| 1 | Adkins, R. L. Corp. | Lubbock, TX 79408 | Oil & Gas Operator | Jun 2013 |
| 2 | Alpine Petroleum | Abilene, TX 79608 | Oil & Gas Operator | Jul 2018 |
| 3 | Altura Energy LTD. | Houston, TX 77210 | Oil & Gas Operator | Apr 2000 |
| 4 | American Cometra, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2008 |
| 5 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | Sep 2025 |
| 6 | Arco Oil & Gas Company | Plano, TX 75086 | Oil & Gas Operator | Mar 2006 |
| 7 | Ashland Exploration Inc | Houston, TX 77218 | Oil & Gas Operator | Nov 2000 |
| 8 | Asm Oil & Gas Company, Inc. | Dallas, TX 75367 | Oil & Gas Operator | May 2020 |
| 9 | Atlas Operating LLC | Houston, TX 77056 | Oil & Gas Operator | Sep 2025 |
| 10 | Atoka Operating, Inc. | Gainesville, TX 76241 | Oil & Gas Operator | Sep 2025 |
| 11 | B & S Salvage | Post, TX 79356 | Oil & Gas Operator | Sep 2025 |
| 12 | B C & D Oil & Gas Corp. | Hobbs, NM 88241 | Oil & Gas Operator | Sep 2025 |
| 13 | Bara Corporation | Flower Mound, TX 75027 | Oil & Gas Operator | Apr 2004 |
| 14 | Barbee, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Mar 2008 |
| 15 | Basa Resources, Inc. | Dallas, TX 75254 | Oil & Gas Operator | Sep 2025 |
| 16 | Baxter Casing Pullers, Inc. | Midland, TX 79703 | Gas Operator | Sep 2025 |
| 17 | Baxter, Kelly H. Oil And Gas Co. | Austin, TX 78767 | Oil & Gas Operator | Nov 2010 |
| 18 | Baxter, Murphy H. | Houston, TX 77002 | Oil & Gas Operator | Sep 1998 |
| 19 | Bay Rock Operating Company | San Antonio, TX 78212 | Oil & Gas Operator | Sep 2025 |
| 20 | BC Operating, Inc. | Midland, TX 79710 | Oil & Gas Operator | Sep 2025 |
| 21 | Bdi Operating, LLC | Addison, TX 75001 | Oil Operator | Feb 2025 |
| 22 | Belco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 23 | Bettis, Boyle & Stovall | Graham, TX 76450 | Oil & Gas Operator | Sep 2025 |
| 24 | Bevers SWD, Inc. | Lubbock, TX 79453 | Oil & Gas Operator | Sep 2025 |
| 25 | Bexco Operating, Inc. | College Sta, TX 77845 | Oil & Gas Operator | Sep 2025 |
| 26 | Blake Production Company, Inc. | Oklahoma City, OK 73118 | Oil & Gas Operator | Sep 2025 |
| 27 | Blue River Inc. | Abilene, TX 79608 | Oil Operator | Sep 2025 |
| 28 | Bo Dunagin Operating, LLC | Merkel, TX 79536 | Oil Operator | Mar 2019 |
| 29 | Boyd & McWilliams Energy Group | Midland, TX 79701 | Oil & Gas Operator | Sep 2025 |
| 30 | Braman, D. H., Jr. | Victoria, TX 77901 | Oil & Gas Operator | Dec 2008 |
| 31 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | May 2025 |
| 32 | Bridwell Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Sep 2025 |
| 33 | Brigham Oil & Gas, L.P. | Austin, TX 78730 | Oil & Gas Operator | Oct 2015 |
| 34 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 35 | Brooks, E. B., Jr. | Dallas, TX 75206 | Oil & Gas Operator | May 2018 |
| 36 | Brown, Geo. R Partnership,LP,The | Houston, TX 77002 | Oil & Gas Operator | Sep 2025 |
| 37 | Brown, George R. Partnership,The | Houston, TX 77002 | Oil & Gas Operator | May 2006 |
| 38 | Bryant - Chase Energy Corp. | Tyler, TX 75701 | Oil & Gas Operator | Aug 2004 |
| 39 | Bta Oil Producers | Midland, TX 79701 | Oil & Gas Operator | Sep 2009 |
| 40 | Buck Wheat Resources, L.P. | Eastland, TX 76448 | Oil & Gas Operator | Sep 2025 |
| 41 | Buckeye Energy Inc | Midland, TX 79702 | Oil & Gas Operator | Dec 2018 |
| 42 | Burk Royalty Co., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | Sep 2025 |
| 43 | Bustamante Resources LLC | Midland, TX 79710 | Oil & Gas Operator | Sep 2025 |
| 44 | Butler, Kevin O. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 45 | Butler, Kevin O. & Assoc., Inc. | Midland, TX 79702 | Oil & Gas Operator | Sep 2025 |
| 46 | Cabana Oil Corp. | Abilene, TX 79608 | Oil & Gas Operator | Feb 2006 |
| 47 | Cal Oil Company | Missouri City, TX 77459 | Oil Operator | May 2022 |
| 48 | Canan Mowrey Operating, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Sep 2025 |
| 49 | Caprock Exploration, Inc. | Monahans, TX 79756 | Oil & Gas Operator | Sep 2025 |
| 50 | Caprock Operating, Inc. | Midland, TX 79708 | Oil & Gas Operator | Dec 2007 |
