| Thomas 203-204 Unit G-10-292937 | Permian Resources Operating, LLC only | Phantom (Wolfcamp) | Ward | 1 | 517K | 4.74M | Dec 2021 – Apr 2026 |
| Thomas Crozier Unit G-1-296365 | EOG Resources, Inc. only | Eagleville (Eagle Ford-1) | Gonzales | 1 | 294K | 575K | Mar 2017 – Apr 2026 |
| Thompson-Marsh Unit G-3-146625 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk, Gas) | Brazos | 1 | 232K | 2.22M | Aug 1993 – Aug 2020 |
| Thomas Crozier Unit G-1-296364 | EOG Resources, Inc. only | Eagleville (Eagle Ford-1) | Karnes | 1 | 214K | 579K | Jun 2018 – Apr 2026 |
| Thomas Crozier Unit G-1-296363 | EOG Resources, Inc. only | Eagleville (Eagle Ford-1) | Gonzales | 1 | 193K | 473K | Mar 2017 – Apr 2026 |
| Thomas Crozier Unit G-1-296362 | EOG Resources, Inc. only | Eagleville (Eagle Ford-1) | Gonzales | 1 | 171K | 535K | Mar 2017 – Apr 2026 |
| Thomas G-14-256313 | Unbridled Resources, LLC only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 140K | 2.41M | May 2010 – Apr 2026 |
| Thomas-Rife Gas Unit G-4-176199 | Merit Energy Company only | Rincon, N. (Vicksburg Cons.) | Starr | 1 | 133K | 6.64M | Jan 2000 – Apr 2026 |
| Thomas-Rife Gas Unit G-4-187140 | Merit Energy Company only | Rincon, N. (Vicksburg Cons.) | Starr | 1 | 133K | 7.39M | Dec 2001 – Apr 2026 |
| Thomas W 5 G-14-262427 | Unbridled Resources, LLC only | Frye Ranch (Consolidated) | Wheeler | 1 | 115K | 3.44M | Aug 2010 – Apr 2026 |
| Thomas G-14-264288 | Unbridled Resources, LLC only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 105K | 2.15M | Aug 2011 – Apr 2026 |
| Thomas Meek 76 G-14-267218 | Mmgl Txph, LLC only | Buffalo Wallow (Granite Wash) | Hemphill | 1 | 100K | 7.03M | Sep 2011 – Apr 2026 |
| Thomas 5 G-14-262995 | Unbridled Resources, LLC only | Frye Ranch (Consolidated) | Wheeler | 1 | 98.6K | 2.38M | Apr 2011 – Dec 2025 |
| Thomas 5 G-14-266531 | Unbridled Resources, LLC only | Frye Ranch (Consolidated) | Wheeler | 1 | 98.3K | 2.46M | May 2011 – Apr 2026 |
| Thompson G-6-281537 | Valence Operating Company only | Overton (Cotton Valley Sand) | Cherokee | 1 | 94.1K | 2.68M | Aug 2016 – Apr 2026 |
| Thompson Unit G-13-273340 | EOG Resources, Inc. only | Newark, East (Barnett Shale) | Montague | 1 | 86.9K | 727K | Jul 2010 – Apr 2026 |
| Thomas G-14-259965 | Unbridled Resources, LLC only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 84K | 1.44M | Jan 2011 – Apr 2026 |
| Pathomack 55 G-10-173889 | XTO Energy Inc. only | Block 16 (Montoya) | Ward | 1 | 76.9K | 18.2M | Jun 1999 – Apr 2026 |
| Thomas-Rife Gas Unit G-4-178695 | Merit Energy Company only | Rincon, N. (Vicksburg Cons.) | Starr | 1 | 72.4K | 4.68M | Sep 2000 – Apr 2026 |
| Thompson Unit G-13-273341 | EOG Resources, Inc. only | Newark, East (Barnett Shale) | Montague | 1 | 68.4K | 1.77M | Jul 2010 – Apr 2026 |
| Ann Friar Thomas G-2-285862 | Marathon Oil EF LLC only | Eagleville (Eagle Ford-2) | De Witt | 1 | 67.8K | 533K | Apr 2012 – Dec 2025 |
| Thomas 3 G-14-275906 | Unbridled Resources, LLC only | Frye Ranch (Consolidated) | Wheeler | 1 | 62K | 2.02M | Jun 2013 – Apr 2026 |
| Ann Friar Thomas G-2-285856 | Marathon Oil EF LLC only | Eagleville (Eagle Ford-2) | De Witt | 1 | 60.7K | 448K | Jul 2012 – Dec 2025 |
| Ann Friar Thomas G-2-285876 | Marathon Oil EF LLC only | Eagleville (Eagle Ford-2) | De Witt | 1 | 56.8K | 345K | Jul 2012 – Aug 2021 |
| Ann Friar Thomas G-2-285864 | Marathon Oil EF LLC only | Eagleville (Eagle Ford-2) | De Witt | 1 | 55.5K | 290K | Jul 2012 – Apr 2024 |
