| Aspen O-8-27822 | First American Operating Co. only | Green, E. (Miss) | Stephens | 1 | 114 | 60.2K | Apr 1996 – Apr 2001 |
| Billings O-1-13592 | Claron Corporation only | First Shot (Austin Chalk) | Gonzales | 1 | 90 | 2 | Jan 1993 – Jul 2026 |
| Canales O-4-11797 | Villalon, J. Antonio, Trustee only | Canales (First Pettus) | Duval | 1 | 83 | 4 | Jan 1993 – Aug 2003 |
| Abrams 33 O-10-36395 | First Permian, L.L.C. only | Westbrook (Clear Fork, Upper) | Mitchell | 1 | 61 | 0 | Apr 2000 – Oct 2001 |
| Ellis O-1-21489 | Modern Exploration, Inc. only | First Shot (Austin Chalk) | Gonzales | 1 | 61 | 0 | May 2024 – Jul 2026 |
| Culpepper Oil Unit # 2 O-1-13229 | Tana Oil and Gas Corporation only | First Shot (Austin Chalk) | Gonzales | 1 | 54 | 39 | Jan 1993 – Mar 1994 |
| First Natl Bank of Jacksboro -B- O-13-18877 | Aspen Operating Company, L.L.C. only | Southwestern (Caddo Reef) | Jack | 1 | 36 | 2.97K | Jan 1993 – Apr 2018 |
| Bishop Duval Land Company O-4-13619 | Hilcorp Energy Company only | Loma Novia, West (First Sand) | Duval | 1 | 35 | 0 | Jun 2010 – Jul 2026 |
| First Lockhart National Bank -C- O-1-9291 | E-P Oil Co. Inc. only | Luling-Branyon | Caldwell | 2 | 27 | 6 | Jan 1993 – Jul 2026 |
| First Lockhart National Bank -B- O-1-9290 | E-P Oil Co. Inc. only | Luling-Branyon | Caldwell | 2 | 27 | 6 | Jan 1993 – Jul 2026 |
| First State Bank of Lockhart O-1-6230 | E-P Oil Co. Inc. only | Luling-Branyon | Caldwell | 4 | 26 | 7 | Jan 1993 – Jul 2026 |
| Thoms -A- O-1-12909 | First Rock, Inc. only | Marcelina Creek (Buda) | Wilson | 1 | 23 | 1 | Jan 1993 – Jul 2002 |
| Bishop Cattle Company O-4-4777 | Alacia Operating Company only | Loma Novia, West (First Sand) | Duval | 5 | 4 | 1 | Jan 1993 – Jul 2026 |
| Bankhead, Jessie A. G. O-1-13006 | Tiza Operating Company only | First Shot (Austin Chalk) | Gonzales | 1 | 3 | 0 | Jan 1993 – Dec 1995 |
| Gulf Fee O-3-11657 | First United Oil & Gas Corp. only | Liberty, South | Liberty | 1 | 2 | 2 | Jan 1993 – Jul 2026 |
| State O-3-6712 | First United Oil & Gas Corp. only | Liberty, South | — | 1 | 2 | 2 | Jan 1993 – Jul 2026 |
| First Wichita National Bank O-13-25384 | Stamper Operating Co., Inc. only | Jack County Regular | Jack | 1 | 1 | 45 | Jan 1993 – Oct 1994 |
| First National Baldwin Unit G-6-152799 | Eqv Operating LLC only | Carthage (Cotton Valley) | Panola | 1 | 0 | 790K | May 1994 – Jul 2026 |
| First National Baldwin Unit G-6-150589 | Eqv Operating LLC only | Carthage, S. (Travis Peak, Up.) | Panola | 1 | 0 | 52.2K | Mar 1994 – Jul 2026 |
| Caraway-Adcock O-1-13111 | Marathon Oil Company only | First Shot (Austin Chalk) | Gonzales | 1 | 0 | 0 | Jan 1993 – Feb 1993 |
| First National Baldwin Unit G-6-148258 | Eqv Operating LLC only | Carthage (Cotton Valley) | Panola | 1 | 0 | 1.21M | Jan 1994 – Jul 2026 |
| First National Bank-Baldwin Unit G-6-98793 | Diversified Production LLC only | Carthage (Cotton Valley) | Panola | 1 | 0 | 892K | Jan 1993 – Jul 2026 |
| First National Bank-Baldwin Unit G-6-89091 | Sheridan Production Co III, LLC only | Carthage (Cotton Valley) | Panola | 1 | 0 | 985K | Jan 1993 – Dec 2024 |
| First Natl BK Baldwin Unit No. 1 G-6-30013 | Chevron U. S. A. Inc. only | Carthage (Pettit, Lower Gas) | — | 1 | 0 | 0 | Jan 1993 – May 1994 |
| Thompson "A" O-1-13139 | First Rock, Inc. only | Pearsall (Austin Chalk) | Frio | 1 | 0 | 0 | Jan 1993 – Jul 2026 |
