| 2301 | Mullen Jr J S | | Oil & Gas Operator | Feb 1992 |
| 2302 | Mullen Resources LLC | Reedy, WV 25270 | Oil & Gas Operator | Dec 2021 |
| 2303 | Mullen William Company | Edmond, OK 73083-1372 | Oil & Gas Operator | May 1999 |
| 2304 | Mullen-Hathorn-Bass | | Oil & Gas Operator | Mar 1985 |
| 2305 | Muller Oil & Gas | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2024 |
| 2306 | Mullin, W. B. | Graham, TX 76450 | Oil & Gas Operator | Sep 1998 |
| 2307 | Mullins & Prichard | | Oil & Gas Operator | May 1992 |
| 2308 | Mullins Jimmy R Dba Southcreek Petroleum Co | Dibble, OK 73031 | Oil & Gas Operator | Jan 2021 |
| 2309 | Mullins John S | Hominy, OK 74035 | Oil Operator | Nov 2014 |
| 2310 | Mullins Well Service | MT Gilead, OH 43338 | Oil & Gas Operator | Dec 2018 |
| 2311 | Mullins, Manuel | Olney, TX 76374 | Oil & Gas Operator | Dec 2024 |
| 2312 | Mulloy Operating, Inc. | Midland, TX 79701 | Oil & Gas Operator | Dec 2024 |
| 2313 | Mulloy, J. W. Associates, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jan 2003 |
| 2314 | Multipay Energy, Inc. | Austin, TX 78749 | Oil Operator | Dec 2024 |
| 2315 | Multiplex Resources, Inc. | Baytown, TX 77521 | Oil Operator | Dec 2009 |
| 2316 | Mumford, Catherine | Waterloo, NY 13165 | Gas Operator | Dec 2023 |
| 2317 | Mumford-Gabel, Jennifer And Kyle Gabel | Lawtons, NY 14091 | Gas Operator | Dec 2023 |
| 2318 | Mumma Oil Production Co., Inc. | Allentown, PA 18109-0000 | Oil & Gas Operator | Dec 2019 |
| 2319 | Munday Operating Co., L.L.C. | | Oil & Gas Operator | May 2007 |
| 2320 | Mundell F E | Watertown, SD 57201 | Oil & Gas Operator | Aug 1994 |
| 2321 | Munn, W. H. Operating Company | Midland, TX 79702 | Oil & Gas Operator | Sep 2002 |
| 2322 | Munoco Co. | El Dorado, AR 71730 | Oil & Gas Operator | Jul 2021 |
| 2323 | Munoco Co. L.C. | | Oil & Gas Operator | Jun 2003 |
| 2324 | Munoz Farms Operating Co., LLC | Carrizo SPGS, TX 78834 | Oil & Gas Operator | Dec 2024 |
| 2325 | Munoz, Magdaleno C. | Borger, TX 79007 | Oil Operator | Dec 2024 |
| 2326 | Munson Dave Company | Dallas, TX 75201-3591 | Oil Operator | Aug 1996 |
| 2327 | Munson Operating, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Dec 2024 |
| 2328 | Munson, Charles C. | Dallas, TX 75201 | Oil & Gas Operator | Apr 2002 |
| 2329 | Munson, David M. | Dallas, TX 75201 | Oil & Gas Operator | Mar 2015 |
| 2330 | Munson, David M. Inc. | Dallas, TX 75251 | Oil & Gas Operator | Dec 2024 |
| 2331 | Munson, E. P., Jr. | Fort Worth, TX 76121 | Oil & Gas Operator | Oct 1995 |
| 2332 | Muras Energy Inc | Edmond, OK 73013 | Oil & Gas Operator | Oct 2024 |
| 2333 | Murchison Oil & | | Oil Operator | Mar 1988 |
| 2334 | Murchison Oil & Gas Inc | Plano, TX 75024 | Oil & Gas Operator | Mar 2024 |
| 2335 | Murchison Oil And Gas, LLC | Plano, TX 75024 | Oil & Gas Operator | Dec 2024 |
| 2336 | Murchison Trusts | | Gas Operator | Sep 2003 |
| 2337 | Murchison, G. B. Trust | Dallas, TX 75283 | Oil & Gas Operator | Sep 1994 |
| 2338 | Murdoch Oil Co Inc | Bluff, UT 84512 | Oil & Gas Operator | Jun 2010 |
| 2339 | Murex Petroleum Corporation | Humble, TX 77347 | Oil & Gas Operator | Nov 2024 |
| 2340 | Murexco Petroleum, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Oct 1996 |
| 2341 | Murfin Drilling | | Oil & Gas Operator | Jul 1997 |
| 2342 | Murfin Drilling Company Inc | Wichita, KS 67202 | Oil & Gas Operator | Nov 2024 |
| 2343 | Murjo Oil & Royalty Company | Fort Worth, TX 76121 | Oil & Gas Operator | Jul 2024 |
| 2344 | Murk, James M. | Wheaton, IL 60189 | Gas Operator | Jan 1999 |
| 2345 | Muroz International Group Inc | Houston, TX 77056 | Oil Operator | Dec 2024 |
| 2346 | Murphree Brothers Production | Monahans, TX 79756 | Oil & Gas Operator | Dec 2024 |
| 2347 | Murphree Energy, Inc. | Monahans, TX 79756 | Oil Operator | Nov 2024 |
| 2348 | Murphree Production | Monahans, TX 79756 | Oil & Gas Operator | Jul 2014 |
| 2349 | Murphrey Oil Co | | Oil Operator | Jul 2024 |
