| 1401 | BLS Resources, Inc. | Rosharon, TX 77583 | Oil & Gas Operator | Feb 2001 |
| 1402 | Blu Oil Inc | Fairlawn, OH 44334 | Oil & Gas Operator | Dec 2024 |
| 1403 | Blubaugh Charles | | Oil Operator | Feb 1995 |
| 1404 | Blubaugh David | Danville, OH 43014 | Oil & Gas Operator | Dec 2007 |
| 1405 | Blubaugh Marvin C | Tonkawa, OK 74653-4739 | Oil & Gas Operator | Nov 2014 |
| 1406 | Blubaugh Ronald D | Tonkawa, OK 74653-0066 | Oil & Gas Operator | Sep 2014 |
| 1407 | Bluco Production Co., Inc. | Austin, TX 78716 | Oil & Gas Operator | Aug 2026 |
| 1408 | Blue Arrow Operating, LLC | Midland, TX 79705 | Oil & Gas Operator | Aug 2026 |
| 1409 | Blue Bay Oil & Gas, L L C | | Gas Operator | Jan 2018 |
| 1410 | Blue Bear Energy LLC | Coalgate, OK 74538-3898 | Gas Operator | May 2026 |
| 1411 | Blue Bison Operating LLC | Chickasha, OK 73018 | Oil & Gas Operator | Apr 2026 |
| 1412 | Blue Cedar Energy LLC | Edmond, OK 73013 | Oil & Gas Operator | May 2026 |
| 1413 | Blue Chip Oil Inc | | Oil & Gas Operator | Jun 2026 |
| 1414 | Blue Creek Gas Co. | | Oil & Gas Operator | Jun 2014 |
| 1415 | Blue Creek Inc | Fort Worth, TX 76181 | Oil & Gas Operator | Jul 2002 |
| 1416 | Blue Creek Resources, Inc. | | Oil & Gas Operator | May 1990 |
| 1417 | Blue Devil Exploration LLC | Tulsa, OK 74103-4217 | Oil & Gas Operator | Jan 2024 |
| 1418 | Blue Diamond Drilling, Inc. | | Oil Operator | Nov 1995 |
| 1419 | Blue Diamond Holdings, LLC | Wellsville, KS 66092 | Oil Operator | Dec 2009 |
| 1420 | Blue Diamond Mountain, LLC | Marble Falls, TX 78654 | Oil Operator | Aug 2026 |
| 1421 | Blue Dolphin Production LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | May 2026 |
| 1422 | Blue Dome Operating, LLC | Tulsa, OK 74119 | Gas Operator | Aug 2026 |
| 1423 | Blue Duck Corporation | Mont Belvieu, TX 77580 | Oil & Gas Operator | Sep 2011 |
| 1424 | Blue Energy LLC | Scottsdale, AZ 85250 | Oil & Gas Operator | Dec 2024 |
| 1425 | Blue Flame Energy Corp | Pikeville, KY 41501 | Oil & Gas Operator | Dec 2024 |
| 1426 | Blue Goose Drill | | Oil Operator | Aug 1991 |
| 1427 | Blue Goose Drilling Company, Inc. | Great Bend, KS 67530 | Oil Operator | Apr 2026 |
| 1428 | Blue Grass Energy, Inc. | Houston, TX 77057 | Oil & Gas Operator | May 2026 |
| 1429 | Blue Group Operating, Inc. | Spencer, WV 25276 | Oil & Gas Operator | Nov 2021 |
| 1430 | Blue Jay Operating, LLC | Fort Worth, TX 76107 | Gas Operator | Dec 2009 |
| 1431 | Blue Jay Petroleum, LLC | Whitesville, KY 42378 | Oil Operator | Dec 2024 |
| 1432 | Blue Lake Gas Storage Co | | Oil & Gas Operator | Oct 2016 |
| 1433 | Blue Marble Resources Op, LLC | Houston, TX 77027 | Oil & Gas Operator | Feb 2019 |
| 1434 | Blue Mill Farms, Inc. | | Oil & Gas Operator | Apr 1992 |
