| 7201 | Morgan Enterprises, Inc. | Houston, TX 77024 | Oil & Gas Operator | May 2024 |
| 7202 | Morgan Oil Company | Nacogdoches, TX 75963 | Oil & Gas Operator | May 2006 |
| 7203 | Morgan, C. V. Partnership | Olney, TX 76374 | Oil & Gas Operator | Jan 2009 |
| 7204 | Moriah Operating,LLC | Midland, TX 79701 | Oil & Gas Operator | May 2024 |
| 7205 | Moriah Resources, Inc. | Midland, TX 79704 | Oil & Gas Operator | Mar 2008 |
| 7206 | Mormar Family Holdings, L.L.C. | Breckenridge, TX 76424 | Oil & Gas Operator | May 2024 |
| 7207 | Morningstar Gas, Inc. | Las Vegas, NV 89117 | Gas Operator | May 2024 |
| 7208 | Morningstar Operating LLC | Fort Worth, TX 76102 | Oil & Gas Operator | May 2024 |
| 7209 | Morningstar Partners, L.P. | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2022 |
| 7210 | Morred, Inc. | Borger, TX 79007 | Oil & Gas Operator | May 2024 |
| 7211 | Morrell, W. R. | Albany, TX 76430 | Oil & Gas Operator | May 2024 |
| 7212 | Morris Operating Co | Lovington, NM 88260 | Oil & Gas Operator | May 2024 |
| 7213 | Morris R. Greenhaw Oil&Gas, Inc | Desdemona, TX 76445 | Oil & Gas Operator | May 2024 |
| 7214 | Morris, W. Dale Inc. | Mineral Wells, TX 76068 | Oil & Gas Operator | May 2024 |
| 7215 | Morrison DRLG. & Prod. Co., Inc. | Abilene, TX 79606 | Oil & Gas Operator | Nov 2008 |
| 7216 | Morrow Resources, Inc. | San Angelo, TX 76904 | Oil & Gas Operator | Oct 2004 |
| 7217 | Morsey Oil & Gas Corporation | Corpus Chrsti, TX 78401 | Oil & Gas Operator | May 2024 |
| 7218 | Mortimer Exploration Company | San Antonio, TX 78209 | Oil & Gas Operator | Sep 2003 |
| 7219 | Mortimer Production Company | San Antonio, TX 78209 | Oil & Gas Operator | May 2024 |
| 7220 | Morton, J. V. Oil Co. | Iowa Park, TX 76367 | Oil & Gas Operator | Nov 1999 |
| 7221 | Mosaic Midland LLC | Dallas, TX 75367 | Oil Operator | May 2024 |
| 7222 | Mosaic Oil LLC | Dallas, TX 75205 | Oil & Gas Operator | May 2024 |
| 7223 | Mosaic Pecos LLC | Dallas, TX 75367 | Oil Operator | May 2024 |
| 7224 | Mosaic Texas LLC | Dallas, TX 75205 | Oil & Gas Operator | May 2024 |
| 7225 | Mosbacher Energy Company | Houston, TX 77002 | Oil & Gas Operator | May 2024 |
| 7226 | Moseley, J. T. | Temple, TX 76502 | Oil & Gas Operator | Sep 2008 |
| 7227 | Moses, Tom | Beaumont, TX 77702 | Oil Operator | May 2024 |
| 7228 | Mosley Oil &Gas Inc | Houston, TX 77002 | Oil & Gas Operator | May 2024 |
| 7229 | Mosman Operating, LLC | Dallas, TX 75204 | Oil Operator | May 2024 |
| 7230 | Moss Petroleum Company | Dallas, TX 75207 | Oil & Gas Operator | May 2024 |
| 7231 | Moss SWD, LLC | Booker, TX 79005 | Oil Operator | May 2024 |
| 7232 | Moss, William Corp. | Dallas, TX 75219 | Oil & Gas Operator | Oct 2002 |
| 7233 | Mote Resources, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Dec 2004 |
| 7234 | Mountain Creek Oil Company, Inc. | Saint Jo, TX 76265 | Oil & Gas Operator | May 2024 |
