| Broussard Trust O-3-20327 | Remora Management, LLC only | Magnet Withers | Wharton | 1 | 328K | 307K | by Jan 1993 – Aug 2026 |
| Security Bank & Trust Co. O-3-2610 | McGowan Working Partners, Inc. only | Lane City | Wharton | 5 | 111K | 53.5K | by Jan 1993 – Jan 2015 |
| Thompson Unit O-3-11549 | Long Trusts, The only | Daboval (Frio 5180) | Wharton | 1 | 36.5K | 43 | by Jan 1993 – Jun 2009 |
| Ammann, Homer Trust G-3-131950 | Faulconer Energy, LLC only | McFarlan (Cook Mountain) | Wharton | 1 | 32.6K | 6.26M | by Jan 1993 – Aug 2026 |
| E.A. Weinheimer-Grady Trust Unit G-3-139930 | Crimson Exploration Inc. only | Alwan (Cook Mountain) | Wharton | 1 | 24.1K | 534K | Jun 1993 – Mar 2005 |
| Armour Trust, et Al G-3-279821 | Hilcorp Energy Company only | Phase Four (9560 Yegua) | Wharton | 1 | 23.8K | 436K | May 2015 – Jan 2017 |
| Stovall, Guy F. Trust G-3-149968 | Viper S.W.D., LLC only | Mott Slough (Yegua) | Wharton | 1 | 23.1K | 441K | Jun 1994 – Sep 2022 |
| Wilson Family Trust G-3-176900 | Howard Exploration, Inc. only | Hillje (Frio 5998) | Wharton | 1 | 15.6K | 1.64M | Apr 2000 – Oct 2016 |
| Armour Trust et Al G-3-260044 | Hilcorp Energy Company only | Phase Four (9560 Yegua) | Wharton | 1 | 13.8K | 360K | Jul 2010 – Jun 2016 |
| CML Trust O-3-28098 | MB Energy, LLC only | Shanghai (5600 Frio) | Wharton | 1 | 13.7K | 10.9K | Jan 2023 – Jan 2025 |
| CML Mgmt Trust O-3-27873 | Inland Ocean, Inc. only | Hyatt, South (Wilcox 9,400) | Wharton | 1 | 10.2K | 93.4K | Feb 2020 – Nov 2020 |
| Pryor Trust "B" G-3-182408 | Ascent Operating, LP only | New Taiton (Cook Mtn.) | Wharton | 1 | 8.38K | 1.89M | Mar 2001 – Jan 2004 |
| Pryor Trust G-3-183996 | Faulconer Energy, LLC only | New Taiton (Wilcox) | Wharton | 1 | 8.03K | 1.17M | May 2001 – Aug 2026 |
| Rust Estate G-3-229607 | Cico Oil & Gas Company only | Hungerford, S. (Cook Mountain) | Wharton | 1 | 7.42K | 551K | Mar 2007 – Sep 2012 |
| Armour Trust, et Al G-3-282570 | Hilcorp Energy Company only | Phase Four (9050 Yegua) | Wharton | 1 | 3.92K | 14K | Mar 2017 – Aug 2017 |
| Zeidman Trustee G-3-164161 | Mountain V Texas, LLC only | Peach (Yegua, Lower) | Wharton | 1 | 3.89K | 23.5K | Apr 1997 – Apr 2008 |
| WLM Trust-Wilbeck Unit G-3-188257 | Forest Oil Corporation only | W. D. McMillan (Yegua 9650) | Wharton | 1 | 3.39K | 55K | Mar 2002 – Jun 2008 |
| Kulcak Family Trust Unit O-2-11871 | Kaler Energy Corp. only | Mauritz, East (6970 Sand) | Wharton | 1 | 2.57K | 1.06K | Aug 2019 – Feb 2020 |
| Hutchins-Peareson Trust G-3-137964 | Royal Oil & Gas Corp. only | Avo Grande (Yegua 6800) | Wharton | 1 | 2.34K | 298K | by Jan 1993 – Jan 1994 |
| Stovall, Guy F. Trust O-3-21087 | Hughes, Dan A. Company only | Chitland Creek (7350 Yegua) | Wharton | 1 | 2.3K | 4.68K | by Jan 1993 – Apr 1994 |
| Armour Trust, et Al O-3-27287 | Hilcorp Energy Company only | Phase Four (9050 Yegua) | Wharton | 1 | 2.18K | 8.12K | Sep 2017 – Nov 2017 |
| E.A. Weinheimer-Grady Trust Unit G-3-141517 | Conoco Inc. only | Alwan (Y-650) | Wharton | 1 | 1.89K | 48.9K | by Jan 1993 – Oct 1993 |
| Hutchins-Peareson Trust G-3-140300 | Royal Oil & Gas Corp. only | Avo Grande (Yegua 6800) | Wharton | 1 | 321 | 23.3K | Mar 1993 – Jan 1994 |
| Rust Estate G-3-239700 | Cico Oil & Gas Company only | Hungerford, S. (Cook Mountain) | Wharton | 1 | 305 | 10K | Apr 2008 – May 2008 |
