| 1 | 1836 Energy LLC | El Campo, TX 77437 | Oil Operator | Apr 2026 |
| 2 | 2 T Production | Bowie, TX 76230 | Oil & Gas Operator | Apr 2026 |
| 3 | 3-T Exploration, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2026 |
| 4 | 4R Oil Company | Tyler, TX 75703 | Oil & Gas Operator | Apr 1997 |
| 5 | Abb Oil Co., Inc. | Wichita Falls, TX 76310 | Oil & Gas Operator | Apr 2026 |
| 6 | Abraxas Petroleum Corporation | San Antonio, TX 78259 | Oil & Gas Operator | Apr 2026 |
| 7 | Acadia Oil, LLC | Wichita Falls, TX 76310 | Oil Operator | Apr 2026 |
| 8 | Acoma Oil Corporation | Saint Paul, MN 55102 | Oil & Gas Operator | Apr 2026 |
| 9 | Adair Resources Inc. | Ennis, TX 75120 | Oil & Gas Operator | Apr 2018 |
| 10 | Addax Operating, LLC | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2026 |
| 11 | Adkins, R. L. Corp. | Lubbock, TX 79408 | Oil & Gas Operator | Jun 2013 |
| 12 | Aeternum Energy, LLC | Tyler, TX 75713 | Oil & Gas Operator | Apr 2026 |
| 13 | Akins Oil Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2026 |
| 14 | Allen, C. L. (Doie) | Wichita Falls, TX 76309 | Oil & Gas Operator | Apr 2026 |
| 15 | Alpha Exploration Co. | Wichita Falls, TX 76309 | Oil & Gas Operator | Oct 1998 |
| 16 | American Exploration Company | Houston, TX 77010 | Oil & Gas Operator | Jan 2000 |
| 17 | Apc Operating Partnership | Tulsa, OK 74136 | Oil & Gas Operator | Oct 1996 |
| 18 | Apex Operating & Equip. Co. | Bowie, TX 76230 | Oil & Gas Operator | Nov 2003 |
| 19 | Arch Operating, LLC | Wichita Falls, TX 76307 | Oil Operator | Apr 2026 |
| 20 | Archer Reef Oil Co. | Bellevue, TX 76228 | Oil & Gas Operator | Apr 2026 |
| 21 | Aries Operating, LLC | Houston, TX 77010 | Oil & Gas Operator | Feb 2009 |
| 22 | Aries Operating, LP | Houston, TX 77042 | Oil & Gas Operator | Apr 2026 |
| 23 | Armour, Widd | Graham, TX 76450 | Oil & Gas Operator | Apr 2026 |
| 24 | Arnot, W. G., Jr. | Breckenridge, TX 76424 | Oil & Gas Operator | Jan 2017 |
| 25 | Aroc (Texas) Inc. | Houston, TX 77090 | Oil & Gas Operator | Dec 2014 |
| 26 | Arrowhead Resources, Inc. | Fort Worth, TX 76107 | Oil & Gas Operator | Apr 2026 |
| 27 | Ashtola Exploration Company,Inc. | Amarillo, TX 79105 | Oil & Gas Operator | Apr 2026 |
| 28 | Aspen Operating Company LLC | Fort Worth, TX 76116 | Oil & Gas Operator | Apr 2026 |
| 29 | Atmos Pipeline - Texas | Dallas, TX 75240 | Oil & Gas Operator | Apr 2026 |
| 30 | Atoka Energy LLC | Gainesville, TX 76241 | Oil & Gas Operator | Apr 2026 |
| 31 | Atoka Operating, Inc. | Gainesville, TX 76241 | Oil & Gas Operator | Apr 2026 |
| 32 | Atwell, David L. | Duncan, OK 73533 | Oil & Gas Operator | Jul 2003 |
| 33 | Ausanka Oil Operations | Wichita Falls, TX 76308 | Oil & Gas Operator | Jun 1995 |
| 34 | Avad Operating, LLC | Dallas, TX 75201 | Oil & Gas Operator | Apr 2026 |
| 35 | Ayres, C. D. | Iowa Park, TX 76367 | Oil & Gas Operator | Apr 2026 |
| 36 | Aztec Energy, LLC | Wichita Falls, TX 76301 | Oil Operator | Apr 2026 |
| 37 | Aztec Oil & Gas Company "A" | Wichita Falls, TX 76309 | Oil & Gas Operator | Sep 2010 |
| 38 | Azteca Petroleum, LLC | Fort Worth, TX 76106 | Oil & Gas Operator | Apr 2026 |
| 39 | B.E.G. Production | Iowa Park, TX 76367 | Oil & Gas Operator | Apr 2026 |
| 40 | Baber, Bill M. | Petrolia, TX 76377 | Oil & Gas Operator | Apr 2026 |
| 41 | Bandera Exploration Company | Dallas, TX 75225 | Oil & Gas Operator | Jan 2017 |
| 42 | Bandera Petroleum, Inc. | Abilene, TX 79606 | Oil & Gas Operator | Nov 2018 |
| 43 | Bankhead Operating Corp. | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2026 |
| 44 | Bar H Production, Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 1997 |
| 45 | Bar Operating Production Co. | Abilene, TX 79604 | Oil & Gas Operator | Feb 2004 |
| 46 | Barbee, Bill J. | Amarillo, TX 79101 | Oil & Gas Operator | Dec 1994 |
| 47 | Barden/Bass O & G Expl. Co. Inc. | Terrell, TX 75160 | Oil & Gas Operator | Mar 2008 |
| 48 | Bass Enterprises Production Co | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2006 |
| 49 | Beeson Energy, Inc. | Aledo, TX 76008 | Oil & Gas Operator | Apr 2026 |
