| Tunstill State 55-1-38 Lov G-10-287534 | Pdeh LLC only | Phantom (Wolfcamp) | Loving | 1 | 450K | 1.22M | Dec 2017 – Apr 2026 |
| State Tunstill 56-T2-15X10 G-10-290576 | BPX Operating Company only | Phantom (Wolfcamp) | Reeves | 1 | 343K | 2.82M | Oct 2020 – Apr 2026 |
| Willett Pot Still 5-2C Unit G-10-287273 | Permian Resources Operating, LLC only | Ford, West (Wolfcamp) | Reeves | 1 | 237K | 2.17M | Jan 2019 – Apr 2026 |
| Tunstill State 55-1-38 Lov G-10-275875 | Pdeh LLC only | Sandbar (Bone Spring) | Loving | 1 | 113K | 1.43M | Nov 2013 – Dec 2022 |
| Kleberg, R J Jr TR Stillman G-4-271415 | EOG Resources, Inc. only | Stillman (Deep Cons.) | Kenedy | 1 | 86.9K | 20.7M | Sep 2013 – Jun 2025 |
| Tunstill State 55-1-38 Lov G-10-276316 | Pdeh LLC only | Sandbar (Bone Spring) | Loving | 1 | 80.3K | 1.08M | Jun 2014 – Oct 2021 |
| De Austin-Castillo GU G-4-164672 | Merit Energy Company only | Jeffress, NE. (T, Lo.-Fb,a) | Hidalgo | 1 | 64.9K | 3.84M | Aug 1997 – Apr 2026 |
| Kleberg, R J Jr TR Stillman G-4-286617 | EOG Resources, Inc. only | Stillman (Deep Cons.) | Kenedy | 1 | 46K | 732K | Aug 2018 – Dec 2020 |
| De Austin-Castillo Gas Unit G-4-163815 | Merit Energy Company only | Jeffress, NE. (T, Lo.-Fb,a) | Hidalgo | 1 | 42.1K | 3.56M | May 1997 – Apr 2026 |
| BP-Stockstill G-3-254768 | Proline Energy Resources Inc only | Bessmay (Wilcox Cons) | Jasper | 1 | 36K | 179K | Aug 2009 – Apr 2026 |
| De Austin-Castillo GU G-4-165693 | Merit Energy Company only | Jeffress, NE. (T, Lo.-Fb,a) | Hidalgo | 1 | 34.8K | 2.34M | Oct 1997 – Apr 2026 |
| Acock BP Johnson 21 G-3-285577 | Shoco Production LLC only | Castillo, West (Y-2) | Jasper | 1 | 33.3K | 52K | Dec 2018 – Mar 2026 |
| Talbot-Fuller Canyon Unit G-10-151298 | Costilla Petroleum Corporation only | Talbot (Canyon) | Howard | 1 | 28.2K | 91.8K | Aug 1994 – Feb 1995 |
| Santa FE Ranch Mula Pasture G-4-200372 | Hughes, Dan A. Company, L.P. only | Stillman (Deep Cons.) | Kenedy | 1 | 27.7K | 8.31M | Mar 2004 – Apr 2026 |
| Santa FE Ranch Mula Pasture G-4-286736 | Hughes, Dan A. Company, L.P. only | Stillman (Deep Cons.) | Kenedy | 1 | 27.5K | 13.4M | Feb 2019 – Apr 2026 |
| Kleberg, R.j.jr.tr.stillman G-4-269049 | EOG Resources, Inc. only | Tordilla (Deep Cons.) | Willacy | 1 | 22.5K | 740K | Apr 2019 – Jun 2025 |
| Kleberg, R J Jr TR Stillman G-4-261761 | EOG Resources, Inc. only | Tordilla (Deep Cons.) | Willacy | 1 | 22.2K | 2.91M | Feb 2016 – Jun 2024 |
| Still, W.W. GU #1 G-6-145073 | Faulconer Energy, LLC only | Rosewood (Cotton Valley) | Upshur | 1 | 21.3K | 1.77M | Mar 1993 – Apr 2026 |
| De Austin-Castillo Gas Unit G-4-200050 | Merit Energy Company only | Jeffress, NE. (T, Lo.-Fb,a) | Hidalgo | 1 | 20.5K | 1.47M | Feb 2004 – Apr 2026 |
| Castillo-Flores GU G-4-174002 | Merit Energy Company only | Jeffress, NE. (Vicksburg T) | Hidalgo | 1 | 20.2K | 4.41M | Jul 1999 – Apr 2026 |
| Kleberg, R J Jr TR Stillman G-4-267364 | EOG Resources, Inc. only | Stillman (Deep Cons.) | Kenedy | 1 | 19.3K | 7.74M | Mar 2012 – Jun 2022 |
| Hughes, M. B. G-3-180120 | Jay Management Company, LLC only | Castillo (Yegua #5) | Jasper | 1 | 15.7K | 308K | Nov 2000 – May 2022 |
| Castillo Deep Gas Unit G-4-164146 | Merit Energy Company only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 15.4K | 1.52M | May 1997 – Dec 2002 |
| Castillo-Flores GU G-4-176036 | Merit Energy Company only | Jeffress, NE. (T, Lo.-Fb,a) | Hidalgo | 1 | 15.4K | 1.65M | Nov 1999 – Apr 2026 |
| Santa FE Ranch Mula Pasture G-4-291590 | Hughes, Dan A. Company, L.P. only | Stillman (Deep Cons.) | Kenedy | 1 | 14K | 3.73M | Jul 2021 – Apr 2026 |
