| 1501 | Midsco | Cross Plains, TX 76443 | Oil & Gas Operator | Jul 2025 |
| 1502 | Midstate Employment Services LLC | | Oil Operator | Apr 2024 |
| 1503 | Midstate Energy Inc | | Oil & Gas Operator | Aug 2017 |
| 1504 | Midstate Oil & Gas Company | Shawnee, OK 74801 | Oil & Gas Operator | Apr 2025 |
| 1505 | Midstates Corporation | San Antonio, TX 78217 | Oil & Gas Operator | Jul 2025 |
| 1506 | Midstates Energy Operating, LLC | FT Myers, FL 33912 | Oil Operator | Mar 2025 |
| 1507 | Midstates Oil Company | Oklahoma City, OK 73112 | Oil & Gas Operator | Nov 2000 |
| 1508 | Midstates Petroleum Company LLC | Tulsa, OK 74103 | Oil & Gas Operator | May 2018 |
| 1509 | Midstates Petroleum Corp. | | Oil & Gas Operator | Dec 2008 |
| 1510 | Midville Energy, LLC. | Midland, TX 79705 | Oil & Gas Operator | Jul 2024 |
| 1511 | Midway City Gas Company | Huntington, WV 25701 | Oil & Gas Operator | Dec 2018 |
| 1512 | Midway Drilling | | Oil & Gas Operator | Dec 1996 |
| 1513 | Midway Drilling Co. | Richmond, TX 77469 | Oil & Gas Operator | Jul 2025 |
| 1514 | Midway Energy, LLC | Thermopolis, WY 82443 | Oil Operator | Apr 2025 |
| 1515 | Midway Leasing Inc | Haskell, OK 74436-2406 | Oil & Gas Operator | Jan 2024 |
| 1516 | Midway Operating Co. | Great Bend, KS 67530 | Oil Operator | Jan 1998 |
| 1517 | Midway Operating Company, L.L.C. | Woodward, OK 73802 | Oil & Gas Operator | Jul 2025 |
| 1518 | Midway Production Co. | | Gas Operator | May 1990 |
| 1519 | Midway Terrel Operating Co | | Oil & Gas Operator | Dec 1999 |
| 1520 | Midway Testing Company Inc | | Gas Operator | Mar 1984 |
| 1521 | Midway-Sunset Investors LLC | | Oil & Gas Operator | May 2025 |
| 1522 | Midwest Energy Companies, Inc. | | Oil & Gas Operator | Feb 1998 |
| 1523 | Midwest Energy Corporation | Tulsa, OK 74105-6083 | Oil & Gas Operator | Aug 2016 |
| 1524 | Midwest Enterprises, Inc. | Cashion, OK 73016-9626 | Oil & Gas Operator | Apr 2025 |
| 1525 | Midwest Eor Inc | Tulsa, OK 74105-6059 | Oil & Gas Operator | May 2013 |
| 1526 | Midwest Exploration Inc | Villa Park, IL 60181 | Oil & Gas Operator | Dec 1990 |
| 1527 | Midwest Oil & Gas | Columbus, OH 43220-1836 | Oil & Gas Operator | Dec 2021 |
| 1528 | Midwest Oil Company | Beggs, OK 74421-2976 | Oil Operator | Apr 2015 |
| 1529 | Midwest Oil, LLC | Destin, FL 32541 | Oil Operator | Aug 2024 |
| 1530 | Midwest Operating Company Inc | Tulsa, OK 74105-6059 | Oil & Gas Operator | Nov 1999 |
| 1531 | Midwest Pipe & Supply Company | Oklahoma City, OK 73154-0245 | Oil & Gas Operator | Dec 2008 |
| 1532 | Midwest Radiant Oil & Gas Co | | Oil Operator | Dec 2020 |
| 1533 | Midwest Turf | El Dorado, KS 67042 | Oil Operator | Jun 1998 |
