| 7201 | Mid-Tex Resources | Merkel, TX 79536 | Oil & Gas Operator | Feb 2001 |
| 7202 | Midas Resources, Inc. | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Dec 2025 |
| 7203 | Midcoast G & P (East Texas) L.P. | Houston, TX 77002 | Oil & Gas Operator | Dec 2025 |
| 7204 | Midcon Offshore, Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2008 |
| 7205 | Middle Bay Oil Company, Inc. | Houston, TX 77002 | Oil & Gas Operator | Apr 1998 |
| 7206 | Middle Bay Production Co. Inc. | Houston, TX 77010 | Oil & Gas Operator | Sep 2014 |
| 7207 | Middleton Oil Company | Houston, TX 77006 | Oil & Gas Operator | Dec 2025 |
| 7208 | Mideast Gas Systems, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2005 |
| 7209 | Midenergy Operating, LLC | Houston, TX 77024 | Oil & Gas Operator | Dec 2025 |
| 7210 | Midgard Energy Company | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2014 |
| 7211 | Midkiff, John | Midland, TX 79705 | Oil & Gas Operator | Mar 2008 |
| 7212 | Midland Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 7213 | Midland Oil And Gas, Inc. | Midland, TX 79705 | Oil & Gas Operator | Dec 2025 |
| 7214 | Midland Operating, Inc. | Midland, TX 79710 | Oil & Gas Operator | Sep 2025 |
| 7215 | Midland Res. Oper. Co., Inc. | Midland, TX 79701 | Oil & Gas Operator | Oct 1998 |
| 7216 | Midland Southwest Cold Lake Inc | Midland, TX 79702 | Oil & Gas Operator | Jun 1997 |
| 7217 | Midland TMG Inc. | Midland, TX 79705 | Oil & Gas Operator | Apr 2017 |
| 7218 | Midnite Oil Co. | Wichita Falls, TX 76310 | Oil & Gas Operator | Dec 2025 |
| 7219 | Midpar L.P. | Midland, TX 79702 | Oil & Gas Operator | Feb 1995 |
| 7220 | Midsco | Cross Plains, TX 76443 | Oil & Gas Operator | Dec 2025 |
| 7221 | Midstates Corporation | San Antonio, TX 78217 | Oil & Gas Operator | Dec 2025 |
| 7222 | Midstates Petroleum Company LLC | Tulsa, OK 74103 | Oil & Gas Operator | May 2018 |
| 7223 | Midville Energy, LLC. | Midland, TX 79705 | Oil & Gas Operator | Jul 2024 |
| 7224 | Midway Drilling Co. | Richmond, TX 77469 | Oil & Gas Operator | Dec 2025 |
| 7225 | Midway Energy Partners Operating LLC | Midland, TX 79701 | Oil Operator | Dec 2025 |
| 7226 | Midway Operating Company, L.L.C. | Woodward, OK 73802 | Oil & Gas Operator | Dec 2025 |
| 7227 | Midwestern Energy | Mankato, MN 56003 | Oil & Gas Operator | Dec 2025 |
| 7228 | Midwestern Exploration Company | Edmond, OK 73013 | Oil & Gas Operator | May 2025 |
| 7229 | Miesch Exploration Corporation | Dallas, TX 75229 | Oil & Gas Operator | Nov 2002 |
| 7230 | Mike Oil LLC | Colorado City, TX 79512 | Oil Operator | Dec 2025 |
| 7231 | Miken Oil, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2025 |
| 7232 | Milagro Exploration, LLC | Houston, TX 77010 | Oil & Gas Operator | Aug 2018 |
| 7233 | Milam, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Dec 2025 |
