| 1801 | Avian Tech International, Inc. | Euless, TX 76040 | Oil & Gas Operator | Apr 1995 |
| 1802 | Aviara Energy Corporation | Dallas, TX 75201 | Oil & Gas Operator | Jun 2002 |
| 1803 | Avid Energy Assets LLC | Midland, TX 79708 | Oil & Gas Operator | Feb 2026 |
| 1804 | Avighna Energy Inc | Sugar Land, TX 77487 | Oil & Gas Operator | Jan 2019 |
| 1805 | Avips Petroleum, Inc. | Abilene, TX 79605 | Oil & Gas Operator | Jun 1996 |
| 1806 | Aviva America, Inc. | | Oil & Gas Operator | Nov 2013 |
| 1807 | Avoca Farms LTD | Avoca, NY 14809 | Gas Operator | Dec 2024 |
| 1808 | Avon Energy Corp | Oklahoma City, OK 73102 | Oil & Gas Operator | Oct 1996 |
| 1809 | Avondale Operating Co | Tulsa, OK 74145-7627 | Oil & Gas Operator | Apr 2019 |
| 1810 | Avra Oil Co | Dallas, TX 75248 | Oil & Gas Operator | Feb 2026 |
| 1811 | Aw Hembree Co | Shawnee, OK 74802-1725 | Oil & Gas Operator | Nov 2025 |
| 1812 | Aw Tipka Oil & Gas Inc | Dover, OH 44622 | Oil & Gas Operator | Dec 2024 |
| 1813 | Awp Operating Company | George West, TX 78022 | Oil & Gas Operator | Feb 2026 |
| 1814 | Ax Operating, L.L.C. | | Oil & Gas Operator | Jul 2018 |
| 1815 | Axem Resources I | | Oil Operator | Aug 1995 |
| 1816 | Axem Resources Inc | Denver, CO 80202-4617 | Oil & Gas Operator | Jul 2013 |
| 1817 | Axeon Energy Operations LLC | Evergreen, CO 80439-7624 | Oil Operator | Jul 2015 |
| 1818 | Axia Energy II LLC | HGHLNDS Ranch, CO 80129 | Oil & Gas Operator | Jan 2020 |
| 1819 | Axia Energy III LLC | Highlands Ranch, CO 80129 | Oil & Gas Operator | Sep 2025 |
| 1820 | Axia Energy LLC | Hghlands Ranch, CO 80129-2258 | Oil & Gas Operator | Apr 2015 |
| 1821 | Axio Production Company, L.P. | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2006 |
| 1822 | Axiom Energy LLC | Park City, UT 84098 | Oil Operator | Feb 2010 |
| 1823 | Axiom Tep, LLC | | Oil & Gas Operator | May 2015 |
| 1824 | Axis Energy Corporation | Roswell, NM 88202 | Oil & Gas Operator | Feb 2026 |
| 1825 | Axis Exploration LLC | | Oil & Gas Operator | Dec 2025 |
| 1826 | Axis Onshore, LLC | | Oil & Gas Operator | Apr 2008 |
| 1827 | Axis Onshore, LP | | Oil & Gas Operator | Dec 2010 |
| 1828 | Axis Petroleum Co. | | Oil & Gas Operator | Dec 2022 |
| 1829 | Axp Energy, Inc | Lexington, KY 40509 | Oil & Gas Operator | Dec 2023 |
| 1830 | Axtel Energy, Inc. | Richardson, TX 75080 | Oil & Gas Operator | Feb 2026 |
| 1831 | Aycox Robert D | Healdton, OK 73438 | Oil Operator | Sep 2022 |
| 1832 | Ayers Energy, Inc. | Oklahoma City, OK 73177 | Oil & Gas Operator | Dec 1995 |
| 1833 | Ayers Oil Co. | Crystal City, TX 78839 | Oil & Gas Operator | Sep 1995 |