| Thomas 3 G-14-272267 | Unbridled Resources, LLC only | Frye Ranch (Consolidated) | Wheeler | 1 | 54.6K | 1.28M | Aug 2012 – Apr 2026 |
| Thomas-Rife Gas Unit G-4-175381 | Merit Energy Company only | Rincon, N. (Vicksburg Cons.) | Starr | 1 | 53.8K | 2.45M | Dec 1999 – Apr 2026 |
| Thomas Meek 76 G-14-277927 | Crown Petroleum Corp. only | Buffalo Wallow (Granite Wash) | Hemphill | 1 | 53.7K | 4.19M | Oct 2013 – Mar 2026 |
| Thomas-Rife Gas Unit G-4-179238 | Merit Energy Company only | Rincon, N. (Vicksburg Cons.) | Starr | 1 | 51.7K | 4.07M | Sep 2000 – Apr 2026 |
| Ann Friar Thomas G-2-285875 | Marathon Oil EF LLC only | Eagleville (Eagle Ford-2) | De Witt | 1 | 49.8K | 368K | Dec 2012 – Nov 2025 |
| Thomas G-4-247890 | Wagner Oil Company only | La Sal Vieja (Frio Cons) | Willacy | 1 | 48.7K | 2.03M | Mar 2009 – Apr 2026 |
| Thomas G-14-263566 | Unbridled Resources, LLC only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 42.6K | 2.82M | Oct 2011 – Apr 2026 |
| Thomas, Charles G-6-183434 | Diversified Production LLC only | Carthage (Cotton Valley) | Panola | 1 | 42.1K | 472K | May 2001 – Apr 2026 |
| Black Stone Thompson G-3-242381 | Cimarex Energy Co. only | Sour Lake Easter (Yegua) | Hardin | 1 | 41.7K | 2.71M | Jul 2008 – Oct 2012 |
| Ann Friar Thomas G-2-285863 | Marathon Oil EF LLC only | Eagleville (Eagle Ford-2) | De Witt | 1 | 38.7K | 282K | Jul 2012 – Apr 2024 |
| Thomas a Unit G-13-272315 | Scout Energy Management LLC only | Newark, East (Barnett Shale) | Montague | 1 | 36.9K | 556K | Sep 2013 – Mar 2021 |
| Thomas G-4-245275 | Wagner Oil Company only | La Sal Vieja (Frio Cons) | Willacy | 1 | 35.2K | 2.28M | Oct 2008 – Apr 2026 |
| Thomas 3 G-14-268992 | Unbridled Resources, LLC only | Frye Ranch (Consolidated) | Wheeler | 1 | 35.1K | 980K | Jul 2012 – Apr 2026 |
| Thomas G-6-280167 | E2 Operating LLC only | Eastham State Farm (Glenrose) | Madison | 1 | 33.3K | 69.5K | Feb 2015 – Jun 2025 |
| Thomasma, Ray J. G-4-198842 | Hilcorp Energy Company only | Zwebb (10350) | Zapata | 1 | 32.7K | 4.08M | Nov 2003 – Apr 2026 |
| Thomas -H- G-6-29718 | Eqv Operating LLC only | Carthage (Pettit, Upper) | Panola | 1 | 32.2K | 2.24M | Jan 1993 – Apr 2026 |
| Thomas & Wood G-6-139933 | XTO Energy Inc. only | Carthage (Cotton Valley) | Panola | 1 | 31.7K | 2.27M | Jan 1993 – Apr 2026 |
| Brown, Thomas G-4-172167 | Sandalwood Oil & Gas, Inc. only | Taft (7400 Andrew) | San Patricio | 1 | 31.6K | 1.04M | Jan 1999 – Dec 1999 |
| Thomas Duhon Unit G-2-286010 | Marathon Oil EF LLC only | Eagleville (Eagle Ford-2) | De Witt | 1 | 31.5K | 189K | May 2013 – Jan 2026 |
| Thomasma, Ray J. G-4-197050 | Hilcorp Energy Company only | Zwebb (10350) | Zapata | 1 | 31K | 4.87M | Sep 2003 – Apr 2026 |
| Thomas-Rife Gas Unit G-4-190834 | Merit Energy Company only | Rincon, N. (Vicksburg Cons.) | Starr | 1 | 29.9K | 1.76M | Aug 2002 – Jan 2019 |
| Vaughan 84 G-9-168037 | Thompson, J. Cleo only | Doc Buddy (Ellenburger) | Crockett | 1 | 29.4K | 993K | Apr 1998 – Sep 2018 |
| Choice Thompson Unit NO 1 G-3-115643 | Mobil Producing TX. & N.M. Inc. only | Sour Lake, E. (Kirby FB-A) | Hardin | 1 | 29K | 662K | Jan 1993 – Feb 1996 |
| Mildred Thompson "A" G-5-257531 | Diversified Production LLC only | Freestone (CV-Bossier Cons.) | Limestone | 1 | 28.6K | 3.38M | Apr 2010 – Apr 2026 |
| Pathomack 55 G-10-178783 | XTO Energy Inc. only | Block 16 (Montoya) | Ward | 1 | 28.4K | 6.55M | Apr 2000 – Feb 2017 |