| 1201 | Black Gold Resources LLC | Houston, TX 77056 | Oil Operator | Sep 2013 |
| 1202 | Black Gold Well Service | San Angelo, TX 76901 | Oil & Gas Operator | Oct 2025 |
| 1203 | Black Horse Resources, LLC | Oklahoma City, OK 73112 | Oil & Gas Operator | Sep 2024 |
| 1204 | Black Jack Oil Co Inc | Holliday, TX 76366 | Oil & Gas Operator | Jun 2025 |
| 1205 | Black Jack Services, L.L.C. | Bastrop, TX 78602 | Oil & Gas Operator | Oct 2025 |
| 1206 | Black Jack Well Service, Inc. | Somerset, TX 78069 | Oil & Gas Operator | Aug 2003 |
| 1207 | Black Mountain Oil & Gas II LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2021 |
| 1208 | Black Mountain Operating LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2025 |
| 1209 | Black Mountain STX I LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2025 |
| 1210 | Black Mountain SWD LP | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2025 |
| 1211 | Black Oil Company, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Jun 2010 |
| 1212 | Black Pearl Exploration, L.L.C. | Houston, TX 77095 | Oil & Gas Operator | May 2015 |
| 1213 | Black Pearl Operating Comp., LLC | Houston, TX 77057 | Oil Operator | Oct 2025 |
| 1214 | Black Pool Energy, LP | Houston, TX 77070 | Oil & Gas Operator | Jul 2024 |
| 1215 | Black Resources | Borger, TX 79008 | Oil & Gas Operator | Oct 2025 |
| 1216 | Black Resources, Inc. | Granbury, TX 76049 | Oil & Gas Operator | Mar 2008 |
| 1217 | Black River Operating LLC | Keller, TX 76248 | Oil & Gas Operator | Oct 2025 |
| 1218 | Black Rock Resources, LLC | Russell, KS 67665 | Oil Operator | Jun 2025 |
| 1219 | Black Sable Energy, LLC | San Antonio, TX 78209 | Oil Operator | Jan 2018 |
| 1220 | Black Sheep Oil & Gas LLC | Odessa, TX 79768 | Oil & Gas Operator | Oct 2025 |
| 1221 | Black Sheep Operating, LLC | Amarillo, TX 79109 | Oil & Gas Operator | Oct 2025 |
| 1222 | Black Star Oil Company | Plano, TX 75094 | Oil & Gas Operator | Oct 2025 |
| 1223 | Black Stone Energy Company | Houston, TX 77002 | Oil & Gas Operator | Mar 2004 |
| 1224 | Black Stone Energy Company, LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 1225 | Black Stone Oil Company | Dallas, TX 75244 | Oil & Gas Operator | Feb 1997 |
| 1226 | Black Strata LLC | Weatherford, TX 76086 | Oil Operator | Oct 2025 |
| 1227 | Black Swan Opco, LLC | Edmond, OK 73013 | Oil & Gas Operator | Oct 2025 |
| 1228 | Black Swan Operating, LLC | Denver, CO 80202 | Oil & Gas Operator | May 2023 |
| 1229 | Black Top Operating, LLC | Midland, TX 79706 | Oil & Gas Operator | Oct 2025 |
| 1230 | Black Water Environmental L.L.C. | Texas City, TX 77590 | Oil Operator | Oct 2025 |
| 1231 | Black'S Oil & Gas | Borger, TX 79008 | Oil & Gas Operator | Oct 2025 |
| 1232 | Black, Karl T. | Paradise, TX 76073 | Oil & Gas Operator | Aug 2003 |
| 1233 | Blackbeard Operating, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Oct 2025 |
