| Drapalla, Ignatz O-2-377 | Finaly Resources LLC only | Cottonwood Creek, South | De Witt | 1 | 20.4K | 1.19K | by Jan 1993 – Aug 2005 |
| Piloncillo G-1-267079 | TBM Catarina, LLC only | Briscoe Ranch (Eagleford) | Webb | 1 | 20.3K | 560K | Oct 2011 – Aug 2026 |
| Eliminator O-9-14942 | Apache Corporation only | Hondo (Fusselman) | Irion | 1 | 20.2K | 0 | Nov 1999 – Sep 2003 |
| Byrd, K.W. O-1-10561 | Enr Operating, LLC only | Marcelina Creek (Austin Chalk) | Wilson | 1 | 20.2K | 163 | by Jan 1993 – Mar 2020 |
| Gilfillian, Hollis G-3-176658 | Magnum Producing, LP only | Angelina, E. (Discorbis 11,600) | Jefferson | 1 | 20.1K | 10.3M | Jan 2000 – Apr 2008 |
| Stoeger G-3-174917 | EOG Resources, Inc. only | Angelina (11,800) | Jefferson | 1 | 20K | 848K | May 1999 – Jan 2000 |
| Fina Etal O-11-68021 | Krocan Energy Corporation only | Duck Creek (Tannehill) | Dickens | 1 | 19.9K | 0 | Oct 1998 – Apr 2018 |
| Johnson "10" O-10-35741 | Propel Energy, LLC only | Pinal Dome (Cherry Canyon) | Loving | 1 | 19.9K | 33.6K | Feb 1998 – Jun 2009 |
| Dixie Mortgage-Pawelek Gas Unit G-4-226937 | STX Operating Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 19.8K | 2.17M | Dec 2006 – Aug 2026 |
| Salinas, Fausto et Al G-4-185899 | Petrovybe Opco LLC only | Samano (Massive 7200) | Starr | 1 | 19.8K | 2.03M | Oct 2001 – Jul 2008 |
| Piloncillo G-1-269200 | TBM Catarina, LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 19.8K | 290K | Feb 2013 – Apr 2026 |
| Petty Ranch G-1-186008 | White Oak Operating Company LLC only | Catarina, SW. (San Miguel-Gas) | Webb | 1 | 19.7K | 354K | Oct 2001 – Feb 2016 |
| Frost, Julia O-3-11660 | Rocinante only | Pierce Junction | Harris | 2 | 19.6K | 146 | by Jan 1993 – Aug 2017 |
| Piloncillo G-1-283025 | TBM Catarina, LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 19.5K | 339K | May 2017 – Jul 2026 |
| Piloncillo G-1-268405 | TBM Catarina, LLC only | Briscoe Ranch (Eagleford) | Webb | 1 | 19.3K | 584K | Sep 2012 – Aug 2026 |
| Johnson "40" O-10-34594 | WPX Energy Permian, LLC only | Pinal Dome, Central (Delaware) | Loving | 2 | 19.3K | 31.3K | Jul 1995 – Feb 2015 |
| Schmidt, Bettie "S" O-1-1882 | Texas Secondary Oil Corporation only | Taylor-Ina | Medina | 16 | 19.2K | 37 | by Jan 1993 – Aug 2026 |
| Wilson, J. N. "P" O-1-1879 | Texas Secondary Oil Corporation only | Taylor-Ina | Medina | 12 | 19.2K | 45 | by Jan 1993 – Aug 2026 |
| Btlt A G-4-275912 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Starr | 1 | 19.2K | 1.06M | Jan 2015 – Aug 2026 |
| Estopinal, Joyce H. O-3-18195 | Crudecorp, Inc. only | Mykawa New | Harris | 2 | 19.1K | 30.1K | by Jan 1993 – Jun 1996 |
| Boston Texas Land & Trust G-4-272980 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 19.1K | 883K | May 2014 – Aug 2026 |
| Aztec GE O-1-17202 | Texas Secondary Oil Corporation only | Taylor-Ina | Medina | 20 | 19K | 0 | May 2013 – Aug 2026 |
| Biry Tract II O-1-4541 | Texas Secondary Oil Corporation only | Taylor-Ina | Medina | 19 | 19K | 21 | by Jan 1993 – Aug 2026 |
| Las Clavellinas Ranch 36 G-4-165084 | Three C Exploration, LLC only | Zapata, SE. (Wilcox) | Zapata | 1 | 18.9K | 4.91M | Oct 1997 – Jul 2023 |
| Btlt G-4-243258 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Starr | 1 | 18.9K | 714K | Jul 2008 – Aug 2026 |
