| 18701 | Mid-America Resources Corporation | | Oil Operator | Jan 2019 |
| 18702 | Mid-America Resources, Inc. | | Oil & Gas Operator | Feb 2008 |
| 18703 | Mid-America/Hughes & Hughes | | Oil Operator | Jul 1984 |
| 18704 | Mid-American Hyd | | Oil & Gas Operator | Jan 1992 |
| 18705 | Mid-Con Central Expl Co | Tulsa, OK 74136 | Oil & Gas Operator | Aug 2014 |
| 18706 | Mid-Con Energy Operating, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | May 2020 |
| 18707 | Mid-Con Energy Operating, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Jul 2026 |
| 18708 | Mid-Con Petroleum Co Inc | Heath, OH 43056 | Oil & Gas Operator | Dec 2010 |
| 18709 | Mid-Continent En | | Oil & Gas Operator | Nov 1995 |
| 18710 | Mid-Continent Energy Corp. | Wichita, KS 67208 | Oil & Gas Operator | Apr 2026 |
| 18711 | Mid-Continent Energy Operating | | Gas Operator | Aug 2007 |
| 18712 | Mid-Continent Energy Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2026 |
| 18713 | Mid-Continent Energy, Inc. | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2020 |
| 18714 | Mid-Continent Petroleum Management Inc | Cement, OK 73017 | Oil & Gas Operator | Jun 2026 |
| 18715 | Mid-Continent Re | | Oil & Gas Operator | Jan 1993 |
| 18716 | Mid-Continental Exploration,Inc. | Sanger, TX 76266 | Oil & Gas Operator | Sep 2026 |
| 18717 | Mid-Eastern Oil & Gas Co. | | Oil & Gas Operator | Dec 2021 |
| 18718 | Mid-Gulf, Inc. | Brenham, TX 77834 | Oil & Gas Operator | Mar 2008 |
| 18719 | Mid-National Resources Inc. | | Oil Operator | Feb 1999 |
| 18720 | Mid-South Trading, Inc. | | Oil & Gas Operator | Jan 2025 |
| 18721 | Mid-States Operating Company | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |
| 18722 | Mid-Tex Energy Inc. | Costa Mesa, CA 92626 | Oil & Gas Operator | Jan 1999 |
| 18723 | Mid-Tex Operating, Inc. | Austin, TX 78748 | Oil & Gas Operator | Sep 2026 |
| 18724 | Mid-Tex Resources | Merkel, TX 79536 | Oil & Gas Operator | Feb 2001 |
| 18725 | Mid-Way Environmental Services Inc | Stroud, OK 74079 | Oil Operator | Apr 2025 |
| 18726 | Midas Resources, Inc. | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Sep 2026 |
| 18727 | Midco Energy, Inc. | | Oil & Gas Operator | Dec 1992 |
| 18728 | Midco Exploration, Inc. | Westmont, IL 60559 | Oil & Gas Operator | Apr 2026 |
| 18729 | Midcoast G & P (East Texas) L.P. | Houston, TX 77002 | Oil & Gas Operator | Sep 2026 |
| 18730 | Midcoast Resources Co | Tulsa, OK 74136 | Oil & Gas Operator | Dec 1992 |
| 18731 | Midcon Offshore, Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2008 |
| 18732 | Midcontinent Acquisition Properties, Inc. | Oklahoma City, OK 73102 | Gas Operator | Jan 2000 |
| 18733 | Midcontinent Oil & Gas Company | Phoenix, AZ 85022-6180 | Oil & Gas Operator | Jun 2012 |
| 18734 | Middle Bay Oil Company, Inc. | Houston, TX 77002 | Oil & Gas Operator | Apr 1998 |
| 18735 | Middle Bay Production Co. Inc. | Houston, TX 77010 | Oil & Gas Operator | Sep 2014 |
| 18736 | Middleton Oil Company | Houston, TX 77006 | Oil & Gas Operator | Sep 2026 |
| 18737 | Mideast Gas Systems, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2005 |
| 18738 | Midenergy Operating, LLC | Houston, TX 77024 | Oil & Gas Operator | Sep 2026 |
| 18739 | Midgard Energy Company | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2014 |
| 18740 | Midkiff, John | Midland, TX 79705 | Oil & Gas Operator | Mar 2008 |
| 18741 | Midla, LTD. | | Oil & Gas Operator | Jun 1990 |
| 18742 | Midland Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |
| 18743 | Midland Oil And Gas, Inc. | Midland, TX 79705 | Oil & Gas Operator | Sep 2026 |
| 18744 | Midland Oil Co | Brownsville, OH 43721 | Oil & Gas Operator | Dec 2000 |
| 18745 | Midland Operating, Inc. | Midland, TX 79710 | Oil & Gas Operator | May 2026 |
| 18746 | Midland Res. Oper. Co., Inc. | Midland, TX 79701 | Oil & Gas Operator | Oct 1998 |
| 18747 | Midland Southwest Cold Lake Inc | Midland, TX 79702 | Oil & Gas Operator | Jun 1997 |
| 18748 | Midland TMG Inc. | Midland, TX 79705 | Oil & Gas Operator | Apr 2017 |
| 18749 | Midland Workover, Inc. | | Oil & Gas Operator | Dec 2024 |
