| 18201 | Marline Oil Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 1989 |
| 18202 | Marline Petroleum Corporation | | Oil & Gas Operator | Dec 1985 |
| 18203 | Marlow Environmental LLC | Marlow, OK 73055 | Oil Operator | May 2022 |
| 18204 | Marlyn Company | | Oil & Gas Operator | Dec 2009 |
| 18205 | Marmac Petroleum | | Oil & Gas Operator | Oct 1994 |
| 18206 | Marmac Petroleum Company | Denver, CO 80222 | Oil Operator | Apr 1998 |
| 18207 | Marmac Resources Co. | | Oil & Gas Operator | Mar 2015 |
| 18208 | Marmac Resources Inc | | Oil Operator | Nov 1998 |
| 18209 | Marmaton Oil Company | Houston, TX 77002 | Oil & Gas Operator | Jul 1998 |
| 18210 | Marmik Oil Compa | | Oil Operator | Jun 1995 |
| 18211 | Marmik Oil Company | El Dorado, AR 71730 | Oil & Gas Operator | Jan 2015 |
| 18212 | Maroon Energy LLC | Spring, TX 77379 | Oil & Gas Operator | Jun 2025 |
| 18213 | Maroski, Inc. | | Oil Operator | Jan 1989 |
| 18214 | Marple Petroleum LLC | Edmond, OK 73013 | Oil Operator | Apr 2025 |
| 18215 | Marquee Corporation | Houston, TX 77024 | Oil & Gas Operator | Jun 2025 |
| 18216 | Marquis Resources, LLC | | Oil & Gas Operator | Jul 2021 |
| 18217 | Marquis-Allred Eng Inc | | Oil & Gas Operator | Apr 1992 |
| 18218 | Marquise Oil Properties Inc | Konawa, OK 74849 | Oil & Gas Operator | Nov 1992 |
| 18219 | Marr Company | | Oil & Gas Operator | Mar 1989 |
| 18220 | Marr, M. H. | Dallas, TX 75201 | Gas Operator | Jan 2002 |
| 18221 | Marrow, N. S. | Austin, TX 78703 | Oil & Gas Operator | Aug 2012 |
| 18222 | Marrs Bros Oil Co Inc | Drumright, OK 74030 | Oil Operator | Sep 1994 |
| 18223 | Marrs, Richard L.(Deceased) | Arkansas City, KS 67005 | Oil & Gas Operator | Feb 2013 |
| 18224 | Marsh Engineering, Inc. | | Oil & Gas Operator | Dec 1990 |
| 18225 | Marsh Lonnie C | Konawa, OK 74849 | Oil & Gas Operator | Mar 2025 |
| 18226 | Marsh Oil & Gas Company | Pauls Valley, OK 73075 | Oil & Gas Operator | Mar 2025 |
| 18227 | Marsh Oil & Gas Field Services, Inc | Sebree, KY 42455 | Oil & Gas Operator | Dec 2023 |
| 18228 | Marsh Operating Company | Dallas, TX 75221 | Oil & Gas Operator | Feb 2025 |
| 18229 | Marsha Azar | | Oil & Gas Operator | Jan 2017 |
| 18230 | Marshall & McCain | | Oil & Gas Operator | Oct 1988 |
| 18231 | Marshall & Winston, Inc. | Midland, TX 79710 | Oil & Gas Operator | Jun 2025 |
| 18232 | Marshall Energy, Inc. | Dallas, TX 75243 | Oil & Gas Operator | May 1997 |
| 18233 | Marshall Exploration, Inc. | | Oil & Gas Operator | Jun 1992 |
| 18234 | Marshall Lew L O | | Oil Operator | Jun 1994 |
| 18235 | Marshall Oil Corporation | Oklahoma City, OK 73154 | Oil & Gas Operator | Apr 2017 |
| 18236 | Marshall Oil, LLC | Eureka, KS 67045 | Oil Operator | Feb 2025 |
| 18237 | Marshall Petroleum, Inc. | Houston, TX 77040 | Oil & Gas Operator | Aug 2003 |
| 18238 | Marshall Pipe & Supply Co. | Nocona, TX 76255 | Oil & Gas Operator | Mar 2008 |
| 18239 | Marshall Prod. & Energy Inc. | | Oil & Gas Operator | Jan 1992 |
| 18240 | Marshall Production Co Inc | | Oil & Gas Operator | Jun 1989 |
| 18241 | Marshall R Young Oil Co | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 1996 |
| 18242 | Marshall R. Young Operating, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2025 |
| 18243 | Marshall Richard R | Jeromesville, OH 44840 | Oil & Gas Operator | Dec 2023 |
| 18244 | Marshall Young Oil Co | | Oil & Gas Operator | Jan 2007 |
| 18245 | Marshall, A. B. | Houston, TX 77050 | Oil & Gas Operator | Sep 1995 |
| 18246 | Marshall, Dale | | Gas Operator | Dec 1995 |
| 18247 | Marshall, Sam | Granbury, TX 76048 | Oil & Gas Operator | Aug 2010 |
| 18248 | Marshall, Samuel Meek, Estate Of | Granbury, TX 76048 | Oil & Gas Operator | Jun 2025 |
| 18249 | Marshco Production LLC | Colorado City, TX 79512 | Oil Operator | Jun 2025 |
| 18250 | Marshel Inv | | Oil Operator | Oct 1991 |
| 18251 | Marshfield Oil & Gas, LLC | Houston, TX 77070 | Oil & Gas Operator | Jun 2025 |