| Rod, R.J. (Bob) -A- O-1-12393 | Sabinal Resources, Inc. only | Pearsall (Austin Chalk) | Dimmit | 2 | 18.8K | 590 | by Jan 1993 – Nov 2007 |
| Stoeger G-3-176826 | EOG Resources, Inc. only | Angelina (10700) | Jefferson | 1 | 18.8K | 696K | Dec 1999 – Oct 2000 |
| Sinai B O-11-71175 | Texland Petroleum, L.P. only | Seminole Draw (San Andres) | Gaines | 1 | 18.8K | 0 | Oct 2021 – Aug 2026 |
| Boston Texas Land & Trust G-4-286358 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 18.8K | 2.91M | Apr 2019 – Aug 2026 |
| Hopkins, M. A. Gas Unit G-4-233986 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 18.7K | 1.63M | Dec 2007 – Aug 2026 |
| Volz, Fred W. Sr. Unit G-4-171032 | Fina Oil & Chemical Company only | Tabasco (T) | Hidalgo | 1 | 18.6K | 266K | Sep 1998 – Sep 1999 |
| Neumann, V. H. -B- O-1-1959 | Production Resources, Inc. only | Taylor-Ina | Medina | 28 | 18.6K | 29 | by Jan 1993 – Aug 2026 |
| Deck, Elmina O-14-2088 | Linn Operating, Inc. only | Horizon (Cleveland) | Ochiltree | 3 | 18.6K | 147K | by Jan 1993 – Apr 2011 |
| Boston Texas Land & Trust G-4-267196 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 18.5K | 1.47M | Apr 2012 – Aug 2026 |
| Piloncillo G-1-267063 | TBM Catarina, LLC only | Briscoe Ranch (Eagleford) | Webb | 1 | 18.5K | 490K | Mar 2012 – Aug 2026 |
| Davis, W.J. G-4-131827 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 18.5K | 1.63M | by Jan 1993 – Aug 2026 |
| Piloncillo G-1-269140 | TBM Catarina, LLC only | Briscoe Ranch (Eagleford) | Webb | 1 | 18.4K | 342K | Mar 2013 – Aug 2026 |
| Hoefelmeyer O-1-12986 | Xeric Oil & Gas Corporation only | Marcelina Creek (Austin Chalk) | Wilson | 1 | 18.4K | 34 | by Jan 1993 – Feb 2001 |
| State of Texas Unit G-4-9423 | Besco Operating, L.P. only | Blind Pass (Marginulina-Frio) | Aransas | 1 | 18.4K | 1.73M | Dec 1995 – Feb 2025 |
| Petty, O. S. G-1-95343 | White Oak Operating Company LLC only | Catarina, SW. (San Miguel-Gas) | Webb | 1 | 18.4K | 664K | by Jan 1993 – Feb 2016 |
| Cazey O-3-23784 | Finaly Resources LLC only | Giddings (Buda) | Robertson | 1 | 18.4K | 0 | Dec 1999 – Jul 2004 |
| Brann, Regina G-4-101979 | Cantera Operating, LLC only | Jeffress (Vicksburg W) | Hidalgo | 1 | 18.3K | 3.31M | by Jan 1993 – Nov 2009 |
| Davis, W.J. G-4-63756 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 18.2K | 4.4M | by Jan 1993 – Aug 2026 |
| Pawelek Unit O-1-14197 | First Light Operating, LLC only | Marcelina Creek (Austin Chalk) | Wilson | 1 | 18.2K | 6.4K | Mar 1998 – Nov 2009 |
| Piloncillo G-1-268880 | TBM Catarina, LLC only | Briscoe Ranch (Eagleford) | Webb | 1 | 18.1K | 269K | Mar 2013 – Aug 2026 |
| Belle Ferguson Gas Unit G-4-147404 | Totalfinaelf E&P USA Inc only | Belle Ferguson (Lo. Frio Cons.) | Hidalgo | 1 | 18.1K | 1.34M | Dec 1993 – May 2002 |
| UNIV5 SABRINA24 O-9-16144 | Pbex Operations, LLC only | Sheep Mountain (Consolidated) | Crockett | 1 | 18.1K | 47.1K | Nov 2006 – Sep 2019 |
| Barina O-3-8322 | Warrior Resources Inc. only | Cistern, North | Bastrop | 1 | 18.1K | 320 | by Jan 1993 – Dec 2019 |
| Brann, Regina G-4-170037 | Merit Energy Company only | Jeffress (Vicksburg T) | Hidalgo | 1 | 18K | 1.64M | Sep 1998 – Mar 2000 |
| Briscoe "F" O-1-6819 | SM Energy Company only | Catarina, SW. (San Miguel) | Dimmit | 1 | 17.9K | 45K | by Jan 1993 – Sep 2012 |