| 18401 | Mbi Oil & Gas LLC | Dickinson, ND 58601 | Oil & Gas Operator | May 2025 |
| 18402 | MBM Partnership | | Gas Operator | Nov 1991 |
| 18403 | MBM Production, LLC | Pikeville, KY 41501 | Oil & Gas Operator | Dec 2023 |
| 18404 | Mbo, LLC | | Oil Operator | Jan 2025 |
| 18405 | MBR Resources, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Jul 2025 |
| 18406 | MBS Resources Inc | Wilcox, PA 15870-1810 | Oil & Gas Operator | Dec 2024 |
| 18407 | MBX Operating LLC | Houston, TX 77007 | Oil & Gas Operator | Jul 2025 |
| 18408 | MC C Oil Co Inc | Sedan, KS 67361 | Oil Operator | Apr 2016 |
| 18409 | MC Glover, LLC | Albany, TX 76430 | Oil Operator | Jul 2025 |
| 18410 | MC Oil, LLC | Morganfield, KY 42437 | Oil Operator | Dec 2023 |
| 18411 | MC Panhandle, Inc. | Tulsa, OK 74102 | Gas Operator | Jul 1998 |
| 18412 | MC1 Consulting, Inc. | San Antonio, TX 78209 | Oil Operator | Jul 2025 |
| 18413 | MC123 LLC | Indiana, PA 15701-8718 | Gas Operator | Dec 2024 |
| 18414 | McA Petroleum Corporation | Flatonia, TX 78941 | Oil & Gas Operator | Jul 2025 |
| 18415 | McAdams Roux & Associates | Denver, CO 80202 | Oil & Gas Operator | Dec 1999 |
| 18416 | McAdams, J F | | Oil Operator | May 1971 |
| 18417 | McAlester Fuel Co | Houston, TX 77042 | Oil & Gas Operator | Jan 2010 |
| 18418 | McAnear Oil & Gas | Freer, TX 78357 | Oil & Gas Operator | Dec 2002 |
| 18419 | McAninch J W | Tonkawa, OK 74653 | Oil & Gas Operator | Nov 2000 |
| 18420 | McAninch Michael E | Tonkawa, OK 74653-4415 | Oil & Gas Operator | May 2013 |
| 18421 | McAninch W Kent | Tonkawa, OK 74653-4216 | Oil & Gas Operator | Oct 2016 |
| 18422 | McBay Company | Grapeland, TX 75844 | Oil & Gas Operator | Feb 2002 |
| 18423 | McBee Company, The | Dallas, TX 75219 | Oil & Gas Operator | Dec 1997 |
| 18424 | McBee Operating Company, L.L.C. | Dallas, TX 75209 | Oil & Gas Operator | Jul 2025 |
| 18425 | McBee, Jim Co. | Santa Anna, TX 76878 | Oil & Gas Operator | Mar 2012 |
| 18426 | McBo Oil Co. | | Oil & Gas Operator | Dec 1996 |
| 18427 | McBrayer Oil Corporation | Rockport, TX 78381 | Oil & Gas Operator | Nov 1994 |
| 18428 | McBride Operating LLC | Kilgore, TX 75663 | Oil & Gas Operator | Jul 2025 |
| 18429 | McBride Production Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | May 1993 |
| 18430 | McBride, Jane | Perry, NY 14530 | Gas Operator | Dec 2024 |
| 18431 | McBride, Jerrel L Enterprise Inc | Kilgore, TX 75663 | Oil & Gas Operator | Jun 1999 |
| 18432 | McBride, Nicholas J. & Holly M. | Lakeland, FL 33810 | Gas Operator | Dec 2024 |
| 18433 | McCabe Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Aug 2009 |
| 18434 | McCabe Oil And Gas LLC / Osage Only | | Oil Operator | Apr 2025 |
| 18435 | McCabe, William G | | Oil & Gas Operator | Aug 2013 |
| 18436 | McCaffery & Krampf Oil Co. | Allegany, NY 14706 | Oil Operator | Dec 2012 |
| 18437 | McCall Carl E | Fairmount City, PA 16224 | Oil & Gas Operator | Dec 2024 |
| 18438 | McCamey Oil And Gas LLC | MC Camey, TX 79752 | Oil Operator | Jul 2025 |
| 18439 | McCammon Oil & Gas, Inc. | San Angelo, TX 76902 | Oil & Gas Operator | Jul 2025 |
| 18440 | McCandless Rober | | Oil & Gas Operator | May 1991 |
| 18441 | McCandlish R L Oil Co Inc | Bremen, OH 43107 | Oil & Gas Operator | Dec 1997 |
| 18442 | McCann Corporation | Midland, TX 79710 | Oil & Gas Operator | Jul 2025 |
| 18443 | McCann Drilling | | Oil & Gas Operator | Oct 1996 |
| 18444 | McCann Drilling, Inc. | Bartlesville, OK 74003 | Oil Operator | Mar 2011 |
| 18445 | McCann Mark Wind | | Oil & Gas Operator | Dec 1994 |
| 18446 | McCann Petroleum, Inc. | Sedan, KS 67361 | Oil & Gas Operator | Jul 1998 |
| 18447 | McCann Resources Inc | | Oil & Gas Operator | Apr 2025 |
| 18448 | McCart Sue | Okmulgee, OK 74447-8580 | Oil & Gas Operator | Nov 2024 |
| 18449 | McCarter, A. Nelson | Houston, TX 77063 | Oil & Gas Operator | Aug 2003 |
| 18450 | McCarter, W. B. Jr. | Houston, TX 77063 | Oil & Gas Operator | Feb 2002 |
