| 1801 | Ayers Oil Co. | Crystal City, TX 78839 | Oil & Gas Operator | Sep 1995 |
| 1802 | Ayers, R.B. | Sidney, TX 76474 | Oil & Gas Operator | Apr 2003 |
| 1803 | Ayluma Operating Inc | Dewar, OK 74437 | Oil & Gas Operator | Oct 2024 |
| 1804 | Aylward Drilling | | Oil & Gas Operator | Dec 1986 |
| 1805 | Ayres, C. D. | Iowa Park, TX 76367 | Oil & Gas Operator | Apr 2025 |
| 1806 | Ayres, Joe D. | Holliday, TX 76366 | Oil & Gas Operator | Dec 2004 |
| 1807 | Azalea Oil Company LLC | Castle Rock, CO 80108 | Oil Operator | Feb 2025 |
| 1808 | Azar Marsha | Chicago, IL 60618-4309 | Oil Operator | Jan 2025 |
| 1809 | Azco Opr Co | Phoenix, AZ 85076-0535 | Oil & Gas Operator | Dec 2001 |
| 1810 | Azimuth Energy, LLC | Denver, CO 80203 | Oil & Gas Operator | Sep 2006 |
| 1811 | Azkan Oil & Gas LLC | | Oil Operator | Jul 2024 |
| 1812 | Aztec Drilling & Operating, LLC | Houston, TX 77056 | Oil & Gas Operator | Sep 2015 |
| 1813 | Aztec Energy, LLC | Wichita Falls, TX 76301 | Oil Operator | Apr 2025 |
| 1814 | Aztec Exploration Inc | Oklahoma City, OK 73143 | Oil & Gas Operator | May 2013 |
| 1815 | Aztec Gas And Oil Corporation | Elephant Butte, NM 87935-0370 | Oil & Gas Operator | Mar 2005 |
| 1816 | Aztec Oil & Gas Company | | Oil & Gas Operator | Mar 1978 |
| 1817 | Aztec Oil & Gas Company "A" | Wichita Falls, TX 76309 | Oil & Gas Operator | Sep 2010 |
| 1818 | Aztec Oil Co | | Oil & Gas Operator | Dec 1977 |
| 1819 | Aztec Oil Operating LLC | El Dorado, KS 67042 | Oil & Gas Operator | Dec 2024 |
| 1820 | Aztec Producing Company Inc | | Oil & Gas Operator | May 2022 |
| 1821 | Aztec Production Company | | Oil & Gas Operator | Jan 1996 |
| 1822 | Azteca Operating, Inc. | Electra, TX 76360 | Oil Operator | Apr 2025 |
| 1823 | Azteca Petroleum, LLC | Fort Worth, TX 76106 | Oil & Gas Operator | Apr 2025 |
| 1824 | Aztel Operating Inc. | Windthorst, TX 76389 | Oil Operator | Oct 2003 |
| 1825 | Aztex Petroleum | Chandler, AZ 85249 | Oil & Gas Operator | Apr 2025 |
| 1826 | Azul Operating, LLC | | Gas Operator | Dec 2024 |
| 1827 | Azul, Inc. | Buffalo Gap, TX 79508 | Oil & Gas Operator | Aug 1995 |
| 1828 | Azure Energy LTD | Tulsa, OK 74135-7825 | Oil & Gas Operator | Feb 2025 |
| 1829 | B & A Oil Services LLC | Henderson, KY 42420 | Oil Operator | Dec 2023 |
| 1830 | B & B #1 LLC | Chandler, OK 74834 | Oil & Gas Operator | Jan 2025 |
| 1831 | B & B Drilling Co. | Milano, TX 76556 | Oil & Gas Operator | Jul 2015 |
| 1832 | B & B Energy | Kermit, TX 79745 | Oil & Gas Operator | Apr 2025 |
| 1833 | B & B Energy (I) | Imperial, TX 79743 | Oil & Gas Operator | Apr 2025 |
| 1834 | B & B Enterprises | | Oil Operator | Jan 2025 |
| 1835 | B & B Farm Industries, Inc. | Spearman, TX 79081 | Oil & Gas Operator | Apr 2002 |
| 1836 | B & B Oil | Lyons, KS 67554 | Oil & Gas Operator | Aug 2024 |
| 1837 | B & B Oil % Willie Booth | El Dorado, KS 67042 | Oil Operator | Oct 2001 |
| 1838 | B & B Oil & Gas Co., Inc. | | Gas Operator | Feb 1991 |
| 1839 | B & B Oil & Gas Prod Co | Dayton, PA 16222-5722 | Oil & Gas Operator | Dec 2019 |
| 1840 | B & B Oil Compan | | Oil & Gas Operator | Jul 1992 |
| 1841 | B & B Oil Company | Corsicana, TX 75110 | Oil & Gas Operator | Dec 2024 |
| 1842 | B & B Oil Company LTD | | Gas Operator | Mar 2020 |
| 1843 | B & B Oil Recovery | | Oil Operator | Dec 2024 |
| 1844 | B & B Oil Well Service Company, Inc | | Oil Operator | Aug 1988 |
| 1845 | B & B Oil, Inc. | Kerrville, TX 78028 | Oil & Gas Operator | Apr 2025 |
| 1846 | B & B Oil, LLC | Havana, KS 67347 | Oil Operator | Nov 2024 |
| 1847 | B & B Oilfield Services Inc | Windham, OH 44288 | Oil & Gas Operator | Dec 2024 |
| 1848 | B & B Operating Company | Odessa, TX 79760 | Oil & Gas Operator | Apr 2025 |
| 1849 | B & B Petroleum | Fleming, OH 45729 | Oil & Gas Operator | Dec 2006 |
| 1850 | B & B Production Co | Midland, TX 79708 | Oil & Gas Operator | Dec 2002 |