| 1534 | Midwestern Energy | Mankato, MN 56003 | Oil & Gas Operator | Jul 2025 |
| 1535 | Midwestern Exploration Co. | Edmond, OK 73013 | Oil & Gas Operator | Mar 2025 |
| 1536 | Midwestern Oil C | | Oil & Gas Operator | May 1995 |
| 1537 | Midwestern Suppl | | Oil Operator | Oct 1986 |
| 1538 | Mieka LLC | Flower Mound, TX 75028-7446 | Oil & Gas Operator | Dec 2014 |
| 1539 | Miesch Exploration Corporation | Dallas, TX 75229 | Oil & Gas Operator | Nov 2002 |
| 1540 | Migwis | Great Bend, KS 67530 | Oil Operator | Mar 1988 |
| 1541 | Migwis Operating LLC | Cushing, OK 74023-4854 | Oil & Gas Operator | Oct 2020 |
| 1542 | Mihalik Paul | Madison, OH 44057 | Oil & Gas Operator | Dec 2023 |
| 1543 | Mija LLC | Oklahoma City, OK 73151 | Oil & Gas Operator | May 2025 |
| 1544 | Mikal R Brown Oil LLC | Cleveland, OK 74020-6475 | Oil Operator | Dec 2022 |
| 1545 | Mikarden Energy Inc | Sapulpa, OK 74066 | Oil Operator | Apr 2025 |
| 1546 | Mikco Inc | Tulsa, OK 74133 | Oil & Gas Operator | May 2001 |
| 1547 | Mike Blaes & Peggy Blaes, A General Partnership | Cherryvale, KS 67335 | Oil Operator | Mar 2025 |
| 1548 | Mike Bonner | | Oil Operator | Aug 1999 |
| 1549 | Mike Kelso Oil, Inc. | Chase, KS 67524 | Oil & Gas Operator | Mar 2025 |
| 1550 | Mike Oil LLC | Colorado City, TX 79512 | Oil Operator | Jul 2025 |
| 1551 | Miken Oil, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Jul 2025 |
| 1552 | Mikeska Stock Farm | San Angelo, TX 76904 | Oil & Gas Operator | Sep 2024 |
| 1553 | Mikol Oil LLC | Hays, KS 67601 | Oil Operator | Mar 2025 |
| 1554 | Mil-Cro Inc. | | Oil Operator | Jan 1994 |
| 1555 | Milagro Exploration, LLC | Houston, TX 77010 | Oil & Gas Operator | Aug 2018 |
| 1556 | Milam Oil Corp Dba Milam Construction | El Dorado, AR 71730 | Oil & Gas Operator | Dec 2024 |
| 1557 | Milam, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Jul 2025 |
| 1558 | Milburn R Kenneth | Ardmore, OK 73402-1118 | Oil & Gas Operator | Sep 2014 |
| 1559 | Milburn Robert G | Countyline, OK 73025 | Oil Operator | Apr 2020 |
| 1560 | Milburn, Harold J. | Hutchinson, KS 67502 | Oil & Gas Operator | Sep 2003 |
| 1561 | Mild Oil Company | Duncan, OK 73533-9532 | Oil Operator | Mar 2000 |
| 1562 | Miles Oil & Gas Co. | | Oil & Gas Operator | Feb 1988 |
| 1563 | Miles Production Co. | Argyle, TX 76226 | Oil & Gas Operator | Mar 2008 |
| 1564 | Milestone Operating, Inc. | Montgomery, TX 77316 | Oil & Gas Operator | Jul 2025 |
| 1565 | Milestone Pet/El Paso Expl | | Oil & Gas Operator | Jul 1985 |
| 1566 | Miley Gas Company | Sarahsville, OH 43779 | Gas Operator | Dec 2023 |
| 1567 | Milford Oil Co | Tatum, NM 88267 | Oil & Gas Operator | Feb 1995 |
| 1568 | Milhoan, Douglas L And Janet L | Belleville, WV 26133 | Gas Operator | Dec 2021 |
