| 1501 | Midcoast G & P (East Texas) L.P. | Houston, TX 77002 | Oil & Gas Operator | Apr 2025 |
| 1502 | Midcoast Resources Co | Tulsa, OK 74136 | Oil & Gas Operator | Dec 1992 |
| 1503 | Midcon Offshore, Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2008 |
| 1504 | Midcontinent Acquisition Properties, Inc. | Oklahoma City, OK 73102 | Gas Operator | Jan 2000 |
| 1505 | Midcontinent Oil & Gas Company | Phoenix, AZ 85022-6180 | Oil & Gas Operator | Jun 2012 |
| 1506 | Middle Bay Oil Company, Inc. | Houston, TX 77002 | Oil & Gas Operator | Apr 1998 |
| 1507 | Middle Bay Production Co. Inc. | Houston, TX 77010 | Oil & Gas Operator | Sep 2014 |
| 1508 | Middle Fork Energy Uinta, LLC | Denver, CO 80202 | Oil & Gas Operator | Dec 2024 |
| 1509 | Middleton Oil Company | Houston, TX 77006 | Oil & Gas Operator | Apr 2025 |
| 1510 | Mideast Gas Systems, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2005 |
| 1511 | Midenergy Operating, LLC | Houston, TX 77024 | Oil & Gas Operator | Apr 2025 |
| 1512 | Midgard Energy Company | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2014 |
| 1513 | Midkiff, John | Midland, TX 79705 | Oil & Gas Operator | Mar 2008 |
| 1514 | Midla, LTD. | | Oil & Gas Operator | Jun 1990 |
| 1515 | Midland Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 1516 | Midland Oil And Gas, Inc. | Midland, TX 79705 | Oil & Gas Operator | Apr 2025 |
| 1517 | Midland Oil Co | Brownsville, OH 43721 | Oil & Gas Operator | Dec 2000 |
| 1518 | Midland Operating, Inc. | Midland, TX 79710 | Oil & Gas Operator | Dec 2024 |
| 1519 | Midland Res. Oper. Co., Inc. | Midland, TX 79701 | Oil & Gas Operator | Oct 1998 |
| 1520 | Midland Southwest Cold Lake Inc | Midland, TX 79702 | Oil & Gas Operator | Jun 1997 |
| 1521 | Midland TMG Inc. | Midland, TX 79705 | Oil & Gas Operator | Apr 2017 |
| 1522 | Midland Workover, Inc. | | Oil & Gas Operator | Dec 2024 |
| 1523 | Midlands Gas Cor | | Gas Operator | Dec 1996 |
| 1524 | Midnight Drilling LLC | | Oil & Gas Operator | Jan 2016 |
| 1525 | Midnight Energy Operating LLC | Drumright, OK 74030 | Oil Operator | Jan 2025 |
| 1526 | Midnight Hour LLC | Enid, OK 73702 | Oil & Gas Operator | Apr 2020 |
| 1527 | Midnight Well Se | | Oil Operator | Sep 1994 |
| 1528 | Midnite Oil Co. | Wichita Falls, TX 76310 | Oil & Gas Operator | Apr 2025 |
| 1529 | Midpar L.P. | Midland, TX 79702 | Oil & Gas Operator | Feb 1995 |
| 1530 | Midroc Oil Company Et Al | | Oil Operator | Nov 1984 |
| 1531 | Midroc Operating Co. & Watkins, H. Vaughan, Jr. | | Oil & Gas Operator | Feb 2010 |
| 1532 | Midroc Operating Co. & Watkins, H. Vaughan, Jr. & Placid Oil Co. | | Oil & Gas Operator | May 1991 |
| 1533 | Midroc Operating Company | | Oil & Gas Operator | Apr 2013 |
| 1534 | Midsco | Cross Plains, TX 76443 | Oil & Gas Operator | Apr 2025 |
| 1535 | Midstate Employment Services LLC | | Oil Operator | Apr 2024 |
| 1536 | Midstate Energy Inc | | Oil & Gas Operator | Aug 2017 |
| 1537 | Midstate Oil & Gas Company | Shawnee, OK 74801 | Oil & Gas Operator | Jan 2025 |
| 1538 | Midstates Corporation | San Antonio, TX 78217 | Oil & Gas Operator | Apr 2025 |
| 1539 | Midstates Energy Operating, LLC | FT Myers, FL 33912 | Oil Operator | Nov 2024 |
| 1540 | Midstates Oil Company | Oklahoma City, OK 73112 | Oil & Gas Operator | Nov 2000 |
| 1541 | Midstates Petroleum Company LLC | Tulsa, OK 74103 | Oil & Gas Operator | May 2018 |
| 1542 | Midstates Petroleum Corp. | | Oil & Gas Operator | Dec 2008 |
| 1543 | Midville Energy, LLC. | Midland, TX 79705 | Oil & Gas Operator | Jul 2024 |
| 1544 | Midway City Gas Company | Huntington, WV 25701 | Oil & Gas Operator | Dec 2018 |
| 1545 | Midway Drilling | | Oil & Gas Operator | Dec 1996 |
| 1546 | Midway Drilling Co. | Richmond, TX 77469 | Oil & Gas Operator | Apr 2025 |
| 1547 | Midway Energy, LLC | Thermopolis, WY 82443 | Oil Operator | Dec 2024 |
| 1548 | Midway Leasing Inc | Haskell, OK 74436-2406 | Oil & Gas Operator | Jan 2024 |
| 1549 | Midway Operating Co. | Great Bend, KS 67530 | Oil Operator | Jan 1998 |
