| 1 | P & C Petroleum, LLC | Shawnee, KS 66226 | Oil Operator | Aug 2025 |
| 2 | P & M Energy, A General Partnership | Johnson, KS 67855 | Gas Operator | Sep 2003 |
| 3 | P & M Oil Company | Hays, KS 67601 | Oil & Gas Operator | Nov 2025 |
| 4 | P & M Petroleum | | Oil Operator | Mar 1998 |
| 5 | P & M Petroleum Management LLC | Denver, CO 80202 | Oil & Gas Operator | Oct 2021 |
| 6 | P & W Oil | Lakewood, CO 80215 | Oil Operator | Sep 1985 |
| 7 | P J Oil Co. | | Oil Operator | Sep 2025 |
| 8 | P.O.&G. Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Feb 2026 |
| 9 | P3 Production | | Oil Operator | Sep 2025 |
| 10 | Pacific Enterprises Oil Co USA | Dallas, TX 75201 | Oil & Gas Operator | Feb 2001 |
| 11 | Packard Energy LLC | Medicine Lodge, KS 67104 | Oil & Gas Operator | Sep 2025 |
| 12 | Packard Gas Company | Irving, TX 75063 | Oil & Gas Operator | Nov 2006 |
| 13 | Packard, Lynn | Medicine Lodge, KS | Oil & Gas Operator | Sep 2025 |
| 14 | Pada Petroleum, Inc. | Maple City, KS 67102 | Oil & Gas Operator | Sep 2025 |
| 15 | Padgett Oil Inc. | Sedan, KS 67361 | Oil Operator | May 2006 |
| 16 | Painter Oil Comp | | Oil & Gas Operator | Jul 1993 |
| 17 | Palmer Engineering, Inc. | Luray, KS 67649 | Gas Operator | Mar 2000 |
| 18 | Palmer Oil, Inc. | Garden City, KS 67846 | Oil & Gas Operator | Sep 2025 |
| 19 | Palomino Petrole | | Oil & Gas Operator | Dec 1995 |
| 20 | Palomino Petroleum | Newton, KS 67114 | Oil Operator | Oct 2003 |
| 21 | Palomino Petroleum Inc | Newton, KS 67114 | Oil & Gas Operator | Sep 2025 |
| 22 | Pan Western Energy Corporation | Tulsa, OK 74114 | Oil & Gas Operator | Feb 2026 |
| 23 | Panaco, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Aug 2025 |
| 24 | Panada Exploration, Inc. | Tulsa, OK 74135 | Oil & Gas Operator | Jun 1996 |
| 25 | Pancanadian Petr | | Oil Operator | Aug 1990 |
| 26 | Panda Resources | | Gas Operator | Aug 1989 |
| 27 | Panhandle Easter | | Gas Operator | Dec 1986 |
| 28 | Panhandle Petrol | | Oil Operator | Jun 1987 |
| 29 | Pantera Energy Company | Amarillo, TX 79101 | Oil & Gas Operator | Feb 2026 |
| 30 | Par Petroleum In | | Oil & Gas Operator | Jun 1993 |
| 31 | Par Petroleum, Inc. | Liberal, KS 67901 | Gas Operator | Dec 2009 |
| 32 | Par, Inc. | Oklahoma City, OK 73111 | Oil Operator | May 2016 |
| 33 | Paradigm Energy LLC | Lenexa, KS 66227 | Oil & Gas Operator | Dec 2024 |
| 34 | Paradise Creek Oil & Gas | Plainville, KS 67663 | Oil Operator | Jun 2025 |
| 35 | Paramount Enterprises Inc | Hays, KS 67601 | Oil Operator | Aug 2000 |
| 36 | Pardee Production Co. | Skiatook, OK 74070 | Oil & Gas Operator | Mar 2021 |
| 37 | Parka Exploratio | | Oil & Gas Operator | Jun 1990 |
| 38 | Parker & Parsley | | Oil & Gas Operator | Dec 1996 |
| 39 | Parker & Parsley Development L.P | Midland, TX 79702 | Oil & Gas Operator | Oct 2007 |
| 40 | Parker Trucking And Assoc. | Independence, MO 64052 | Oil Operator | Aug 1996 |
| 41 | Parrish Corporat | | Oil & Gas Operator | Oct 1994 |
| 42 | Parrish Corporation | Wichita, KS 67202 | Oil & Gas Operator | Jan 2025 |
| 43 | Parten, Kenneth N. | St John, KS 67576 | Oil & Gas Operator | May 2009 |
| 44 | Partners In Crude, Inc. | Ponca City, OK 74602 | Oil & Gas Operator | Dec 1997 |
| 45 | Partners Petrole | | Oil Operator | Oct 1992 |
| 46 | Parwest Land Exploration Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | Nov 2025 |
| 47 | Pate-Dombaugh Pe | | Oil Operator | Sep 1991 |
| 48 | Patina Oil & Gas Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2016 |