| 51 | Carroll Operating, LLC | Abilene, TX 79608 | Oil & Gas Operator | Feb 2022 |
| 52 | Cascade Resources LLC | Edmond, OK 73083 | Oil & Gas Operator | Jul 2025 |
| 53 | Cass Energy Corp | Dallas, TX 75225 | Oil & Gas Operator | Aug 2003 |
| 54 | CCV, Inc. | Houston, TX 77019 | Oil & Gas Operator | Sep 1994 |
| 55 | Chan West Oil Corporation | Irving, TX 75016 | Oil & Gas Operator | Sep 2025 |
| 56 | Chaparral (USA) Energy, Inc. | Oklahoma City, OK 73114 | Oil & Gas Operator | Sep 2002 |
| 57 | Chaparral Energy, L.L.C. | Oklahoma City, OK 73142 | Oil & Gas Operator | Sep 2025 |
| 58 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Apr 2025 |
| 59 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Sep 2025 |
| 60 | Chisholm Operating, Inc. | Abilene, TX 79606 | Oil & Gas Operator | Sep 2025 |
| 61 | Cholla Petroleum Inc | Dallas, TX 75225 | Oil & Gas Operator | Sep 2025 |
| 62 | Christie, C. B., Jr. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2014 |
| 63 | Circle H Oil Company | Big Spring, TX 79721 | Oil & Gas Operator | Apr 2020 |
| 64 | Citation Oil & Gas Corp. | Houston, TX 77269 | Oil & Gas Operator | Sep 2025 |
| 65 | Clear Fork, Incorporated | Abilene, TX 79604 | Oil & Gas Operator | Sep 2025 |
| 66 | CMR Oil, LLC | McKinney, TX 75072 | Oil Operator | Sep 2025 |
| 67 | Coastal Oil & Gas Corporation | Houston, TX 77252 | Oil & Gas Operator | Dec 2009 |
| 68 | Cobra Oil & Gas Corporation | Wichita Falls, TX 76307 | Oil & Gas Operator | Sep 2025 |
| 69 | Coda Energy, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Aug 1998 |
| 70 | Convest Energy Corporation | Houston, TX 77057 | Oil & Gas Operator | Sep 2014 |
| 71 | Core E & P Corp. | Victoria, TX 77902 | Oil & Gas Operator | Sep 2025 |
| 72 | Cory, Kenneth W. LTD. | Bellaire, TX 77401 | Oil & Gas Operator | Sep 2025 |
| 73 | Costilla Energy Inc | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 74 | Costilla Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 75 | Covenant Operating, LLC | Wichita Falls, TX 76308 | Oil Operator | Sep 2025 |
| 76 | Cox, John L. | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 77 | Coyote Oil, Inc. | Snyder, TX 79550 | Oil & Gas Operator | Sep 2025 |
| 78 | Crego Exploration | Dallas, TX 75243 | Oil & Gas Operator | Sep 2025 |
| 79 | Crest Resources Inc | Tulsa, OK 74103 | Oil & Gas Operator | Sep 2025 |
| 80 | Cross Timbers Operating Co | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2025 |
| 81 | Crossroads Operating, LLC | Midland, TX 79705 | Oil & Gas Operator | Sep 2025 |
| 82 | D & D Enterprises | Post, TX 79356 | Oil & Gas Operator | Sep 2025 |
| 83 | D & D Oil Co. #2 | Post, TX 79356 | Oil & Gas Operator | Sep 2025 |
| 84 | D & D Well Service, L.L.C. | Post, TX 79356 | Oil Operator | Sep 2025 |
| 85 | D.K.D. | Merkel, TX 79536 | Oil & Gas Operator | Sep 2025 |
| 86 | Dallas Production, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Mar 2021 |
| 87 | Delray Oil, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Sep 2025 |
| 88 | Devon Energy Production Company LP | Oklahoma City, OK 73102 | Oil & Gas Operator | Sep 2025 |
| 89 | Diasu Oil & Gas Co., Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2016 |
| 90 | Dickson Petroleum, Inc. | Midland, TX 79710 | Oil & Gas Operator | May 2000 |
| 91 | Dinero Operating Co | Midland, TX 79702 | Oil & Gas Operator | Sep 2025 |
| 92 | Discovery Operating Inc | Midland, TX 79705 | Oil & Gas Operator | Sep 2025 |
| 93 | Durham, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jul 2016 |
| 94 | Dynamic Production, Inc. | Fort Worth, TX 76106 | Oil & Gas Operator | Sep 2025 |
| 95 | E.C. Production, L.L.C. | Rosenberg, TX 77471 | Oil & Gas Operator | Sep 2025 |
| 96 | Eagle Oil & Gas Co. | Dallas, TX 75225 | Oil & Gas Operator | Sep 2025 |
| 97 | Eastern Energy Corporation | Bowling Green, KY 42104 | Oil & Gas Operator | Dec 2014 |
| 98 | Eastland Oil Company, The | Midland, TX 79702 | Oil & Gas Operator | Sep 2025 |
| 99 | El Paso E&P Company, L.P. | Houston, TX 77002 | Oil & Gas Operator | Mar 2013 |
| 100 | Elam, Jack G. | Midland, TX 79702 | Oil & Gas Operator | Dec 2002 |