| 1834 | Ayers, Milan R. | | Gas Operator | Oct 2000 |
| 1835 | Ayers, R.B. | Sidney, TX 76474 | Oil & Gas Operator | Apr 2003 |
| 1836 | Ayluma Operating Inc | Dewar, OK 74437 | Oil & Gas Operator | Oct 2024 |
| 1837 | Aylward Drilling | | Oil & Gas Operator | Dec 1986 |
| 1838 | Ayres Oil, Inc. | Holliday, TX 76366 | Oil & Gas Operator | Aug 2003 |
| 1839 | Ayres, C. D. | Iowa Park, TX 76367 | Oil & Gas Operator | Feb 2026 |
| 1840 | Ayres, Joe D. | Holliday, TX 76366 | Oil & Gas Operator | Dec 2004 |
| 1841 | Azalea Oil Company LLC | Castle Rock, CO 80108 | Oil Operator | Jan 2026 |
| 1842 | Azar Marsha | Chicago, IL 60618 | Oil Operator | Jan 2025 |
| 1843 | Azariah Operating, LLC | Midland, TX 79707 | Oil & Gas Operator | Dec 2025 |
| 1844 | Azco Opr Co | Phoenix, AZ 85076-0535 | Oil & Gas Operator | Dec 2001 |
| 1845 | Azimuth Energy, LLC | Denver, CO 80203 | Oil & Gas Operator | Sep 2006 |
| 1846 | Azkan Oil & Gas LLC | | Oil Operator | Jul 2024 |
| 1847 | Aztec Drilling & Operating, LLC | Houston, TX 77056 | Oil & Gas Operator | Sep 2015 |
| 1848 | Aztec Energy Corporation | San Antonio, TX 78209 | Oil & Gas Operator | Apr 2002 |
| 1849 | Aztec Energy, LLC | Wichita Falls, TX 76301 | Oil Operator | Feb 2026 |
| 1850 | Aztec Exploration Inc | Oklahoma City, OK 73143 | Oil & Gas Operator | May 2013 |
| 1851 | Aztec Gas And Oil Corporation | Elephant Butte, NM 87935-0370 | Oil & Gas Operator | Mar 2005 |
| 1852 | Aztec Oil & Gas Company | | Oil & Gas Operator | Mar 1978 |
| 1853 | Aztec Oil & Gas Company "A" | Wichita Falls, TX 76309 | Oil & Gas Operator | Sep 2010 |
| 1854 | Aztec Oil Co | | Oil & Gas Operator | Dec 1977 |
| 1855 | Aztec Oil Operating LLC | El Dorado, KS 67042 | Oil & Gas Operator | Sep 2025 |
| 1856 | Aztec Petroleum Corp. | Dallas, TX 75230 | Oil & Gas Operator | Oct 1994 |
| 1857 | Aztec Producing Company Inc | | Oil & Gas Operator | May 2022 |
| 1858 | Aztec Production Company | | Oil & Gas Operator | Jan 1996 |
| 1859 | Aztec-Solatex | | Gas Operator | Aug 1978 |
| 1860 | Azteca Operating, Inc. | Electra, TX 76360 | Oil Operator | Feb 2026 |
| 1861 | Azteca Petroleum, LLC | Fort Worth, TX 76106 | Oil & Gas Operator | Feb 2026 |
| 1862 | Aztel Operating Inc. | Windthorst, TX 76389 | Oil Operator | Oct 2003 |
| 1863 | Aztex Petroleum | Chandler, AZ 85249 | Oil & Gas Operator | Feb 2026 |
| 1864 | Azul Operating, LLC | | Gas Operator | Dec 2024 |
| 1865 | Azul, Inc. | Buffalo Gap, TX 79508 | Oil & Gas Operator | Aug 1995 |
| 1866 | Azure Energy LTD | Tulsa, OK 74135-7825 | Oil & Gas Operator | Dec 2025 |
| 1867 | B & A Oil Services LLC | Henderson, KY 42420 | Oil Operator | Dec 2023 |
