| 3301 | Owen, Matthew | Hamilton, KS 66853 | Oil Operator | Sep 2016 |
| 3302 | Owens Oil | | Oil Operator | Dec 2000 |
| 3303 | Owens Oil Company | Iowa Park, TX 76367 | Oil & Gas Operator | Sep 2008 |
| 3304 | Owens Oil Company, LLC | Yates Center, KS 66783 | Oil Operator | Sep 2025 |
| 3305 | Owens Petroleum | | Oil Operator | May 2006 |
| 3306 | Owens Petroleum LLC | Yates Center, KS 66783 | Oil & Gas Operator | Sep 2025 |
| 3307 | Owi Operating Co. LC | Ottawa, KS 66067 | Oil & Gas Operator | Dec 2009 |
| 3308 | Own Resources Operating LLC | The Woodlands, TX 77381 | Oil & Gas Operator | Dec 2025 |
| 3309 | Oxbow Oil Company,A Kansas General Partnership | Grenola, KS 67346 | Oil Operator | Apr 2015 |
| 3310 | Oxford Explorati | | Oil & Gas Operator | Mar 1993 |
| 3311 | Oxford Exploration | | Oil Operator | Apr 1988 |
| 3312 | Oxy USA | | Oil Operator | Apr 1992 |
| 3313 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Feb 2026 |
| 3314 | Ozark Enterprise | | Oil Operator | Nov 1990 |
| 3315 | P & C Petroleum, LLC | Shawnee, KS 66226 | Oil Operator | Aug 2025 |
| 3316 | P & M Energy, A General Partnership | Johnson, KS 67855 | Gas Operator | Sep 2003 |
| 3317 | P & M Oil Company | Hays, KS 67601 | Oil & Gas Operator | Nov 2025 |
| 3318 | P & M Petroleum | | Oil Operator | Mar 1998 |
| 3319 | P & M Petroleum Management LLC | Denver, CO 80202 | Oil & Gas Operator | Oct 2021 |
| 3320 | P & W Oil | Lakewood, CO 80215 | Oil Operator | Sep 1985 |
| 3321 | P J Oil Co. | | Oil Operator | Sep 2025 |
| 3322 | P.O.&G. Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Feb 2026 |
| 3323 | P3 Production | | Oil Operator | Sep 2025 |
| 3324 | Pacific Enterprises Oil Co USA | Dallas, TX 75201 | Oil & Gas Operator | Feb 2001 |
| 3325 | Packard Energy LLC | Medicine Lodge, KS 67104 | Oil & Gas Operator | Sep 2025 |
| 3326 | Packard Gas Company | Irving, TX 75063 | Oil & Gas Operator | Nov 2006 |
| 3327 | Packard, Lynn | Medicine Lodge, KS | Oil & Gas Operator | Sep 2025 |
| 3328 | Pada Petroleum, Inc. | Maple City, KS 67102 | Oil & Gas Operator | Sep 2025 |
| 3329 | Padgett Oil Inc. | Sedan, KS 67361 | Oil Operator | May 2006 |
| 3330 | Painter Oil Comp | | Oil & Gas Operator | Jul 1993 |
| 3331 | Palmer Engineering, Inc. | Luray, KS 67649 | Gas Operator | Mar 2000 |
| 3332 | Palmer Oil, Inc. | Garden City, KS 67846 | Oil & Gas Operator | Sep 2025 |
| 3333 | Palomino Petrole | | Oil & Gas Operator | Dec 1995 |
| 3334 | Palomino Petroleum | Newton, KS 67114 | Oil Operator | Oct 2003 |
| 3335 | Palomino Petroleum Inc | Newton, KS 67114 | Oil & Gas Operator | Sep 2025 |
| 3336 | Pan Western Energy Corporation | Tulsa, OK 74114 | Oil & Gas Operator | Feb 2026 |
| 3337 | Panaco, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Aug 2025 |
| 3338 | Panada Exploration, Inc. | Tulsa, OK 74135 | Oil & Gas Operator | Jun 1996 |
| 3339 | Pancanadian Petr | | Oil Operator | Aug 1990 |
| 3340 | Panda Resources | | Gas Operator | Aug 1989 |
| 3341 | Panhandle Easter | | Gas Operator | Dec 1986 |
| 3342 | Panhandle Petrol | | Oil Operator | Jun 1987 |
| 3343 | Pantera Energy Company | Amarillo, TX 79101 | Oil & Gas Operator | Feb 2026 |
| 3344 | Par Petroleum In | | Oil & Gas Operator | Jun 1993 |
| 3345 | Par Petroleum, Inc. | Liberal, KS 67901 | Gas Operator | Dec 2009 |
| 3346 | Par, Inc. | Oklahoma City, OK 73111 | Oil Operator | May 2016 |
| 3347 | Paradigm Energy LLC | Lenexa, KS 66227 | Oil & Gas Operator | Dec 2024 |
| 3348 | Paradise Creek Oil & Gas | Plainville, KS 67663 | Oil Operator | Jun 2025 |
| 3349 | Paramount Enterprises Inc | Hays, KS 67601 | Oil Operator | Aug 2000 |