| 1435 | Blue Mountain Company, Inc. | Wichita, KS 67212 | Oil Operator | Feb 1999 |
| 1436 | Blue Oil, Inc. | Burnet, TX 78611 | Oil & Gas Operator | Aug 2026 |
| 1437 | Blue Owl Energy LLC | Canada, 00100 | Oil Operator | Aug 2026 |
| 1438 | Blue Quail Oil & Gas Inc | Yukon, OK 73099 | Oil & Gas Operator | Dec 2004 |
| 1439 | Blue Quail Oil Co. | Midland, TX 79706 | Oil & Gas Operator | Aug 2026 |
| 1440 | Blue Ridge Group, Inc. | Bowling Green, KY 42101 | Oil & Gas Operator | Dec 2023 |
| 1441 | Blue Ridge Oil & Gas Exp., Inc. | Belleville, MI 48111 | Gas Operator | Jul 1994 |
| 1442 | Blue Ridge Operating Company,Inc | Ashland, OR 97520 | Oil & Gas Operator | Oct 1998 |
| 1443 | Blue Ridge Operating LLC | Willis, TX 77378 | Oil Operator | Aug 2026 |
| 1444 | Blue Ridge Resources, LLC | Midland, TX 79710 | Oil & Gas Operator | Aug 2026 |
| 1445 | Blue River Inc. | Abilene, TX 79608 | Oil Operator | Aug 2026 |
| 1446 | Blue Ruby Operating, LLC | Midland, TX 79706 | Oil & Gas Operator | Nov 2020 |
| 1447 | Blue Sky Investments LLC | Harper, KS 67058 | Oil Operator | Dec 2009 |
| 1448 | Blue Sky NM, Inc. | Houston, TX 77024 | Oil Operator | Oct 2017 |
| 1449 | Blue Spruce Operating LLC | Pinedale, WY 82941 | Oil & Gas Operator | Jun 2026 |
| 1450 | Blue Star Energy, Inc. | Shawnee, OK 74802 | Oil & Gas Operator | Aug 2026 |
| 1451 | Blue Star Natural Resources, LLC | San Angelo, TX 76906 | Oil & Gas Operator | Aug 2026 |
| 1452 | Blue Star Operating Company | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2026 |
| 1453 | Blue Steel Investments, LLC | Edmond, OK 73013 | Oil Operator | Dec 2019 |
| 1454 | Blue Tip Castlegate, Inc | Erie, KS 66733 | Gas Operator | Jun 2016 |
| 1455 | Blue Tip Energy Wyoming Inc | Houston, TX 77284 | Oil Operator | Jun 2016 |
| 1456 | Blue Top Crude Oil Co., Inc. | Farlington, KS 66734 | Oil Operator | Mar 2026 |
| 1457 | Blue Top Energy LLC | Westport, CT 06880 | Oil Operator | Dec 2019 |
| 1458 | Blue Valley Petroleum, LTD. | | Oil Operator | Jun 1991 |
| 1459 | Blue Water Resources LLC | Tulsa, OK 74136 | Oil & Gas Operator | May 2026 |
| 1460 | Blue Water Solutions LLC | Oklahoma City, OK 73134-1002 | Oil & Gas Operator | May 2026 |
| 1461 | Blue Wing Energy, Inc. | Portland, TX 78374 | Oil & Gas Operator | Aug 2026 |
| 1462 | Bluebird Energy, LLC | Billings, MT 59102 | Oil Operator | May 2026 |
| 1463 | Bluebird Production, Inc. | Great Bend, KS 67530 | Oil Operator | Nov 2011 |
| 1464 | Bluebonnet Energy Corporation | Englewood, CO 80112 | Oil & Gas Operator | Sep 2015 |
| 1465 | Bluebonnet Exploration Company | New Braunfels, TX 78130 | Oil & Gas Operator | Apr 2018 |
| 1466 | Bluebonnet Land & Cattle Co. | Graham, TX 76450 | Oil & Gas Operator | Aug 2026 |
