| 1601 | Roka Resources Inc | Oklahoma City, OK 73139 | Oil & Gas Operator | Sep 2025 |
| 1602 | Roland Carlson LLC | Austin, TX 78705 | Gas Operator | Feb 2026 |
| 1603 | Roland Oil And Gas | Cut Bank, MT 59427 | Oil Operator | Feb 2023 |
| 1604 | Roland Oil Company | Charlotte, TX 78011 | Oil & Gas Operator | Feb 2026 |
| 1605 | Rolfe & Rolfe Oi | | Oil Operator | May 1988 |
| 1606 | Rollar Oil Co., Inc. | | Oil & Gas Operator | Jul 1999 |
| 1607 | Rollert Co., Inc., The | Luling, TX 78648 | Oil & Gas Operator | Nov 2000 |
| 1608 | Rolling Meadows Oil & Gas Development, LLC | Centerville, KS 66014 | Oil Operator | Sep 2025 |
| 1609 | Rollo Resources, LLC | Granbury, TX 76049 | Gas Operator | Feb 2026 |
| 1610 | Roma Oil & Gas | San Antonio, TX 78217 | Oil & Gas Operator | Mar 1999 |
| 1611 | Roma Oil & Gas LLC | Woodsfield, OH 43793 | Oil & Gas Operator | Dec 2024 |
| 1612 | Roma Oil And Gas, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Feb 2026 |
| 1613 | Romac Oil Company, Inc. | Throckmorton, TX 76483 | Oil & Gas Operator | Feb 2026 |
| 1614 | Romack Production Company | Granville, OH 43023 | Oil Operator | Mar 2018 |
| 1615 | Roman Well Services Inc | Lakeville, OH 44638 | Oil & Gas Operator | Dec 2023 |
| 1616 | Romara Energy Inc. | | Oil & Gas Operator | Dec 2017 |
| 1617 | Romax Corporation | Ardmore, OK 73401-8882 | Oil & Gas Operator | Feb 2022 |
| 1618 | Romaxsco Exploration Co., Inc. | | Oil & Gas Operator | Aug 1993 |
| 1619 | Romco | Muenster, TX 76252 | Oil & Gas Operator | Mar 2015 |
| 1620 | Rome Oil, LLC | Lakewood, CO 80232 | Oil Operator | Aug 2025 |
| 1621 | Romine Oil & Gas LTD | Shawnee, OK 74802-3425 | Oil & Gas Operator | Jan 2013 |
| 1622 | Romine Oil & Gas, LLC | Midland, TX 79710 | Oil & Gas Operator | Feb 2026 |
| 1623 | Romines & Warner | Pampa, TX 79065 | Oil & Gas Operator | Jan 2002 |
| 1624 | Romines Operating Group | Pampa, TX 79066 | Oil & Gas Operator | Nov 2022 |
| 1625 | Rominger, R.L. | Wichita Falls, TX 76307 | Oil & Gas Operator | Jan 2015 |
| 1626 | Romo Corp | Farmington, NM 87499 | Gas Operator | Dec 1993 |
| 1627 | Roms Co., Inc. | | Oil Operator | Jun 1983 |
| 1628 | Ron & Dan'S Oil LTD | Barnsdall, OK 74002-0628 | Oil & Gas Operator | May 2011 |
| 1629 | Ron Brooks Corp | | Oil Operator | Sep 1995 |
| 1630 | Ron Knott & Associates,Inc. | | Oil & Gas Operator | Aug 1989 |
| 1631 | Ron'S Oil Oper I | | Oil Operator | Nov 1994 |
| 1632 | Ron'S Oil Operations Inc | Penokee, KS 67659 | Oil Operator | Dec 2018 |
| 1633 | Ron-Bob Oil LLC | Neosho Falls, KS 66758 | Oil Operator | Sep 2025 |
| 1634 | Ronadero Company Inc | Roswell, NM BAD ADDR | Oil & Gas Operator | Dec 1996 |
| 1635 | Ronald A Gibson & Assoc Inc | Avon Lake, OH 44012 | Oil & Gas Operator | Dec 2024 |
| 1636 | Ronald E. Hall | | Oil Operator | Nov 1991 |
| 1637 | Ronald J Nelson | Hobbs, NM 88240 | Oil & Gas Operator | Feb 2006 |
| 1638 | Ronald L Hicks | Aztec, NM 87410 | Oil Operator | Sep 2009 |
| 1639 | Ronald L Nick | Lucinda, PA 16235-3006 | Gas Operator | Dec 2023 |
| 1640 | Ronald M. Sannes | | Oil & Gas Operator | Oct 2016 |
| 1641 | Ronald Russ Prater, Inc. | Eastborough, KS 67207 | Gas Operator | Nov 2024 |
| 1642 | Ronan Company | Springfield, MO 65704 | Oil & Gas Operator | Aug 2013 |
| 1643 | Ronco Energy Resources Inc | Norman, OK 73072 | Oil & Gas Operator | Apr 2015 |
| 1644 | Ronco Incorporat | | Oil Operator | Sep 1988 |
| 1645 | Ronde Operating, LLC | Houston, TX 77006 | Oil & Gas Operator | Mar 2021 |
| 1646 | Rongey Ira E | Sapulpa, OK 74066-9317 | Oil & Gas Operator | May 2013 |
| 1647 | Rongey Oil | Jenks, OK 74037-3621 | Oil & Gas Operator | Jan 2013 |
| 1648 | Ronmar Engineering & Expl Inc | Ada, OK 74820-1402 | Oil Operator | Aug 2013 |
| 1649 | Ronning Gas And Oil LLC | Mesa, AZ 85203 | Oil & Gas Operator | Feb 2026 |
| 1650 | Ronny N. Davis | | Oil Operator | Jan 2025 |
| 1651 | Roof Carl | Indiana, PA 15701 | Gas Operator | Dec 2025 |