| 2350 | Murphy & Associates, Inc. | Snyder, TX 79549 | Oil & Gas Operator | Oct 1996 |
| 2351 | Murphy - Sun | | Oil & Gas Operator | May 1989 |
| 2352 | Murphy D V | | Oil Operator | Dec 1989 |
| 2353 | Murphy Energy Services, LP | Saratoga, TX 77585 | Oil Operator | Dec 2018 |
| 2354 | Murphy Exp & Prod Co.-USA | | Oil & Gas Operator | May 2014 |
| 2355 | Murphy Expl. & Prod. Co. - USA | Houston, TX 77024 | Oil & Gas Operator | Dec 2024 |
| 2356 | Murphy Exploration & Prod. Co. | Houston, TX 77094 | Oil & Gas Operator | Jun 2011 |
| 2357 | Murphy Exploration & Production | Houston, TX 77024 | Oil Operator | Oct 2024 |
| 2358 | Murphy Helen Colpitt Trust | Collinsville, OK 74021-0128 | Oil & Gas Operator | May 2002 |
| 2359 | Murphy Jack L | Tulsa, OK 74104-4915 | Oil Operator | Mar 2015 |
| 2360 | Murphy Oil Company Inc | Lancaster, OH 43130 | Oil & Gas Operator | Dec 2023 |
| 2361 | Murphy Oil USA Inc | New Orleans, LA 70161 | Oil & Gas Operator | Jan 1993 |
| 2362 | Murphy Operating Corp | Roswell, NM 88202 | Oil & Gas Operator | Apr 1998 |
| 2363 | Murphy Prod Inc | Vanderbilt, PA 15486-1001 | Oil & Gas Operator | Dec 2023 |
| 2364 | Murphy Production Co. (Inc.) | | Oil & Gas Operator | Apr 1991 |
| 2365 | Murphy Production Corp. | Austin, TX 78731 | Oil & Gas Operator | Sep 2013 |
| 2366 | Murphy S J Oil & Gas Inc | Edmond, OK 73034 | Oil & Gas Operator | Oct 2024 |
| 2367 | Murphy Sheldon L & Loretta | Newcastle, WY 82701 | Oil & Gas Operator | Nov 2024 |
| 2368 | Murphy, Bill W. Operating Co,Inc | Richardson, TX 75080 | Oil & Gas Operator | Dec 2024 |
| 2369 | Murphy, Charles H. | Altoona, KS 66710 | Oil Operator | Jul 2022 |
| 2370 | Murphy, Douglas S. | Sherman, NY 14781 | Gas Operator | Dec 2023 |
| 2371 | Murphy, Earl M. | Madison, KS 66860 | Oil Operator | Jun 1999 |
| 2372 | Murphy, K. P. Oil Operator | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2024 |
| 2373 | Murray Hill Energy, Inc. | Bridgeport, WV 26330 | Oil & Gas Operator | Dec 2017 |
| 2374 | Murray J. Evans | | Oil Operator | Mar 1985 |
| 2375 | Murray, Tom Enterprises | Monahans, TX 79756 | Oil & Gas Operator | Dec 2024 |
| 2376 | Murray-Teague Assoc. | | Oil Operator | Dec 2005 |
| 2377 | Murtha Contracting Inc. | Conneaut, OH 44030 | Oil & Gas Operator | Dec 2009 |
| 2378 | Murvin & Meier Oil Co. | | Oil & Gas Operator | Dec 2020 |
| 2379 | Musgrave, Dalton | | Oil Operator | Dec 2020 |
| 2380 | Musgrove Casey O | | Oil Operator | Oct 1993 |
| 2381 | Musgrove Energy Inc | Ponca City, OK 74602 | Oil & Gas Operator | Aug 2024 |
| 2382 | Musgrove Petrole | | Oil & Gas Operator | Dec 1996 |
| 2383 | Musgrove Produci | | Oil Operator | May 1989 |
| 2384 | Musgrove Producing | El Dorado, KS 67042 | Oil Operator | Apr 2001 |
| 2385 | Musgrove, Casey Oil | Ponca City, OK 74602-0391 | Oil & Gas Operator | Jun 2017 |
| 2386 | Muskegon Development Co And Miller Energy Inc An | | Gas Operator | Dec 1997 |
| 2387 | Muskegon Development Company | MT Pleasant, MI 48858 | Oil & Gas Operator | Dec 2024 |
| 2388 | Muskegon Operating Company LLC | | Oil & Gas Operator | Oct 2024 |
| 2389 | Muslow And Parker | | Oil & Gas Operator | Jul 1994 |
| 2390 | Muslow Oil Industries | | Oil Operator | Jan 1995 |
| 2391 | Musselman, Owen & King Oper.,Inc | Houston, TX 77002 | Oil & Gas Operator | Feb 1998 |
| 2392 | Musshafen, Denis | Linwood, NY 14486 | Gas Operator | Dec 2023 |
| 2393 | Mustang Drilling | | Oil & Gas Operator | Nov 1996 |
| 2394 | Mustang Drilling, Inc. | Henderson, TX 75653 | Oil & Gas Operator | Aug 2024 |
| 2395 | Mustang Drilling, LTD. | Henderson, TX 75653 | Oil & Gas Operator | May 2008 |
| 2396 | Mustang Energy Corporation | Hays, KS 67601 | Oil Operator | Sep 2024 |
| 2397 | Mustang Energy Inc. | Porter, TX 77365 | Oil & Gas Operator | Mar 2008 |
| 2398 | Mustang Energy L C | | Oil & Gas Operator | Jan 2013 |
| 2399 | Mustang Fuel Cor | | Oil & Gas Operator | Dec 1990 |
| 2400 | Mustang Fuel Corp. Of Oklahoma | Oklahoma City, OK 73106 | Oil & Gas Operator | Nov 2016 |