| 7234 | Miles Production Co. | Argyle, TX 76226 | Oil & Gas Operator | Mar 2008 |
| 7235 | Milestone Operating, Inc. | Montgomery, TX 77316 | Oil & Gas Operator | Dec 2025 |
| 7236 | Millennium Exploration Co. LLC | San Antonio, TX 78232 | Oil & Gas Operator | Dec 2025 |
| 7237 | Millennium Minerals Corporation | Fredericksbrg, TX 78624 | Oil Operator | Dec 2025 |
| 7238 | Millennium Offshore Group, Inc. | Houston, TX 77007 | Oil & Gas Operator | Sep 2005 |
| 7239 | Millennium Operating Company | Houston, TX 77057 | Oil & Gas Operator | Dec 2025 |
| 7240 | Millennium Petro-Physics, Inc. | Corpus Chrsti, TX 78480 | Oil & Gas Operator | Dec 2025 |
| 7241 | Millennium Resources, LLC. | Big Lake, TX 76932 | Oil & Gas Operator | Sep 2012 |
| 7242 | Millennium Resources, LP | Midland, TX 79708 | Oil Operator | Dec 2025 |
| 7243 | Miller Energy Inc | Houston, TX 77024 | Oil & Gas Operator | Oct 2016 |
| 7244 | Miller Oil & Gas, LLC | Snyder, TX 79549 | Oil & Gas Operator | Dec 2025 |
| 7245 | Miller Oil Company | Corsicana, TX 75110 | Oil & Gas Operator | Dec 2015 |
| 7246 | Miller Operating Company LLC | Lafayette, LA 70598 | Oil & Gas Operator | Dec 2025 |
| 7247 | Miller Petroleum LLC | Graham, TX 76450 | Oil Operator | Dec 2025 |
| 7248 | Miller Production Co. | Tyler, TX 75701 | Oil & Gas Operator | Dec 2025 |
| 7249 | Miller, B. H. Oil Co. | Corsicana, TX 75110 | Oil & Gas Operator | Sep 2002 |
| 7250 | Miller, Bob I. | Abilene, TX 79604 | Oil & Gas Operator | Mar 2008 |
| 7251 | Miller, C. R. Oil Co. | Olney, TX 76374 | Oil & Gas Operator | Dec 2025 |
| 7252 | Miller, Cecil G. | Corsicana, TX 75110 | Oil & Gas Operator | Jan 2023 |
| 7253 | Miller, Cecil G. Estate Of | Corsicana, TX 75110 | Oil Operator | Dec 2025 |
| 7254 | Miller, Donny | Cisco, TX 76437 | Oil & Gas Operator | Dec 2025 |
| 7255 | Miller, Dyer & Co LLC | Denver, CO 80202 | Oil & Gas Operator | May 2009 |
| 7256 | Miller, Glenn J. | Muenster, TX 76252 | Oil & Gas Operator | Jul 2025 |
| 7257 | Miller, L. Joe & Bobby J. Parker | Wichita Falls, TX 76308 | Oil & Gas Operator | Jul 2000 |
| 7258 | Miller, M. M. & Sons | Alice, TX 78333 | Oil & Gas Operator | Apr 2007 |
| 7259 | Miller, Mike | Corsicana, TX 75110 | Oil & Gas Operator | Dec 2025 |
| 7260 | Miller, Mike / Miller Prod. Co. | Corsicana, TX 75110 | Oil & Gas Operator | Dec 2025 |
| 7261 | Miller, R. A. Energy, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2003 |
| 7262 | Miller, Rex M. | Putnam, TX 76469 | Oil & Gas Operator | Sep 2022 |
| 7263 | Miller, W. C. Operating Company | San Antonio, TX 78209 | Oil & Gas Operator | Dec 2025 |
| 7264 | Mills Oil & Gas | Jacksboro, TX 76458 | Oil & Gas Operator | Mar 2008 |
| 7265 | Mills, H. E. | Lipan, TX 76462 | Oil & Gas Operator | Sep 2004 |
| 7266 | Mills, Jay | Stephenville, TX 76401 | Gas Operator | Apr 2022 |
| 7267 | Mills, Pete | Midland, TX 79707 | Oil & Gas Operator | Sep 2005 |