| 1569 | Millennium Exploration Co. LLC | San Antonio, TX 78232 | Oil & Gas Operator | Jul 2025 |
| 1570 | Millennium Minerals Corporation | Fredericksbrg, TX 78624 | Oil Operator | Jul 2025 |
| 1571 | Millennium Offshore Group, Inc. | Houston, TX 77007 | Oil & Gas Operator | Sep 2005 |
| 1572 | Millennium Oil & Gas Inc | Dexter, KS 67038 | Oil & Gas Operator | Dec 2024 |
| 1573 | Millennium Oil & Gas LLC | Denver, CO 80203 | Oil & Gas Operator | Apr 2025 |
| 1574 | Millennium Operating Company | Houston, TX 77057 | Oil & Gas Operator | Jul 2025 |
| 1575 | Millennium Petro-Physics, Inc. | Corpus Chrsti, TX 78480 | Oil & Gas Operator | Jul 2025 |
| 1576 | Millennium Resources, LLC. | Big Lake, TX 76932 | Oil & Gas Operator | Sep 2012 |
| 1577 | Millennium Resources, LP | Midland, TX 79708 | Oil Operator | Jul 2025 |
| 1578 | Miller & Stanley Oper Co | Amarillo, TX 79114 | Oil & Gas Operator | Sep 2014 |
| 1579 | Miller B Investments | Tulsa, OK 74170 | Oil & Gas Operator | Nov 2007 |
| 1580 | Miller Bros Oil Company, Inc. | Burlington, KS 66839 | Oil Operator | Dec 2009 |
| 1581 | Miller Brothers | | Oil & Gas Operator | Nov 2000 |
| 1582 | Miller Brothers And Federal Oil Co | | Oil Operator | May 1984 |
| 1583 | Miller Brothers And Total Petroleum And Wiser Oil | | Oil & Gas Operator | Sep 1991 |
| 1584 | Miller Energy Company II LLC | | Oil & Gas Operator | May 2025 |
| 1585 | Miller Energy Inc | Houston, TX 77024 | Oil & Gas Operator | Oct 2016 |
| 1586 | Miller Energy Technologies, LLC | Lexington, KY 40509 | Oil Operator | Dec 2023 |
| 1587 | Miller Energy, LLC | Garnett, KS 66032 | Oil Operator | Nov 2019 |
| 1588 | Miller Exploration Company | Tulsa, OK 74136-1020 | Oil & Gas Operator | Mar 2015 |
| 1589 | Miller I O Incor | | Oil & Gas Operator | Apr 1991 |
| 1590 | Miller Joe B | Lawton, OK 73507 | Oil Operator | Mar 2025 |
| 1591 | Miller John Production | Bristow, OK 74010-2455 | Oil & Gas Operator | Jul 2016 |
| 1592 | Miller Oil & Gas | Dundee, OH 44624-9629 | Oil & Gas Operator | Dec 1998 |
| 1593 | Miller Oil & Gas Assets III, LLC | Englewood, CO 80155 | Oil & Gas Operator | May 2012 |
| 1594 | Miller Oil & Gas Co | Okmulgee, OK 74447 | Oil & Gas Operator | Oct 2017 |
| 1595 | Miller Oil & Gas, LLC | Snyder, TX 79549 | Oil & Gas Operator | Jul 2025 |
| 1596 | Miller Oil Company | Corsicana, TX 75110 | Oil & Gas Operator | Dec 2015 |
| 1597 | Miller Oil Company, LLC | Chanute, KS 66720 | Oil Operator | Jul 2024 |
| 1598 | Miller Oil Field Services, Inc | | Oil Operator | Feb 1990 |
| 1599 | Miller Operating Company LLC | Lafayette, LA 70598 | Oil & Gas Operator | Jul 2025 |
| 1600 | Miller Petroleum Company | Yukon, OK 73099-0452 | Oil & Gas Operator | Aug 2009 |