| 18252 | Marshland Exploration Company | | Oil & Gas Operator | May 2006 |
| 18253 | Martec Petroleum | | Oil Operator | Jan 1984 |
| 18254 | Martens & Peck Operating Co | | Gas Operator | Feb 1997 |
| 18255 | Martens & Peck Production Co | Denver, CO 80222 | Oil & Gas Operator | Feb 1997 |
| 18256 | Martex Oil & Gas, Inc. | Estes Park, CO 80517 | Oil & Gas Operator | Jun 2025 |
| 18257 | Martin & Richards Oil Co. | Jacksboro, TX 76458 | Oil & Gas Operator | Jul 1995 |
| 18258 | Martin Billy G | Okmulgee, OK 74447 | Oil & Gas Operator | May 2013 |
| 18259 | Martin Bros. Oil | Graham, TX 76450 | Oil & Gas Operator | Dec 1993 |
| 18260 | Martin Burt K | Henryetta, OK 74437 | Oil & Gas Operator | Jul 2008 |
| 18261 | Martin Cannon Interests, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Jun 2025 |
| 18262 | Martin Energy LLC | | Oil & Gas Operator | Apr 2023 |
| 18263 | Martin Exploration | Westminster, CO 80030 | Oil & Gas Operator | Dec 1993 |
| 18264 | Martin Exploration Co. | | Oil & Gas Operator | Apr 1986 |
| 18265 | Martin Foree Operating II, LLC | Royse City, TX 75189 | Oil & Gas Operator | Jun 2025 |
| 18266 | Martin Foree Operating, LLC | Royse City, TX 75189 | Oil & Gas Operator | Jun 2025 |
| 18267 | Martin Gas Sales, Inc. | Kilgore, TX 75662 | Oil & Gas Operator | May 1993 |
| 18268 | Martin J S Oil O | | Oil & Gas Operator | Apr 1991 |
| 18269 | Martin John R | Cushing, OK 74023 | Oil & Gas Operator | Apr 1995 |
| 18270 | Martin Jr, James U | | Oil & Gas Operator | Mar 2025 |
| 18271 | Martin Larrey C | Marietta, OH 45750 | Oil & Gas Operator | Dec 2024 |
| 18272 | Martin Larry And/Or Sheila Dba Three Stooges Oil | Pawnee, OK 74058 | Oil Operator | Mar 2025 |
| 18273 | Martin Matrix Inc. | San Angelo, TX 76905 | Oil & Gas Operator | Jun 2025 |
| 18274 | Martin Oil & Gas | Freer, TX 78357 | Oil & Gas Operator | Mar 2025 |
| 18275 | Martin Oil & Gas Co. | | Oil Operator | Jul 1981 |
| 18276 | Martin Oil & Gas Inc. | Freer, TX 78357 | Oil & Gas Operator | Jun 2025 |
| 18277 | Martin Oil Co. | Aspermont, TX 79502 | Oil & Gas Operator | Jul 2023 |
| 18278 | Martin Oil LLC | Madison, KS 66860 | Oil Operator | Feb 2025 |
| 18279 | Martin Oil Produ | | Oil & Gas Operator | Dec 1994 |
| 18280 | Martin Oil Producers, Inc. | Garland, TX 75046 | Oil & Gas Operator | Aug 2013 |
| 18281 | Martin Oil Properties | | Oil Operator | Dec 2009 |
| 18282 | Martin Petroleum Corp. | Graham, TX 76450 | Oil & Gas Operator | Jun 2025 |
| 18283 | Martin Phillips | | Oil Operator | Dec 1987 |
| 18284 | Martin Production Company | | Oil & Gas Operator | Dec 2024 |
| 18285 | Martin Production Corporation | Graham, TX 76450 | Oil Operator | Apr 2025 |
| 18286 | Martin Tank Truck & Casing Pulling Inc | Cushing, OK 74023 | Oil & Gas Operator | Apr 2015 |
| 18287 | Martin Well Service | Graham, TX 76450 | Oil & Gas Operator | Jun 2015 |
| 18288 | Martin Well Service Company | Mineral Wells, TX 76067 | Oil & Gas Operator | Jul 2006 |
| 18289 | Martin'S Resources LLC | Woodward, OK 73801-5641 | Oil & Gas Operator | Mar 2025 |
| 18290 | Martin, Bob | Wann, OK 74083 | Oil & Gas Operator | Sep 2007 |
| 18291 | Martin, Dail D. | Madison, KS 66860 | Oil Operator | Dec 2019 |
| 18292 | Martin, Jimmy Inc | San Angelo, TX 76904 | Oil & Gas Operator | Jun 2025 |
| 18293 | Martin, John I. | Graham, TX 76450 | Oil & Gas Operator | Jun 2025 |
| 18294 | Martin, Landis | Geneva, NY 14456 | Gas Operator | Dec 2023 |
| 18295 | Martin, Pat Jr. | Archer City, TX 76351 | Oil & Gas Operator | Dec 2019 |
| 18296 | Martin, Philip H. | Ellis, KS 67637 | Oil Operator | Apr 2000 |
| 18297 | Martin, Tim | Wichita Falls, TX 76302 | Oil & Gas Operator | Oct 2003 |
| 18298 | Martin, William C. | Houston, TX 77071 | Oil & Gas Operator | Jun 2025 |
| 18299 | Martin-Marks Operating Co. LLC | | Oil & Gas Operator | Dec 2010 |
| 18300 | Martindale Enter | | Oil & Gas Operator | Oct 1996 |