| 1652 | Rookstool, William A. | Edmond, OK 73034 | Gas Operator | Jan 1999 |
| 1653 | Roome Exploration Company | Bartlett, TX 76511 | Oil & Gas Operator | Mar 2008 |
| 1654 | Roome Oil Co. | Bartlett, TX 76511 | Oil & Gas Operator | Feb 2026 |
| 1655 | Roon Energy, Inc. | Boones Mill, VA 24065 | Oil Operator | Feb 2026 |
| 1656 | Roosevelt Operating Co. | | Oil Operator | Sep 2023 |
| 1657 | Roosevelt Resources LP | Dallas, TX 75225 | Oil & Gas Operator | Feb 2026 |
| 1658 | Rooster Petroleum, LLC | | Oil & Gas Operator | Feb 2011 |
| 1659 | Rooster Production, LLC | Oil City, LA 71061 | Oil Operator | Jan 2025 |
| 1660 | Roosth & Genecov Production Co. | Tyler, TX 75710 | Oil & Gas Operator | Aug 2003 |
| 1661 | Roosth Production Co. | Tyler, TX 75711 | Oil & Gas Operator | Feb 2026 |
| 1662 | Ropa Exploration Corp. | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2011 |
| 1663 | Ropar Operating Co. | Wichita Falls, TX 76301 | Oil & Gas Operator | Feb 2026 |
| 1664 | Roppolo Petro/Sun Explor& Prod | | Oil & Gas Operator | Sep 1988 |
| 1665 | Roppolo Petroleum Co. | | Oil & Gas Operator | Jan 2000 |
| 1666 | Rorico Oil Company | Argyle, TX 76226 | Oil & Gas Operator | Feb 2026 |
| 1667 | Roring Jr Roy W | Duncan, OK 73533-3048 | Oil & Gas Operator | Aug 2022 |
| 1668 | Roring Roy W | Ardmore, OK 73401 | Oil & Gas Operator | Dec 1998 |
| 1669 | Roring Steven A | Ratliff City, OK 73481-0206 | Oil Operator | Feb 2018 |
| 1670 | Rosa Petroleum | Evansville, WY 82636 | Oil Operator | Dec 1995 |
| 1671 | Rosamond Drilling Co., Inc. | | Gas Operator | Nov 1984 |
| 1672 | Rosbottom Petroleum | | Oil & Gas Operator | Aug 1988 |
| 1673 | Rosbottom Production Corp | Shreveport, LA 71134 | Oil & Gas Operator | Dec 2017 |
| 1674 | Rosbottom-Caruthers Prodgcoinc | | Gas Operator | Nov 1990 |
| 1675 | Rosbottom/Roach | Shreveport, LA 71101 | Oil & Gas Operator | May 1994 |
| 1676 | Roscoe Gas & Oil Co | Dover, OH 44622 | Oil & Gas Operator | Dec 1991 |
| 1677 | Rose City Resources, LLC | Tyler, TX 75703 | Oil & Gas Operator | Feb 2026 |
| 1678 | Rose Dan And Bill | Henryetta, OK 74437 | Oil & Gas Operator | Nov 2025 |
| 1679 | Rose Exploration, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Feb 2002 |
| 1680 | Rose Katherine Stone | | Oil & Gas Operator | Dec 2025 |
| 1681 | Rose Operating Company | Tulsa, OK 74101-2391 | Oil & Gas Operator | Dec 2014 |
| 1682 | Rose Pass Mines, Inc. | | Oil Operator | Oct 1982 |
| 1683 | Rose Petroleum (Us), LLC | Parker, CO 80134 | Oil & Gas Operator | Jul 2016 |
| 1684 | Rose Petroleum (Utah) LLC | Annapolis, MD 21401 | Oil & Gas Operator | Nov 2025 |
| 1685 | Rose Petroleum Corp | Oklahoma City, OK 73146 | Oil & Gas Operator | Feb 2015 |
| 1686 | Rose Rock Resources Inc | Wagoner, OK 74467-8362 | Oil & Gas Operator | Nov 2025 |
| 1687 | Rose, Verl | Spring Creek, NV 89815 | Oil & Gas Operator | Feb 2011 |
| 1688 | Roseclare Oil Co | | Oil Operator | Dec 2016 |
| 1689 | Rosehill Operating Company, LLC | Houston, TX 77084 | Oil & Gas Operator | Sep 2021 |
| 1690 | Rosekrans Janet A Dba J Oil Co | | Oil & Gas Operator | Jan 2003 |
| 1691 | Rosel Energy, Inc. | Liberal, KS 67901 | Oil & Gas Operator | Jul 2004 |
| 1692 | Roseland Oil & Gas Inc | Rockwall, TX 75087 | Oil & Gas Operator | Feb 2003 |
| 1693 | Rosemain 031 LLC | | Oil & Gas Operator | Nov 2025 |
| 1694 | Rosenthal Henry & Co | | Oil Operator | Feb 1994 |
| 1695 | Rosenthal, Stanley H. | Bay City, TX 77404 | Oil & Gas Operator | Dec 2020 |
| 1696 | Rosestone Operating Company, LLC | | Oil & Gas Operator | Dec 2024 |
| 1697 | Rosetta Energy Partners, L P | Dallas, TX 75219 | Oil & Gas Operator | Jul 2009 |
| 1698 | Rosetta Resources Operating LP | San Antonio, TX 78216 | Oil & Gas Operator | Feb 2026 |
| 1699 | Rosewood Resources (HPC), Inc. | | Gas Operator | Dec 1984 |
| 1700 | Rosewood Resources (Poc), Inc. | | Oil & Gas Operator | Dec 1984 |