| 1801 | Presidio Energy, Inc. | | Oil & Gas Operator | Jan 1992 |
| 1802 | Presidio Exploration, Inc. | Englewood, CO 80155 | Oil & Gas Operator | May 1999 |
| 1803 | Presidio Oil & Gas, Inc. | | Oil & Gas Operator | Dec 2024 |
| 1804 | Presidio Petroleum LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2025 |
| 1805 | Presidium Energy LC | | Oil & Gas Operator | Jul 2016 |
| 1806 | Presley Operating LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2025 |
| 1807 | Presley Petroleum Company | Newport Beach, CA 92658-2200 | Oil & Gas Operator | Oct 1999 |
| 1808 | Presley Prod Investments, LLC | Abilene, TX 79604 | Oil Operator | Apr 2025 |
| 1809 | Press Holdings LLC | Forestville, NY 14062 | Gas Operator | Dec 2023 |
| 1810 | Pressly Oil Interest, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Apr 2025 |
| 1811 | Pressure Pumping Services LLC | Blackwell, OK 74631-2466 | Oil & Gas Operator | Jan 2025 |
| 1812 | Prestco, LLC | Ozona, TX 76943 | Oil & Gas Operator | Apr 2025 |
| 1813 | Preston Carter Oil Company | Davis, OK 73030 | Oil & Gas Operator | Jan 2025 |
| 1814 | Preston Exploration LLC | Spring, TX 77387 | Oil & Gas Operator | Dec 2014 |
| 1815 | Preston Oil Co | Woodlands, TX 77380 | Oil & Gas Operator | Dec 2009 |
| 1816 | Preston, John WM. | Houston, TX 77004 | Oil & Gas Operator | May 2004 |
| 1817 | Prestonsburg Citys Utilities Com | Prestonsburg, KY 41653 | Oil & Gas Operator | Dec 2023 |
| 1818 | Prestonwood Operating LLC | Addison, TX 75001 | Oil Operator | Apr 2025 |
| 1819 | Prestonwood WF LLC | Addison, TX 75001 | Oil Operator | Apr 2025 |
| 1820 | Preuitt Production Service | | Oil Operator | Dec 2024 |
| 1821 | Prevail Energy, Inc | Corpus Chrsti, TX 78469 | Oil & Gas Operator | Apr 2025 |
| 1822 | Prevost Operating, L.L.C. | Kilgore, TX 75663 | Oil Operator | Dec 1998 |
| 1823 | Pri Operating, LLC | Austin, TX 78730 | Oil & Gas Operator | Apr 2025 |
| 1824 | Pri Producing Inc | Houston, TX 77002 | Oil & Gas Operator | Jan 2006 |
| 1825 | Priam Operating Company | Tulsa, OK 74114 | Oil & Gas Operator | Jul 2022 |
| 1826 | Price Brothers Oil Co | Duncan, OK 73533 | Oil Operator | Feb 1996 |
| 1827 | Price Drilling & Exploration Co. | Benavides, TX 78341 | Oil & Gas Operator | Jul 2013 |
| 1828 | Price J R Inc | Addington, OK 73520-0099 | Oil & Gas Operator | Apr 2015 |
| 1829 | Price Oil & Gas Co. | Houston, TX 77254 | Oil & Gas Operator | Feb 2002 |
| 1830 | Price Operating Company Inc | Nowata, OK 74048 | Oil & Gas Operator | Mar 2020 |
| 1831 | Price Operating, LLC | Sugar Land, TX 77496 | Oil Operator | Apr 2025 |
| 1832 | Price River Energy, LLC | Houston, TX 77024 | Gas Operator | Jan 2025 |
| 1833 | Price Robert R O | | Oil Operator | Apr 1995 |
| 1834 | Price, Ernest, Jr. | Atlanta, KS 67008 | Oil Operator | Jun 1995 |
| 1835 | Price, Robert R. Operating, Inc. | Tulsa, OK 74147 | Oil Operator | May 1996 |
| 1836 | Price, W. H. | Granbury, TX 76048 | Oil & Gas Operator | Jun 2024 |
| 1837 | Price, W. H. & Sons | Granbury, TX 76048 | Oil & Gas Operator | Nov 1997 |
| 1838 | Prickett Operating Company | Wichita Falls, TX 76302 | Oil & Gas Operator | Mar 2008 |
| 1839 | Prickett, Jimmy | Wichita Falls, TX 76308 | Oil Operator | Feb 2002 |
| 1840 | Prickly Pair Production | Albany, TX 76430 | Oil & Gas Operator | Apr 2025 |
| 1841 | Pricor-TRC Corporation | Mounds, OK 74047 | Oil & Gas Operator | May 2013 |
| 1842 | Pride Energy Company | Tulsa, OK 74170 | Oil & Gas Operator | Apr 2025 |
| 1843 | Pride Energy Company An Oklahoma GP | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2025 |
| 1844 | Pride Energy Company, A General Partnership | Tulsa, OK 74170 | Oil & Gas Operator | Aug 2021 |
| 1845 | Pride Energy, An Oklahoma General Partnership | | Oil & Gas Operator | Dec 2020 |
| 1846 | Pride Exploration, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jul 2015 |
| 1847 | Pride Ventures LLC | Moab, UT 84532 | Oil & Gas Operator | Dec 2024 |
| 1848 | Priest Petroleum Corporation | Houston, TX 77002 | Oil & Gas Operator | Apr 2025 |
| 1849 | Prima Exploration, Inc. | Denver, CO 80206 | Oil & Gas Operator | Feb 2025 |