| 18750 | Midlands Gas Cor | | Gas Operator | Dec 1996 |
| 18751 | Midnight Drilling LLC | | Oil & Gas Operator | Jan 2016 |
| 18752 | Midnight Energy Operating LLC | Sand Springs, OK 74063 | Oil Operator | Jun 2026 |
| 18753 | Midnight Hour LLC | Enid, OK 73702 | Oil & Gas Operator | Apr 2020 |
| 18754 | Midnight Well Se | | Oil Operator | Sep 1994 |
| 18755 | Midnite Oil Co. | Wichita Falls, TX 76310 | Oil & Gas Operator | Sep 2026 |
| 18756 | Midpar L.P. | Midland, TX 79702 | Oil & Gas Operator | Feb 1995 |
| 18757 | Midroc Oil Company Et Al | | Oil Operator | Nov 1984 |
| 18758 | Midroc Operating Co. & Watkins, H. Vaughan, Jr. | | Oil & Gas Operator | Feb 2010 |
| 18759 | Midroc Operating Co. & Watkins, H. Vaughan, Jr. & Placid Oil Co. | | Oil & Gas Operator | May 1991 |
| 18760 | Midroc Operating Company | | Oil & Gas Operator | Apr 2013 |
| 18761 | Midsco | Cross Plains, TX 76443 | Oil & Gas Operator | Sep 2026 |
| 18762 | Midstar Energy Corporation | Spring, TX 77379 | Oil Operator | Sep 2026 |
| 18763 | Midstate Employment Services LLC | | Oil Operator | Apr 2024 |
| 18764 | Midstate Energy Inc | | Oil & Gas Operator | Aug 2017 |
| 18765 | Midstate Oil & Gas Company | Shawnee, OK 74801 | Oil & Gas Operator | May 2026 |
| 18766 | Midstates Corporation | San Antonio, TX 78217 | Oil & Gas Operator | Sep 2026 |
| 18767 | Midstates Energy Operating, LLC | FT Myers, FL 33912 | Oil Operator | Apr 2026 |
| 18768 | Midstates Oil Company | Oklahoma City, OK 73112 | Oil & Gas Operator | Nov 2000 |
| 18769 | Midstates Petroleum Company LLC | Tulsa, OK 74103 | Oil & Gas Operator | May 2018 |
| 18770 | Midstates Petroleum Corp. | | Oil & Gas Operator | Dec 2008 |
| 18771 | Midville Energy, LLC. | Midland, TX 79705 | Oil & Gas Operator | Jul 2024 |
| 18772 | Midway City Gas Company | Huntington, WV 25701 | Oil & Gas Operator | Dec 2018 |
| 18773 | Midway Drilling | | Oil & Gas Operator | Dec 1996 |
| 18774 | Midway Drilling Co. | Richmond, TX 77469 | Oil & Gas Operator | Sep 2026 |
| 18775 | Midway Energy Partners Operating LLC | Midland, TX 79701 | Oil & Gas Operator | Sep 2026 |
| 18776 | Midway Energy, LLC | Thermopolis, WY 82443 | Oil Operator | Jun 2026 |
| 18777 | Midway Leasing Inc | Haskell, OK 74436-2406 | Oil & Gas Operator | Jan 2024 |
| 18778 | Midway Operating Co. | Great Bend, KS 67530 | Oil Operator | Jan 1998 |
| 18779 | Midway Operating Company, L.L.C. | Woodward, OK 73802 | Oil & Gas Operator | Sep 2026 |
| 18780 | Midway Production Co. | | Gas Operator | May 1990 |
| 18781 | Midway Terrel Operating Co | | Oil & Gas Operator | Dec 1999 |
| 18782 | Midway-Sunset Investors LLC | | Oil & Gas Operator | Jul 2026 |
| 18783 | Midwest Energy Companies, Inc. | | Oil & Gas Operator | Feb 1998 |
| 18784 | Midwest Energy Corporation | Tulsa, OK 74105-6083 | Oil & Gas Operator | Aug 2016 |
| 18785 | Midwest Enterprises Inc | Cashion, OK 73016-9626 | Oil & Gas Operator | Apr 2025 |
| 18786 | Midwest Eor Inc | Tulsa, OK 74105-6059 | Oil & Gas Operator | May 2013 |
| 18787 | Midwest Exploration Inc | Villa Park, IL 60181 | Oil & Gas Operator | Dec 1990 |
| 18788 | Midwest Oil & Gas | Columbus, OH 43220-1836 | Oil & Gas Operator | Dec 2021 |
| 18789 | Midwest Oil Company | Beggs, OK 74421-2976 | Oil Operator | Apr 2015 |
| 18790 | Midwest Oil, LLC | Destin, FL 32541 | Oil Operator | Sep 2025 |
| 18791 | Midwest Operating Company Inc | Tulsa, OK 74105-6059 | Oil & Gas Operator | Nov 1999 |
| 18792 | Midwest Pipe & Supply Company | Oklahoma City, OK 73154-0245 | Oil & Gas Operator | Dec 2008 |
| 18793 | Midwest Radiant Oil & Gas Co | | Oil Operator | Dec 2014 |
| 18794 | Midwest Turf | El Dorado, KS 67042 | Oil Operator | Jun 1998 |
| 18795 | Midwestern Energy | Mankato, MN 56003 | Oil & Gas Operator | Sep 2026 |
| 18796 | Midwestern Exploration Company | Edmond, OK 73013 | Oil & Gas Operator | May 2025 |
| 18797 | Midwestern Oil C | | Oil & Gas Operator | May 1995 |
| 18798 | Midwestern Suppl | | Oil Operator | Oct 1986 |
| 18799 | Mieka LLC | Flower Mound, TX 75028-7446 | Oil & Gas Operator | Dec 2014 |
| 18800 | Miesch Exploration Corporation | Dallas, TX 75229 | Oil & Gas Operator | Nov 2002 |