| 1234 | Blackbird R 22 Og L.L.C. | Eastland, TX 76448 | Gas Operator | Oct 2025 |
| 1235 | Blackbrush O & G, Inc. | San Antonio, TX 78258 | Oil & Gas Operator | Apr 2012 |
| 1236 | Blackbrush O & G, LLC | San Antonio, TX 78259 | Oil & Gas Operator | Oct 2025 |
| 1237 | Blackflat Oil Company LLC | Lubbock, TX 79424 | Oil Operator | Oct 2025 |
| 1238 | Blackjack Oil & Gas, Inc. | Hennessey, OK 73742 | Oil & Gas Operator | Oct 2025 |
| 1239 | Blackjack Operating L. L. C. | Cibolo, TX 78108 | Oil & Gas Operator | Oct 2025 |
| 1240 | Blackland Oil & Gas | Portland, TX 78374 | Oil & Gas Operator | Aug 1997 |
| 1241 | Blackmar, Jim Oil Operator | Luling, TX 78648 | Oil & Gas Operator | Jan 2021 |
| 1242 | Blackmun Family Partners, L.P. | Dallas, TX 75206 | Oil & Gas Operator | Oct 2025 |
| 1243 | Blackrock Drilling, LLC | Abilene, TX 79606 | Oil Operator | Oct 2025 |
| 1244 | Blackrock Energy LLC | Wagoner, OK 74467 | Oil Operator | Apr 2025 |
| 1245 | Blackrock Operating, LLC | Tuscola, TX 79562 | Oil & Gas Operator | Oct 2025 |
| 1246 | Blackshear, Charley | Winters, TX 79567 | Oil & Gas Operator | Oct 1998 |
| 1247 | Blackstone Energy Services LLC | Christoval, TX 76935 | Oil & Gas Operator | Oct 2025 |
| 1248 | Blackwater Oil & Gas Corporation | Colleyville, TX 76034 | Oil & Gas Operator | May 2018 |
| 1249 | Blackwelder Oil | MC Camey, TX 79752 | Oil Operator | Oct 2025 |
| 1250 | Blackwell BMC, LLC | Dallas, TX 75204 | Oil & Gas Operator | Jan 2022 |
| 1251 | Blackwell BMC, LP | Dallas, TX 75252 | Oil & Gas Operator | Mar 2007 |
| 1252 | Blackwell Drilling Co. | Cameron, TX 76520 | Oil & Gas Operator | Nov 2004 |
| 1253 | Blackwell Exp & Development, LLC | Dallas, TX 75252 | Oil & Gas Operator | Nov 2023 |
| 1254 | Blackwell Operating Company | Houston, TX 77227 | Oil & Gas Operator | Jun 2007 |
| 1255 | Blade Oil Co. | Borger, TX 79007 | Oil & Gas Operator | Jun 1994 |
| 1256 | Blair Exploration, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2011 |
| 1257 | Blair Oil Company | Kingfisher, OK 73750-1213 | Oil & Gas Operator | Jun 2025 |
| 1258 | Blair, Jack N. | Midland, TX 79702 | Oil & Gas Operator | May 1996 |
| 1259 | Blair, R. W. | FT Stockton, TX 79735 | Oil & Gas Operator | Dec 2009 |
| 1260 | Blake Oil & Gas Corporation | Midland, TX 79701 | Oil & Gas Operator | May 2004 |
| 1261 | Blake Production Company, Inc. | Oklahoma City, OK 73118 | Oil & Gas Operator | Oct 2025 |
| 1262 | Blakemore, Inc. | Richardson, TX 75080 | Oil & Gas Operator | Dec 2012 |
| 1263 | Blakenergy Operating, LLC | Spring, TX 77386 | Oil & Gas Operator | Oct 2025 |
| 1264 | Blalack, James William | Schertz, TX 78154 | Oil & Gas Operator | Oct 2025 |
| 1265 | Blanco Engineering Inc. | Artesia, NM 88210 | Oil & Gas Operator | Feb 1997 |
| 1266 | Blanco Oil Co. | San Antonio, TX 78230 | Oil & Gas Operator | Feb 2004 |
| 1267 | Blazer Energy Corp. | Alexandria, VA 22314 | Oil & Gas Operator | Dec 2014 |
