| 1201 | Black Mesa Energy LLC | | Oil & Gas Operator | Mar 2024 |
| 1202 | Black Mountain Oil & Gas II LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2021 |
| 1203 | Black Mountain Oil Co. | | Oil & Gas Operator | Dec 1999 |
| 1204 | Black Mountain Operating LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2024 |
| 1205 | Black Mountain Petroleum | Mogadore, OH 44260 | Oil & Gas Operator | Dec 2023 |
| 1206 | Black Mountain STX I LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2024 |
| 1207 | Black Mountain SWD LP | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2024 |
| 1208 | Black Oak Exploration, LLC | Denver, CO 80210 | Oil & Gas Operator | Feb 2024 |
| 1209 | Black Oil Company, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Jun 2010 |
| 1210 | Black Pearl Exploration, L.L.C. | Houston, TX 77095 | Oil & Gas Operator | May 2015 |
| 1211 | Black Pearl Operating Comp., LLC | Houston, TX 77057 | Oil Operator | Jun 2024 |
| 1212 | Black Petroleum | | Oil Operator | Sep 1989 |
| 1213 | Black Petroleum Company | Wichita, KS 67277 | Oil Operator | Jan 2004 |
| 1214 | Black Pool Energy, LP | Houston, TX 77070 | Oil & Gas Operator | Jun 2024 |
| 1215 | Black Raven Energy Inc | | Oil & Gas Operator | Apr 2017 |
| 1216 | Black Resources, Inc. | Granbury, TX 76049 | Oil & Gas Operator | Mar 2008 |
| 1217 | Black River Oil Corp And Golden Petroleum Corp | | Oil & Gas Operator | Dec 1989 |
| 1218 | Black River Operating LLC | Keller, TX 76248 | Oil Operator | Jun 2024 |
| 1219 | Black Rock Operating, L.L.C. | Fayette, AL 35555 | Oil & Gas Operator | Feb 2024 |
| 1220 | Black Rock Resources, LLC | Russell, KS 67665 | Oil Operator | Feb 2024 |
| 1221 | Black Sable Energy, LLC | San Antonio, TX 78209 | Oil Operator | Jan 2018 |
| 1222 | Black Sheep Oil & Gas LLC | Odessa, TX 79768 | Oil & Gas Operator | Jun 2024 |
| 1223 | Black Sheep Operating, LLC | Amarillo, TX 79109 | Oil & Gas Operator | Jun 2024 |
| 1224 | Black Snake Petroleum, LLC | | Oil & Gas Operator | Dec 2023 |
| 1225 | Black Spot Oil Company, A General Partnership | Great Bend, KS 67530 | Oil Operator | Dec 2009 |
| 1226 | Black Star Energy Inc | | Oil Operator | May 2004 |
| 1227 | Black Star Oil Company | Plano, TX 75094 | Oil & Gas Operator | Jun 2024 |
| 1228 | Black Star Petro | | Oil Operator | Jul 1995 |
| 1229 | Black Star Petroleum Corp. | Oceanside, NY 11572 | Oil Operator | Oct 1997 |
| 1230 | Black Stone Energy Company | Houston, TX 77002 | Oil & Gas Operator | Mar 2004 |
| 1231 | Black Stone Energy Company, LLC | Houston, TX 77002 | Oil & Gas Operator | Jun 2024 |
| 1232 | Black Stone Oil Company | Dallas, TX 75244 | Oil & Gas Operator | Feb 1997 |
| 1233 | Black Stone Petroleum LLC | Wichita, KS 67206 | Oil Operator | Jul 2019 |
| 1234 | Black Strata LLC | Weatherford, TX 76086 | Oil Operator | Jun 2024 |
| 1235 | Black Swan Operating, LLC | Denver, CO 80202 | Oil & Gas Operator | May 2023 |
| 1236 | Black Tea Oil, LLC | Wichita, KS 67206 | Oil Operator | Feb 2024 |
| 1237 | Black Top Operating, LLC | Midland, TX 79706 | Oil & Gas Operator | Jun 2024 |
| 1238 | Black Velvet Petro. Co. | | Oil & Gas Operator | Dec 2007 |
| 1239 | Black W K Produc | | Oil & Gas Operator | Aug 1991 |
| 1240 | Black Warrior Methane Corp. | Brookwood, AL 35444 | Gas Operator | Feb 2024 |
| 1241 | Black Wendell D | Atwood, OK 74827-9706 | Oil & Gas Operator | Jan 2009 |
| 1242 | Black'S Oil & Gas | Pampa, TX 79066 | Oil & Gas Operator | Jun 2024 |
| 1243 | Black, Frank J., Oil Operations, Inc. | Overland Park, KS 66213 | Oil & Gas Operator | Dec 2009 |
| 1244 | Black, Karl T. | Paradise, TX 76073 | Oil & Gas Operator | Aug 2003 |
| 1245 | Black-Travis, Inc. | Paola, KS 66071 | Oil Operator | Feb 2024 |
| 1246 | Blackbeard Operating East, LLC | | Oil & Gas Operator | Dec 2020 |
| 1247 | Blackbeard Operating, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Jun 2024 |
| 1248 | Blackberry Oil Company | Jennings, OK 74038-0068 | Oil & Gas Operator | Dec 2002 |
| 1249 | Blackbird Oil Co. | Great Bend, KS 67530 | Oil Operator | Feb 1996 |
| 1250 | Blackbrush O & G, Inc. | San Antonio, TX 78258 | Oil & Gas Operator | Apr 2012 |