| 7235 | Mowata Oil Company | Victoria, TX 77903 | Oil & Gas Operator | Oct 1996 |
| 7236 | Moxy Oil Company | Seguin, TX 78155 | Oil & Gas Operator | Aug 2003 |
| 7237 | Moy, Gary | Falls City, TX 78113 | Oil & Gas Operator | Nov 1998 |
| 7238 | Moylan, Jimmie C. | Eastland, TX 76448 | Oil & Gas Operator | May 2024 |
| 7239 | MPG Petroleum | San Antonio, TX 78217 | Oil & Gas Operator | Aug 2003 |
| 7240 | MPG Petroleum, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | May 2024 |
| 7241 | Mr Oil Company | Monahans, TX 79756 | Oil & Gas Operator | Nov 2004 |
| 7242 | MRR Oil Inc. | Perryton, TX 79070 | Oil & Gas Operator | Jun 2002 |
| 7243 | MSB Operating | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2024 |
| 7244 | MSD Operating, LLC | Big Spring, TX 79721 | Oil & Gas Operator | May 2024 |
| 7245 | Mse Operating Corp. | Beaverton, OR 97008 | Oil & Gas Operator | May 2024 |
| 7246 | MSN Oil, Inc. | Avoca, TX 79503 | Oil Operator | May 2024 |
| 7247 | MSR Exploration, Inc. | Winters, TX 79567 | Oil & Gas Operator | Mar 2000 |
| 7248 | MSSK Consulting LLC | San Antonio, TX 78253 | Oil Operator | May 2024 |
| 7249 | MT Energy LLC | Waskom, TX 75692 | Oil & Gas Operator | May 2024 |
| 7250 | MTBB Acquisition Company, LLC | Houston, TX 77002 | Oil & Gas Operator | Aug 2022 |
| 7251 | MTS Operating, Inc. | Borger, TX 79008 | Oil & Gas Operator | Dec 2004 |
| 7252 | Mud Creek Operating, LLC | Tyler, TX 75702 | Oil & Gas Operator | May 2024 |
| 7253 | Mudslinger Oil, L.L.C. | Abilene, TX 79601 | Oil Operator | May 2024 |
| 7254 | Mueller Engineering Corp. | Corpus Chrsti, TX 78476 | Oil & Gas Operator | Feb 2002 |
| 7255 | Mueller Exploration, Inc. | Portland, TX 78374 | Oil & Gas Operator | May 2024 |
| 7256 | Muenster Drilling Co. Inc. | Muenster, TX 76252 | Oil & Gas Operator | May 2024 |
| 7257 | Mugg, John D. Jr. | San Antonio, TX 78216 | Oil & Gas Operator | Nov 1997 |
| 7258 | Muirfield Exploration, LTD. | Wichita Falls, TX 76301 | Oil & Gas Operator | May 2024 |
| 7259 | Muirfield Resources Company | Tulsa, OK 74101-3166 | Oil & Gas Operator | Jan 2024 |
| 7260 | Muller Oil & Gas | Wichita Falls, TX 76307 | Oil & Gas Operator | May 2024 |
| 7261 | Mullin, W. B. | Graham, TX 76450 | Oil & Gas Operator | Sep 1998 |
| 7262 | Mullins, Manuel | Olney, TX 76374 | Oil & Gas Operator | May 2024 |
| 7263 | Mulloy Operating, Inc. | Midland, TX 79701 | Oil & Gas Operator | May 2024 |
| 7264 | Mulloy, J. W. Associates, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jan 2003 |
| 7265 | Multipay Energy, Inc. | Austin, TX 78749 | Oil Operator | May 2024 |
| 7266 | Munn, W. H. Operating Company | Midland, TX 79702 | Oil & Gas Operator | Sep 2002 |
| 7267 | Munoco Co. | El Dorado, AR 71730 | Oil & Gas Operator | Jul 2021 |
