| 3701 | Eureka Gas Co, Inc | Pikeville, KY 41502 | Gas Operator | Dec 2010 |
| 3702 | Eureka Prospecting Company | Wimberley, TX 78676 | Oil & Gas Operator | Jun 2023 |
| 3703 | European-Southwest Co. | Houston, TX 77254 | Oil & Gas Operator | Apr 2025 |
| 3704 | Eurotex Royalty, Inc. | Arlington, TX 76012 | Oil & Gas Operator | Aug 2003 |
| 3705 | Eurovest Oil & Gas, Inc. | Graham, TX 76450 | Oil & Gas Operator | Mar 2008 |
| 3706 | Ev Fleming Enterprises, LLC | Kilgore, TX 75662 | Oil & Gas Operator | Aug 2024 |
| 3707 | Evangeline Trading Company | Ballinger, TX 76821 | Oil & Gas Operator | Apr 2025 |
| 3708 | Evans Production Co. | Pampa, TX 79066 | Oil & Gas Operator | Sep 2020 |
| 3709 | Evans, Carl N. | Graham, TX 76450 | Oil & Gas Operator | Feb 2001 |
| 3710 | Evans, Julian | Houston, TX 77024 | Oil & Gas Operator | Nov 1995 |
| 3711 | Evans, Ralph | San Antonio, TX 78209 | Oil & Gas Operator | Jan 2011 |
| 3712 | Evans, S. Lavon Jr. Oper. Co. | Laurel, MS 39442 | Oil & Gas Operator | Apr 2025 |
| 3713 | Evantech Energy Corp. | Fort Worth, TX 76120 | Oil & Gas Operator | Apr 1995 |
| 3714 | Evarado Oil Company | Strawn, TX 76475 | Oil & Gas Operator | Apr 2025 |
| 3715 | Evarado Oil, LLC | Strawn, TX 76475 | Oil & Gas Operator | Apr 2025 |
| 3716 | Everest Minerals Corp. | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Apr 2001 |
| 3717 | Everest Network LLC | Eastland, TX 76448 | Oil & Gas Operator | Apr 2025 |
| 3718 | Everest Resource Company | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Apr 2025 |
| 3719 | Everett Oil | San Antonio, TX 78258 | Oil & Gas Operator | Apr 2015 |
| 3720 | Everett Oil, Inc. | San Antonio, TX 78258 | Oil Operator | Apr 2025 |
| 3721 | Everett, Joe Mack | Throckmorton, TX 76483 | Oil & Gas Operator | Apr 2025 |
| 3722 | Evergreen Energy, Inc | Houston, TX 77098 | Oil & Gas Operator | Apr 2025 |
| 3723 | Evergreen Operating Co., LTD. | McAllen, TX 78502 | Oil & Gas Operator | Apr 2025 |
| 3724 | Evergreen Operating Corp | Denver, CO 80202 | Oil & Gas Operator | Dec 2019 |
| 3725 | Everquest Energy Corporation | Fredericksbrg, TX 78624 | Oil & Gas Operator | Apr 2025 |
| 3726 | Evinger, Ernest E. | Midland, TX 79705 | Oil & Gas Operator | Mar 2002 |
| 3727 | Evolution Operating Co., Inc. | Houston, TX 77079 | Oil & Gas Operator | Apr 2025 |
| 3728 | Evolution Resources, LLC | Houston, TX 77070 | Oil & Gas Operator | Apr 2025 |
| 3729 | Ewt Operating Company | Andrews, TX 79714 | Oil & Gas Operator | Apr 2025 |
| 3730 | Ex-Cel Resources, LLC | Breckenridge, TX 76424 | Oil & Gas Operator | Apr 2025 |
| 3731 | Exaro Energy II, LLC | Houston, TX 77057 | Oil & Gas Operator | Apr 2025 |
| 3732 | Excalibur E & P, LLC | Johnson City, TX 78636 | Oil & Gas Operator | Apr 2025 |
| 3733 | Exceed Petroleum LLC | Houston, TX 77070 | Oil & Gas Operator | Apr 2025 |