| 1851 | B & B Resources | Tulsa, OK 74136-2655 | Oil & Gas Operator | Dec 2024 |
| 1852 | B & B Resources, Inc | Somerset, KY 42501 | Oil & Gas Operator | Dec 2019 |
| 1853 | B & B SWD LLC | Kingfisher, OK 73750 | Oil Operator | Feb 2025 |
| 1854 | B & B Tool Company Inc | Lindsay, OK 73052 | Oil & Gas Operator | Jan 2025 |
| 1855 | B & B Wolford Family Holdings LLC | Frazeysburg, OH 43822 | Oil Operator | Dec 2023 |
| 1856 | B & C Drilling Company Inc | Holdenville, OK 74848-0961 | Oil & Gas Operator | Mar 2000 |
| 1857 | B & C Oil, A General Partnership | Erie, KS 66733 | Oil Operator | Nov 1999 |
| 1858 | B & D Enterprises | Breckenridge, TX 76424 | Oil & Gas Operator | Mar 2014 |
| 1859 | B & D Oil Inc | Bristow, OK 74010-2801 | Oil & Gas Operator | Feb 2017 |
| 1860 | B & D Oil, LLC | Welda, KS 66091 | Oil Operator | Nov 2019 |
| 1861 | B & D Operating Company | | Oil & Gas Operator | Apr 1990 |
| 1862 | B & E Oil Corporation | | Oil Operator | Sep 1985 |
| 1863 | B & E Resources LLC | Beverly, OH 45715 | Oil & Gas Operator | Dec 2023 |
| 1864 | B & F Enterprises | Ada, OK 74820 | Oil & Gas Operator | Feb 2002 |
| 1865 | B & F Oil Enterprises | | Oil Operator | Dec 1998 |
| 1866 | B & F Operating Company, Inc. | | Oil & Gas Operator | Mar 1995 |
| 1867 | B & G Energy Corporation | Dallas, TX 75214 | Oil & Gas Operator | Apr 2025 |
| 1868 | B & G Oil | Graham, TX 76450 | Oil & Gas Operator | Mar 2015 |
| 1869 | B & G Oil & Gas Co | Bartlesville, OK 74006 | Oil & Gas Operator | Dec 2000 |
| 1870 | B & G Oil Compan | | Oil Operator | Aug 1994 |
| 1871 | B & G Oil Company | | Oil & Gas Operator | Oct 2007 |
| 1872 | B & H Drilling, A General Partnership | Moline, KS 67353 | Oil Operator | Nov 2009 |
| 1873 | B & H Exploration Company | Talala, OK 74080 | Oil & Gas Operator | Dec 2000 |
| 1874 | B & H Gas, Inc. | Weatherford, TX 76086 | Gas Operator | Aug 2000 |
| 1875 | B & H Oil Co. | Oklahoma City, OK 73108 | Oil & Gas Operator | Jan 2025 |
| 1876 | B & H Oilfield Services | Midland, TX 79702 | Oil & Gas Operator | Jul 1996 |
| 1877 | B & J Developers | | Oil Operator | Oct 1995 |
| 1878 | B & J Developers Inc | Bartlesville, OK 74006-3403 | Oil & Gas Operator | Feb 2020 |
| 1879 | B & J Drilling Co | Danville, OH 43014 | Oil & Gas Operator | Dec 2023 |
| 1880 | B & K Drilling Co | Warren, OH 44481 | Oil & Gas Operator | Dec 1994 |
| 1881 | B & K Oil & Gas Co Inc | Lewisville, OH 43754 | Oil & Gas Operator | Dec 2024 |
| 1882 | B & K Operating Co., Inc. | | Oil Operator | Mar 2000 |
| 1883 | B & K Partnership | Burleson, TX 76028 | Oil Operator | Oct 2024 |
| 1884 | B & L | | Oil Operator | Apr 2016 |
| 1885 | B & L Minerals, Inc. | Houston, TX 77036 | Oil & Gas Operator | Aug 2003 |
| 1886 | B & L Oil | Sardis, OH 43946 | Oil & Gas Operator | Dec 2024 |
| 1887 | B & L Oil Compan | | Oil Operator | Jun 1988 |
| 1888 | B & L Pump & Supply Company | | Oil & Gas Operator | Dec 2024 |
| 1889 | B & M Energy | Midland, TX 79705 | Oil & Gas Operator | Jul 2003 |
| 1890 | B & M Oil & Gas LLC | Bartlesville, OK 74006-5702 | Oil Operator | Jan 2025 |
| 1891 | B & M Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Dec 2011 |
| 1892 | B & M Oil Co.. A General Partner | Eldorado, KS 67042 | Oil Operator | Dec 2024 |
| 1893 | B & M Oilfield Service, Inc. | | Oil Operator | Mar 1999 |
| 1894 | B & M Operating Co., Inc. | Houston, TX 77006 | Oil & Gas Operator | Apr 2025 |
| 1895 | B & M Resources, Inc. | | Oil Operator | Apr 1997 |
| 1896 | B & N Coal Inc | Dexter City, OH 45727 | Oil & Gas Operator | Dec 2023 |
| 1897 | B & N Gas Company, LLC | Marion, KS 66861 | Gas Operator | Dec 2023 |
| 1898 | B & N Oil, LLC | | Oil Operator | Dec 2024 |
| 1899 | B & N Trucking | Quitman, TX 75783 | Oil & Gas Operator | May 1996 |
| 1900 | B & O Drilling Inc | Ada, OK 74820-8065 | Oil & Gas Operator | Sep 2014 |