| Kleberg, R J Jr TR Stillman G-4-238515 | EOG Resources, Inc. only | Tordilla (Deep Cons.) | Willacy | 1 | 13.7K | 2.07M | Jun 2008 – Oct 2020 |
| Mula Stillman Unit No. 1 G-4-222929 | EOG Resources, Inc. only | Stillman (Deep Cons.) | Kenedy | 1 | 12.7K | 4.5M | Sep 2006 – Nov 2025 |
| Kleberg, R J Jr TR Stillman G-4-197520 | EOG Resources, Inc. only | Tordilla (Deep Cons.) | Willacy | 1 | 12.1K | 1.1M | Aug 2003 – Dec 2024 |
| De Austin-Castillo G-4-116053 | El Paso E & P Company, L. P. only | Jeffress, NE. (T, Lo.-Fb,a) | Hidalgo | 1 | 10.8K | 732K | Jan 1993 – Jul 1999 |
| Castillo-Flores GU G-4-174498 | Merit Energy Company only | Jeffress, NE. (T, Lo.-Fb,a) | Hidalgo | 1 | 10.8K | 3.46M | Aug 1999 – Aug 2014 |
| Bynum "46" G-10-153226 | Costilla Petroleum Corporation only | Talbot (Canyon) | Howard | 1 | 10.7K | 43.7K | Jan 1995 – Sep 1995 |
| Still, W.W. GU #1 G-6-148336 | Faulconer Energy, LLC only | Rosewood (Cotton Valley) | Upshur | 1 | 10.4K | 655K | Jan 1994 – Apr 2026 |
| Still, W.W. GU #1 G-6-175720 | Faulconer Energy, LLC only | Rosewood (Cotton Valley) | Upshur | 1 | 9.63K | 1.06M | Oct 1999 – Apr 2026 |
| Castillo Deep Gas Unit G-4-170649 | EP Energy E&P Company, L.P. only | Jeffress, NE. (T, Lo.-Fb,a) | Hidalgo | 1 | 9.42K | 964K | Apr 1998 – Aug 2011 |
| Castillo Deep Gas Unit G-4-194655 | Merit Energy Company only | Jeffress, E. (Vicksburg S) | Hidalgo | 1 | 9.3K | 1.21M | Jan 2003 – Apr 2026 |
| Arco Hughes G-3-175622 | Jay Management Company, LLC only | Castillo (Yegua #5) | Jasper | 1 | 8.73K | 617K | Dec 1999 – May 2022 |
| Santa FE Ranch Mula Pasture G-4-282022 | Hughes, Dan A. Company, L.P. only | Stillman (Deep Cons.) | Kenedy | 1 | 8.7K | 3.05M | Jan 2017 – Apr 2026 |
| Kleberg, R J Jr TR Stillman G-4-164148 | EOG Resources, Inc. only | Tordilla (Deep Cons.) | Willacy | 1 | 8.61K | 10.4M | Jun 1997 – Oct 2020 |
| Kleberg, R J Jr TR Stillman G-4-259643 | EOG Resources, Inc. only | Tordilla (Deep Cons.) | Kenedy | 1 | 7K | 4.64M | Jan 2011 – Jun 2024 |
| Boyd, F. W. G-2-77077 | Costilla Energy, Inc. only | Person (Edwards) | Karnes | 1 | 6.95K | 184K | Jan 1993 – Jun 1999 |
| Castillo Deep GU G-4-178386 | Merit Energy Company only | Jeffress, NE. (Vicksburg T) | Hidalgo | 1 | 6.79K | 1.59M | May 2000 – Nov 2020 |
| Castillo Flores GU G-4-274930 | Merit Energy Company only | Jeffress, E. (Vicksburg K) | Hidalgo | 1 | 6.2K | 572K | May 2014 – Feb 2023 |
| Still, W.W. GU #1 G-6-178177 | Faulconer Energy, LLC only | Rosewood (Cotton Valley) | Upshur | 1 | 6.11K | 780K | Apr 2000 – Apr 2026 |
| Holmes, M.S. G-4-152889 | Cimarron Engineering Corp. only | Alice (Stillwell 5340) | Jim Wells | 1 | 5.43K | 683K | Nov 1994 – Nov 2001 |
| Wolters G-2-239192 | Chisholm Oil & Gas, LC only | Sliva, Southwest (Stillwell) | Bee | 1 | 5.42K | 56.6K | Jun 2008 – Apr 2009 |
| Still, W.W. GU #1 G-6-109954 | Faulconer Energy, LLC only | Rosewood (Cotton Valley) | Upshur | 1 | 5.21K | 795K | Jan 1993 – Apr 2026 |
| Kleberg, R J Jr TR Stillman G-4-257983 | EOG Resources, Inc. only | Tordilla (Deep Cons.) | Willacy | 1 | 4.88K | 478K | Aug 2010 – Apr 2022 |
| Santa FE Ranch Mula Pasture G-4-280852 | Hughes, Dan A. Company, L.P. only | Stillman (Deep Cons.) | Kenedy | 1 | 4.66K | 494K | Jun 2016 – Dec 2021 |
| Arco Castillo G-3-188250 | Jay Management Company, LLC only | Castillo (Yegua #5) | Jasper | 1 | 4.55K | 561K | Apr 2002 – Jun 2018 |
| Urban "A" G-2-147656 | Costilla Petroleum Corporation only | Pridham Lake (4210) | Victoria | 1 | 4K | 79.1K | Nov 1993 – Sep 1995 |