| 3734 | Excel Energy Co. | Coahoma, TX 79511 | Oil & Gas Operator | Apr 2025 |
| 3735 | Excel Energy, Inc. | Cisco, TX 76437 | Oil & Gas Operator | Apr 2025 |
| 3736 | Excel Oil & Gas, Inc. | Waxahachie, TX 75168 | Oil & Gas Operator | Apr 2025 |
| 3737 | Excelco Energy Inc. | Kingwood, TX 77339 | Oil & Gas Operator | Jul 2018 |
| 3738 | Exchange Avenue Production Co. | Weatherford, TX 76086 | Oil & Gas Operator | Sep 2021 |
| 3739 | Exchange Exploration & Production Co. | Dallas, TX 75219 | Oil & Gas Operator | Jan 2025 |
| 3740 | Exchange Oil & Gas Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Oct 1987 |
| 3741 | Exco Operating Company, LP | Dallas, TX 75251 | Oil & Gas Operator | Apr 2025 |
| 3742 | Exco Partners Operating PTSHP LP | Dallas, TX 75251 | Oil & Gas Operator | Jan 2009 |
| 3743 | Exco Production Company, LP | Dallas, TX 75251 | Oil & Gas Operator | Dec 2009 |
| 3744 | Exco Resources Inc | Dallas, TX 75251 | Oil & Gas Operator | Dec 2024 |
| 3745 | Exco/Hgi JV Assets, LLC | Dallas, TX 75251 | Oil & Gas Operator | Jun 2014 |
| 3746 | Executive Production, Inc. | Tyler, TX 75713 | Oil & Gas Operator | Apr 2025 |
| 3747 | Exit Oil & Gas | Flower Mound, TX 75028 | Oil & Gas Operator | Apr 2025 |
| 3748 | Exl Petroleum Operating Inc. | Midland, TX 79705 | Oil & Gas Operator | Feb 2020 |
| 3749 | Exl Petroleum, LP | Midland, TX 79705 | Oil & Gas Operator | Jun 2017 |
| 3750 | Exlco, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2025 |
| 3751 | Exmoor Oil & Minerals Corp. | Dallas, TX 75225 | Oil & Gas Operator | May 1994 |
| 3752 | Exok, Inc. | Oklahoma City, OK 73116 | Oil & Gas Operator | Dec 2024 |
| 3753 | Exorare Energy, Inc. | Dallas, TX 75218 | Oil & Gas Operator | Apr 2025 |
| 3754 | Exotic Oil & Gas LLC | Indiana, PA 15701-3634 | Oil & Gas Operator | Dec 2024 |
| 3755 | Exp, Inc. | Dallas, TX 75244 | Oil & Gas Operator | May 2003 |
| 3756 | Expanding Energy Corporation | New Braunfels, TX 78132 | Oil & Gas Operator | Mar 2008 |
| 3757 | Explo Oil, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Apr 2025 |
| 3758 | Exploration Company, The | San Antonio, TX 78258 | Oil & Gas Operator | Jun 2010 |
| 3759 | Exploration Techniques Inc. | Houston, TX 77027 | Oil & Gas Operator | Apr 2025 |
| 3760 | Export Petroleum Corporation | Fort Worth, TX 76147 | Oil & Gas Operator | Apr 2025 |
| 3761 | Express Energy Group, LLC | Atlanta, TX 75551 | Oil Operator | Apr 2025 |
| 3762 | Express Oil And Gas | La Grange, TX 78945 | Oil & Gas Operator | Apr 2025 |
| 3763 | Express Oil Co. | Hallettsville, TX 77964 | Oil & Gas Operator | Apr 2025 |
| 3764 | Expro Engineering, Inc. | Fort Worth, TX 76179 | Oil & Gas Operator | Apr 2025 |
| 3765 | Extech Operating, LLC | Fort Worth, TX 76147 | Oil & Gas Operator | Apr 2025 |
| 3766 | Extenergy, L.P. | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2014 |
