| 1 | E & B Equipment | Liberty, TX 77575 | Oil & Gas Operator | Feb 2010 |
| 2 | E & E Construction Company | Wichita Falls, TX 76308 | Oil Operator | Apr 2024 |
| 3 | E & E Drilling Co., Inc. | Burkburnett, TX 76354 | Oil Operator | Apr 2024 |
| 4 | E & R Oil | San Angelo, TX 76906 | Oil & Gas Operator | Apr 2024 |
| 5 | E & W Oil, Inc. | Seguin, TX 78155 | Oil & Gas Operator | Apr 2024 |
| 6 | E & W Production | Olney, TX 76374 | Oil & Gas Operator | Aug 2018 |
| 7 | E L M Oil Company | Lockhart, TX 78644 | Oil & Gas Operator | May 2000 |
| 8 | E P C Oil & Gas, Inc. | Caldwell, TX 77836 | Oil & Gas Operator | Apr 2024 |
| 9 | E R Operating Company | Dallas, TX 75225 | Oil & Gas Operator | Apr 2024 |
| 10 | E W D Oil | Winters, TX 79567 | Oil & Gas Operator | Apr 2024 |
| 11 | E&B Natural Resources MGT Corp | Bakersfield, CA 93308 | Oil & Gas Operator | Aug 2017 |
| 12 | E-Cor, Inc. | Austin, TX 78734 | Gas Operator | Feb 1999 |
| 13 | E-L Gas Co., LTD. | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2001 |
| 14 | E-P Oil Co. Inc. | Luling, TX 78648 | Oil & Gas Operator | Apr 2024 |
| 15 | E. & H. Oil Company | Woodson, TX 76491 | Oil & Gas Operator | May 1998 |
| 16 | E. T. Oil Company | Luling, TX 78648 | Oil & Gas Operator | Apr 2024 |
| 17 | E. T. S. Enterprises, Inc. | Amarillo, TX 79105 | Oil & Gas Operator | Jul 1996 |
| 18 | E.A.T.E. Operating | Natalia, TX 78059 | Oil & Gas Operator | Apr 2024 |
| 19 | E.C. Hindman Oil And Gas | Graham, TX 76450 | Oil & Gas Operator | Apr 2024 |
| 20 | E.C. Production, L.L.C. | Rosenberg, TX 77471 | Oil & Gas Operator | Apr 2024 |
| 21 | E.G. Operating | Dallas, TX 75206 | Oil & Gas Operator | Mar 2008 |
| 22 | E.G.L. Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jan 2024 |
| 23 | E/T Petroleum Co. | Big Lake, TX 76932 | Oil & Gas Operator | Aug 2014 |
| 24 | E2 Operating LLC | Tulsa, OK 74114 | Oil & Gas Operator | Apr 2024 |
| 25 | Eaa Operating, LLC | Perryton, TX 79070 | Oil & Gas Operator | Apr 2024 |
| 26 | Eado Production, Inc. | Kermit, TX 79745 | Oil & Gas Operator | Aug 2012 |
| 27 | Eagle Capital Partners, LLC | Eunice, NM 88231 | Oil & Gas Operator | Apr 2024 |
| 28 | Eagle Energy | Midland, TX 79710 | Oil & Gas Operator | Sep 1999 |
| 29 | Eagle Energy Acquisitions LP | Houston, TX 77002 | Oil & Gas Operator | Aug 2014 |
| 30 | Eagle Energy Development Co | La Porte, TX 77571 | Oil & Gas Operator | Dec 2023 |
| 31 | Eagle Energy Resources, LLC | La Porte, TX 77571 | Oil & Gas Operator | Apr 2024 |
| 32 | Eagle Exploration Co., Inc. | Amarillo, TX 79105 | Oil & Gas Operator | Dec 2019 |
| 33 | Eagle Ford Hunter Resources,Inc. | Houston, TX 77024 | Oil & Gas Operator | Apr 2013 |
| 34 | Eagle Ford Oil Co., Inc. | Houston, TX 77057 | Oil & Gas Operator | Apr 2024 |
