| 1401 | Rock Oil Company | Broken Arrow, OK 74014-6106 | Oil & Gas Operator | Mar 2026 |
| 1402 | Rock Oil Corporation | Lawrence, KS 66046 | Oil Operator | Oct 2004 |
| 1403 | Rock Oil Resources LLC | Titusville, PA 16354 | Oil Operator | Dec 2025 |
| 1404 | Rock Oil, Inc. | | Oil Operator | Nov 1989 |
| 1405 | Rock Operating | Abilene, TX 79608 | Oil & Gas Operator | Jun 2026 |
| 1406 | Rock Petroleum, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 2025 |
| 1407 | Rock Resources, Inc. | Corpus Chrsti, TX 78414 | Oil & Gas Operator | Jun 2026 |
| 1408 | Rock River Operating Inc | Laramie, WY 82070 | Oil & Gas Operator | Apr 2026 |
| 1409 | Rock Solid Operating, LLC | Southlake, TX 76092 | Oil Operator | Sep 2021 |
| 1410 | Rock Well Petroleum (U.S.), Inc. | Canada, 00100 | Oil & Gas Operator | Sep 2014 |
| 1411 | Rockbridge Oil & Gas | Houston, TX 77027 | Oil & Gas Operator | Mar 1990 |
| 1412 | Rockbridge Oil And Gas, Inc. | Houston, TX 77227 | Oil & Gas Operator | Nov 1997 |
| 1413 | Rockcliff Energy Operating III LLC | Houston, TX 77002 | Oil & Gas Operator | Jun 2026 |
| 1414 | Rockcliff Energy Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Jun 2026 |
| 1415 | Rockcliff Operating La LLC | | Oil & Gas Operator | Jul 2022 |
| 1416 | Rockcliff Operating New Mexico LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2018 |
| 1417 | Rockdale Energy, LLC | Houston, TX 77024 | Oil & Gas Operator | Dec 2020 |
| 1418 | Rockdale Marcellus LLC | Canonsburg, PA 15317 | Gas Operator | Apr 2022 |
| 1419 | Rockdale Resources Corporation | Houston, TX 77024 | Oil Operator | Jul 2016 |
| 1420 | Rockefeller Hughes (USA) LLC | Houston, TX 77027 | Oil & Gas Operator | Jul 2015 |
| 1421 | Rocker A Operating Company | Post, TX 79356 | Oil & Gas Operator | Aug 2022 |
| 1422 | Rocker B Production, L.L.C. | Graham, TX 76450 | Gas Operator | Aug 2025 |
| 1423 | Rocket Energy Corporation | Muskogee, OK 74402-1665 | Oil & Gas Operator | Dec 2003 |
| 1424 | Rocket Oil Company | Duncan, OK 73534 | Oil & Gas Operator | Apr 2015 |
| 1425 | Rockford CBM LLC | Tulsa, OK 74103-4335 | Oil & Gas Operator | Jan 2013 |
| 1426 | Rockford Energy Partners II, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Sep 2007 |
| 1427 | Rockford Energy Partners III,LLC | Tulsa, OK 74103 | Oil & Gas Operator | Sep 2012 |
| 1428 | Rockford Panhandle, LLC | Tulsa, OK 74105 | Oil & Gas Operator | Sep 2008 |
| 1429 | Rockhound Petroleum, LLC | St. John, KS 67576 | Oil & Gas Operator | Feb 2026 |
| 1430 | Rockies Resources Holdings LLC | Lakewood, CO 80228 | Oil & Gas Operator | Mar 2026 |
| 1431 | Rockies Standard Oil Company | Provo, UT 84604 | Oil & Gas Operator | Oct 2020 |
| 1432 | Rockin 'A' Oil | | Oil Operator | Feb 2026 |
| 1433 | Rockin 9 Oil And Gas, LLC | Auburndale, FL 33823 | Gas Operator | Feb 2026 |
