| 2001 | Proline Energy Resources Inc | Sugar Land, TX 77479 | Oil & Gas Operator | Feb 2026 |
| 2002 | Prolithic Energy Company, L.P. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Aug 2002 |
| 2003 | Promise Energy Operations, LLC | Texas City, TX 77592 | Oil Operator | Feb 2026 |
| 2004 | Prompt Operating LLC | Velma, OK 73491 | Oil Operator | Nov 2025 |
| 2005 | Pronghorn Management Corporation | Hobbs, NM 88241 | Oil & Gas Operator | Feb 2026 |
| 2006 | Pronghorn Operating LLC | | Oil & Gas Operator | Jan 2023 |
| 2007 | Pronto Services | San Antonio, TX 78209 | Oil & Gas Operator | Feb 2026 |
| 2008 | Propel Energy Company | | Oil Operator | Oct 1991 |
| 2009 | Propel Energy, LLC | Houston, TX 77024 | Oil & Gas Operator | Sep 2013 |
| 2010 | Property Development Group, Inc. | San Antonio, TX 78212 | Oil & Gas Operator | Feb 2026 |
| 2011 | Property Producing Co. | Columbus, TX 78934 | Gas Operator | Feb 2026 |
| 2012 | Propp Production | Azle, TX 76020 | Oil & Gas Operator | Apr 2007 |
| 2013 | Propp Production, LLC | Azle, TX 76020 | Gas Operator | Mar 2016 |
| 2014 | Prospctv Invstmnt & TRDG Co, LTD | Tulsa, OK 74170 | Oil & Gas Operator | May 2001 |
| 2015 | Prospect Energy LLC | | Oil & Gas Operator | Jan 2024 |
| 2016 | Prospect Enterprises Inc | Wetumka, OK 74883-0068 | Oil & Gas Operator | Apr 2004 |
| 2017 | Prospect Oil & G | | Oil Operator | Feb 1996 |
| 2018 | Prospect Oil & Gas Corp | Russell, KS 67665 | Oil Operator | Sep 2025 |
| 2019 | Prospecta Energy Group, Inc. | Brownwood, TX 76801 | Oil Operator | Feb 2026 |
| 2020 | Prospective Inv. & Trading Co., LTD., The | Tulsa, OK 74170 | Oil Operator | Dec 2019 |
| 2021 | Prospective Invest & Trad Co LTD | Tulsa, OK 74170 | Oil & Gas Operator | Aug 2005 |
| 2022 | Prospective Investment & Trading | Scottsdale, AZ 85261-4190 | Oil & Gas Operator | Jun 2016 |
| 2023 | Prospective Investment & Trading Co., LTD. | Tulsa, OK 74170-2320 | Oil & Gas Operator | Apr 2014 |
| 2024 | Prospective Investment & Trding Co LTD | | Oil & Gas Operator | Sep 2012 |
| 2025 | Prospective Investment And Trading Co (The) | Tulsa, OK 741702320 | Oil & Gas Operator | Jun 2005 |
| 2026 | Prospective Invs | | Oil & Gas Operator | Jun 1994 |
| 2027 | Prospectors LTD., The | Somerset, TX 78069 | Oil & Gas Operator | Jun 2002 |
| 2028 | Prosper Energy Corp. | | Oil & Gas Operator | Oct 1988 |
| 2029 | Prosper Oil & Gas,Inc. | Dallas, TX 75201 | Oil & Gas Operator | Feb 2026 |
| 2030 | Prospera Energy, Inc. | | Oil & Gas Operator | Dec 2005 |
| 2031 | Prosperous Oil & Gas Inc | Okmulgee, OK 74447 | Oil & Gas Operator | Nov 2025 |
| 2032 | Prostar Energy, LLC | | Oil Operator | Sep 2011 |