| 1868 | B & B #1 LLC | Chandler, OK 74834 | Oil & Gas Operator | Nov 2025 |
| 1869 | B & B Drilling Co. | Milano, TX 76556 | Oil & Gas Operator | Jul 2015 |
| 1870 | B & B Energy | Kermit, TX 79745 | Oil & Gas Operator | Feb 2026 |
| 1871 | B & B Energy (I) | Imperial, TX 79743 | Oil & Gas Operator | Feb 2026 |
| 1872 | B & B Enterprises | | Oil Operator | Jan 2025 |
| 1873 | B & B Farm Industries, Inc. | Spearman, TX 79081 | Oil & Gas Operator | Apr 2002 |
| 1874 | B & B Oil | Lyons, KS 67554 | Oil Operator | Oct 2025 |
| 1875 | B & B Oil % Willie Booth | El Dorado, KS 67042 | Oil Operator | Oct 2001 |
| 1876 | B & B Oil & Gas Co., Inc. | | Gas Operator | Feb 1991 |
| 1877 | B & B Oil & Gas Prod Co | Dayton, PA 16222-5722 | Oil & Gas Operator | Dec 2019 |
| 1878 | B & B Oil Compan | | Oil & Gas Operator | Jul 1992 |
| 1879 | B & B Oil Company | Corsicana, TX 75110 | Oil & Gas Operator | Sep 2025 |
| 1880 | B & B Oil Company LTD | | Gas Operator | Mar 2020 |
| 1881 | B & B Oil LLC | Havana, KS 67347 | Oil & Gas Operator | Dec 2025 |
| 1882 | B & B Oil Recovery | | Oil Operator | Sep 2025 |
| 1883 | B & B Oil Well Service Company, Inc | | Oil Operator | Aug 1988 |
| 1884 | B & B Oil, Inc. | Kerrville, TX 78028 | Oil & Gas Operator | Feb 2026 |
| 1885 | B & B Oilfield Services Inc | Windham, OH 44288 | Oil & Gas Operator | Dec 2024 |
| 1886 | B & B Operating Company | Odessa, TX 79760 | Oil & Gas Operator | Feb 2026 |
| 1887 | B & B Operations Inc | Knowles, OK 73844-0520 | Gas Operator | Jul 2017 |
| 1888 | B & B Petroleum | Fleming, OH 45729 | Oil & Gas Operator | Dec 2006 |
| 1889 | B & B Production Co | Midland, TX 79708 | Oil & Gas Operator | Dec 2002 |
| 1890 | B & B Resources | Tulsa, OK 74136-2655 | Oil & Gas Operator | Dec 2025 |
| 1891 | B & B Resources Inc | Somerset, KY 42501 | Oil & Gas Operator | Dec 2019 |
| 1892 | B & B SWD LLC | Kingfisher, OK 73750 | Oil Operator | Dec 2025 |
| 1893 | B & B Tool Company Inc | Lindsay, OK 73052 | Oil & Gas Operator | Nov 2025 |
| 1894 | B & B Wolford Family Holdings LLC | Frazeysburg, OH 43822 | Oil Operator | Dec 2024 |
| 1895 | B & C Drilling Company Inc | Holdenville, OK 74848-0961 | Oil & Gas Operator | Mar 2000 |
| 1896 | B & C Oil, A General Partnership | Erie, KS 66733 | Oil Operator | Nov 1999 |
| 1897 | B & D Enterprises | Breckenridge, TX 76424 | Oil & Gas Operator | Mar 2014 |
| 1898 | B & D Oil & Gas LLC | Bristow, OK 74010 | Gas Operator | Jun 2024 |
| 1899 | B & D Oil Inc | Bristow, OK 74010-2801 | Oil & Gas Operator | Feb 2017 |
| 1900 | B & D Oil, LLC | Welda, KS 66091 | Oil Operator | Aug 2025 |