| Edinburg Unit G-4-168718 | Royal Production Company, Inc. only | Edinburg, S. (Marks 11030) | Hidalgo | 1 | 194K | 7.22M | Jan 1998 – Mar 2011 |
| Edinburg Unit G-4-197653 | Royal Production Company, Inc. only | Edinburg, S. (Marks 11030) | Hidalgo | 1 | 115K | 9.6M | Sep 2003 – Sep 2020 |
| Windham 103 G-9-199526 | EOG Resources, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 96.1K | 3.15M | Sep 2003 – Apr 2026 |
| Vaquillas-Borrego G-4-189391 | Killam Oil Co., Ltd. only | Zwebb (10350) | Webb | 1 | 92K | 3.44M | May 2002 – Aug 2016 |
| Windham-Clark 103 Unit G-9-214430 | Southwest Royalties, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 83.4K | 1.13M | Feb 2005 – Mar 2026 |
| Cleveland 103 G-14-280898 | BE Anadarko II, LLC only | Lipscomb, S.E. (Cleveland) | Lipscomb | 1 | 77.1K | 711K | Jun 2014 – Apr 2026 |
| Windham 103 G-9-205835 | EOG Resources, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 73.9K | 1.44M | May 2004 – Apr 2026 |
| Slator Ranch "A" G-4-175017 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 64.7K | 3.15M | Nov 1999 – Apr 2026 |
| Slator Ranch "A" G-4-175486 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 62.3K | 4.16M | Dec 1999 – Apr 2026 |
| Edinburg Unit G-4-199312 | Royal Production Company, Inc. only | Edinburg, S. (Marks 11030) | Hidalgo | 1 | 61.7K | 8.05M | Nov 2003 – Jul 2014 |
| Slator Ranch "A" G-4-173763 | Mountain V Texas, LLC only | Zwebb (10350) | Zapata | 1 | 56.7K | 4.17M | Jul 1999 – Apr 2026 |
| Georgia Mae Grahmann Gas Unit 2 G-2-101606 | Capital Star Oil & Gas, Inc. only | Jansky (10350) | Lavaca | 1 | 52.5K | 1.46M | Jan 1993 – Apr 2026 |
| BMT/K&H "B" G-4-178052 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 52.3K | 3.8M | Jul 2000 – Apr 2026 |
| Vaquillas-Borrego G-4-188871 | Killam Oil Co., Ltd. only | Zwebb (10350) | Webb | 1 | 49.9K | 3.3M | May 2002 – Aug 2016 |
| BMT/K&H G-4-183460 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 49.2K | 3.52M | May 2001 – Aug 2010 |
| Cleveland 103 G-14-280899 | BE Anadarko II, LLC only | Lipscomb, S.E. (Cleveland) | Lipscomb | 1 | 48.6K | 360K | Mar 2014 – Apr 2026 |
| BMT/K & H "B" G-4-176451 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 48.4K | 5.27M | Mar 2000 – Apr 2026 |
| Cleveland 103 G-14-280900 | BE Anadarko II, LLC only | Lipscomb, S.E. (Cleveland) | Lipscomb | 1 | 48.4K | 370K | Mar 2014 – Apr 2026 |
| Cleveland 103 G-14-278478 | BE Anadarko II, LLC only | Lipscomb, S.E. (Cleveland) | Lipscomb | 1 | 48K | 423K | Mar 2014 – Apr 2026 |
| Kincaid 103 G-14-278953 | Presidio Petroleum LLC only | Lipscomb, S.E. (Cleveland) | Hemphill | 1 | 47.2K | 166K | Nov 2015 – Apr 2026 |
| BMT/K&H "B" G-4-183475 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 39.2K | 2.73M | Jun 2001 – Apr 2026 |
| BMT/K&H G-4-181384 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 37.2K | 6.31M | Feb 2001 – Apr 2026 |
| State Tract 352 G-4-195071 | Cabot Oil & Gas Corporation only | Red Fish Bay, North (10350) | San Patricio | 1 | 36.2K | 5.43M | May 2003 – Aug 2004 |
| Dougherty Properties -C- G-2-106806 | Hughes, Dan A. Company, L.P. only | Dougherty Ranch (10350) | Bee | 1 | 34.4K | 1.78M | Jan 1993 – Feb 2019 |
