| 1501 | Rojo Burro Petroleo & Gas | Kilgore, TX 75662 | Oil & Gas Operator | Aug 2007 |
| 1502 | Rojo Grande LLC | Artesia, NM 882110248 | Oil Operator | Apr 2008 |
| 1503 | Rojo Oil Company | McLean, TX 79057 | Oil & Gas Operator | Apr 2024 |
| 1504 | Roka Management Inc | | Oil & Gas Operator | Dec 2023 |
| 1505 | Roka Resources Inc | Oklahoma City, OK 73139 | Oil & Gas Operator | Oct 2018 |
| 1506 | Roland Carlson LLC | Victoria, TX 77901 | Gas Operator | Apr 2024 |
| 1507 | Roland Oil And Gas | Cut Bank, MT 59427 | Oil Operator | Feb 2023 |
| 1508 | Roland Oil Company | Charlotte, TX 78011 | Oil & Gas Operator | Apr 2024 |
| 1509 | Rolfe & Rolfe Oi | | Oil Operator | May 1988 |
| 1510 | Rollar Oil Co., Inc. | | Oil & Gas Operator | Jul 1999 |
| 1511 | Rollert Co., Inc., The | Luling, TX 78648 | Oil & Gas Operator | Nov 2000 |
| 1512 | Rolling Meadows Oil & Gas Development, LLC | Centerville, KS 66014 | Oil Operator | Dec 2023 |
| 1513 | Rollo Resources, LLC | Granbury, TX 76049 | Gas Operator | Apr 2024 |
| 1514 | Roma Oil & Gas | San Antonio, TX 78217 | Oil & Gas Operator | Mar 1999 |
| 1515 | Roma Oil And Gas, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Apr 2024 |
| 1516 | Romac Oil Company, Inc. | Throckmorton, TX 76483 | Oil & Gas Operator | Apr 2024 |
| 1517 | Romack Production Company | Granville, OH 43023 | Oil Operator | Mar 2018 |
| 1518 | Roman Well Services Inc | Lakeville, OH 44638 | Oil & Gas Operator | Dec 2022 |
| 1519 | Romara Energy Inc. | | Oil & Gas Operator | Dec 2017 |
| 1520 | Romax Corporation | Ardmore, OK 73401-8882 | Oil & Gas Operator | Feb 2022 |
| 1521 | Romaxsco Exploration Co., Inc. | | Oil & Gas Operator | Aug 1993 |
| 1522 | Romco | Muenster, TX 76252 | Oil & Gas Operator | Mar 2015 |
| 1523 | Rome Oil, LLC | Lakewood, CO 80232 | Oil Operator | Nov 2023 |
| 1524 | Romine Oil & Gas LTD | Shawnee, OK 74802-3425 | Oil & Gas Operator | Jan 2013 |
| 1525 | Romine Oil & Gas, LLC | Midland, TX 79710 | Oil & Gas Operator | Apr 2024 |
| 1526 | Romines & Warner | Pampa, TX 79065 | Oil & Gas Operator | Jan 2002 |
| 1527 | Romines Operating Group | Pampa, TX 79066 | Oil & Gas Operator | Nov 2022 |
| 1528 | Rominger, R.L. | Wichita Falls, TX 76307 | Oil & Gas Operator | Jan 2015 |
| 1529 | Roms Co., Inc. | | Oil Operator | Jun 1983 |
| 1530 | Ron & Dan'S Oil LTD | Barnsdall, OK 74002-0628 | Oil & Gas Operator | May 2011 |
| 1531 | Ron Brooks Corp | | Oil Operator | Sep 1995 |
| 1532 | Ron Knott & Associates,Inc. | | Oil & Gas Operator | Aug 1989 |
| 1533 | Ron'S Oil Oper I | | Oil Operator | Nov 1994 |
| 1534 | Ron'S Oil Operations Inc | Penokee, KS 67659 | Oil Operator | Dec 2018 |
| 1535 | Ron-Bob Oil LLC | Neosho Falls, KS 66758 | Oil Operator | Dec 2023 |
| 1536 | Ronadero Company Inc | Roswell, NM BAD ADDR | Oil & Gas Operator | Dec 1996 |
| 1537 | Ronald A Gibson & Assoc Inc | Avon Lake, OH 44012 | Oil & Gas Operator | Dec 2023 |
| 1538 | Ronald E. Hall | | Oil Operator | Nov 1991 |
| 1539 | Ronald J Nelson | Hobbs, NM 88240 | Oil & Gas Operator | Feb 2006 |
| 1540 | Ronald L Hicks | Aztec, NM 87410 | Oil Operator | Sep 2009 |
| 1541 | Ronald L Nick | Lucinda, PA 16235-3006 | Gas Operator | Dec 2023 |
| 1542 | Ronald M. Sannes | | Oil & Gas Operator | Oct 2016 |
| 1543 | Ronald Russ Prater, Inc. | Eastborough, KS 67207 | Gas Operator | Dec 2023 |
| 1544 | Ronan Company | Springfield, MO 65704 | Oil & Gas Operator | Aug 2013 |
| 1545 | Ronco Energy Resources Inc | Norman, OK 73072 | Oil & Gas Operator | Apr 2015 |
| 1546 | Ronco Incorporat | | Oil Operator | Sep 1988 |
| 1547 | Ronde Operating, LLC | Houston, TX 77006 | Oil & Gas Operator | Mar 2021 |
| 1548 | Rongey Ira E | Sapulpa, OK 74066-9317 | Oil & Gas Operator | May 2013 |
| 1549 | Rongey Oil | Jenks, OK 74037-3621 | Oil & Gas Operator | Jan 2013 |
| 1550 | Ronmar Engineering & Expl Inc | Ada, OK 74820-1402 | Oil Operator | Aug 2013 |