| 1251 | Blackbrush O & G, LLC | San Antonio, TX 78259 | Oil & Gas Operator | Jun 2024 |
| 1252 | Blackburn Oil & Gas, Inc. | Kinsley, KS 67547 | Oil & Gas Operator | Sep 2004 |
| 1253 | Blackburn Operating Co., Inc. | | Oil & Gas Operator | Jun 2008 |
| 1254 | Blackcat Oil Company | Mannford, OK 74044-0286 | Oil & Gas Operator | Mar 2024 |
| 1255 | Blackfire Operating LLC | | Oil & Gas Operator | Mar 2024 |
| 1256 | Blackflat Oil Company LLC | Lubbock, TX 79424 | Oil Operator | Jun 2024 |
| 1257 | Blackhawk Energy | | Oil Operator | Dec 1993 |
| 1258 | Blackhawk Energy LLC | Greenville, KY 42345 | Oil & Gas Operator | Jan 2024 |
| 1259 | Blackhawk Explor | | Oil Operator | Jan 1990 |
| 1260 | Blackhawk Exploration, Inc. | Wichita, KS 67214 | Oil & Gas Operator | May 2020 |
| 1261 | Blackhawk Oil Co | Ottawa, KS 66067 | Oil & Gas Operator | Jan 2011 |
| 1262 | Blackhawk Production Company | | Oil Operator | Feb 2024 |
| 1263 | Blackhill Energy LLC | Canonsburg, PA 15317 | Gas Operator | Mar 2024 |
| 1264 | Blackhorn USA, LLC | Edwardsville, IL 62025 | Oil Operator | Dec 2022 |
| 1265 | Blackhorse Energy, LLC Of Texas | | Oil Operator | Jan 2024 |
| 1266 | Blackjack Oak Production LLC | Houston, TX 77057-2643 | Oil Operator | Jan 2024 |
| 1267 | Blackjack Oil & Gas, Inc. | Hennessey, OK 73742 | Oil & Gas Operator | Jun 2024 |
| 1268 | Blackjack Oil LTD | Denver, CO 80223 | Oil Operator | May 1996 |
| 1269 | Blackjack Oil, Inc. | Las Vegas, NV 89128 | Oil & Gas Operator | Nov 2019 |
| 1270 | Blackjack Operating L. L. C. | Schertz, TX 78154 | Oil Operator | Jun 2024 |
| 1271 | Blackjack Supply Company | Edmond, OK 73013-1144 | Oil & Gas Operator | May 2012 |
| 1272 | Blackland Oil & Gas | Portland, TX 78374 | Oil & Gas Operator | Aug 1997 |
| 1273 | Blackmar, Jim Oil Operator | Luling, TX 78648 | Oil & Gas Operator | Jan 2021 |
| 1274 | Blackmun Family Partners, L.P. | Dallas, TX 75206 | Oil & Gas Operator | Jun 2024 |
| 1275 | Blackridge Resource Partners LLC | Lexington, KY 40507 | Oil & Gas Operator | Dec 2022 |
| 1276 | Blackrock Drilling, LLC | Abilene, TX 79606 | Oil Operator | Jun 2024 |
| 1277 | Blackrock Energy Corp | | Oil Operator | Mar 2024 |
| 1278 | Blackrock Energy LLC | Roosevelt, TX 76874 | Oil Operator | Feb 2024 |
| 1279 | Blackrock Enterprises, LLC | Salem, WV 26426 | Oil & Gas Operator | Dec 2021 |
| 1280 | Blackshear, Charley | Winters, TX 79567 | Oil & Gas Operator | Oct 1998 |
| 1281 | Blackstock Petroleum Co | Tulsa, OK 74136-4940 | Oil & Gas Operator | Oct 1994 |
| 1282 | Blackstone Drill | | Oil & Gas Operator | Jan 1989 |
| 1283 | Blackstone Drilling, Inc. | McPherson, KS 67460 | Gas Operator | Nov 2011 |
| 1284 | Blackstone Energy Services LLC | Christoval, TX 76935 | Oil & Gas Operator | Jun 2024 |
| 1285 | Blackstone Operating | Red Lodge, MT 59068 | Gas Operator | Dec 2006 |
| 1286 | Blackwater Oil & Gas Corporation | Colleyville, TX 76034 | Oil & Gas Operator | May 2018 |
| 1287 | Blackwelder Oil | MC Camey, TX 79752 | Oil Operator | Jun 2024 |
| 1288 | Blackwell BMC, LLC | Dallas, TX 75204 | Oil & Gas Operator | Jan 2022 |
| 1289 | Blackwell BMC, LP | Dallas, TX 75252 | Oil & Gas Operator | Mar 2007 |
| 1290 | Blackwell Drilling Co. | Cameron, TX 76520 | Oil & Gas Operator | Nov 2004 |
| 1291 | Blackwell Exp & Development, LLC | Dallas, TX 75252 | Oil & Gas Operator | Nov 2023 |
| 1292 | Blackwell Exploration & Development LLC | | Oil & Gas Operator | Jan 2024 |
| 1293 | Blackwell Operating Company | Houston, TX 77227 | Oil & Gas Operator | Jun 2007 |
| 1294 | Blackwell Operating LLC | Andrews, TX 79714 | Oil & Gas Operator | Apr 2024 |
| 1295 | Blackwood & Nichols LTD PTR | Oklahoma City, OK 73102 | Oil & Gas Operator | Aug 1996 |
| 1296 | Blade Oil Co. | Borger, TX 79007 | Oil & Gas Operator | Jun 1994 |
| 1297 | Blaik Oil Company | Oklahoma City, OK 73118 | Oil & Gas Operator | Feb 2009 |
| 1298 | Blair Bill Inc | New Springfield, OH 44443 | Oil & Gas Operator | Dec 1994 |
| 1299 | Blair Exploration, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2011 |
| 1300 | Blair H H Oil Co | | Oil Operator | Feb 1988 |