| 3767 | Extex Operating Company | Houston, TX 77057 | Oil & Gas Operator | Apr 2025 |
| 3768 | Exxcel Production Company | Pampa, TX 79066 | Oil & Gas Operator | Apr 2025 |
| 3769 | Exxon Corp. - Midland | Houston, TX 77210 | Gas Operator | Jul 1997 |
| 3770 | Exxon Corporation | Houston, TX 77210 | Oil & Gas Operator | Jun 2024 |
| 3771 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | Apr 2025 |
| 3772 | Exxonmobil Oil Corp | Houston, TX 77210 | Oil & Gas Operator | Dec 2024 |
| 3773 | Exzena Oil Corp. | Tyler, TX 75713 | Oil & Gas Operator | Apr 2025 |
| 3774 | Eylau Oil Inc. | Atlanta, TX 75551 | Oil & Gas Operator | Oct 2021 |
| 3775 | F & J Petroleum Company | Milano, TX 76556 | Oil Operator | Apr 2025 |
| 3776 | F & M Oil & Gas Co | Midland, TX 79702 | Oil & Gas Operator | Feb 2000 |
| 3777 | F & M Oil Company Inc | Pettus, TX 78146 | Oil & Gas Operator | Apr 2025 |
| 3778 | F & R Oil Co. | Dallas, TX 75205 | Oil & Gas Operator | May 2005 |
| 3779 | F & S Petroleum, L.L.C. | Lebanon, MO 65536 | Oil & Gas Operator | Apr 2025 |
| 3780 | F B Operating, Inc. | Montague, TX 76251 | Oil & Gas Operator | Aug 2003 |
| 3781 | F O & G LLC | Pawhuska, OK 74056-5075 | Oil Operator | Apr 2022 |
| 3782 | F Y B Investments, Inc. | Midland, TX 79711 | Oil & Gas Operator | Sep 1995 |
| 3783 | F&H Operating Company LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2025 |
| 3784 | F-B Oil, LP | Decatur, TX 76234 | Oil Operator | Aug 2015 |
| 3785 | F-W Oil Interests, Inc. | Houston, TX 77024 | Oil & Gas Operator | Dec 2006 |
| 3786 | F. B. R. Production Company | Pampa, TX 79066 | Oil & Gas Operator | May 2000 |
| 3787 | F. H. B. Company | Holliday, TX 76366 | Oil & Gas Operator | Apr 2025 |
| 3788 | F.I.G. Energy, LLC | Livingston, TX 77399 | Oil & Gas Operator | Apr 2025 |
| 3789 | F.M.C. Operating, Inc. | Austin, TX 78750 | Oil & Gas Operator | Oct 1996 |
| 3790 | Fabco | Big Lake, TX 76932 | Oil & Gas Operator | Apr 2025 |
| 3791 | Fagadau Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Apr 2006 |
| 3792 | Fair Oil Company | Tyler, TX 75710 | Oil & Gas Operator | Dec 2000 |
| 3793 | Fair Oil, LC | Tyler, TX 75710 | Oil & Gas Operator | Oct 2001 |
| 3794 | Fair Oil, LTD. | Tyler, TX 75710 | Oil & Gas Operator | Apr 2025 |
| 3795 | Fair Operating, Inc. | Boerne, TX 78015 | Oil & Gas Operator | Apr 2025 |
| 3796 | Fairfield Energy Corp. | Dallas, TX 75205 | Oil & Gas Operator | Apr 2025 |
| 3797 | Fairway Links Energy, Inc. | Tulsa, OK 74114 | Oil & Gas Operator | Aug 2016 |
| 3798 | Fairway Operating, Inc. | Lake Jackson, TX 77566 | Oil & Gas Operator | Apr 2025 |
| 3799 | Fairway Resources Op III, LLC | Southlake, TX 76092 | Oil & Gas Operator | Apr 2025 |
| 3800 | Fairway Resources Operating, LLC | Southlake, TX 76092 | Oil & Gas Operator | Aug 2022 |