| BMT/K&H G-4-177527 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 33.7K | 8.56M | May 2000 – Apr 2026 |
| Cabezon G-4-245457 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 33.5K | 1.46M | Nov 2007 – Apr 2026 |
| Thomasma, Ray J. G-4-198842 | Hilcorp Energy Company only | Zwebb (10350) | Zapata | 1 | 32.7K | 4.08M | Nov 2003 – Apr 2026 |
| Penn, Stella G-1-154937 | Varas Energy Operating Company, only | Hostetter (Wilcox 10300) | McMullen | 1 | 32.6K | 6.21M | May 1995 – Jun 2001 |
| Thomasma, Ray J. G-4-197050 | Hilcorp Energy Company only | Zwebb (10350) | Zapata | 1 | 31K | 4.87M | Sep 2003 – Apr 2026 |
| Cabezon G-4-189382 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 30K | 810K | Feb 2002 – Apr 2026 |
| Spice Gas Unit G-1-130821 | Varas Energy Operating Company, only | Hostetter (Wilcox 10300) | McMullen | 1 | 29.1K | 6.72M | Jan 1993 – Apr 2026 |
| Cabezon G-4-237464 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 27.8K | 656K | Apr 2008 – Apr 2026 |
| Keller G-2-217085 | Vision Oil and Gas LLC only | Cannan, E. (10300 Wilcox) | Bee | 1 | 25.5K | 1.23M | Nov 2005 – Aug 2022 |
| Cabezon G-4-188849 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 24.6K | 664K | Apr 2002 – Apr 2026 |
| Cabezon G-4-246190 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 24.2K | 485K | Oct 2008 – Apr 2026 |
| BMT/K&H G-4-185467 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 23.7K | 3.65M | Aug 2001 – Apr 2026 |
| Vaquillas-Borrego G-4-187514 | Killam Oil Co., Ltd. only | Zwebb (10350) | Webb | 1 | 22.6K | 3.84M | Feb 2002 – Jan 2016 |
| McGrath G-4-182944 | Killam Oil Co., Ltd. only | Zwebb (10350) | Webb | 1 | 22K | 7.01M | Apr 2001 – Apr 2026 |
| Vaquillas-Borrego G-4-219603 | Killam Oil Co., Ltd. only | Zwebb (10350) | Webb | 1 | 21.7K | 931K | May 2006 – Jan 2016 |
| State Tract 838 G-4-204361 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 21.6K | 1.34M | Aug 2004 – Apr 2026 |
| Vaquillas-Borrego G-4-191511 | Killam Oil Co., Ltd. only | Zwebb (10350) | Webb | 1 | 21.1K | 3.19M | Sep 2002 – Aug 2016 |
| McGrath G-4-200375 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 20.7K | 2.39M | Mar 2004 – Aug 2018 |
| Slator Ranch "B" G-4-175528 | Mountain V Texas, LLC only | Zwebb (10350) | Zapata | 1 | 20.4K | 1.84M | Jan 2000 – Apr 2026 |
| Edinburg Unit G-4-295698 | Royal Production Company, Inc. only | Edinburg, S. (Marks 11030) | Hidalgo | 1 | 19.8K | 801K | Jul 2023 – Apr 2025 |
| McGrath G-4-183853 | Mountain V Texas, LLC only | Zwebb (10350) | Zapata | 1 | 19.5K | 3.61M | Jun 2001 – Apr 2026 |
| BMT/K&H G-4-184520 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 19K | 4.24M | Jul 2001 – Apr 2026 |
| Mc Grath G-4-189425 | Mountain V Texas, LLC only | Zwebb (10350) | Zapata | 1 | 18.8K | 3.85M | Jun 2002 – Apr 2026 |
| Zahradnick, Alfred G-3-91859 | Magnum Producing, LP only | Ramsey, E. (Wilcox 10300) | Colorado | 1 | 18.1K | 1.23M | Jan 1993 – Feb 2026 |
| Bravo 103 G-10-43019 | Chisos Operating, Inc. only | Lockridge (Ellenburger 18600) | Ward | 1 | 18K | 10.8M | Jan 1993 – Apr 2026 |
| BMT/K&H G-4-178588 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 17.9K | 3.99M | Aug 2000 – Apr 2026 |