| 1467 | Bluebonnet Oil & Gas | Three Rivers, TX 78071 | Oil & Gas Operator | Aug 2026 |
| 1468 | Bluebonnet Oil Corporation | Oklahoma City, OK 73162-6249 | Oil & Gas Operator | Apr 2026 |
| 1469 | Bluebonnet Oil LLC | Oklahoma City, OK 73162-6249 | Oil & Gas Operator | May 2026 |
| 1470 | Bluecrest Alaska Operating LLC | | Oil & Gas Operator | Mar 2026 |
| 1471 | Bluefin Resources LLC | Houston, TX 77079 | Oil & Gas Operator | Oct 2023 |
| 1472 | Bluegrass Exploration LLC | | Oil Operator | Dec 2023 |
| 1473 | Bluehawk Properties Inc | Riverside, CA 92517-1045 | Oil & Gas Operator | Dec 2016 |
| 1474 | Bluejacket Operating, LLC | | Oil Operator | Apr 2026 |
| 1475 | Bluejay Energy Corporation | Waxahachie, TX 75168 | Oil Operator | Feb 2008 |
| 1476 | Bluemark Energy, LLC | Tulsa, OK 74135 | Oil & Gas Operator | Apr 2026 |
| 1477 | Blueridge Petroleum Corporation | Edmond, OK 73003 | Oil & Gas Operator | Apr 2026 |
| 1478 | Bluestem Energy Holdings, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Jun 2015 |
| 1479 | Bluestem Natural Gas LLC | Bixby, OK 74008 | Oil & Gas Operator | Aug 2026 |
| 1480 | Bluestem Resources LLC | Kerrville, TX 78028 | Oil & Gas Operator | Aug 2026 |
| 1481 | Bluestem, Inc | Cedar Vale, KS 67024 | Oil Operator | Dec 2014 |
| 1482 | Bluestone Natural Res. II, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Dec 2019 |
| 1483 | Bluestone Natural Resources II LLC | | Oil & Gas Operator | Mar 2017 |
| 1484 | Bluestone Natural Resources, LLC | Tulsa, OK 74114 | Oil & Gas Operator | Jan 2015 |
| 1485 | Bluestone Production Company LP | Tulsa, OK 74105 | Oil & Gas Operator | Jun 2007 |
| 1486 | Bluetop Oil Comp | | Oil Operator | Nov 1995 |
| 1487 | Bluewater Gas Storage LLC | | Oil Operator | Jun 2026 |
| 1488 | Bluff City Pipe & Supply Co. | | Oil Operator | Jan 1987 |
| 1489 | Bluff Creek Petroleum, LLC | Abilene, TX 79603 | Oil & Gas Operator | Aug 2026 |
| 1490 | Bluff Creek Ridge, Inc. | Anthony, KS 67003 | Oil & Gas Operator | Apr 2026 |
| 1491 | Bluff LTD (The) Partnership | Woodward, OK 73801-3160 | Oil Operator | Dec 1999 |
| 1492 | Bluff Oil Corporation | Newkirk, OK 74647 | Oil & Gas Operator | Jan 2013 |
| 1493 | BLX Inc | Edmond, OK 73013 | Oil & Gas Operator | May 2026 |
| 1494 | BM Oil Company, LLC | Olney, TX 76374 | Oil Operator | Nov 2021 |
| 1495 | BMB Oil Production | Coleman, TX 76834 | Oil & Gas Operator | Feb 2007 |
| 1496 | BMBD Enterprises, LLC | Iowa Park, TX 76367 | Oil & Gas Operator | Aug 2026 |
| 1497 | BMC Petroleum Inc | Enid, OK 73701-2700 | Oil & Gas Operator | May 2026 |
| 1498 | BMF Oil LLC | Hamilton, KS 66853 | Oil Operator | Dec 2019 |
| 1499 | BMR II LLC | Evergreen, CO 80439 | Oil & Gas Operator | Jan 2023 |
| 1500 | BMR Oil & Gas, Inc. | | Oil & Gas Operator | Dec 2024 |