TX 77381 | Oil & Gas Operator | Feb 2002 |
| 1114 | Rio Bravo Poso | | Oil & Gas Operator | Dec 2009 |
| 1115 | Rio Bravo Royalty Co. | Bandera, TX 78003 | Oil & Gas Operator | Aug 2003 |
| 1116 | Rio Chama Petroleum, Inc | Pagosa Springs, CO 81147 | Oil & Gas Operator | Apr 2004 |
| 1117 | Rio Energy | Houston, TX 77067 | Oil Operator | Apr 2024 |
| 1118 | Rio Grand Exploration, LLC | San Antonio, TX 78216 | Oil & Gas Operator | Apr 2024 |
| 1119 | Rio Grande Drilling Company | San Antonio, TX 78212 | Oil & Gas Operator | Dec 1999 |
| 1120 | Rio Grande E&P II, LLC | Houston, TX 77092 | Gas Operator | Apr 2024 |
| 1121 | Rio Grande E&P, LLC | Houston, TX 77024 | Gas Operator | May 2022 |
| 1122 | Rio Interstate Oil, Inc. | Oklahoma City, OK 73189 | Oil & Gas Operator | Sep 1994 |
| 1123 | Rio Mesa Resources Inc | | Oil & Gas Operator | Jul 2022 |
| 1124 | Rio O & P LLC | Pasadena, TX 77504 | Oil Operator | Apr 2024 |
| 1125 | Rio Oil And Gas (Permian) II,LLC | The Woodlands, TX 77382 | Oil & Gas Operator | Apr 2024 |
| 1126 | Rio Petroleum, Inc. | Amarillo, TX 79102 | Oil & Gas Operator | Apr 2024 |
| 1127 | Rio VIsta Operating LLC | Eufaula, OK 74432-0789 | Gas Operator | Dec 2023 |
| 1128 | Rio-Tex, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Apr 2024 |
| 1129 | Ripco | | Oil & Gas Operator | Jul 1986 |
| 1130 | Rippy Branch Oil Co. | Grandfalls, TX 79742 | Oil & Gas Operator | Apr 2022 |
| 1131 | Rippy Oil Company | Tyler, TX 75702 | Oil & Gas Operator | Apr 2024 |
| 1132 | Riptide Energy LLC | Austin, TX 78701 | Oil & Gas Operator | Apr 2024 |
| 1133 | Risco La Sara Operations, LLC | Houston, TX 77056 | Oil & Gas Operator | Aug 2014 |
| 1134 | Rise Petroleum Investments LLC | Spring, TX 77386 | Oil & Gas Operator | Apr 2024 |
| 1135 | Riseden Services, Inc. | Houston, TX 77256 | Oil & Gas Operator | Sep 1997 |
| 1136 | Riseden, LTD | | Oil & Gas Operator | Nov 1989 |
| 1137 | Risher Company, Inc. | | Oil & Gas Operator | Jul 2001 |
| 1138 | Rising Star 2000 Oil & Gas, Inc. | | Oil Operator | Dec 2023 |
| 1139 | Rising Star Energy PTR, L.L.C. | Dallas, TX 75219 | Oil & Gas Operator | Apr 2024 |
| 1140 | Rising Star Energy, L.L.C. | Dallas, TX 75219 | Oil & Gas Operator | Aug 2006 |
| 1141 | Rising Star Energy-Oper Co., LLC | | Oil & Gas Operator | Nov 2006 |
| 1142 | Rising Star Petroleum, L.L.C. | Dallas, TX 75219 | Oil & Gas Operator | Apr 2010 |
| 1143 | Rissman Lease Operating | Oklahoma City, OK 73116 | Oil Operator | Dec 1996 |
| 1144 | Ristau Ricky J | Warren, PA 16365-3560 | Oil & Gas Operator | Dec 2023 |
| 1145 | Rister Oil&Gas International LLC | Eastland, TX 76448 | Oil & Gas Operator | Apr 2024 |
| 1146 | Rister, Dewey | Avoca, TX 79503 | Oil & Gas Operator | Apr 2024 |
| 1147 | Ritchie C Stewar | | Oil Operator | Aug 1982 |
| 1148 | Ritchie Explorat | | Oil & Gas Operator | Dec 1996 |
| 1149 | Ritchie Exploration | | Oil Operator | Aug 1995 |
| 1150 | Ritchie Exploration, Inc. | Wichita, KS 67278 | Oil & Gas Operator | Jan 2024 |
| 1151 | Ritchie Petroleum Corporation, Inc. | Pennsboro, WV 26415-0000 | Oil & Gas Operator | Dec 2021 |
| 1152 | Ritchie, A. Scott | Wichita, KS 67202 | Oil Operator | Mar 1988 |
| 1153 | Ritchie, H. G. Jr. | Taft, TX 78390 | Oil & Gas Operator | Apr 2024 |
| 1154 | Ritco, Inc | Jane Lew, WV 26378 | Oil & Gas Operator | Dec 2021 |
| 1155 | Rittenhouse Oil & Gas Co. | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |
| 1156 | Ritter Properties, LTD. | Fredericksbrg, TX 78624 | Oil & Gas Operator | Apr 2024 |