| 1434 | Rockin Bar Nothin Ranch, Inc. | Independence, KS 67301 | Oil Operator | Feb 2026 |
| 1435 | Rockin C Production, L.L.C. | Nocona, TX 76255 | Oil Operator | May 2025 |
| 1436 | Rockin D Resources LLC | Bristow, OK 74010-4162 | Oil Operator | Feb 2026 |
| 1437 | Rockin G. Energy, LLC | Weatherford, TX 76087 | Gas Operator | Sep 2020 |
| 1438 | Rockin K Enterprises LLC | Riverside, MO 64168 | Oil Operator | Feb 2026 |
| 1439 | Rockin S Field Service LLC | Stigler, OK 74462 | Gas Operator | Feb 2026 |
| 1440 | Rockin' D, LLC | Big Spring, TX 79720 | Oil & Gas Operator | Mar 2024 |
| 1441 | Rockin' H Resources LLC | Alice, TX 78332 | Oil & Gas Operator | Jun 2026 |
| 1442 | Rocking Chair Energy Partners LLC | Morris, OK 74445 | Oil & Gas Operator | Feb 2026 |
| 1443 | Rocking Lazy Little B Ranch Oil | Cedar Creek, TX 78612 | Oil Operator | Apr 2011 |
| 1444 | Rocking M Investments, Inc | Francis, OK 74820 | Gas Operator | Mar 2026 |
| 1445 | Rocking R Investments, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Jun 2026 |
| 1446 | Rocking, R, Drilling & Prod Co. | Bowie, TX 76230 | Oil & Gas Operator | Jun 2026 |
| 1447 | Rockland Oil Company | Addison, TX 75001 | Oil & Gas Operator | Feb 2026 |
| 1448 | Rockleigh K. Thurman | | Oil & Gas Operator | Jan 2025 |
| 1449 | Rockoil Energy Of Texas, Inc. | Weatherford, TX 76086 | Oil & Gas Operator | Jun 2026 |
| 1450 | Rockport Energy Solutions LLC | Austin, TX 78730 | Oil & Gas Operator | Jun 2026 |
| 1451 | Rockport Georgetown Holdings,LP | Bellaire, TX 77401 | Oil & Gas Operator | Nov 2007 |
| 1452 | Rocksauce Opr LLC | Canonsburg, PA 15317-3906 | Oil & Gas Operator | Dec 2025 |
| 1453 | Rocksprings Energy Company LLC | Houston, TX 77057 | Oil & Gas Operator | Dec 1997 |
| 1454 | Rockstar Production, LLC | Graham, TX 76450 | Oil Operator | Jun 2026 |
| 1455 | Rockstar Resources, LLC | Sourlake, TX 77659 | Oil & Gas Operator | Jun 2026 |
| 1456 | Rockwall Marketing Corporation | Benbrook, TX 76126 | Oil & Gas Operator | Dec 2007 |
| 1457 | Rockwell Drilling Company | New York, NY 10013 | Oil & Gas Operator | Dec 2005 |
| 1458 | Rockwell Energy Corporation | Tulsa, OK 74105 | Oil & Gas Operator | Apr 2014 |
| 1459 | Rockwell Energy, LLC | Spring, TX 77386 | Oil & Gas Operator | Sep 2014 |
| 1460 | Rockwell Resources Inc | New Matamoras, OH 45767 | Oil & Gas Operator | Dec 2024 |
| 1461 | Rockwood Petrole | | Oil Operator | Aug 1985 |
| 1462 | Rockwood Resources Inc | Coleman, TX 76834 | Oil & Gas Operator | Jun 2026 |
| 1463 | Rocky Creek Resources, LLC | Houston, TX 77055 | Oil & Gas Operator | Mar 2025 |
| 1464 | Rocky Mount Gas Gathering,LLC | | Oil Operator | Apr 2001 |
| 1465 | Rocky Mountain Gas Inc | Sheridan, WY 82801 | Gas Operator | Nov 2009 |
| 1466 | Rocky Point Oil, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Jun 2026 |
