| Briscoe Catarina East G-1-272346 | SM Energy Company only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 42.7K | 430K | Aug 2013 – Apr 2020 |
| Theiss et al Gas Unit G-4-207563 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 42.7K | 2.76M | Jan 2005 – Aug 2026 |
| Labus O-1-10634 | Virtex Operating Company, Inc. only | Marcelina Creek (Austin Chalk) | Wilson | 1 | 42.6K | 319 | by Jan 1993 – Dec 2017 |
| Wiesehan-Walker Gas Unit G-4-136226 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 42.5K | 5.71M | by Jan 1993 – Aug 2026 |
| Piloncillo G-1-269711 | TBM Catarina, LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 42.2K | 562K | Jan 2013 – Aug 2026 |
| Cardinal 4 O-10-45003 | Apache Corporation only | Two Georges (Bone Spring) | Loving | 1 | 42.2K | 200K | Aug 2013 – Feb 2014 |
| Brann, Regina G-4-175353 | Cantera Operating, LLC only | Jeffress (Vicksburg T) | Hidalgo | 1 | 42.1K | 4.64M | Nov 1999 – Sep 2013 |
| Hopkins, M. A. Gas Unit G-4-49497 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 42K | 7.64M | by Jan 1993 – Aug 2026 |
| Piloncillo G-1-278293 | TBM Catarina, LLC only | Briscoe Ranch (Eagleford) | Webb | 1 | 42K | 1.05M | Feb 2015 – Aug 2026 |
| Briscoe Cochina East Ranch G-1-274649 | Anadarko E&P Onshore LLC only | Briscoe Ranch (Eagleford) | La Salle | 1 | 41.9K | 94K | Aug 2014 – Dec 2014 |
| Piloncillo G-1-269935 | TBM Catarina, LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 41.8K | 234K | May 2013 – Aug 2026 |
| State Tract 49 G-4-106090 | White Marlin Operating Co, LLC only | Encinal Channel (FB-a, N-1,2,3) | Nueces | 1 | 41.8K | 2.33M | by Jan 1993 – Dec 2024 |
| Piloncillo G-1-270577 | TBM Catarina, LLC only | Briscoe Ranch (Eagleford) | Webb | 1 | 41.7K | 734K | Mar 2013 – Aug 2026 |
| China Draw O-10-39011 | Atoka Operating Permian, LLC only | Bennett Kohler (Ellenburger) | Sterling | 2 | 41.7K | 344K | Oct 2007 – Aug 2016 |
| Wilson, J. N. -C- O-1-2032 | Klaeger Operating Company Ii,llc only | Taylor-Ina | Medina | 16 | 41.6K | 20 | by Jan 1993 – Aug 2026 |
| Piloncillo G-1-270673 | TBM Catarina, LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 41.6K | 278K | Apr 2013 – Aug 2026 |
| Dixie Mortgage-Hopkins Gas Unit G-4-72785 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 41.6K | 2.66M | by Jan 1993 – Aug 2026 |
| Boston Texas Land & Trust G-4-10989 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 41.6K | 3.38M | by Jan 1993 – Aug 2026 |
| Slick, T.B. Estate G-4-142819 | Fina Oil & Chemical Company only | Hinde (Vicksburg 20) | Starr | 1 | 41.5K | 1.47M | by Jan 1993 – Feb 1999 |
| Piloncillo G-1-271365 | TBM Catarina, LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 41.4K | 500K | Jun 2013 – Aug 2026 |
| Salinas, J. O-2-8749 | Big Lake Corporation only | Cologne (4650) | Victoria | 1 | 41.3K | 17.3K | Sep 2002 – Aug 2026 |
| State Tract 52-7 Unit G-4-195038 | Sabco Operating Company only | Encinal Channel (FB-3B, M-4) | Nueces | 1 | 41.2K | 1.22M | Mar 2003 – Jul 2004 |
| Briscoe Cochina East Ranch G-1-268697 | Javelin Energy Partners Mgmt LLC only | Briscoe Ranch (Eagleford) | La Salle | 1 | 41.2K | 588K | Dec 2012 – Aug 2026 |
| Piloncillo G-1-266925 | TBM Catarina, LLC only | Briscoe Ranch (Eagleford) | Webb | 1 | 41.2K | 864K | Sep 2012 – Aug 2026 |
| Piloncillo G-1-271163 | TBM Catarina, LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 41K | 477K | Jun 2013 – Aug 2026 |