| 1268 | Blazer Resources, Inc. | Leesburg, TX 75451 | Oil & Gas Operator | Oct 2025 |
| 1269 | Bledsco, Inc. | Holliday, TX 76366 | Oil Operator | Feb 2010 |
| 1270 | Bledsoe Partners, Inc. | Oklahoma City, OK 73120 | Oil & Gas Operator | Mar 1995 |
| 1271 | Bledsoe Petro Corporation | Dallas, TX 75201 | Oil & Gas Operator | Dec 2000 |
| 1272 | Bledsoe, R.K. Trust Oil Operator | Jourdanton, TX 78026 | Oil & Gas Operator | Oct 2025 |
| 1273 | Blessing Energy, Inc. | Giddings, TX 78942 | Oil & Gas Operator | Oct 2025 |
| 1274 | Blevins Production LLC | Jacksboro, TX 76458 | Oil Operator | Oct 2025 |
| 1275 | BLM Black Gold Properties, LTD. | Lubbock, TX 79423 | Oil & Gas Operator | Oct 2025 |
| 1276 | Block "T" Petroleum, Inc. | Tyler, TX 75707 | Oil & Gas Operator | Oct 2025 |
| 1277 | Block T Operating, LLC | Dallas, TX 75201 | Oil & Gas Operator | Jul 2025 |
| 1278 | Bloomer & Associates, Inc. | Lago VIsta, TX 78645 | Oil & Gas Operator | Jul 2002 |
| 1279 | Bloxom, John Tom | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 2007 |
| 1280 | BLS Production Co., Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2025 |
| 1281 | BLS Resources, Inc. | Rosharon, TX 77583 | Oil & Gas Operator | Feb 2001 |
| 1282 | Bluco Production Co., Inc. | Austin, TX 78716 | Oil & Gas Operator | Oct 2025 |
| 1283 | Blue Arrow Operating, LLC | Midland, TX 79705 | Oil & Gas Operator | Oct 2025 |
| 1284 | Blue Creek Inc | Fort Worth, TX 76181 | Oil & Gas Operator | Dec 2002 |
| 1285 | Blue Diamond Mountain, LLC | Marble Falls, TX 78654 | Oil Operator | Oct 2025 |
| 1286 | Blue Dolphin Production LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Jul 2025 |
| 1287 | Blue Dome Operating, LLC | Tulsa, OK 74119 | Gas Operator | Oct 2025 |
| 1288 | Blue Duck Corporation | Mont Belvieu, TX 77580 | Oil & Gas Operator | Sep 2011 |
| 1289 | Blue Grass Energy, Inc. | Houston, TX 77057 | Oil & Gas Operator | Jul 2025 |
| 1290 | Blue Marble Resources Op, LLC | Houston, TX 77027 | Oil & Gas Operator | Feb 2019 |
| 1291 | Blue Oil, Inc. | Burnet, TX 78611 | Oil & Gas Operator | Oct 2025 |
| 1292 | Blue Owl Energy LLC | Canada, 00100 | Oil Operator | Oct 2025 |
| 1293 | Blue Quail Oil Co. | Midland, TX 79706 | Oil & Gas Operator | Oct 2025 |
| 1294 | Blue Ridge Group, Inc. | Bowling Green, KY 42101 | Oil & Gas Operator | Dec 2023 |
| 1295 | Blue Ridge Oil & Gas Exp., Inc. | Belleville, MI 48111 | Gas Operator | Jul 1994 |
| 1296 | Blue Ridge Operating Company,Inc | Ashland, OR 97520 | Oil & Gas Operator | Oct 1998 |
| 1297 | Blue Ridge Operating LLC | Willis, TX 77378 | Oil Operator | Oct 2025 |
| 1298 | Blue Ridge Resources, LLC | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |
| 1299 | Blue River Inc. | Abilene, TX 79608 | Oil Operator | Oct 2025 |
| 1300 | Blue Star Energy, Inc. | Shawnee, OK 74802 | Oil & Gas Operator | Oct 2025 |