| 1 | P & A Oilfield Services, Inc. | | Oil & Gas Operator | Jan 1998 |
| 2 | P & A Operating, Inc. | Kerrville, TX 78028 | Oil & Gas Operator | Sep 2025 |
| 3 | P & A Well Service | | Oil & Gas Operator | Jan 1994 |
| 4 | P & C Energy Co | Allegany, NY 14706-9615 | Oil Operator | Dec 2015 |
| 5 | P & C Oil & Gas, Inc. | Linn, WV 26384 | Oil & Gas Operator | Dec 2021 |
| 6 | P & C Oil Company | Leona, TX 75850 | Oil & Gas Operator | Jul 2025 |
| 7 | P & C Petroleum, LLC | Shawnee, KS 66226 | Oil Operator | Apr 2025 |
| 8 | P & D Valentine Oil Co | New Matamoras, OH 45767 | Oil & Gas Operator | Dec 2018 |
| 9 | P & E Oil | | Oil & Gas Operator | Dec 2024 |
| 10 | P & H Construction Inc | Wewoka, OK 74884 | Oil & Gas Operator | Jun 2024 |
| 11 | P & H Oil & Gas Inc | Stroud, OK 74079 | Oil & Gas Operator | Jun 2025 |
| 12 | P & H Vacuum Service | | Oil & Gas Operator | Dec 2024 |
| 13 | P & J Resources, Inc | | Oil & Gas Operator | Dec 2013 |
| 14 | P & M Construction | Graham, TX 76450 | Oil & Gas Operator | Sep 2025 |
| 15 | P & M Drilling Company Inc | Depew, OK 74028 | Oil & Gas Operator | Dec 2004 |
| 16 | P & M Energy, A General Partnership | Johnson, KS 67855 | Gas Operator | Sep 2003 |
| 17 | P & M Oil Company | Hays, KS 67601 | Oil & Gas Operator | Jun 2025 |
| 18 | P & M Petroleum Management | Denver, CO BAD ADDR | Oil & Gas Operator | Apr 2010 |
| 19 | P & M Petroleum Management, LLC | Denver, CO 80202 | Oil & Gas Operator | Oct 2021 |
| 20 | P & P Petroleum | Midland, TX 79706 | Oil & Gas Operator | Oct 2002 |
| 21 | P & P Producing Inc | Midland, TX 79702 | Oil & Gas Operator | Feb 2015 |
| 22 | P & R Oil Company | Post, TX 79356 | Oil & Gas Operator | Sep 2025 |
| 23 | P & S Energy Inc | Mineral Ridge, OH 44440 | Oil & Gas Operator | Dec 2019 |
| 24 | P & S Oil And Gas Corporation | | Gas Operator | Dec 1996 |
| 25 | P & S Production LLC | Ravenna, OH 44266 | Oil & Gas Operator | Dec 2013 |
| 26 | P & W Oil | Lakewood, CO 80215 | Oil Operator | Sep 1985 |
| 27 | P & W Well Service Inc. | Abilene, TX 79604 | Oil & Gas Operator | Sep 2025 |
| 28 | P & WG Resources L.L.C. | Batson, TX 77519 | Oil & Gas Operator | Jan 2011 |
| 29 | P A Energy Inc | Calvin, OK 74531-0248 | Oil & Gas Operator | Apr 2020 |
| 30 | P D Parker | | Oil & Gas Operator | Aug 1985 |
| 31 | P F Beeler LLC | Norman, OK 73072-7522 | Oil & Gas Operator | Jun 2025 |
| 32 | P I C Inc | Ponca City, OK 74602 | Oil & Gas Operator | Jan 2013 |
| 33 | P J Oil Co. | | Oil Operator | Apr 2025 |
| 34 | P K & L Oil Properties | Shawnee, OK 74802-0931 | Oil & Gas Operator | Mar 2001 |
| 35 | P O & G Panhandle LP | Houston, TX 77057 | Oil & Gas Operator | May 2025 |
| 36 | P P & G Oil | Pickerington, OH 43147 | Oil & Gas Operator | Dec 2023 |
| 37 | P T C, Inc | Raccoon, KY 41557 | Gas Operator | Dec 2023 |
| 38 | P T Oil Co Inc | Walters, OK 73572-9505 | Oil Operator | Nov 2014 |
| 39 | P&F Operations, LLC | Thrall, TX 76578 | Oil Operator | Sep 2025 |
| 40 | P&H Gas, LLC | Fredonia, NY 14063 | Gas Operator | Dec 2024 |
| 41 | P&P Industries, Inc. | Austin, TX 78737 | Oil & Gas Operator | Dec 2002 |
| 42 | P,B&B Operating Inc. | Coleman, TX 76834 | Oil & Gas Operator | Sep 2025 |
| 43 | P-2 Exploration Co. | Amarillo, TX 79124 | Oil & Gas Operator | Feb 2005 |
| 44 | P-2 Exploraton Co Inc | Pampa, TX 79065-2920 | Oil & Gas Operator | Jun 1996 |
| 45 | P-2 Oil | Vernal, UT 84078 | Oil & Gas Operator | Jul 2000 |
| 46 | P-K Oil Co. | Olney, TX 76374 | Oil & Gas Operator | Aug 2003 |
| 47 | P-R-O Management, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Sep 2025 |
| 48 | P-Tex Petroleum, Inc. | Dallas, TX 75238 | Oil & Gas Operator | Nov 1999 |
| 49 | P. B. Operating Company | | Oil & Gas Operator | Feb 1978 |
| 50 | P. D. L. Services, Inc. | Minerva, OH 44657 | Oil & Gas Operator | Dec 2024 |
