| 1501 | Roco Petroleum, Incorporated | Abilene, TX 79605 | Oil & Gas Operator | Oct 2025 |
| 1502 | Rocoso Resources, LLC | Albany, TX 76430 | Oil & Gas Operator | Oct 2025 |
| 1503 | Rod Johnson Operations | Miramar Beach, FL 32550 | Oil & Gas Operator | Dec 2015 |
| 1504 | Rod Oil & Gas LTD. | Houston, TX 77261 | Oil & Gas Operator | Jun 1995 |
| 1505 | Rod, Inc. | Coleman, TX 76834 | Oil & Gas Operator | Mar 2008 |
| 1506 | Rodan, Inc. | Wink, TX 79789 | Oil & Gas Operator | Oct 2025 |
| 1507 | Roddy Production Company Inc | Farmington, NM 87401 | Oil & Gas Operator | Jul 2025 |
| 1508 | Rodel Oil & Gas Company | Houston, TX 77218 | Oil & Gas Operator | Oct 2025 |
| 1509 | Roden Oil Company | Midland, TX 79702 | Oil & Gas Operator | Feb 2008 |
| 1510 | Rodenberg, Laura Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Oct 2025 |
| 1511 | Rodeo Resources | | Oil Operator | Jul 1986 |
| 1512 | Rodeo Resources, L.L.C. | Houston, TX 77079 | Oil & Gas Operator | Dec 2024 |
| 1513 | Rodessa Management, Inc. | Longview, TX 75606 | Oil & Gas Operator | May 1995 |
| 1514 | Rodessa Operating Company | Corpus Chrsti, TX 78426 | Oil & Gas Operator | Oct 2025 |
| 1515 | Rodgers Donald E Jr | Ripley, OK 74062 | Oil & Gas Operator | Mar 2011 |
| 1516 | Rodgers, Clyde B. | Cherry Creek, NY 14723 | Gas Operator | Dec 2024 |
| 1517 | Rodgers, Murray | Sedan, KS 67361 | Oil Operator | Oct 1996 |
| 1518 | Rodgers, William L. | Fort Worth, TX 76147 | Oil & Gas Operator | Jan 1995 |
| 1519 | Rodline Petroleum LLC | Adolphus, KY 42120 | Oil Operator | Dec 2023 |
| 1520 | Rodman George Inc | Oklahoma City, OK 73101 | Oil & Gas Operator | Feb 1992 |
| 1521 | Rodman Petroleum Corp. | Odessa, TX 79768 | Oil & Gas Operator | Jul 2023 |
| 1522 | Rodney B Webb Dba Webb Oil Co | Artesia, NM 88210 | Oil & Gas Operator | Jun 2005 |
| 1523 | Rodriguez, Everado | Paola, KS 66071 | Oil Operator | Mar 2021 |
| 1524 | Roe Oil Company | Cushing, OK 74023-0086 | Oil & Gas Operator | Feb 2025 |
| 1525 | Roemer Oil Company | Denver, CO 80202 | Oil & Gas Operator | Nov 1998 |
| 1526 | Roemer, David E. | Somerset, TX 78069 | Oil Operator | Oct 2025 |
| 1527 | Roff Operating Company LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 1528 | Rog Enterprises, Inc. | Lake Dallas, TX 75065 | Oil Operator | May 2014 |
| 1529 | Rog Enterprises, LLC | Burkburnett, TX 76354 | Oil Operator | Oct 2025 |
| 1530 | Roger K Dunham | Sheffield, PA 16347-0145 | Oil Operator | Dec 2016 |
| 1531 | Roger Slayton Dba Escudilla Oil Company | Roswell, NM 88202 | Oil Operator | Sep 2020 |
| 1532 | Roger Wilson | | Oil Operator | Apr 2002 |
