| Usx Hematite Unit #1 G-3-177684 | Carrizo Oil & Gas, Inc. only | Hematite Sand (Vicksburg) | Chambers | 1 | 192K | 6.39M | Nov 1999 – Dec 2005 |
| Taylor-Carrico Unit #1 G-1-297217 | Trinity Operating (Usg), LLC only | Briscoe Ranch (Eagleford) | Frio | 1 | 137K | 488K | Jan 2022 – Apr 2026 |
| Taylor-Carrico Unit #1 G-1-296950 | Trinity Operating (Usg), LLC only | Briscoe Ranch (Eagleford) | Frio | 1 | 116K | 519K | Jan 2022 – Apr 2026 |
| Sweeney Gas Unit #1 G-3-35629 | Daylight Petroleum LLC only | Milton, N. (13000) | Harris | 1 | 106K | 10.1M | Jan 1993 – Apr 2026 |
| Hamill Gas Unit #1 G-3-149628 | Petrotx Operating, LLC only | Milton, N. (13000) | Harris | 1 | 84.5K | 2.41M | Nov 1993 – Apr 2026 |
| Eagle Lake Gas Unit #1 G-3-279146 | Mag Exploration LLC only | Eagle Lake (Wilcox A-2) | Colorado | 1 | 81K | 2.18M | Jul 2015 – Feb 2020 |
| Durkee Gas Unit #1 G-6-17052 | T W Clemons Operating Co., LLC only | Woodlawn (Pettit) | Harrison | 1 | 78.6K | 661K | Aug 1994 – Apr 2026 |
| Graves Estate(wilcox)gas Unit #1 G-3-154137 | EOG Resources, Inc. only | Milton, N. (13000) | Harris | 1 | 73.1K | 2.12M | Oct 1994 – Aug 2003 |
| Hamill Gas Unit #1 G-3-39890 | Petrotx Operating, LLC only | Milton, N. (13000) | Harris | 1 | 72.5K | 1.89M | Jan 1993 – Apr 2026 |
| Durkee Gas Unit #1 G-6-227604 | T W Clemons Operating Co., LLC only | Woodlawn (Pettit) | Harrison | 1 | 70.5K | 452K | Feb 2007 – Apr 2026 |
| Pena Gas Unit #1 G-4-121046 | Bordertown Energy Resources, LLC only | Mestena Grande (Queen City Cons) | Jim Hogg | 1 | 68.4K | 4.1M | Jan 1993 – Dec 2023 |
| Briggs Ranch G Unit #1 G-1-272163 | Verdun Oil & Gas LLC only | Hawkville (Eagleford Shale) | La Salle | 1 | 68.2K | 617K | Mar 2014 – Sep 2025 |
| Lake Tejas Unit #1 G-3-281186 | Zarvona Energy LLC only | Magnolia Springs (Austin Chalk) | Tyler | 1 | 52.4K | 995K | Nov 2014 – Mar 2026 |
| Usx Hematite Unit #1 G-3-180387 | Carrizo Oil & Gas, Inc. only | Hematite Sand (Vicksburg) | Chambers | 1 | 48.8K | 830K | Sep 2000 – Jul 2003 |
| Graves Estate(wilcox)gas Unit #1 G-3-153354 | Cathexis Oil & Gas, LLC only | Milton, N. (9800 Wilcox) | Harris | 1 | 46.9K | 6.95M | Dec 1994 – Feb 2011 |
| Selected Lands Unit #1 G-3-159041 | Patterson Petroleum LP only | Iola (Georgetown) | Grimes | 1 | 46.3K | 971K | May 1996 – Apr 2001 |
| J.W. McClelland et al Unit #1 G-2-149008 | Sandel Operating Company only | Limes (Wilcox F-1) | Live Oak | 1 | 43.1K | 2.35M | Mar 1994 – Apr 2026 |
| Marchbanks-Cadena Gas Unit #1 G-4-215945 | Crossroads Petroleum L.L.C. only | Orcones (Frio-Vksbg Cons.) | Duval | 1 | 41.9K | 605K | Jan 2006 – Nov 2021 |
| Tuel Gas Unit #1 G-6-145049 | McBee Operating Company, L.L.C. only | Rosewood (Cotton Valley) | Upshur | 1 | 41.4K | 2.84M | Mar 1993 – Apr 2026 |
| Salazar Unit #1 G-4-177702 | Property Development Group, Inc. only | Heep (Baffin) | Kleberg | 1 | 41.2K | 2.28M | Jun 2000 – Aug 2003 |
| Graves Estate(wilcox)gas Unit #1 G-3-151617 | Petrotx Operating, LLC only | Milton, N. (9800 Wilcox) | Harris | 1 | 41K | 7.98M | Oct 1994 – Apr 2026 |
| Usx Hematite Unit #1 G-3-184008 | Carrizo Oil & Gas, Inc. only | Hematite Sand (Vicksburg) | Chambers | 1 | 40.8K | 916K | Jul 2001 – Mar 2003 |
| Rhodes, V. E. Gas Unit #1 G-2-101737 | Capital Star Oil & Gas, Inc. only | Word, N. (Edwards) | Lavaca | 1 | 40.5K | 5.05M | Jan 1993 – Apr 2026 |
| Sobotik, F. Gas Unit #1 G-2-88607 | Capital Star Oil & Gas, Inc. only | Word, N. (Edwards) | Lavaca | 1 | 39.4K | 5.9M | Jan 1993 – Apr 2026 |
| Indian Rock Gas Unit #11 G-6-59218 | Sulphur River Exploration, Inc. only | Gilmer(jurassic) | Upshur | 1 | 38.1K | 3.91M | Jan 1993 – Apr 2026 |