| 50 | Belco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 51 | Bennett Production Corporation | Bowie, TX 76230 | Oil & Gas Operator | Apr 2024 |
| 52 | Bentley Oil & Gas Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2026 |
| 53 | Beren Corporation | Wichita, KS 67206 | Oil & Gas Operator | Apr 2026 |
| 54 | Best Petroleum Explorations,Inc. | Jacksboro, TX 76458 | Oil & Gas Operator | Apr 2026 |
| 55 | Bettis, Boyle & Stovall | Graham, TX 76450 | Oil & Gas Operator | Apr 2026 |
| 56 | Biehl Oil Service'S LLC | Bellevue, TX 76228 | Oil & Gas Operator | Nov 2017 |
| 57 | Big Rock Oil LLC | Frisco, TX 75034 | Oil Operator | Apr 2026 |
| 58 | Birge Oil Co. | Wichita Falls, TX 76302 | Oil & Gas Operator | Jun 1995 |
| 59 | Black Bandana LLC | Santo, TX 76472 | Oil & Gas Operator | Apr 2026 |
| 60 | Blakenergy Operating, LLC | Spring, TX 77386 | Oil & Gas Operator | Apr 2026 |
| 61 | Bluebonnet Land & Cattle Co. | Graham, TX 76450 | Oil & Gas Operator | Apr 2026 |
| 62 | Bomar Oil & Gas, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Dec 2020 |
| 63 | Bonfire Operating LLC | Cresson, TX 76035 | Oil & Gas Operator | Apr 2026 |
| 64 | Borderline Operating Corp. | Graham, TX 76450 | Oil & Gas Operator | Apr 2026 |
| 65 | Borders, Delbert L. Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Feb 2019 |
| 66 | Boydston & Moore | Graham, TX 76450 | Oil & Gas Operator | Apr 2003 |
| 67 | Bra-De Oil & Gas Inc. | Montague, TX 76251 | Oil & Gas Operator | Jun 2016 |
| 68 | Bra-De Oil & Gas Operating, LLC | Montague, TX 76251 | Oil & Gas Operator | Apr 2026 |
| 69 | Bradley, John W. Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 2026 |
| 70 | Brammer Petroleum, Inc. | Gainesville, TX 76241 | Oil & Gas Operator | Apr 2026 |
| 71 | Brammer Supply Inc | Gainesville, TX 76240 | Oil & Gas Operator | Nov 2014 |
| 72 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2026 |
| 73 | Bridwell Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2026 |
| 74 | Brigadier Operating, LLC | Plano, TX 75024 | Oil & Gas Operator | Aug 2017 |
| 75 | Brisco, W. M. | Jacksboro, TX 76458 | Oil & Gas Operator | Nov 2003 |
| 76 | Britton Operating, Inc. | Aledo, TX 76008 | Oil & Gas Operator | Apr 2026 |
| 77 | Brock, Joe Wayne | N Richlnd HLS, TX 76180 | Oil & Gas Operator | Feb 2010 |
| 78 | Brown, Leon | Wichita Falls, TX 76308 | Oil & Gas Operator | Jun 2005 |
| 79 | Browning Operating Co. | Bellevue, TX 76228 | Oil & Gas Operator | Jun 2020 |
| 80 | Browning Operating Co., LLC | Henrietta, TX 76365 | Oil & Gas Operator | Apr 2026 |
| 81 | Brumbelow, Ronny L. | Wichita Falls, TX 76306 | Oil & Gas Operator | Oct 2004 |
| 82 | Bubenik, Ronnie, Inc. | Mineral Wells, TX 76067 | Oil & Gas Operator | Apr 2026 |
| 83 | Bud Oil, Inc. | Duncan, OK 73534 | Oil & Gas Operator | Apr 2026 |
| 84 | Burk Royalty Co., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2026 |
| 85 | Burk Royalty Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jan 2002 |
| 86 | Burleson, Jackie A. | Wichita Falls, TX 76307 | Oil & Gas Operator | Feb 2003 |
| 87 | Burns Operating | Wichita Falls, TX 76307 | Oil & Gas Operator | Sep 2002 |
| 88 | Burns Operating LLC | Wichita Falls, TX 76307 | Oil & Gas Operator | Jul 2009 |
| 89 | Burns, P. C. Oil Producers Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2000 |
| 90 | Cago, Inc. | College Sta, TX 77845 | Oil & Gas Operator | Apr 2026 |
| 91 | Callon Petroleum Operating Co | Houston, TX 77042 | Oil & Gas Operator | Jul 2024 |
| 92 | Cambrian Management LTD | McCaulley, TX 79534 | Oil & Gas Operator | Apr 2026 |
| 93 | Canan Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2026 |
| 94 | Caribou Operating Co. | Granbury, TX 76048 | Oil & Gas Operator | Mar 2010 |
| 95 | Carrizo Oil & Gas, Inc. | Houston, TX 77002 | Oil & Gas Operator | Apr 2026 |
| 96 | Carroll, Alvis J. | Wichita Falls, TX 76302 | Oil & Gas Operator | Mar 2008 |
| 97 | Carter Energy Corporation | Duncanville, TX 75138 | Oil & Gas Operator | Sep 2010 |
| 98 | Cary Oil & Gas, Inc | Decatur, TX 76234 | Oil & Gas Operator | Apr 2026 |
| 99 | Case, C. W. | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2026 |
| 100 | Caswell Bros. Oil Co. | Bowie, TX 76230 | Oil & Gas Operator | Apr 2026 |