| 7268 | Millwee Oil, Inc. | Midland, TX 79705 | Oil & Gas Operator | Dec 2025 |
| 7269 | Millwee, John F. | Midland, TX 79705 | Oil & Gas Operator | Jul 2018 |
| 7270 | Milo-Austintatious | Houston, TX 77005 | Oil & Gas Operator | Aug 2006 |
| 7271 | Miltex Oil Company | Boerne, TX 78006 | Oil & Gas Operator | Dec 2025 |
| 7272 | Milton Oil & Gas Company | Charleston, WV 25322 | Gas Operator | Nov 1997 |
| 7273 | Miltuck Operating, Inc. | Elysian Field, TX 75642 | Oil & Gas Operator | Dec 1996 |
| 7274 | Mims, William S. | Pleasanton, TX 78064 | Oil Operator | Jun 2009 |
| 7275 | Min-Tex Oil Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Dec 1996 |
| 7276 | Mina Energy, Inc. | Boerne, TX 78006 | Oil & Gas Operator | Feb 2012 |
| 7277 | Minco Oil And Gas Co. | Pampa, TX 79066 | Oil & Gas Operator | Aug 2024 |
| 7278 | Miner, R. C. Inc. | Corpus Chrsti, TX 78413 | Oil & Gas Operator | Apr 2002 |
| 7279 | Miner, R. C. Oil, Inc. | MC Queeney, TX 78123 | Oil & Gas Operator | Dec 2025 |
| 7280 | Mineral Development, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Aug 1996 |
| 7281 | Mineral Resources, Incorporated | Lewisville, TX 75029 | Oil & Gas Operator | Dec 2025 |
| 7282 | Mineral Technologies, Inc. | Midland, TX 79704 | Oil & Gas Operator | Dec 2025 |
| 7283 | Minexprod LLC | Katy, TX 77494 | Oil Operator | Dec 2025 |
| 7284 | Mingus Oil & Gas | Mingus, TX 76463 | Oil & Gas Operator | Dec 2025 |
| 7285 | Minihan Oil & Gas Corporation | Midland, TX 79704 | Oil & Gas Operator | Apr 2004 |
| 7286 | Minihan Oil & Gas LTD. | Denver, CO 80202 | Oil & Gas Operator | Jul 2006 |
| 7287 | Mink, Jay, Oil Co. | Electra, TX 76360 | Oil & Gas Operator | Aug 2017 |
| 7288 | Minton Oil & Gas Properties | Graford, TX 76449 | Gas Operator | Dec 2025 |
| 7289 | Minuja Oil And Gas LLC | Corpus Christi, TX 78401 | Oil & Gas Operator | Sep 1996 |
| 7290 | Minute Hand LLC | Brenham, TX 77834 | Oil & Gas Operator | Dec 2025 |
| 7291 | Minuteman Energy, LLC | Georgetown, TX 78633 | Oil & Gas Operator | Feb 2015 |
| 7292 | Minyak Producing Company, Inc. | Sabine Pass, TX 77655 | Oil & Gas Operator | Dec 2025 |
| 7293 | Miocene Oil & Gas, Inc. | Englewood, CO 80155 | Oil & Gas Operator | Jul 1998 |
| 7294 | Miocene Oil & Gas, LTD. | Englewood, CO 80110 | Oil & Gas Operator | Dec 2025 |
| 7295 | Mir-Tex Energy Corp. | Mirando City, TX 78369 | Oil & Gas Operator | Aug 2003 |
| 7296 | Miramar Petroleum, Inc. | Corpus Chrsti, TX 78463 | Oil & Gas Operator | Sep 2017 |
| 7297 | Miranda Energy Corporation | Midland, TX 79705 | Oil & Gas Operator | Jun 2016 |
| 7298 | Mirando Crude Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Jul 1994 |
| 7299 | Mirando Resource, L.L.C. | Freer, TX 78357 | Oil & Gas Operator | Dec 2025 |
| 7300 | Miresco, Inc. | Houston, TX 77060 | Oil & Gas Operator | Jan 1995 |