| Zeidman Trustee GU G-3-164975 | Mountain V Texas, LLC only | Ciervo Grande (Middle Wilcox) | Wharton | 1 | 248 | 3.7M | Oct 1997 – Jul 2026 |
| Kubela Mineral Trust G-3-143122 | Howell Petroleum Corporation only | Hutchins-Kubela (5520) | Wharton | 1 | 197 | 25.2K | by Jan 1993 – Feb 1994 |
| Weinheimer-Grady, E. A. Trust G-3-209585 | Crimson Exploration Oper., Inc. only | Alwan (Frio 4700) | Wharton | 1 | 123 | 157K | Apr 2005 – Jul 2006 |
| CML Trust G-3-295767 | MB Energy, LLC only | Hutchins-Kubela (Frio 4800) | Wharton | 1 | 119 | 15.8K | Aug 2023 – Nov 2024 |
| Mnrustik G-3-185220 | Bay Rock Operating Company only | Jones Creek (3400) | Wharton | 1 | 117 | 57.8K | Sep 2001 – Aug 2005 |
| Raun, L. G. Family Trust G-3-203094 | Amtex Energy, Inc. only | Lowell Raun (Frio) | Wharton | 1 | 110 | 608K | Mar 2004 – Aug 2009 |
| Weinheimer-Grady, E. A. Trust G-3-220023 | Crimson Exploration Oper., Inc. only | Alwan, West (Frio 4630) | Wharton | 1 | 65 | 202K | Aug 2006 – Mar 2010 |
| Pryor, Myra S. Trust G-3-142826 | North Central Oil Corp. only | Stimmel, West (Frio 4640) | Wharton | 1 | 42 | 183K | Jun 1993 – Sep 1994 |
| Peareson Trust et Al G-3-201757 | Amtex Energy, Inc. only | Duc (Frio) | Wharton | 1 | 22 | 580K | Mar 2004 – Feb 2011 |
| Weinheimer,e.a.-Grady Trust Unit G-3-148158 | Conoco Inc. only | El Campo, North (Miocene) | Wharton | 1 | 20 | 122K | Jan 1994 – Sep 1994 |
| Stovall, Guy F. Trust G-3-149218 | Hughes, Dan A. Company only | Chitland Creek (Frio 4550) | Wharton | 1 | 6 | 2.68K | Apr 1994 – May 1994 |
| Rust Estate G-3-184616 | Mountain V Texas, LLC only | Ciervo Grande (Middle Wilcox) | Wharton | 1 | 3 | 557K | Jul 2001 – Jun 2026 |
| Halamicek, J. A. Trust G-3-146101 | Conoco Inc. only | Alwan (Frio 4360) | Wharton | 1 | 3 | 143K | Jun 1993 – Dec 1993 |
| Armour Trust et Al G-3-283169 | Hilcorp Energy Company only | Phase Four (8900 Yegua) | Wharton | 1 | 0 | 0 | — |
| Wilson Family Trust G-3-281605 | Amrwr, LLC only | Hillje, South (Marg. 4) | Wharton | 1 | 0 | 4.74K | Nov 2016 – Dec 2016 |
| Smidt Trust G-3-202874 | Samson Lone Star LP only | Wharco Shilling (Miocene 2800) | Wharton | 1 | 0 | 0 | — |
| Security Bank & Trust Company G-3-6821 | McGowan Working Partners, Inc. only | Lane City (Miocene 4100) | Wharton | 1 | 0 | 0 | — |
| Halamicek, J. A.,trust "C" G-3-53758 | LTX Productions, Inc. only | Magnet Withers | Wharton | 1 | 0 | 0 | — |
| Halamicek, J. A. Trust -C- G-3-55687 | U.K. Oil Co. only | Magnet Withers (Miocene 4200) | Wharton | 1 | 0 | 0 | — |
| Radley Children Trust G-3-64137 | BCR Operating Co., LLC only | Blue Basin (Miocene Shallow) | Wharton | 1 | 0 | 48.1K | Apr 1993 – May 2007 |
| Radley Children Trust G-3-75876 | BCR Operating Co., LLC only | Blue Basin (Miocene Shallow) | Wharton | 1 | 0 | 48K | Apr 1993 – May 2007 |
| Radley Children Trust G-3-81684 | BCR Operating Co., LLC only | Blue Basin (1200) | Wharton | 1 | 0 | 48.1K | Apr 1993 – May 2007 |
| Radley Children Trust G-3-115644 | BCR Operating Co., LLC only | Blue Basin (Miocene Shallow) | Wharton | 1 | 0 | 48.1K | Apr 1993 – May 2007 |
| Radley Children Trust G-3-116719 | Radley Children Trust only | Blue Basin (Miocene Shallow) | Wharton | 1 | 0 | 46.7K | Apr 1993 – Jan 2006 |
| Wilson Trust G-3-117200 | Fredco only | Greathope (7150 Frio) | Wharton | 1 | 0 | 0 | — |
| Kubela Mineral Trust G-3-117518 | Howell Petroleum Corporation only | Hutchins-Kubela (5875) | Wharton | 1 | 0 | 0 | — |