| 22901 | Petroleum Development Cor | Bridgeport, WV 26330 | Oil & Gas Operator | Dec 2004 |
| 22902 | Petroleum Development Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2017 |
| 22903 | Petroleum Development LLC | | Oil Operator | Jul 2018 |
| 22904 | Petroleum Energy | | Oil & Gas Operator | Mar 1991 |
| 22905 | Petroleum Energy Corp | | Oil & Gas Operator | Aug 2012 |
| 22906 | Petroleum Energy, Inc. | Wichita, KS 67202 | Oil Operator | May 1999 |
| 22907 | Petroleum Engineering & Management Corp. | Casper, WY 82609 | Oil & Gas Operator | Jul 2018 |
| 22908 | Petroleum Engineers, Inc. | | Oil & Gas Operator | Jun 1983 |
| 22909 | Petroleum Enterp | | Oil & Gas Operator | Sep 1995 |
| 22910 | Petroleum Enterprises, Inc. | Hutchinson, KS 67504 | Oil & Gas Operator | May 2001 |
| 22911 | Petroleum Exchange | | Oil & Gas Operator | Oct 1997 |
| 22912 | Petroleum Explo Prod Inc | Oilton, OK 74052 | Oil & Gas Operator | Jan 2017 |
| 22913 | Petroleum Explor | | Oil Operator | Aug 1983 |
| 22914 | Petroleum Exploration Company LTD Dba Petex | | Oil Operator | Feb 2025 |
| 22915 | Petroleum Exploration Company LTD LP | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2025 |
| 22916 | Petroleum Exploration Company LTD., Limited P | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2025 |
| 22917 | Petroleum Futures-Chapman Oil | | Oil & Gas Operator | Jul 1981 |
| 22918 | Petroleum Inc | Wichita, KS 67202 | Oil & Gas Operator | Oct 2021 |
| 22919 | Petroleum Incorp | | Oil & Gas Operator | Apr 1993 |
| 22920 | Petroleum International, Inc. | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2000 |
| 22921 | Petroleum Investment Inc | Oklahoma City, OK 73118 | Oil & Gas Operator | Nov 1998 |
| 22922 | Petroleum Investments, Inc | Shreveport, LA 71101 | Oil & Gas Operator | Dec 1977 |
| 22923 | Petroleum Land Company | Abilene, TX 79606 | Oil & Gas Operator | May 2000 |
| 22924 | Petroleum Manage | | Oil & Gas Operator | Oct 1994 |
| 22925 | Petroleum Management Int'L, Inc. | Sugar Land, TX 77487 | Oil & Gas Operator | Oct 1993 |
| 22926 | Petroleum Management LLC | Platteville, CO 80651 | Oil & Gas Operator | May 2011 |
| 22927 | Petroleum Management Prof Inc | Oklahoma City, OK 73120-1848 | Oil & Gas Operator | Apr 2009 |
| 22928 | Petroleum Management, Inc. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Apr 2025 |
| 22929 | Petroleum Prod. MGMT | | Oil Operator | Nov 1995 |
| 22930 | Petroleum Produc | | Oil & Gas Operator | Dec 1996 |
| 22931 | Petroleum Production Corporation | Rantoul, KS 66079 | Oil Operator | Feb 2024 |
| 22932 | Petroleum Production Engineering | Fulton, TX 78358 | Oil Operator | Feb 2019 |
| 22933 | Petroleum Production Management, Inc. | Shawnee Mission, KS 66202 | Oil & Gas Operator | Nov 2021 |
| 22934 | Petroleum Production MGMT., Inc. | Kansas City, MO 64112 | Oil & Gas Operator | Apr 2025 |
| 22935 | Petroleum Products Inc | | Oil Operator | Jun 1996 |
| 22936 | Petroleum Proper | | Oil & Gas Operator | Nov 1995 |
| 22937 | Petroleum Properties Co Inc | Tulsa, OK 74132-4010 | Oil & Gas Operator | Sep 2012 |
| 22938 | Petroleum Properties MGMT Co LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Aug 2005 |
| 22939 | Petroleum Properties MGMT Corp | | Oil & Gas Operator | Aug 1990 |
| 22940 | Petroleum Properties MGMT. Co. | Oklahoma City, OK 73118 | Oil & Gas Operator | Dec 2014 |
| 22941 | Petroleum Property MGMT, Inc (A) | Fort Worth, TX 76101 | Oil & Gas Operator | May 1994 |
| 22942 | Petroleum Property Services, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Dec 2024 |
| 22943 | Petroleum Recovery & Expl Inc. | | Oil Operator | Oct 1984 |
| 22944 | Petroleum Recovery Systems, L.C. | Houston, TX 77024 | Oil Operator | Apr 2025 |
| 22945 | Petroleum Reserve Corporation | Plymouth MTNG, PA 19462 | Oil & Gas Operator | May 2008 |
| 22946 | Petroleum Resource Management Co | Fort Worth, TX 76107 | Oil & Gas Operator | Jan 2024 |
| 22947 | Petroleum Resource Management Corp | Denver, CO 80203 | Oil & Gas Operator | Mar 2025 |
| 22948 | Petroleum Resource MGMT Co TX | | Oil & Gas Operator | Sep 2020 |
| 22949 | Petroleum Resources Co | Wichita, KS 67206 | Oil & Gas Operator | May 2000 |