| Wolf Unit #1 G-3-180662 | Lindenmuth & Associates, Inc. only | Lucky, West (Gola) | Matagorda | 1 | 37.8K | 2.47M | Dec 2000 – Nov 2001 |
| Brumble,g.w. Gas Unit #1 O/A G-6-158081 | TGNR Panola LLC only | Bethany, East (Cotton Valley) | Panola | 1 | 37.8K | 2.3M | Feb 1996 – Apr 2026 |
| Von Rosenberg, Monte Gas Unit #1 G-2-97122 | Capital Star Oil & Gas, Inc. only | Word, N. (Edwards) | Lavaca | 1 | 34.3K | 5.64M | Jan 1993 – Apr 2026 |
| Fossil Donelson Gas Unit #1 G-5-218176 | Contrast Energy, LLC only | Hilltop Resort (Pettet) | Leon | 1 | 34.3K | 2.06M | May 2006 – Jun 2024 |
| Kangerga Unit #1 G-6-68997 | Jandar Exploration, L. C. only | Rufus (Pettit, Lower) | Rusk | 1 | 32K | 921K | Jan 1993 – Apr 2026 |
| Barbee Gas Unit #1 G-6-156070 | McBee Operating Company, L.L.C. only | Rosewood (Cotton Valley) | Upshur | 1 | 30.5K | 1.43M | Aug 1995 – Apr 2026 |
| Allgood Gas Unit #1 G-6-155607 | Crescent Pass Energy, LLC only | Gilmer(jurassic) | Upshur | 1 | 29.8K | 2.4M | Jun 1995 – Jul 2015 |
| Dean, A. E. Gas Unit #1 G-6-276197 | Eqv Operating LLC only | Oak Hill (Cotton Valley) | Rusk | 1 | 29.1K | 3.29M | Dec 2014 – Apr 2026 |
| Beaver Unit #1 G-5-166309 | Palmer Petroleum Inc. only | Aventura Ranch (James Lime) | Van Zandt | 1 | 27.3K | 880K | Nov 1997 – Jul 2011 |
| Wade, C.K. Gas Unit #1 G-6-140700 | Faulconer Energy, LLC only | Rosewood (Cotton Valley) | Upshur | 1 | 27.3K | 2.71M | Jan 1993 – Apr 2026 |
| Bogel Gas Unit #1 G-6-145293 | McBee Operating Company, L.L.C. only | Rosewood (Cotton Valley) | Upshur | 1 | 25.4K | 2.44M | Mar 1993 – Apr 2026 |
| Tuel Gas Unit #1 G-6-191055 | McBee Operating Company, L.L.C. only | Rosewood (Cotton Valley) | Upshur | 1 | 24.5K | 1.87M | Sep 2002 – Apr 2026 |
| Von Rosenberg, Monte Gas Unit #1 G-2-76036 | Capital Star Oil & Gas, Inc. only | Word, N. (Edwards) | Lavaca | 1 | 23.6K | 4.36M | Jan 1993 – Apr 2026 |
| Wade, C.K. Gas Unit #1 G-6-143074 | Faulconer Energy, LLC only | Rosewood (Cotton Valley) | Upshur | 1 | 23.3K | 2.51M | Jan 1993 – Apr 2026 |
| Rhodes, V. E. Gas Unit #1 G-2-77478 | Capital Star Oil & Gas, Inc. only | Word, N. (Edwards) | Lavaca | 1 | 23.2K | 4.21M | Jan 1993 – Apr 2026 |
| Bogel Gas Unit #1 G-6-161549 | McBee Operating Company, L.L.C. only | Rosewood (Cotton Valley) | Upshur | 1 | 23.1K | 1.69M | Nov 1996 – Apr 2026 |
| Hurst-Faulk Gas Unit #1 G-6-242689 | H & T Exploration, Inc. only | Tatum, North (Travis Peak) | Rusk | 1 | 23K | 1.67M | Oct 2008 – Dec 2023 |
| Beard Gas Unit #1 G-6-140316 | Hibbard Energy, LP only | Garrison (Travis Peak) | Shelby | 1 | 23K | 1.28M | Jan 1993 – Oct 2015 |
| Von Rosenberg, Monte Gas Unit #1 G-2-113561 | Capital Star Oil & Gas, Inc. only | Word, N. (Edwards) | Lavaca | 1 | 23K | 2.37M | Jan 1993 – Apr 2026 |
| Bogel Gas Unit #1 G-6-108521 | McBee Operating Company, L.L.C. only | Rosewood (Cotton Valley) | Upshur | 1 | 22.8K | 1.8M | Jan 1993 – Apr 2026 |
| McKnight, Will Gas Unit #1 G-6-142937 | Faulconer Energy, LLC only | Rosewood (Cotton Valley) | Upshur | 1 | 22.5K | 2.11M | Jan 1993 – Apr 2026 |
| Randow Gas Unit #1 G-2-95647 | Capital Star Oil & Gas, Inc. only | Word, N. (Edwards) | Lavaca | 1 | 21.6K | 4.22M | Jan 1993 – Apr 2026 |
| Randow Gas Unit #1 G-2-89718 | Capital Star Oil & Gas, Inc. only | Word, N. (Edwards) | Lavaca | 1 | 21.5K | 4.31M | Jan 1993 – Apr 2026 |
| Mossy Grove Gas Unit #1 G-3-36327 | EOG Resources, Inc. only | Mossy Grove (Glen Rose) | Walker | 1 | 21.1K | 1.87M | Jan 1993 – Apr 2026 |
| Tuel Gas Unit #1 G-6-171455 | McBee Operating Company, L.L.C. only | Rosewood (Cotton Valley) | Upshur | 1 | 20.5K | 1.6M | Oct 1998 – Apr 2026 |