| 51 | P. G. Oil & Gas, LLC | Clarksburg, WV 26302-2512 | Oil & Gas Operator | Dec 2021 |
| 52 | P. K. Smith | | Oil Operator | Mar 1997 |
| 53 | P. L. O. | Boerne, TX 78006 | Oil & Gas Operator | Jun 2016 |
| 54 | P. R. L. Oil Company | Albany, TX 76430 | Oil & Gas Operator | Apr 2008 |
| 55 | P. S. & G., Incorporated | | Gas Operator | Aug 1983 |
| 56 | P.B. Blue Dot Properties | Wexford, PA 15090 | Oil & Gas Operator | Sep 2025 |
| 57 | P.C.S.I. | | Oil & Gas Operator | Jun 1987 |
| 58 | P.D.T. Drilling Limited Partnership | St. Albans, WV 25177 | Gas Operator | Dec 2021 |
| 59 | P.I.D. Drilling Inc | Clyde, TX 79510 | Oil & Gas Operator | Sep 2025 |
| 60 | P.M. Petroleum | | Oil Operator | Mar 1998 |
| 61 | P.O.&G. Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Sep 2025 |
| 62 | P.O.S. Energy, Inc. | Buna, TX 77612 | Oil & Gas Operator | Sep 2025 |
| 63 | P.R.P., Inc. | | Oil & Gas Operator | Jun 2025 |
| 64 | P.S.N. Petroleum, Inc. | San Antonio, TX 78233 | Oil & Gas Operator | Sep 2025 |
| 65 | P.T.L. Operating Co. | | Oil Operator | Jun 2003 |
| 66 | P1 Energy, LLC | Judson, TX 75660 | Oil & Gas Operator | Sep 2025 |
| 67 | P3 Production | | Oil Operator | Apr 2025 |
| 68 | P4 Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Sep 2025 |
| 69 | Pa DCNR State Parks Bur | Harrisburg, PA 17105-8551 | Gas Operator | Dec 2024 |
| 70 | Pa Dep Ofc Oil & Gas MGMT | Harrisburg, PA 17105-8765 | Gas Operator | Dec 1990 |
| 71 | Pa Gen Energy Co LLC | Warren, PA 16365-2510 | Oil & Gas Operator | Jun 2025 |
| 72 | Pa Gen Energy Corp | Warren, PA 16365-2510 | Oil & Gas Operator | Dec 2002 |
| 73 | Pa Land Holdings Corp | Waynesburg, PA 15370-3020 | Oil & Gas Operator | Dec 2011 |
| 74 | Pa Land Holdings LLC | Waynesburg, PA 15370-3020 | Gas Operator | Dec 2017 |
| 75 | Pa Mineral SVCS LLC | Indiana, PA 15701 | Oil & Gas Operator | Dec 2024 |
| 76 | Pa Prod SVC Inc | Indiana, PA 15701-0421 | Oil & Gas Operator | Dec 2024 |
| 77 | Pa Prospect LLC | Columbus, MT 59019 | Oil & Gas Operator | Jul 2020 |
| 78 | Pa State Sys Of Higher Ed Indiana Univ | Indiana, PA 15705-0001 | Gas Operator | Dec 2012 |
| 79 | Pablo Energy II, LLC | Amarillo, TX 79105 | Oil & Gas Operator | May 2025 |
| 80 | Pablo Energy, Inc. | Pampa, TX 79065 | Oil & Gas Operator | Dec 2005 |
| 81 | Pac Drilling LLC | Bolivar, OH 44612 | Oil & Gas Operator | Dec 2024 |
| 82 | Pace And Ray Oil Co. | Electra, TX 76360 | Oil & Gas Operator | Sep 2025 |
| 83 | Pace Co/Chas E Hall | Marietta, OH 45750 | Oil & Gas Operator | Dec 1990 |
| 84 | Pace Diversified Corporation | | Oil & Gas Operator | Jul 2025 |
| 85 | Pace Exploration LLC | Tulsa, OK 74133 | Oil & Gas Operator | May 2025 |
| 86 | Pace Oil And Gas Company | Austin, TX 78715 | Oil & Gas Operator | Sep 2025 |
| 87 | Pace Operating | Abilene, TX 79608 | Oil & Gas Operator | Sep 2025 |
| 88 | Pace Petroleum Company | Dallas, TX 75206 | Oil & Gas Operator | Sep 2025 |
| 89 | Pace Production Co. | San Angelo, TX 76902 | Oil & Gas Operator | Sep 2025 |
| 90 | Pace Royalty Trust Fund, Inc. | Shreveport, LA 71135 | Oil & Gas Operator | Nov 2001 |
| 91 | Pace West Production LC | San Angelo, TX 76904 | Oil & Gas Operator | Sep 1995 |
| 92 | Pacer Resources, Inc. | Calgary, AB T3H 3J9 | Gas Operator | Dec 2001 |
| 93 | Pacesetter Energy, Inc. | Flower Mound, TX 75028 | Oil & Gas Operator | May 2008 |
| 94 | Pacesetter Energy, LLC | Flower Mound, TX 75028 | Oil & Gas Operator | Jul 2020 |
| 95 | Pacific Alliance Medical Center | | Oil Operator | Dec 2007 |
| 96 | Pacific Atlantic Oil Co. | | Oil & Gas Operator | Dec 2003 |
| 97 | Pacific Atlantic Resources, Inc. | | Oil & Gas Operator | Dec 2021 |
| 98 | Pacific Coast Energy Company LP | | Oil & Gas Operator | Jul 2025 |
| 99 | Pacific Energy & Mining Company | Reno, NV 89511 | Oil & Gas Operator | Aug 2020 |
| 100 | Pacific Energy Resources Inc. | | Oil Operator | Jun 2025 |