| 1467 | Rocky Road Oil Company | | Oil Operator | Jan 2026 |
| 1468 | Rocky Roads Operating LLC | Tulsa, OK 74103-4048 | Oil & Gas Operator | Mar 2026 |
| 1469 | Rocky Top Energy LLC | Bartlesville, OK 74003 | Oil & Gas Operator | Sep 2025 |
| 1470 | Roco Petroleum, Incorporated | Abilene, TX 79605 | Oil & Gas Operator | Jun 2026 |
| 1471 | Rocoso Resources, LLC | Albany, TX 76430 | Oil & Gas Operator | Jun 2026 |
| 1472 | Rod Johnson Operations | Miramar Beach, FL 32550 | Oil & Gas Operator | Dec 2015 |
| 1473 | Rod Oil & Gas LTD. | Houston, TX 77261 | Oil & Gas Operator | Jun 1995 |
| 1474 | Rod, Inc. | Coleman, TX 76834 | Oil & Gas Operator | Mar 2008 |
| 1475 | Rodan, Inc. | Wink, TX 79789 | Oil & Gas Operator | Jun 2026 |
| 1476 | Roddy Production Company Inc | Farmington, NM 87401 | Oil & Gas Operator | Mar 2026 |
| 1477 | Rodel Oil & Gas Company | Houston, TX 77218 | Oil & Gas Operator | Jun 2026 |
| 1478 | Roden Oil Company | Midland, TX 79702 | Oil & Gas Operator | Feb 2008 |
| 1479 | Rodenberg, Laura Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Jun 2026 |
| 1480 | Rodeo Resources | | Oil Operator | Jul 1986 |
| 1481 | Rodeo Resources, L.L.C. | Houston, TX 77079 | Oil & Gas Operator | Dec 2024 |
| 1482 | Rodessa Management, Inc. | Longview, TX 75606 | Oil & Gas Operator | May 1995 |
| 1483 | Rodessa Operating Company | Corpus Chrsti, TX 78426 | Oil & Gas Operator | Jun 2026 |
| 1484 | Rodgers Donald E Jr | Ripley, OK 74062 | Oil & Gas Operator | Mar 2011 |
| 1485 | Rodgers, Clyde B. | Cherry Creek, NY 14723 | Gas Operator | Dec 2024 |
| 1486 | Rodgers, Murray | Sedan, KS 67361 | Oil Operator | Oct 1996 |
| 1487 | Rodgers, William L. | Fort Worth, TX 76147 | Oil & Gas Operator | Jan 1995 |
| 1488 | Rodline Petroleum LLC | Adolphus, KY 42120 | Oil Operator | Dec 2023 |
| 1489 | Rodman Petroleum Corp. | Odessa, TX 79768 | Oil & Gas Operator | Jul 2023 |
| 1490 | Rodney B Webb Dba Webb Oil Co | Artesia, NM 88210 | Oil & Gas Operator | Jun 2005 |
| 1491 | Rodriguez, Everado | Paola, KS 66071 | Oil Operator | Mar 2021 |
| 1492 | Roe Oil Company | Cushing, OK 74023-0086 | Oil & Gas Operator | Nov 2025 |
| 1493 | Roemer Oil Company | Denver, CO 80202 | Oil & Gas Operator | Nov 1998 |
| 1494 | Roemer, David E. | Somerset, TX 78069 | Oil Operator | Jun 2026 |
| 1495 | Roff Operating Company LLC | Houston, TX 77002 | Oil & Gas Operator | Jun 2026 |
| 1496 | Rog Enterprises, Inc. | Lake Dallas, TX 75065 | Oil Operator | May 2014 |
| 1497 | Rog Enterprises, LLC | Burkburnett, TX 76354 | Oil Operator | Jun 2026 |
| 1498 | Roger K Dunham | Sheffield, PA 16347-0145 | Oil Operator | Dec 2016 |
| 1499 | Roger Slayton Dba Escudilla Oil Company | Roswell, NM 88202 | Oil Operator | Sep 2020 |
| 1500 | Roger Wilson | | Oil Operator | Apr 2002 |