| 2033 | Protech Oil & Gas Services, LLC | Laredo, TX 78041 | Gas Operator | Feb 2026 |
| 2034 | Protege Energy II LLC | Tulsa, OK 74135-3252 | Oil & Gas Operator | Dec 2013 |
| 2035 | Protege Energy III LLC | Houston, TX 77024 | Oil & Gas Operator | Sep 2024 |
| 2036 | Protege Energy LLC | Tulsa, OK 74135 | Oil & Gas Operator | Jan 2018 |
| 2037 | Proteus Petroleum, Inc. | | Oil & Gas Operator | Nov 1983 |
| 2038 | Protho Energy Service LLC | | Oil & Gas Operator | Dec 2025 |
| 2039 | Proton Energy, L.L.C. | Houston, TX 77002 | Oil & Gas Operator | Jun 2005 |
| 2040 | Prough A J | Gotebo, OK 73041 | Oil Operator | Apr 2014 |
| 2041 | Provecho Partners | Hays, KS 67601 | Oil Operator | Apr 2005 |
| 2042 | Proven Fuel Exploration, Inc. | | Oil & Gas Operator | Mar 2022 |
| 2043 | Proven Natural Resources LLC | Canton, TX 75103 | Oil & Gas Operator | Feb 2026 |
| 2044 | Proven Oil Production | | Oil Operator | Mar 2002 |
| 2045 | Proven Petroleum, Inc. | Lakewood, CO 80228 | Oil & Gas Operator | Dec 2025 |
| 2046 | Proven Reserves Management, Inc. | Dallas, TX 75370 | Oil & Gas Operator | Nov 2025 |
| 2047 | Proven Reserves Production Co | Richardson, TX 75080 | Oil & Gas Operator | Nov 1998 |
| 2048 | Providence Energ | | Oil & Gas Operator | Jul 1988 |
| 2049 | Providence Energy Corporation | Broken Arrow, OK 74013-3783 | Oil & Gas Operator | Feb 1994 |
| 2050 | Providence Energy Servs Inc.-Kelton Op Corp | Andrews, TX 79714 | Oil & Gas Operator | Dec 2025 |
| 2051 | Providence Exploration & Production Inc | Fort Smith, AR 72913-5171 | Gas Operator | Dec 2012 |
| 2052 | Providence Oil & Gas Corp | Tulsa, OK 74135-5463 | Oil & Gas Operator | May 2005 |
| 2053 | Providence Oil Prod. | Freer, TX 78357 | Oil & Gas Operator | Feb 2026 |
| 2054 | Providence Operating LLC Dba Poco Operating | | Oil & Gas Operator | Nov 2025 |
| 2055 | Provident Energy Of Montana, LLC | Cut Bank, MT 59427 | Oil Operator | Dec 2025 |
| 2056 | Provident Oil & Gas Co | Akron, OH 44313 | Oil & Gas Operator | Dec 1989 |
| 2057 | Provident Oil & Gas Corp | Akron, OH 44333 | Oil & Gas Operator | Dec 1991 |
| 2058 | Provident Resources LTD | | Oil & Gas Operator | Dec 1986 |
| 2059 | Provine, B.R. | Wichita, KS 67226 | Oil Operator | Apr 2010 |
| 2060 | Prudent Resources LLC | Houston, TX 77042 | Oil & Gas Operator | Feb 2026 |
| 2061 | Prudential Oil & Gas, Inc. | | Oil & Gas Operator | Jul 1987 |
| 2062 | Prudential Petroleum Co., LTD. | | Oil & Gas Operator | Dec 1990 |
| 2063 | Pruet & Hughes | | Oil & Gas Operator | Jul 1977 |
| 2064 | Pruet & Hughes Operating Co. | | Oil & Gas Operator | May 1981 |
| 2065 | Pruet - Hughes Company | | Oil & Gas Operator | Jan 1978 |
| 2066 | Pruet Production Co. | Jackson, MS 39201 | Oil & Gas Operator | Dec 2025 |