| 1550 | Midway Operating Company, L.L.C. | Woodward, OK 73802 | Oil & Gas Operator | Apr 2025 |
| 1551 | Midway Production Co. | | Gas Operator | May 1990 |
| 1552 | Midway Terrel Operating Co | | Oil & Gas Operator | Dec 1999 |
| 1553 | Midway Testing Company Inc | | Gas Operator | Mar 1984 |
| 1554 | Midway-Sunset Investors LLC | | Oil & Gas Operator | Dec 2024 |
| 1555 | Midwest Energy Companies, Inc. | | Oil & Gas Operator | Feb 1998 |
| 1556 | Midwest Energy Corporation | Tulsa, OK 74105-6083 | Oil & Gas Operator | Aug 2016 |
| 1557 | Midwest Enterprises, Inc. | Cashion, OK 73016-9626 | Oil & Gas Operator | Jan 2025 |
| 1558 | Midwest Eor Inc | Tulsa, OK 74105-6059 | Oil & Gas Operator | May 2013 |
| 1559 | Midwest Exploration Inc | Villa Park, IL 60181 | Oil & Gas Operator | Dec 1990 |
| 1560 | Midwest Oil & Gas | Columbus, OH 43220-1836-1836 | Oil & Gas Operator | Dec 2021 |
| 1561 | Midwest Oil Company | Beggs, OK 74421-2976 | Oil Operator | Apr 2015 |
| 1562 | Midwest Oil, LLC | Destin, FL 32541 | Oil Operator | Aug 2024 |
| 1563 | Midwest Operating Company Inc | Tulsa, OK 74105-6059 | Oil & Gas Operator | Nov 1999 |
| 1564 | Midwest Pipe & Supply Company | Oklahoma City, OK 73154-0245 | Oil & Gas Operator | Dec 2008 |
| 1565 | Midwest Radiant Oil & Gas Co | | Oil Operator | Dec 2021 |
| 1566 | Midwest Turf | El Dorado, KS 67042 | Oil Operator | Jun 1998 |
| 1567 | Midwestern Energy | Mankato, MN 56003 | Oil & Gas Operator | Apr 2025 |
| 1568 | Midwestern Exploration Co. | Edmond, OK 73013 | Oil & Gas Operator | Dec 2024 |
| 1569 | Midwestern Oil C | | Oil & Gas Operator | May 1995 |
| 1570 | Midwestern Suppl | | Oil Operator | Oct 1986 |
| 1571 | Mieka LLC | Flower Mound, TX 75028-7446 | Oil & Gas Operator | Dec 2014 |
| 1572 | Miesch Exploration Corporation | Dallas, TX 75229 | Oil & Gas Operator | Nov 2002 |
| 1573 | Migwis | Great Bend, KS 67530 | Oil Operator | Mar 1988 |
| 1574 | Migwis Operating LLC | Cushing, OK 74023-4854 | Oil & Gas Operator | Oct 2020 |
| 1575 | Mihalik Paul | Madison, OH 44057 | Oil & Gas Operator | Dec 2023 |
| 1576 | Mija LLC | Edmond, OK 73034 | Oil & Gas Operator | Feb 2025 |
| 1577 | Mikal R Brown Oil LLC | Cleveland, OK 74020-6475 | Oil Operator | Dec 2022 |
| 1578 | Mikarden Energy Inc | Sapulpa, OK 74066 | Oil Operator | Jan 2025 |
| 1579 | Mikco Inc | Tulsa, OK 74133 | Oil & Gas Operator | May 2001 |
| 1580 | Mike Blaes & Peggy Blaes, A General Partnership | Cherryvale, KS 67335 | Oil Operator | Dec 2023 |
| 1581 | Mike Bonner | | Oil Operator | Aug 1999 |
| 1582 | Mike Kelso Oil, Inc. | Chase, KS 67524 | Oil & Gas Operator | Dec 2024 |
| 1583 | Mike Oil LLC | Colorado City, TX 79512 | Oil Operator | Apr 2025 |
| 1584 | Miken Oil, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2025 |
| 1585 | Mikeska Stock Farm | San Angelo, TX 76904 | Oil & Gas Operator | Sep 2024 |
| 1586 | Mikol Oil LLC | Hays, KS 67601 | Oil Operator | Dec 2024 |
| 1587 | Mil-Cro Inc. | | Oil Operator | Jan 1994 |
| 1588 | Milagro Exploration, LLC | Houston, TX 77010 | Oil & Gas Operator | Aug 2018 |
| 1589 | Milam Oil Corp Dba Milam Construction | El Dorado, AR 71730 | Oil & Gas Operator | Oct 2024 |
| 1590 | Milam, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2025 |
| 1591 | Milburn R Kenneth | Ardmore, OK 73402-1118 | Oil & Gas Operator | Sep 2014 |
| 1592 | Milburn Robert G | Countyline, OK 73025 | Oil Operator | Apr 2020 |
| 1593 | Milburn, Harold J. | Hutchinson, KS 67502 | Oil & Gas Operator | Sep 2003 |
| 1594 | Mild Oil Company | Duncan, OK 73533-9532 | Oil Operator | Mar 2000 |
| 1595 | Miles Oil & Gas Co. | | Oil & Gas Operator | Feb 1988 |
| 1596 | Miles Production Co. | Argyle, TX 76226 | Oil & Gas Operator | Mar 2008 |
| 1597 | Milestone Operating, Inc. | Montgomery, TX 77316 | Oil & Gas Operator | Apr 2025 |
| 1598 | Milestone Pet/El Paso Expl | | Oil & Gas Operator | Jul 1985 |
| 1599 | Miley Gas Company | Sarahsville, OH 43779 | Gas Operator | Dec 2023 |
| 1600 | Milford Oil Co | Tatum, NM 88267 | Oil & Gas Operator | Feb 1995 |