| 1551 | Ronning Gas And Oil LLC | Mesa, AZ 85203 | Oil & Gas Operator | Apr 2024 |
| 1552 | Ronny N. Davis | | Oil Operator | Jan 2024 |
| 1553 | Roome Exploration Company | Bartlett, TX 76511 | Oil & Gas Operator | Mar 2008 |
| 1554 | Roome Oil Co. | Bartlett, TX 76511 | Oil & Gas Operator | Apr 2024 |
| 1555 | Roon Energy, Inc. | Dickinson, TX 77539 | Oil Operator | Apr 2024 |
| 1556 | Roosevelt Operating Co. | | Oil Operator | Sep 2023 |
| 1557 | Rooster Petroleum, LLC | | Oil & Gas Operator | Feb 2011 |
| 1558 | Rooster Production, LLC | Oil City, LA 71061 | Oil Operator | Apr 2024 |
| 1559 | Roosth & Genecov Production Co. | Tyler, TX 75710 | Oil & Gas Operator | Aug 2003 |
| 1560 | Roosth Production Co. | Tyler, TX 75711 | Oil & Gas Operator | Apr 2024 |
| 1561 | Root W C | Kellyville, OK 74039 | Oil & Gas Operator | Jan 2021 |
| 1562 | Ropa Exploration Corp. | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2011 |
| 1563 | Ropar Operating Co. | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 2024 |
| 1564 | Roppolo Petroleum Co. | | Oil & Gas Operator | Jan 2000 |
| 1565 | Rorico Oil Company | Argyle, TX 76226 | Oil & Gas Operator | Apr 2024 |
| 1566 | Roring Jr Roy W | Duncan, OK 73533-3048 | Oil & Gas Operator | Aug 2022 |
| 1567 | Roring Roy W | Ardmore, OK 73401 | Oil & Gas Operator | Dec 1998 |
| 1568 | Roring Steven A | Ratliff City, OK 73481-0206 | Oil Operator | Feb 2018 |
| 1569 | Rosa Petroleum | Evansville, WY 82636 | Oil Operator | Dec 1995 |
| 1570 | Rosamond Drilling Co., Inc. | | Gas Operator | Nov 1984 |
| 1571 | Rosbottom Petroleum | | Oil & Gas Operator | Aug 1988 |
| 1572 | Rosbottom Production Corp | Shreveport, LA 71134 | Oil & Gas Operator | Dec 2017 |
| 1573 | Roscoe Gas & Oil Co | Dover, OH 44622 | Oil & Gas Operator | Dec 1991 |
| 1574 | Rose City Resources, LLC | Tyler, TX 75703 | Oil & Gas Operator | Apr 2024 |
| 1575 | Rose Dan And Bill | Henryetta, OK 74437-1450 | Oil & Gas Operator | Dec 2023 |
| 1576 | Rose David | | Oil & Gas Operator | Jul 1995 |
| 1577 | Rose Exploration, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Feb 2002 |
| 1578 | Rose Katherine Stone | | Oil & Gas Operator | Dec 2023 |
| 1579 | Rose Operating Company | Tulsa, OK 74101-2391 | Oil & Gas Operator | Dec 2014 |
| 1580 | Rose Pass Mines, Inc. | | Oil Operator | Oct 1982 |
| 1581 | Rose Petroleum (Utah) LLC | Annapolis, MD 21401 | Oil & Gas Operator | Feb 2024 |
| 1582 | Rose Petroleum Corp | Oklahoma City, OK 73146 | Oil & Gas Operator | Feb 2015 |
| 1583 | Rose Rock Resources Inc | Wagoner, OK 74467-8362 | Oil & Gas Operator | Dec 2023 |
| 1584 | Rose, Lonnie | Troy, WV 26443 | Gas Operator | Dec 2021 |
| 1585 | Rose, Verl | Spring Creek, NV 89815 | Oil & Gas Operator | Feb 2011 |
| 1586 | Roseclare Oil Co | | Oil Operator | Dec 2016 |
| 1587 | Rosehill Operating Company, LLC | Houston, TX 77084 | Oil & Gas Operator | Sep 2021 |
| 1588 | Rosekrans Janet A Dba J Oil Co | | Oil & Gas Operator | Jan 2003 |
| 1589 | Rosel Energy, Inc. | Liberal, KS 67901 | Oil & Gas Operator | Jul 2004 |
| 1590 | Roseland Oil & Gas Inc | Rockwall, TX 75087 | Oil & Gas Operator | Feb 2003 |
| 1591 | Rosemain 031 LLC | | Oil & Gas Operator | Nov 2023 |
| 1592 | Rosenthal Henry & Co | | Oil Operator | Feb 1994 |
| 1593 | Rosenthal, Stanley H. | Bay City, TX 77404 | Oil & Gas Operator | Dec 2020 |
| 1594 | Rosestone Operating Company, LLC | | Oil & Gas Operator | Dec 2023 |
| 1595 | Rosetta Energy Partners, L P | Dallas, TX 75219 | Oil & Gas Operator | Jul 2009 |
| 1596 | Rosetta Resources Operating LP | San Antonio, TX 78216 | Oil & Gas Operator | Apr 2024 |
| 1597 | Rosewood Resources (HPC), Inc. | | Gas Operator | Dec 1984 |
| 1598 | Rosewood Resources (Poc), Inc. | | Oil & Gas Operator | Dec 1984 |
| 1599 | Rosewood Resources, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Apr 2024 |
| 1600 | Roskee, Inc | | Oil Operator | Dec 2022 |