| 1533 | Roger Wilson, Inc. | | Oil Operator | Jul 2019 |
| 1534 | Roger'S Properties LLC | Harrisville, WV 26362 | Oil & Gas Operator | Dec 2021 |
| 1535 | Rogers & Son | | Oil & Gas Operator | Dec 2008 |
| 1536 | Rogers County Coal Seam LLC | Ridgeland, MS 39157-8635 | Oil & Gas Operator | Mar 2015 |
| 1537 | Rogers Dan R | Okemah, OK 74847 | Oil & Gas Operator | Apr 2020 |
| 1538 | Rogers Drilling Co. | Olney, TX 76374 | Oil & Gas Operator | Oct 2025 |
| 1539 | Rogers Jerry L | Cushing, OK 74023-0911 | Oil & Gas Operator | Mar 2017 |
| 1540 | Rogers Merlin D | | Oil Operator | Feb 2001 |
| 1541 | Rogers Oil Co. | Bronson, KS 66716 | Oil & Gas Operator | Sep 1995 |
| 1542 | Rogers Oil Compa | | Oil Operator | Apr 1993 |
| 1543 | Rogers Oilfield Op, Corp. | Granbury, TX 76048 | Oil & Gas Operator | Jul 2019 |
| 1544 | Rogers Well Service Inc | Ponca City, OK 74601 | Oil & Gas Operator | Apr 2014 |
| 1545 | Rogers, Clyde | Zellwood, FL 32798 | Oil Operator | Dec 2023 |
| 1546 | Rogers, Cora L | | Oil Operator | Jun 2025 |
| 1547 | Rogers, John Charles | Hot Springs VIllage, AR 71909 | Oil Operator | Jan 2025 |
| 1548 | Rogers, M & Scull, David | | Oil & Gas Operator | Dec 2008 |
| 1549 | Rogers, M. L. | Midland, TX 79701 | Oil & Gas Operator | Sep 2014 |
| 1550 | Rogers, Mike Drilling Co., Inc. | Magnolia, AR 71754 | Oil & Gas Operator | Sep 2002 |
| 1551 | Rogers, S. K. Oil, Inc. | Lubbock, TX 79424 | Oil & Gas Operator | Oct 2025 |
| 1552 | Rohmer Brother'S | Muenster, TX 76252 | Oil & Gas Operator | May 2014 |
| 1553 | Rohmer Resources LP | Muenster, TX 76252 | Oil Operator | Oct 2025 |
| 1554 | Rohmer, A. J. | Muenster, TX 76252 | Oil & Gas Operator | Apr 1997 |
| 1555 | Rohmer, Tony S. | Muenster, TX 76252 | Oil & Gas Operator | Sep 2015 |
| 1556 | Rohmer, William J. | Muenster, TX 76252 | Oil & Gas Operator | Dec 2011 |
| 1557 | Rohrig Petroleum Co. | | Oil & Gas Operator | Dec 1998 |
| 1558 | Roil Mineral & Land Co. | Dallas, TX 75379 | Oil & Gas Operator | Oct 2025 |
| 1559 | Roil Production Company | Houston, TX 77056 | Gas Operator | Sep 2005 |
| 1560 | Rojo Burro Petroleo & Gas | Kilgore, TX 75662 | Oil & Gas Operator | Aug 2007 |
| 1561 | Rojo Grande LLC | Artesia, NM 882110248 | Oil Operator | Apr 2008 |
| 1562 | Rojo Oil Company | McLean, TX 79057 | Oil & Gas Operator | Oct 2025 |
| 1563 | Roka Management Inc | Oklahoma City, OK 73139 | Oil & Gas Operator | Jun 2025 |
| 1564 | Roka Resources Inc | Oklahoma City, OK 73139 | Oil & Gas Operator | Mar 2025 |
| 1565 | Roland Carlson LLC | Austin, TX 78705 | Gas Operator | Oct 2025 |
| 1566 | Roland Oil And Gas | Cut Bank, MT 59427 | Oil Operator | Feb 2023 |