| Kaufman, Gastar Fridkin, Ltd. G-5-216085 | First Source Gas, LP only | Wildcat | Leon | 1 | 0 | 0 | Aug 2005 – Nov 2005 |
| E.E. Smith Unit 3 O-1-13152 | Modern Exploration, Inc. only | First Shot (Austin Chalk) | Gonzales | 1 | 0 | 0 | Jan 1993 – Jul 2026 |
| Belin Trust "A" G-5-192332 | First Source Texas, Inc. only | Wildcat | Leon | 1 | 0 | 0 | Mar 2002 – Jun 2003 |
| Wintershall-Lynch O-1-13178 | Williams, Clayton Energy, Inc. only | First Shot (Austin Chalk) | Karnes | 1 | 0 | 0 | Jan 1993 – Jul 1993 |
| Haley, Mary O-1-13198 | Bes, Environmental Services,inc. only | First Shot (Austin Chalk) | Gonzales | 2 | 0 | 0 | Jan 1993 – Jul 2026 |
| Guzman G-4-285182 | Escudo Oil & Gas, LLC only | Coastal, E. (Rincon First Sand) | Hidalgo | 1 | 0 | 712 | Jul 2018 – Jul 2026 |
| Mejia Unit G-4-279807 | Firstrike Energy Corporation only | Riverside (6750) | Nueces | 1 | 0 | 407K | Jan 2016 – Oct 2017 |
| Engleman "A" G-4-268935 | Firstrike Energy Corporation only | Wildcat | Hidalgo | 1 | 0 | 0 | Oct 2011 – Jan 2014 |
| Tom Crews G-4-263516 | First Rock, Inc. only | Reyes (2500) | Duval | 1 | 0 | 0 | Feb 2011 – Aug 2024 |
| Wheat-Paramount O-1-13247 | Presidio Exploration, Inc. only | First Shot (Austin Chalk) | Karnes | 1 | 0 | 0 | Jan 1993 – Aug 1993 |
| Kleberg, R J Jr TR Viboras Past G-4-262878 | EOG Resources, Inc. only | Viboras (Massive First 5, Viii) | Brooks | 1 | 0 | 147K | Dec 2010 – Sep 2019 |
| Viboras Field Gas Unit No. 1 G-4-262778 | EOG Resources, Inc. only | Viboras ( Massive First East) | Brooks | 1 | 0 | 0 | Jul 2011 – Nov 2011 |
| Wilke SWD O-1-13265 | Mid River Midstream LLC only | First Shot (Austin Chalk) | Karnes | 1 | 0 | 0 | Jan 1993 – Jul 2026 |
| Coates Ranch SWD O-1-13269 | Presidio Exploration, Inc. only | First Shot (Austin Chalk) | Wilson | 1 | 0 | 0 | Jan 1993 – Aug 1993 |
| Coates Ranch-Paramount -A- O-1-13289 | Presidio Exploration, Inc. only | First Shot (Austin Chalk) | Karnes | 1 | 0 | 0 | Jan 1993 – Aug 1993 |
| City H & F Properties G-4-255130 | Firstrike Energy Corporation only | Airport (Morris) | Nueces | 1 | 0 | 714K | Jan 2010 – Feb 2016 |
| Welder G-4-243850 | Firstrike Energy Corporation only | Wildcat | San Patricio | 1 | 0 | 0 | Jul 2008 – Mar 2013 |
| Welder, R. H. G-4-243666 | Firstrike Energy Corporation only | Wildcat | San Patricio | 1 | 0 | 0 | Aug 2008 – Apr 2013 |
| Robinson-Barker O-1-13318 | Marathon Oil Company only | First Shot (Austin Chalk) | Gonzales | 1 | 0 | 0 | Jan 1993 – Feb 1993 |
| Hassell O-1-13326 | Columbia Gas Development Corp. only | First Shot (Austin Chalk) | Wilson | 1 | 0 | 0 | Jan 1993 – Jan 1993 |
| City H & F Properties G-4-206570 | Firstrike Energy Corporation only | Clarkwood, S. (Watson) | Nueces | 1 | 0 | 470K | Jul 2004 – Feb 2016 |
| Bell-Sample O-1-13343 | Marathon Oil Company only | First Shot (Austin Chalk) | Gonzales | 1 | 0 | 0 | Jan 1993 – Feb 1993 |
| City H & F Properties G-4-206414 | Firstrike Energy Corporation only | Clarkwood, S. (Moore) | Nueces | 1 | 0 | 334K | May 2004 – Feb 2016 |
| Escobar G-4-181294 | Fargo Oil & Gas, LLC only | Capricorn (First Queen City) | Starr | 1 | 0 | 83.9K | Feb 2001 – Jul 2026 |
| First Lockhaart National Bank O-1-13391 | International Western Oil Corp. only | Luling-Branyon | Caldwell | 1 | 0 | 0 | Jan 1993 – Mar 2008 |