| 1157 | Ritter, Laber & Associates, Inc. | Williston, ND 58802 | Oil & Gas Operator | Jan 2024 |
| 1158 | Rivendell Group LLC | | Oil Operator | Sep 2018 |
| 1159 | River Bend Oil Company, Inc. | Crane, TX 79731 | Oil Operator | Jun 2013 |
| 1160 | River Bend Operating, Inc. | | Oil & Gas Operator | Jul 1999 |
| 1161 | River City Resources, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Nov 1997 |
| 1162 | River Energy Co., Inc. | | Gas Operator | Dec 2012 |
| 1163 | River Gas Co | Marietta, OH 45750 | Oil & Gas Operator | Dec 1993 |
| 1164 | River Gas Corporation | Tuscaloosa, AL 35406-2233 | Gas Operator | Dec 2000 |
| 1165 | River Gas Of Utah Inc | Northport, AL 35476 | Gas Operator | Feb 1995 |
| 1166 | River Ridge Gravel Co | Meadville, PA 16335-9149 | Oil Operator | Dec 2023 |
| 1167 | River Road Production, LLC | Hays, KS 67601 | Oil Operator | Feb 1997 |
| 1168 | River Rock Operating LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Dec 2023 |
| 1169 | River Rouge Minerals | | Oil & Gas Operator | Dec 2023 |
| 1170 | River Rouge Minerals Inc | | Oil & Gas Operator | Mar 1981 |
| 1171 | River Valley Energy Inc | Little Hocking, OH 45742 | Oil & Gas Operator | Dec 2023 |
| 1172 | River Valley Oil LLC | | Oil Operator | Jan 2024 |
| 1173 | Rivercity Operating, Inc. | Austin, TX 78766 | Oil & Gas Operator | Apr 2024 |
| 1174 | Riverfront Exploration LLC | Fort Smith, AR 72901 | Gas Operator | Jan 2024 |
| 1175 | Riveria Drilling | | Oil Operator | Aug 1984 |
| 1176 | Riverine, L.C. | Kilgore, TX 75663 | Oil & Gas Operator | Nov 2021 |
| 1177 | Rivershore Operating LLC | Dallas, TX 75206 | Oil & Gas Operator | Apr 2024 |
| 1178 | Riverside Energy Michigan LLC | | Oil & Gas Operator | Nov 2023 |
| 1179 | Riverside Oil & Gas, Inc | Burkesville, KY 42717 | Oil Operator | Dec 2016 |
| 1180 | Riverside Petrol | | Oil Operator | Sep 1995 |
| 1181 | Riverside Petroleum & Prod. | Oxford, MS 38655 | Oil & Gas Operator | Dec 2020 |
| 1182 | Riverside Resources, Inc. | | Oil & Gas Operator | Oct 2015 |
| 1183 | Riverstone Energy LLC | | Oil & Gas Operator | Jan 2024 |
| 1184 | Riverstone Energy Operating, LLC | Houston, TX 77090 | Oil & Gas Operator | Apr 2024 |
| 1185 | Rives Owen H | Holdenville, OK 74848-0913 | Oil & Gas Operator | Nov 2000 |
| 1186 | Riviera Drilling & Exploration Company | | Oil & Gas Operator | Sep 2013 |
| 1187 | Riviera Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Jan 2024 |
| 1188 | Rixleben Jeffrey | West Chicago, IL 60186-0978 | Oil Operator | Feb 2016 |
| 1189 | Rixleben Thomas B Estate | Ada, OK 74820 | Oil & Gas Operator | Mar 2014 |
| 1190 | RJ Energy, LLC | Garnett, KS 66032 | Oil Operator | Dec 2023 |
| 1191 | RJ Schreiner SR | Freedom, PA 15042-9353 | Oil & Gas Operator | Dec 2015 |
| 1192 | RJ Williams Oil & Gas LLC | Ardmore, OK 73402-1931 | Oil & Gas Operator | Dec 2023 |
| 1193 | Rja Energy LLC | | Oil & Gas Operator | Feb 2024 |
| 1194 | RJD Management Co., Inc. | Lubbock, TX 79408 | Oil & Gas Operator | Apr 2024 |
| 1195 | RJKB Foster Operating LLC | New Braunfels, TX 78132 | Oil & Gas Operator | Apr 2024 |
| 1196 | RJM Company | Claflin, KS 67525 | Oil & Gas Operator | Dec 2023 |
| 1197 | RJM Oil Company, LLC | Irving, TX 75060 | Oil Operator | Apr 2024 |
| 1198 | RK Oil Production | Post, TX 79356 | Oil & Gas Operator | Jun 2023 |
| 1199 | Rki Energy Resources, LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Jun 2021 |
| 1200 | Rki Exploration & Production LLC | Tulsa, OK 74172 | Oil & Gas Operator | Apr 2024 |