| 7268 | Munoz Farms Operating Co., LLC | Carrizo SPGS, TX 78834 | Oil & Gas Operator | May 2024 |
| 7269 | Munoz, Magdaleno C. | Borger, TX 79007 | Oil Operator | May 2024 |
| 7270 | Munson Operating, Inc. | Dallas, TX 75251 | Oil & Gas Operator | May 2024 |
| 7271 | Munson, Charles C. | Dallas, TX 75201 | Oil & Gas Operator | Apr 2002 |
| 7272 | Munson, David M. | Dallas, TX 75201 | Oil & Gas Operator | Mar 2015 |
| 7273 | Munson, David M. Inc. | Dallas, TX 75251 | Oil & Gas Operator | May 2024 |
| 7274 | Munson, E. P., Jr. | Fort Worth, TX 76121 | Oil & Gas Operator | Oct 1995 |
| 7275 | Muras Energy, Inc. | Edmond, OK 73013 | Oil & Gas Operator | Feb 2024 |
| 7276 | Murchison Oil & Gas Inc | Plano, TX 75024 | Oil & Gas Operator | Mar 2024 |
| 7277 | Murchison Oil And Gas, LLC | Plano, TX 75024 | Oil & Gas Operator | May 2024 |
| 7278 | Murex Petroleum Corporation | Humble, TX 77347 | Oil & Gas Operator | Mar 2024 |
| 7279 | Murjo Oil & Royalty Company | Fort Worth, TX 76121 | Oil & Gas Operator | Jan 2024 |
| 7280 | Muroz International Group Inc | Houston, TX 77056 | Oil Operator | May 2024 |
| 7281 | Murphree Brothers Production | Monahans, TX 79756 | Oil & Gas Operator | May 2024 |
| 7282 | Murphree Energy, Inc. | Monahans, TX 79756 | Oil Operator | May 2024 |
| 7283 | Murphree Production | Monahans, TX 79756 | Oil & Gas Operator | Jul 2014 |
| 7284 | Murphy & Associates, Inc. | Snyder, TX 79549 | Oil & Gas Operator | Oct 1996 |
| 7285 | Murphy Energy Services, LP | Saratoga, TX 77585 | Oil Operator | Dec 2018 |
| 7286 | Murphy Expl. & Prod. Co. - USA | Houston, TX 77024 | Oil & Gas Operator | May 2024 |
| 7287 | Murphy Exploration & Prod. Co. | Houston, TX 77094 | Oil & Gas Operator | Jun 2011 |
| 7288 | Murphy Exploration & Production | Houston, TX 77024 | Oil Operator | Feb 2024 |
| 7289 | Murphy Oil USA Inc | New Orleans, LA 70161 | Oil & Gas Operator | Jan 1993 |
| 7290 | Murphy Production Corp. | Austin, TX 78731 | Oil & Gas Operator | Sep 2013 |
| 7291 | Murphy, Bill W. Operating Co,Inc | Richardson, TX 75080 | Oil & Gas Operator | May 2024 |
| 7292 | Murphy, K. P. Oil Operator | Kilgore, TX 75663 | Oil & Gas Operator | May 2024 |
| 7293 | Murray, Tom Enterprises | Monahans, TX 79756 | Oil & Gas Operator | May 2024 |
| 7294 | Muskegon Development Company | MT Pleasant, MI 48858 | Oil & Gas Operator | May 2024 |
| 7295 | Musselman, Owen & King Oper.,Inc | Houston, TX 77002 | Oil & Gas Operator | Feb 1998 |
| 7296 | Mustang Drilling, Inc. | Henderson, TX 75653 | Oil & Gas Operator | May 2024 |
| 7297 | Mustang Drilling, LTD. | Henderson, TX 75653 | Oil & Gas Operator | May 2008 |
| 7298 | Mustang Energy Inc. | Porter, TX 77365 | Oil & Gas Operator | Mar 2008 |
| 7299 | Mustang Fuel Corp. Of Oklahoma | Oklahoma City, OK 73106 | Oil & Gas Operator | Nov 2016 |
| 7300 | Mustang Fuel Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Mar 2024 |