| 1567 | Roland Oil Company | Charlotte, TX 78011 | Oil & Gas Operator | Oct 2025 |
| 1568 | Rolfe & Rolfe Oi | | Oil Operator | May 1988 |
| 1569 | Rollar Oil Co., Inc. | | Oil & Gas Operator | Jul 1999 |
| 1570 | Rollert Co., Inc., The | Luling, TX 78648 | Oil & Gas Operator | Nov 2000 |
| 1571 | Rolling Meadows Oil & Gas Development, LLC | Centerville, KS 66014 | Oil Operator | Jun 2025 |
| 1572 | Rollo Resources, LLC | Granbury, TX 76049 | Gas Operator | Oct 2025 |
| 1573 | Roma Oil & Gas | San Antonio, TX 78217 | Oil & Gas Operator | Mar 1999 |
| 1574 | Roma Oil And Gas, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Oct 2025 |
| 1575 | Romac Oil Company, Inc. | Throckmorton, TX 76483 | Oil & Gas Operator | Oct 2025 |
| 1576 | Romack Production Company | Granville, OH 43023 | Oil Operator | Mar 2018 |
| 1577 | Roman Well Services Inc | Lakeville, OH 44638 | Oil & Gas Operator | Dec 2023 |
| 1578 | Romara Energy Inc. | | Oil & Gas Operator | Dec 2017 |
| 1579 | Romax Corporation | Ardmore, OK 73401-8882 | Oil & Gas Operator | Feb 2022 |
| 1580 | Romaxsco Exploration Co., Inc. | | Oil & Gas Operator | Aug 1993 |
| 1581 | Romco | Muenster, TX 76252 | Oil & Gas Operator | Mar 2015 |
| 1582 | Rome Oil, LLC | Lakewood, CO 80232 | Oil Operator | Jun 2025 |
| 1583 | Romine Oil & Gas LTD | Shawnee, OK 74802-3425 | Oil & Gas Operator | Jan 2013 |
| 1584 | Romine Oil & Gas, LLC | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |
| 1585 | Romines & Warner | Pampa, TX 79065 | Oil & Gas Operator | Jan 2002 |
| 1586 | Romines Operating Group | Pampa, TX 79066 | Oil & Gas Operator | Nov 2022 |
| 1587 | Rominger, R.L. | Wichita Falls, TX 76307 | Oil & Gas Operator | Jan 2015 |
| 1588 | Roms Co., Inc. | | Oil Operator | Jun 1983 |
| 1589 | Ron & Dan'S Oil LTD | Barnsdall, OK 74002-0628 | Oil & Gas Operator | May 2011 |
| 1590 | Ron Brooks Corp | | Oil Operator | Sep 1995 |
| 1591 | Ron Knott & Associates,Inc. | | Oil & Gas Operator | Aug 1989 |
| 1592 | Ron'S Oil Oper I | | Oil Operator | Nov 1994 |
| 1593 | Ron'S Oil Operations Inc | Penokee, KS 67659 | Oil Operator | Dec 2018 |
| 1594 | Ron-Bob Oil LLC | Neosho Falls, KS 66758 | Oil Operator | Jun 2025 |
| 1595 | Ronadero Company Inc | Roswell, NM BAD ADDR | Oil & Gas Operator | Dec 1996 |
| 1596 | Ronald A Gibson & Assoc Inc | Avon Lake, OH 44012 | Oil & Gas Operator | Dec 2024 |
| 1597 | Ronald E. Hall | | Oil Operator | Nov 1991 |
| 1598 | Ronald J Nelson | Hobbs, NM 88240 | Oil & Gas Operator | Feb 2006 |
| 1599 | Ronald L Hicks | Aztec, NM 87410 | Oil Operator | Sep 2009 |
| 1600 | Ronald L Nick | Lucinda, PA 16235-3006 | Gas Operator | Dec 2023 |