| 22950 | Petroleum Resources MGMT Corp. | | Oil & Gas Operator | Mar 2002 |
| 22951 | Petroleum Resources, LLC | | Oil & Gas Operator | Dec 2021 |
| 22952 | Petroleum Service Partners, Inc. | Indiana, PA 15701-0000 | Oil & Gas Operator | Dec 2021 |
| 22953 | Petroleum Technical Services Co. | Midland, TX 79707 | Oil & Gas Operator | Dec 2004 |
| 22954 | Petroleum Techno | | Oil & Gas Operator | Dec 1996 |
| 22955 | Petroleum Technologies, Inc. | Kansas City, MO 64112 | Oil & Gas Operator | Dec 2024 |
| 22956 | Petroleum Venture Capitol Corp | | Oil Operator | Jun 1980 |
| 22957 | Petrolia Drilling Corporation | | Oil & Gas Operator | Jul 2003 |
| 22958 | Petrolia Energy Corporation | Pearland, TX 77581 | Oil Operator | Jan 2024 |
| 22959 | Petrolia Group, L.L.C. | Katy, TX 77449 | Oil & Gas Operator | Apr 2025 |
| 22960 | Petromac, Inc. | Onalaska, TX 77360 | Oil & Gas Operator | Apr 2025 |
| 22961 | Petromark Energy LLC | Oklahoma City, OK 73116-7634 | Oil & Gas Operator | Jun 2000 |
| 22962 | Petromark Exploration Company | | Oil & Gas Operator | Nov 2001 |
| 22963 | Petromark Resources Company | Tulsa, OK 74136 | Oil & Gas Operator | Sep 1993 |
| 22964 | Petromax Oil And Gas Inc | | Oil & Gas Operator | Dec 1988 |
| 22965 | Petromerica Operating LLC | Oklahoma City, OK 73102-4613 | Oil Operator | Jan 2025 |
| 22966 | Petrominerals Corp. | | Oil & Gas Operator | Dec 2003 |
| 22967 | Petromining, Inc. | Plano, TX 75026 | Oil & Gas Operator | Apr 2025 |
| 22968 | Petron Development Company | | Oil & Gas Operator | Oct 2020 |
| 22969 | Petron Energy Inc | Dallas, TX 75252 | Oil & Gas Operator | Apr 2025 |
| 22970 | Petron Oil & Gas | Lenexa, KS 66215 | Oil & Gas Operator | Dec 2024 |
| 22971 | Petron Oil Company | Missouri City, TX 77489 | Oil & Gas Operator | Apr 2025 |
| 22972 | Petroneal Corporation | San Angelo, TX 76902 | Oil & Gas Operator | Nov 1995 |
| 22973 | Petronomics Petroleum, Inc. | Austin, TX 78734 | Oil & Gas Operator | Jan 1995 |
| 22974 | Petronomics, Inc. | Houston, TX 77074 | Oil & Gas Operator | Aug 2003 |
| 22975 | Petronova, LLC | | Gas Operator | Jul 2014 |
| 22976 | Petroplex Energy Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 22977 | Petroplex Equipment, Inc. | Midland, TX 79701 | Oil & Gas Operator | May 2019 |
| 22978 | Petropoint Energy Operating, LLC | Houston, TX 77098 | Oil & Gas Operator | Apr 2025 |
| 22979 | Petroprize | | Oil & Gas Operator | Dec 2024 |
| 22980 | Petropro Energy Partners, L.P. | Houston, TX 77024 | Oil & Gas Operator | Jan 2013 |
| 22981 | Petropro Petroleum LLC | | Oil Operator | Dec 2024 |
| 22982 | Petroquest Energy, Inc. | Lafayette, LA 70505 | Oil & Gas Operator | Feb 2001 |
| 22983 | Petroquest Energy, L.L.C. | Lafayette, LA 70505 | Oil & Gas Operator | Apr 2025 |
| 22984 | Petroquest Exploration, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Mar 2008 |
| 22985 | Petroquest Oil & Gas LLC | Wewoka, OK 74884 | Oil & Gas Operator | Jan 2025 |
| 22986 | Petroquest, LLC | El Dorado, AR 71730 | Oil & Gas Operator | Jan 2025 |
| 22987 | Petroreal Inc. | Temple, TX 76503 | Oil & Gas Operator | Apr 2025 |
| 22988 | Petrorep Inc | | Oil Operator | Oct 1998 |
| 22989 | Petrosantander (USA) Inc. | Houston, TX 77057 | Oil & Gas Operator | Dec 2024 |
| 22990 | Petrosaurus, Inc. | Somerset, TX 78069 | Oil Operator | Apr 2025 |
| 22991 | Petrosearch Operating Co, LLC | Denver, CO 80202 | Oil & Gas Operator | Apr 2025 |
| 22992 | Petrosearch, Inc. | | Oil Operator | Jul 1992 |
| 22993 | Petroshale (Us) Inc. | | Oil & Gas Operator | Feb 2025 |
| 22994 | Petroshare Corporation | | Oil & Gas Operator | Jan 2024 |
| 22995 | Petrosil Resources Inc. | | Oil & Gas Operator | Oct 1981 |
| 22996 | Petrosource Energy Corporation | Fort Worth, TX 76112 | Oil & Gas Operator | Apr 2025 |
| 22997 | Petrosource Production Co. L.P. | Midland, TX 79701 | Oil & Gas Operator | Nov 2007 |
| 22998 | Petrosource Production Co., LLC | Midland, TX 79705 | Oil & Gas Operator | Apr 2025 |
| 22999 | Petrotech Resources Corp | Glasgow, KY 42141 | Oil & Gas Operator | Dec 2022 |
| 23000 | Petrotex Engineering Company | Cypress, TX 77429 | Oil & Gas Operator | Apr 2025 |