| Trappe O-1-9692 | First Light Operating, LLC only | Marcelina Creek (Austin Chalk) | Wilson | 2 | 41K | 12.2K | by Jan 1993 – Jul 2026 |
| Briscoe Catarina West G-1-269512 | Javelin Energy Partners Mgmt LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 40.9K | 644K | Jan 2013 – Aug 2026 |
| Briscoe Catarina North G-1-266939 | Javelin Energy Partners Mgmt LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 40.9K | 444K | Apr 2012 – Aug 2026 |
| Boston Texas Land & Trust G-4-168648 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 40.7K | 3.03M | Mar 1998 – Aug 2026 |
| Svoboda O-1-12328 | Roma Oil and Gas, Inc. only | Marcelina Creek (Buda) | Wilson | 1 | 40.7K | 25 | by Jan 1993 – Dec 2000 |
| Coastal Roche O-2-9852 | Finaly Resources LLC only | Cactus (Frio Massive) | Refugio | 1 | 40.6K | 57.1K | Jul 2011 – Sep 2021 |
| Piloncillo G-1-267081 | TBM Catarina, LLC only | Briscoe Ranch (Eagleford) | Webb | 1 | 40.6K | 1.6M | Jan 2012 – Aug 2026 |
| Laskowski O-1-14156 | Global XRC Corp only | Marcelina Creek (Austin Chalk) | Wilson | 1 | 40.5K | 13K | Jan 1998 – Aug 2016 |
| Piloncillo G-1-269180 | TBM Catarina, LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 40.4K | 604K | Jan 2013 – Aug 2026 |
| Johnson-Cypher Gas Unit G-4-265967 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 40.2K | 857K | Apr 2012 – Aug 2026 |
| McAllen, A.A. G-4-165441 | Totalfinaelf E&P USA Inc only | McAllen Ranch (Vicksburg S, S.) | Hidalgo | 1 | 40K | 1.68M | Aug 1997 – May 1999 |
| Buie, Melvina Unit O-6-13224 | Palrich Oil Corporation only | Lane Chapel, W. (Paluxy B) | Smith | 1 | 40K | 25.8K | Oct 1993 – May 1998 |
| Smith, China O-13-9282 | Briggs & Croker Oil, LLC only | K-M-A | Wichita | 4 | 40K | 134 | by Jan 1993 – Nov 2020 |
| Kalina O-3-24580 | Samson Lone Star, LLC only | Kainer (Yegua 6450) | Colorado | 1 | 40K | 81.2K | Sep 2003 – Aug 2007 |
| Varina O-8-27709 | Sinclair Oil & Gas Company only | Buds Butte (Penn Reef) | Nolan | 1 | 40K | 18.6K | Nov 1995 – Sep 2006 |
| Davis, W. J. "A" G-4-86841 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 39.9K | 1.29M | by Jan 1993 – Aug 2026 |
| Wiesehan-Walker Gas Unit G-4-241952 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 39.8K | 3.94M | Jul 2008 – Aug 2026 |
| Wilson Tertiary Unit O-1-15166 | Texas Secondary Oil Corporation only | Taylor-Ina | Medina | 46 | 39.8K | 0 | Apr 2010 – Aug 2026 |
| Rogers -B- O-1-8836 | Texas Secondary Oil Corporation only | Taylor-Ina | Medina | 21 | 39.6K | 21 | by Jan 1993 – Aug 2026 |
| Brainard 27 O-14-8837 | BE Anadarko II, LLC only | Lipscomb, S.E. (Cleveland) | Hemphill | 1 | 39.6K | 253K | Oct 2012 – Aug 2026 |
| Piloncillo G-1-266132 | TBM Catarina, LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 39.3K | 526K | May 2011 – Aug 2026 |
| Briscoe Catarina North G-1-266938 | Javelin Energy Partners Mgmt LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 39.2K | 443K | Apr 2012 – Aug 2026 |
| Briscoe Catarina N Unit A G-1-274304 | Javelin Energy Partners Mgmt LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 39.2K | 358K | Jul 2014 – Aug 2017 |
| Darwina D. Jamieson G-4-180748 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 39.2K | 867K | Jan 2001 – Aug 2026 |
| Boston Texas Land & Trust G-4-289878 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 39.1K | 2.72M | Mar 2020 – Aug 2026 |