| 2067 | Pruet Production Co. & Moon & Hines | | Oil & Gas Operator | Jun 2013 |
| 2068 | Pruet Production Co.-Midroc Oper. Co. & Watkins, H. Vaughan,Jr. | | Oil & Gas Operator | Sep 1994 |
| 2069 | Pruett, Cecil | Borger, TX 79008 | Oil & Gas Operator | Aug 2003 |
| 2070 | Pruitt Engineering & Petro. Co. | Kerrville, TX 78028 | Oil & Gas Operator | Jul 2007 |
| 2071 | Pruitt L Oil Properties | Oklahoma City, OK 73162-7758 | Oil & Gas Operator | Dec 2000 |
| 2072 | Pruitt Oil & Gas | Decatur, TX 76234 | Oil & Gas Operator | Feb 2018 |
| 2073 | Pruitt Operating Company LLC | Ratliff City, OK 73481-5802 | Oil & Gas Operator | Dec 2025 |
| 2074 | Pruitt, Cecil, Jr. | Chantilly, VA 22021-2105 | Oil & Gas Operator | Dec 2014 |
| 2075 | Prusack, James | Grantsville, WV 26147-0180 | Oil & Gas Operator | Dec 2021 |
| 2076 | Pryme Energy, LLC | | Oil & Gas Operator | Feb 2015 |
| 2077 | Pryor Oil Compan | | Oil & Gas Operator | Nov 1994 |
| 2078 | Pryor Petroleum Corporation | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2026 |
| 2079 | Pryor VIctor W Jr | Holdenville, OK 74848 | Oil & Gas Operator | Apr 2017 |
| 2080 | Pryor, Curtis | Lubbock, TX 79424 | Oil & Gas Operator | Dec 1998 |
| 2081 | PS126 Investments LLC | | Oil & Gas Operator | Nov 2025 |
| 2082 | Psa Inc | Chandler, OK 74834-4222 | Oil & Gas Operator | Dec 2025 |
| 2083 | Psa Producers | Hobbs, NM 88241 | Oil & Gas Operator | Jun 1995 |
| 2084 | PSC Industrial Outsourcing, LP | | Oil Operator | Dec 2024 |
| 2085 | Psec Inc | Tulsa, OK 74102-0871 | Oil & Gas Operator | Dec 2016 |
| 2086 | Psi Production, Inc. | Tyler, TX 75702 | Gas Operator | Jan 1994 |
| 2087 | PSM Oil Production LLC | | Oil Operator | Jan 2025 |
| 2088 | PSP Operating, Inc. | Lubbock, TX 79413 | Oil & Gas Operator | Jun 1999 |
| 2089 | PT II LTD | | Oil & Gas Operator | Oct 2004 |
| 2090 | PT Oil LLC | Osage City, KS 66523 | Oil & Gas Operator | Jul 2025 |
| 2091 | PT Petroleum, LLC | Argyle, TX 76226 | Oil & Gas Operator | Oct 2019 |
| 2092 | Ptarmigan Inc | Leavenworth, KS 66048 | Oil Operator | Nov 2009 |
| 2093 | Pubco Petroleum Corp | Albuquerque, NM 87104 | Oil & Gas Operator | Dec 1981 |
| 2094 | Public Service Company Of Okla | Tulsa, OK 74102 | Gas Operator | Jun 2001 |
| 2095 | Publishers Petroleum | Dallas, TX 75219 | Oil & Gas Operator | Aug 2003 |
| 2096 | Puckett Land Company | | Oil & Gas Operator | Dec 2020 |
| 2097 | Puckett Oil, LLC | Irvine, KY 40336 | Oil Operator | Dec 2023 |
| 2098 | Puckett-Warren Oil Co | | Oil Operator | Dec 2004 |
| 2099 | Pueblo Oil & Gas Inc. | | Gas Operator | Dec 2003 |
| 2100 | Pueblo Petroleum Inc | Roswell, NM 88202 | Oil & Gas Operator | Feb 1997 |