| 3350 | Pardee Production Co. | Skiatook, OK 74070 | Oil & Gas Operator | Mar 2021 |
| 3351 | Parka Exploratio | | Oil & Gas Operator | Jun 1990 |
| 3352 | Parker & Parsley | | Oil & Gas Operator | Dec 1996 |
| 3353 | Parker & Parsley Development L.P | Midland, TX 79702 | Oil & Gas Operator | Oct 2007 |
| 3354 | Parker Trucking And Assoc. | Independence, MO 64052 | Oil Operator | Aug 1996 |
| 3355 | Parrish Corporat | | Oil & Gas Operator | Oct 1994 |
| 3356 | Parrish Corporation | Wichita, KS 67202 | Oil & Gas Operator | Jan 2025 |
| 3357 | Parten, Kenneth N. | St John, KS 67576 | Oil & Gas Operator | May 2009 |
| 3358 | Partners In Crude, Inc. | Ponca City, OK 74602 | Oil & Gas Operator | Dec 1997 |
| 3359 | Partners Petrole | | Oil Operator | Oct 1992 |
| 3360 | Parwest Land Exploration Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | Nov 2025 |
| 3361 | Pate-Dombaugh Pe | | Oil Operator | Sep 1991 |
| 3362 | Patina Oil & Gas Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2016 |
| 3363 | Patrick Development Corporation | Leawood, KS 66206 | Oil Operator | Sep 2025 |
| 3364 | Patrick R J Oper | | Oil & Gas Operator | Jan 1995 |
| 3365 | Patriot Oil Company, LLC | | Oil Operator | Aug 2025 |
| 3366 | Patterson Energy LLC | Hays, KS 67601 | Oil & Gas Operator | Sep 2025 |
| 3367 | Patterson Jerry | | Oil Operator | Jan 1995 |
| 3368 | Patterson Operations LLC | Wichita, KS 67228 | Oil Operator | Sep 2025 |
| 3369 | Patterson Production Co. | Phillipsburg, KS 67661 | Oil Operator | Jul 1998 |
| 3370 | Patteson Brother | | Oil Operator | Feb 1990 |
| 3371 | Patteson Oil | | Oil Operator | Dec 2009 |
| 3372 | Patteson Oil, A General Partnership | Moline, KS 67353 | Oil Operator | Nov 2019 |
| 3373 | Patteson, Thomas Wade | Moline, KS 67353 | Oil Operator | Sep 2025 |
| 3374 | Patteson-Sheel O | | Oil Operator | Oct 1990 |
| 3375 | Pattie Creek Oil | | Oil Operator | May 1995 |
| 3376 | Pattie Creek Oil Company | Madison, KS 66860 | Oil Operator | Feb 2000 |
| 3377 | Patton Oil Compa | | Oil & Gas Operator | Nov 1994 |
| 3378 | Patton Oil Company | Midland, TX 79702 | Oil & Gas Operator | Jun 2007 |
| 3379 | Patty Creek Oil LLC | Emporia, KS 66801 | Oil Operator | Sep 2025 |
| 3380 | Paul Bowman Oil | | Oil Operator | Jul 2000 |
| 3381 | Paul Bowman Oil Trust | Codell, KS 67663 | Oil Operator | Sep 2025 |
| 3382 | Pauley Oil | | Oil Operator | Sep 2025 |
| 3383 | Paulsen Petroleu | | Oil Operator | Feb 1994 |
| 3384 | Pawataca Production Co | | Gas Operator | Jun 2011 |
| 3385 | Pawnee Oil, LLC | Overland Park, KS 66221 | Oil Operator | Aug 2025 |
| 3386 | Paxco, Inc. | Hays, KS 67601 | Oil & Gas Operator | Sep 2025 |
| 3387 | PB Oil Company | Vernon, TX 76385 | Oil & Gas Operator | Oct 2023 |
| 3388 | PDC Energy Inc | Denver, CO 80203 | Oil & Gas Operator | Nov 2025 |
| 3389 | Peak Energy LLC | Coffeyville, KS 67337 | Oil & Gas Operator | Sep 2025 |
| 3390 | Peak Oil Company LLC | Branson West, MO 65737 | Oil Operator | Dec 2009 |
| 3391 | Peak Operating LLC | Oklahoma City, OK 73157 | Oil & Gas Operator | Sep 2025 |
| 3392 | Pearce MGMNT Con | | Gas Operator | Mar 1992 |
| 3393 | Peewe Oil Co. | | Oil Operator | Sep 2025 |
| 3394 | Pelican Hill Oil & Gas, Inc. | Carlsbad, CA 92010 | Oil & Gas Operator | May 2013 |
| 3395 | Pelican Resource | | Oil Operator | Jan 1991 |
| 3396 | Pendleton Land & | | Oil Operator | Aug 1985 |
| 3397 | Pendulum Petrole | | Oil & Gas Operator | Dec 1995 |
| 3398 | Pendulum Petroleum, Inc. | Pinedale, WY 82941 | Oil Operator | Aug 1999 |
| 3399 | Penn, G. R. Production Co. | McPherson, KS 67460 | Gas Operator | Nov 1997 |
| 3400 | Pennine Resc Inc | | Oil Operator | Sep 1992 |