| 1850 | Prima Oil & Gas Company | Denver, CO 80202 | Gas Operator | Sep 1998 |
| 1851 | Primal Energy Corporation | The Woodlands, TX 77380 | Oil & Gas Operator | Apr 2025 |
| 1852 | Primary Energy Co. | | Gas Operator | Jul 1999 |
| 1853 | Primary Fuels Inc | Midland, TX 79701-4410 | Oil & Gas Operator | Mar 1991 |
| 1854 | Primary Natural Resources III LLC | Tulsa, OK 74136-6351 | Oil & Gas Operator | Feb 2025 |
| 1855 | Primary Natural Resources Inc. | Tulsa, OK 74136-6351 | Oil & Gas Operator | Mar 2023 |
| 1856 | Primary Natural Resources IV LLC | Tulsa, OK 74136-6351 | Oil & Gas Operator | Sep 2017 |
| 1857 | Prime Energy Corp | Charleston, WV 25301-1707-1707 | Oil & Gas Operator | Sep 2015 |
| 1858 | Prime Natural Resources, Inc. | Houston, TX 77042 | Oil & Gas Operator | Jun 2007 |
| 1859 | Prime Operating | Queen City, TX 75572 | Oil & Gas Operator | Apr 2005 |
| 1860 | Prime Operating Company | Houston, TX 77024 | Oil & Gas Operator | Apr 2025 |
| 1861 | Prime Rock Resources La LLC | | Oil & Gas Operator | Dec 2024 |
| 1862 | Prime Time Energy Investment Inc | MT Vernon, OH 43050 | Oil & Gas Operator | Dec 2024 |
| 1863 | Prime Time Oil & Gas Co., LTD. | Ruidoso, NM 88345 | Oil & Gas Operator | Mar 2003 |
| 1864 | Prime Western Development, Inc. | Dallas, TX 75230 | Oil & Gas Operator | Dec 1998 |
| 1865 | Primera Energy, LLC | Longview, TX 75606 | Oil & Gas Operator | Mar 2016 |
| 1866 | Primero Operating, Inc. | Roswell, NM 88202 | Oil & Gas Operator | Jun 2022 |
| 1867 | Primewest Petroleum Inc. | Centennial, CO 80111 | Oil & Gas Operator | Jan 2009 |
| 1868 | Primexx Operating Corporation | Dallas, TX 75206 | Oil & Gas Operator | Mar 2024 |
| 1869 | Primo Petroleum, LLC | Austin, TX 78729 | Oil Operator | Dec 2019 |
| 1870 | Primos & Luffey Gas Co. | | Gas Operator | May 2021 |
| 1871 | Primos Oil & Gas Corp. | | Gas Operator | Dec 2001 |
| 1872 | Primos Production | | Oil & Gas Operator | Dec 2024 |
| 1873 | Primos-Pennzoil JV | | Gas Operator | Feb 2005 |
| 1874 | Primrose Jimmie | | Oil Operator | Feb 1998 |
| 1875 | Primrose Oil LLC | Oil Springs, KY 41238 | Oil & Gas Operator | Dec 2023 |
| 1876 | Primrose Operating Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Jun 2007 |
| 1877 | Primrose Resources, LLC | Cedar Park, TX 78630 | Oil & Gas Operator | Apr 2025 |
| 1878 | Princ, Frank | Wilson, KS 67490 | Oil Operator | Sep 2024 |
| 1879 | Prince Brothers Drilling Co | Electra, TX 76360 | Oil & Gas Operator | Apr 2015 |
| 1880 | Prince Petroleum Company, Inc. | Salem, WV 26426 | Oil & Gas Operator | Dec 2014 |
| 1881 | Prince Properties, Inc. | Electra, TX 76360 | Oil & Gas Operator | Aug 2003 |
| 1882 | Princess Three Corporation | Henderson, TX 75653 | Oil & Gas Operator | Apr 2020 |
| 1883 | Princess Three Operating, LLC | Henderson, TX 75653 | Oil & Gas Operator | Apr 2025 |
| 1884 | Princeton Natural Gas LLC | | Gas Operator | Dec 2024 |
| 1885 | Principal Oil Corp. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2002 |
| 1886 | Principle Petroleum LLC | Dallas, TX 75313 | Oil Operator | Feb 2025 |
| 1887 | Pringle Operating Co. | Tulsa, OK 74103 | Oil & Gas Operator | Aug 2015 |
| 1888 | Pringle Resources, Inc. | Houston, TX 77019 | Oil & Gas Operator | Apr 2025 |
| 1889 | Prior, Ferrell L | | Oil & Gas Operator | Dec 2021 |
| 1890 | Priority Energy LLC | Summerland, CA 93067 | Oil & Gas Operator | Apr 2016 |
| 1891 | Priority Holdings LLC | Marlow, OK 73055 | Oil Operator | Feb 2025 |
| 1892 | Priority Oil & Gas LLC | Lakewood, CO 80227 | Gas Operator | Dec 2019 |
| 1893 | Priority Oil Company LLC | Luling, TX 78648 | Oil Operator | Apr 2025 |
| 1894 | Priority Production, LLC | | Gas Operator | Dec 2021 |
| 1895 | Prisum Ventures | | Oil & Gas Operator | Oct 1995 |
| 1896 | Pritchard Engineering | | Oil & Gas Operator | Mar 1989 |
| 1897 | Pritz Maurice G | | Oil Operator | Oct 1990 |
| 1898 | Private Oil Industries Inc | | Oil & Gas Operator | Feb 2004 |
| 1899 | Privateer Energy LLC | Warren, NJ 07059 | Oil Operator | Apr 2025 |
| 1900 | Prize Exploration & Prod, LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2025 |