| 35 | Eagle Hydrocarbons (Texas) Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 36 | Eagle Hydrocarbons Inc | Houston, TX 77079 | Oil & Gas Operator | Jun 2020 |
| 37 | Eagle Natural Resources, LLC | Eunice, NM 88231 | Oil Operator | Apr 2024 |
| 38 | Eagle Oil & Gas Co. | Dallas, TX 75225 | Oil & Gas Operator | Apr 2024 |
| 39 | Eagle Oil Management, LLC | Shreveport, LA 71106 | Oil & Gas Operator | Apr 2024 |
| 40 | Eagle Operating | Midland, TX 79707 | Oil & Gas Operator | May 2013 |
| 41 | Eagle Petroleum Corporation | Holliday, TX 76366 | Oil & Gas Operator | Oct 2005 |
| 42 | Eagle Production, Inc. | Abilene, TX 79605 | Oil & Gas Operator | Apr 2024 |
| 43 | Eagle River Energy Corporation | Broken Arrow, OK 74011 | Oil & Gas Operator | Dec 2023 |
| 44 | Eagle Rock Mid-Continent Op, LLC | Houston, TX 77252 | Oil & Gas Operator | Sep 2015 |
| 45 | Eagle Rock Operating Company,LLC | Houston, TX 77252 | Oil & Gas Operator | Oct 2015 |
| 46 | Eagle Valley Development LLC | Austin, TX 78738 | Oil & Gas Operator | Oct 2023 |
| 47 | Eagleridge Operating, LLC | Dallas, TX 75219 | Oil & Gas Operator | Apr 2024 |
| 48 | Eakin Brothers | Pampa, TX 79065 | Gas Operator | Apr 2024 |
| 49 | Earnest Producing Corporation | Midland, TX 79704 | Oil & Gas Operator | Apr 2024 |
| 50 | Earth Science Exploration, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Nov 2012 |
| 51 | Earthbound Energy LLC | Merkel, TX 79536 | Oil Operator | Apr 2024 |
| 52 | Earthbound Resources LLC | Merkel, TX 79536 | Oil & Gas Operator | Apr 2024 |
| 53 | Earthstone Energy, Inc. | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2017 |
| 54 | Earthstone Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Apr 2024 |
| 55 | Eason Production Company | Atlanta, TX 75551 | Oil & Gas Operator | May 2007 |
| 56 | East Texas Exploration, LLC | Edmond, OK 73003 | Oil & Gas Operator | Sep 2019 |
| 57 | East Texas Production MGT. Inc | Athens, TX 75751 | Oil & Gas Operator | Apr 2024 |
| 58 | Eastern Energy Corporation | Bowling Green, KY 42104 | Oil & Gas Operator | Dec 2014 |
| 59 | Eastern Oil Corporation | Houston, TX 77070 | Oil & Gas Operator | Apr 2024 |
| 60 | Eastern Petroleum Company | Girard, OH 44420 | Oil & Gas Operator | Sep 1995 |
| 61 | Eastex Gas Production Co. | Houston, TX 77042 | Oil & Gas Operator | Aug 1996 |
| 62 | Eastex Operating, Inc. | Tyler, TX 75701 | Oil & Gas Operator | Jun 2003 |
| 63 | Eastland Exploration, Inc. | Austin, TX 78763 | Oil & Gas Operator | Apr 1997 |
| 64 | Eastland Oil Company, The | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |
| 65 | Eastland Operating, L.L.C. | Ranger, TX 76470 | Oil & Gas Operator | Apr 2024 |
| 66 | Ebs Oil & Gas Partners Op.Co.,LP | Dallas, TX 75219 | Oil & Gas Operator | May 2006 |
| 67 | Ec Stryker Inc | Decatur, TX 76234 | Oil & Gas Operator | Dec 2015 |