| 49 | Patrick Development Corporation | Leawood, KS 66206 | Oil Operator | Sep 2025 |
| 50 | Patrick R J Oper | | Oil & Gas Operator | Jan 1995 |
| 51 | Patriot Oil Company, LLC | | Oil Operator | Aug 2025 |
| 52 | Patterson Energy LLC | Hays, KS 67601 | Oil & Gas Operator | Sep 2025 |
| 53 | Patterson Jerry | | Oil Operator | Jan 1995 |
| 54 | Patterson Operations LLC | Wichita, KS 67228 | Oil Operator | Sep 2025 |
| 55 | Patterson Production Co. | Phillipsburg, KS 67661 | Oil Operator | Jul 1998 |
| 56 | Patteson Brother | | Oil Operator | Feb 1990 |
| 57 | Patteson Oil | | Oil Operator | Dec 2009 |
| 58 | Patteson Oil, A General Partnership | Moline, KS 67353 | Oil Operator | Nov 2019 |
| 59 | Patteson, Thomas Wade | Moline, KS 67353 | Oil Operator | Sep 2025 |
| 60 | Patteson-Sheel O | | Oil Operator | Oct 1990 |
| 61 | Pattie Creek Oil | | Oil Operator | May 1995 |
| 62 | Pattie Creek Oil Company | Madison, KS 66860 | Oil Operator | Feb 2000 |
| 63 | Patton Oil Compa | | Oil & Gas Operator | Nov 1994 |
| 64 | Patton Oil Company | Midland, TX 79702 | Oil & Gas Operator | Jun 2007 |
| 65 | Patty Creek Oil LLC | Emporia, KS 66801 | Oil Operator | Sep 2025 |
| 66 | Paul Bowman Oil | | Oil Operator | Jul 2000 |
| 67 | Paul Bowman Oil Trust | Codell, KS 67663 | Oil Operator | Sep 2025 |
| 68 | Pauley Oil | | Oil Operator | Sep 2025 |
| 69 | Paulsen Petroleu | | Oil Operator | Feb 1994 |
| 70 | Pawataca Production Co | | Gas Operator | Jun 2011 |
| 71 | Pawnee Oil, LLC | Overland Park, KS 66221 | Oil Operator | Aug 2025 |
| 72 | Paxco, Inc. | Hays, KS 67601 | Oil & Gas Operator | Sep 2025 |
| 73 | PB Oil Company | Vernon, TX 76385 | Oil & Gas Operator | Oct 2023 |
| 74 | PDC Energy Inc | Denver, CO 80203 | Oil & Gas Operator | Nov 2025 |
| 75 | Peak Energy LLC | Coffeyville, KS 67337 | Oil & Gas Operator | Sep 2025 |
| 76 | Peak Oil Company LLC | Branson West, MO 65737 | Oil Operator | Dec 2009 |
| 77 | Peak Operating LLC | Oklahoma City, OK 73157 | Oil & Gas Operator | Sep 2025 |
| 78 | Pearce MGMNT Con | | Gas Operator | Mar 1992 |
| 79 | Peewe Oil Co. | | Oil Operator | Sep 2025 |
| 80 | Pelican Hill Oil & Gas, Inc. | Carlsbad, CA 92010 | Oil & Gas Operator | May 2013 |
| 81 | Pelican Resource | | Oil Operator | Jan 1991 |
| 82 | Pendleton Land & | | Oil Operator | Aug 1985 |
| 83 | Pendulum Petrole | | Oil & Gas Operator | Dec 1995 |
| 84 | Pendulum Petroleum, Inc. | Pinedale, WY 82941 | Oil Operator | Aug 1999 |
| 85 | Penn, G. R. Production Co. | McPherson, KS 67460 | Gas Operator | Nov 1997 |
| 86 | Pennine Resc Inc | | Oil Operator | Sep 1992 |
| 87 | Pennmark Resources Company | Edmond, OK 73013 | Oil & Gas Operator | Nov 2025 |
| 88 | Pennzenergy Exploration And Production LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Dec 2009 |
| 89 | Peoples Oil, LLC | Ottawa, KS 66067 | Oil Operator | Sep 2025 |
| 90 | Perera Ray & Den | | Oil Operator | Sep 1994 |
| 91 | Perkins Oil Comp | | Oil Operator | Nov 1988 |
| 92 | Perkins Oil Ente | | Oil & Gas Operator | Dec 1995 |
| 93 | Perkins Oil Enterprises, Inc. | Howard, KS 67349 | Oil & Gas Operator | Sep 2025 |
| 94 | Perkins, A. E. | Augusta, KS 67010 | Gas Operator | Aug 1989 |
| 95 | Permian Reef, LLC | Greenwood, IN 46143 | Gas Operator | Mar 2011 |
| 96 | Perrin Oil Compa | | Oil & Gas Operator | Jun 1985 |
| 97 | Perry Petroleum | | Oil Operator | Jun 1993 |
| 98 | Pet-Ex Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Sep 2025 |
| 99 | Petco Energy Ser | | Oil Operator | Apr 1986 |
| 100 | Peterland Oil Co | | Oil Operator | Sep 1990 |