| 18451 | McCarter-Greenbrier-Macdonald | | Oil Operator | Sep 1981 |
| 18452 | McCarthy Oil & Gas Corporation | Houston, TX 77056 | Oil & Gas Operator | Oct 2007 |
| 18453 | McCarthy Oil Co. | | Oil Operator | Dec 1998 |
| 18454 | McCarthy Oil Com | | Oil Operator | Jun 1994 |
| 18455 | McCarthy Tim W - | | Oil Operator | Mar 1994 |
| 18456 | McCarthy, Lawrence J. | Plains, MT 59859-9215 | Oil & Gas Operator | Nov 2011 |
| 18457 | McCartney Engineering LLC | Wheat Ridge, CO 80033 | Oil & Gas Operator | May 2025 |
| 18458 | McCarty Francis | | Oil Operator | Sep 1993 |
| 18459 | McCarty, Charles E | Spencer, WV 25276 | Oil & Gas Operator | Dec 2021 |
| 18460 | McCaskey, Jeffrey A. | East Aurora, NY 14052 | Gas Operator | Dec 2024 |
| 18461 | McCasland Management Inc | Hobbs, NM 88240 | Oil & Gas Operator | Aug 2020 |
| 18462 | McCauley Production | Graham, TX 76450 | Oil Operator | Jul 2025 |
| 18463 | McCauley, F. R. | Houston, TX 77002 | Oil & Gas Operator | Apr 2000 |
| 18464 | McChesney Michael & Ayo Joseph R | Pinedale, WY 82941-1282 | Oil Operator | Nov 2019 |
| 18465 | McClain Oil Co | Granville, OH 43023 | Oil & Gas Operator | Dec 1988 |
| 18466 | McCleese Enterprises LLC | Richardson, TX 75082-4839 | Gas Operator | Dec 2017 |
| 18467 | McClellan Oil Corporation | Roswell, NM 882020730 | Oil & Gas Operator | May 2015 |
| 18468 | McClelland Creek Properties,Inc. | Pampa, TX 79066 | Oil & Gas Operator | Jul 2025 |
| 18469 | McClelland Oil - | | Oil Operator | Dec 2009 |
| 18470 | McClelland, C.R. Operations, Inc. | Madison, KS 66860 | Oil Operator | Aug 1998 |
| 18471 | McClintock V C | Casper, WY 82601 | Oil & Gas Operator | May 2024 |
| 18472 | McClintock, Robert T | | Oil & Gas Operator | Apr 2025 |
| 18473 | McClinton & 4-M Invest Inc | | Oil & Gas Operator | Aug 1992 |
| 18474 | McClinton & Mosing | | Oil & Gas Operator | Oct 1977 |
| 18475 | McClure Brothers | Denton, TX 76210 | Oil & Gas Operator | Jul 2025 |
| 18476 | McClure Enterprises | Recluse, WY 82725 | Oil & Gas Operator | Jan 2025 |
| 18477 | McClure M C Oil | | Oil Operator | Jul 1984 |
| 18478 | McClure Oil Company, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jul 2025 |
| 18479 | McClure, J.D. Trust | Denton, TX 76209 | Oil & Gas Operator | Jul 2025 |
| 18480 | McCluskey J Sterling | New York, NY 10128-1008 | Gas Operator | Dec 1989 |
| 18481 | McCluskey Willia | | Oil & Gas Operator | Dec 1990 |
| 18482 | McClymond, B. W. | Breckenridge, TX 76424 | Oil & Gas Operator | Jul 2020 |
| 18483 | McClymond, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Jul 2001 |
| 18484 | McClymond, LTD. | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2009 |
| 18485 | McColl, Francis E. | Le Roy, NY 14482 | Gas Operator | Dec 2024 |
| 18486 | McComb Oil Inc | Stoneboro, PA 16153-3017 | Oil & Gas Operator | Dec 2024 |
| 18487 | McCombs Energy LLC | Houston, TX 77056 | Oil & Gas Operator | Jan 2006 |
| 18488 | McCombs Energy, LTD. | Houston, TX 77056 | Oil & Gas Operator | Aug 2017 |
| 18489 | McCommons Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Jul 2025 |
| 18490 | McConathy & Associates | | Oil & Gas Operator | Dec 1983 |
| 18491 | McConathy Production Co.,Inc. | | Oil & Gas Operator | Jun 1990 |
| 18492 | McConnell And Scully Inc | | Oil & Gas Operator | Jun 2025 |
| 18493 | McConnell Oil Properties | | Oil Operator | Mar 2025 |
| 18494 | McCool John E | Youngsville, PA 16371 | Oil & Gas Operator | May 2025 |
| 18495 | McCord Al Inc | Norman, OK 73072-6720 | Oil & Gas Operator | Feb 2011 |
| 18496 | McCord Exploration Co. | | Oil & Gas Operator | Dec 1990 |
| 18497 | McCord J K | Duncan, OK 73534-0032 | Oil Operator | Mar 2009 |
| 18498 | McCord Oil Co. And T. Walker | | Oil & Gas Operator | Dec 1985 |
| 18499 | McCord-Dale Exploration | | Oil & Gas Operator | May 1986 |
| 18500 | McCord-Goodrich Oil Company | | Oil & Gas Operator | Oct 1991 |