| 68 | Eca Holdings, L.P. | Sugar Land, TX 77478 | Oil & Gas Operator | Mar 2010 |
| 69 | Ecapa Energy Company | Holliday, TX 76366 | Oil Operator | Apr 2024 |
| 70 | Ecc Energy Corporation | Dewey, OK 74029 | Oil & Gas Operator | Feb 2020 |
| 71 | Ech Production LLC | Abilene, TX 79608 | Oil Operator | Apr 2024 |
| 72 | Echo Production Inc | Graham, TX 76450 | Oil & Gas Operator | Apr 2024 |
| 73 | Echols & Gray Bros. | Snyder, TX 79549 | Oil & Gas Operator | Jul 2003 |
| 74 | Echols Oil Company | Caddo, TX 76429 | Oil & Gas Operator | Jan 2012 |
| 75 | Echols Oil Company, L.L.C. | Caddo, TX 76429 | Oil & Gas Operator | Apr 2024 |
| 76 | Eck Petroleum LLC | Kingman, KS 67068 | Oil Operator | Nov 2019 |
| 77 | Eclipse Oil & Gas, Inc. | Midland, TX 79703 | Oil & Gas Operator | Apr 2024 |
| 78 | Eclipse Petroleum Corporation | La Grange, TX 78945 | Oil & Gas Operator | Aug 2003 |
| 79 | Eclipse Services, Inc. * | La Grange, TX 78945 | Oil & Gas Operator | Jul 2003 |
| 80 | Ecoserv Environmental SVCS, LLC | Abbeville, LA 70510 | Oil Operator | Apr 2024 |
| 81 | Edco Energy, Inc. | Austin, TX 78738 | Oil & Gas Operator | May 2003 |
| 82 | Edco Petroleum, Inc. | Dallas, TX 75202 | Oil & Gas Operator | Mar 2005 |
| 83 | Eddie'S Royalties, Inc. | Rising Star, TX 76471 | Oil & Gas Operator | Apr 2024 |
| 84 | Eddleman, M. W. | Oklahoma City, OK 73116 | Oil & Gas Operator | Nov 2000 |
| 85 | Edf Trading Resources, LLC | Austin, TX 78746 | Oil & Gas Operator | Jul 2015 |
| 86 | Edgar, Verlon | Belle Chasse, LA 70037 | Oil & Gas Operator | Feb 1998 |
| 87 | Edge Barnett Operating Comp LLC | Fort Worth, TX 76107 | Gas Operator | Nov 2013 |
| 88 | Edge Exploration, Inc. | Graham, TX 76450 | Oil & Gas Operator | Mar 2006 |
| 89 | Edge Oil & Gas Properties | Archer City, TX 76351 | Oil & Gas Operator | Apr 2024 |
| 90 | Edge Oil And Gas, LLC | Abilene, TX 79602 | Oil Operator | Apr 2024 |
| 91 | Edge Petroleum Corporation | Houston, TX 77002 | Oil & Gas Operator | Jun 1999 |
| 92 | Edge Petroleum Oper. Co., Inc. | Houston, TX 77042 | Oil & Gas Operator | Nov 2010 |
| 93 | Edge Resources Operating, L.L.C. | Fort Worth, TX 76107 | Gas Operator | Jan 2020 |
| 94 | Edge, Fred Well Service Co. | Archer City, TX 76351 | Oil & Gas Operator | Apr 2024 |
| 95 | Edinburgh Energy Partners, LLC | Midland, TX 79707 | Oil & Gas Operator | Apr 2024 |
| 96 | Edinger Engineering, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2024 |
| 97 | Edinger Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Jun 2007 |
| 98 | Edington Oil Company | Albany, TX 76430 | Oil & Gas Operator | Aug 2006 |
| 99 | Edisto Resources Corp | Houston, TX 77057 | Oil & Gas Operator | Oct 1999 |
| 100 | Edmar Company, L.L.C. | Midland, TX 79702 | Oil & Gas Operator | Feb 2020 |