| 1801 | Russell Operating Company, LLC | Big Lake, TX 76932 | Oil Operator | May 2024 |
| 1802 | Russell Producing, LLC | Menard, TX 76859 | Oil Operator | May 2024 |
| 1803 | Russell Resources, Inc. | | Oil & Gas Operator | Dec 1998 |
| 1804 | Russell, C. M. Oil Company | Lubbock, TX 79423 | Oil & Gas Operator | Jan 2008 |
| 1805 | Russell, Gerald W. | Tulsa, OK 74103 | Oil Operator | Feb 1986 |
| 1806 | Russell, John R | | Oil Operator | Aug 2023 |
| 1807 | Russell, L. J. Oil Company | Snyder, TX 79549 | Oil & Gas Operator | May 2024 |
| 1808 | Russell, Phillip | Colorado City, TX 79512 | Oil & Gas Operator | May 2024 |
| 1809 | Russell, T. Operating Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Aug 2005 |
| 1810 | Rust Oil Corp. | Fort Worth, TX 76108 | Oil & Gas Operator | May 2024 |
| 1811 | Rust Operating Co., Inc. | Fort Worth, TX 76108 | Oil & Gas Operator | Feb 2000 |
| 1812 | Rustler Energy LLC | | Oil & Gas Operator | Jan 2024 |
| 1813 | Ruth Oil Co, LLC | Eunice, NM 88231 | Oil Operator | Mar 2015 |
| 1814 | Ruth Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Feb 2010 |
| 1815 | Ruthco Oil, LLC | Eunice, NM 88231 | Oil Operator | May 2008 |
| 1816 | Rutherford Oil Corporation | Houston, TX 77046 | Oil & Gas Operator | Jun 2019 |
| 1817 | Rutherford, Michael A. | Dallas, TX 75381 | Oil & Gas Operator | May 2000 |
| 1818 | Ruthson Energy, Inc. | Judson, TX 75660 | Oil Operator | May 2024 |
| 1819 | Rutledge, Kenny | Rising Star, TX 76471 | Oil & Gas Operator | May 2024 |
| 1820 | Rutledge, Rome | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 1997 |
| 1821 | Rutledge-Newsom | Wichita Falls, TX 76308 | Oil Operator | May 2024 |
| 1822 | Ruwco Oil And Gas Corp. | Austin, TX 78701 | Oil & Gas Operator | Aug 2021 |
| 1823 | RV Borchert Oil Producer | | Oil & Gas Operator | Dec 2023 |
| 1824 | Rvo Petroleum Co. | | Oil & Gas Operator | Feb 1982 |
| 1825 | RVR Operating Co. | Bedford, TX 76021 | Oil & Gas Operator | Jan 2017 |
| 1826 | RW Oil Co | Lovington, NM BAD ADDR | Oil Operator | Nov 1994 |
| 1827 | RW Operating Corp. | Midland, TX 79702 | Oil & Gas Operator | Jul 2016 |
| 1828 | Rwa Corporation | Houston, TX 77024 | Oil & Gas Operator | Sep 1999 |
| 1829 | Rwa, LLC | Boyd, TX 76023 | Oil & Gas Operator | May 2024 |
| 1830 | Rwit Company Inc | Tulsa, OK 74131-4255 | Oil & Gas Operator | Jul 2018 |
| 1831 | RWJ Operating LLC | Dallas, TX 75201 | Oil & Gas Operator | May 2024 |
| 1832 | RWL Enterprises | | Oil & Gas Operator | Feb 2017 |
| 1833 | RWS Operating Co. LLC | Kilgore, TX 75663 | Oil Operator | May 2024 |
| 1834 | Ry-Co Petroleum | Wann, OK 74083-2052 | Oil & Gas Operator | Feb 2017 |
| 1835 | Ryan Exploration, Inc. | | Oil & Gas Operator | Mar 2012 |
| 1836 | Ryan Oil Co | Sherman Oaks, CA 91413 | Oil Operator | Dec 2021 |
| 1837 | Ryan Petroleum Corp | Oklahoma City, OK 73102-9024 | Oil & Gas Operator | Aug 1994 |
| 1838 | Ryan, Daniel J. | Oklahoma City, OK 73139 | Oil Operator | Sep 2003 |
| 1839 | Ryan, Joseph G. | Graham, TX 76450 | Oil & Gas Operator | May 2024 |
| 1840 | Ryann Operating, LLC | Waller, TX 77484 | Oil & Gas Operator | May 2024 |
| 1841 | Ryca Energy Partners LLC | | Oil Operator | Dec 2023 |
| 1842 | Ryca Energy, LLC | | Oil & Gas Operator | Mar 2015 |
| 1843 | Ryder Scott Management, LLC | Wichita Falls, TX 76307 | Oil & Gas Operator | Mar 2018 |
| 1844 | Ryder Scott Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2005 |
| 1845 | Ryholland Fielder, Inc | Delray Beach, FL 33446 | Oil & Gas Operator | May 2024 |
| 1846 | Rystin Oil & Gas | Sugar Land, TX 77487 | Oil & Gas Operator | May 2024 |