| Land Trust O-10-17100 | Killer Rabbit Fields LLC only | Ken Regan (Delaware) | Reeves | 1 | 15.2K | 226 | by Jan 1993 – Nov 2017 |
| Wilson, John H. Trustee "B" O-10-25128 | Noble Energy Inc only | Rhoda Walker (Canyon 5900) | Ward | 9 | 15.2K | 64.8K | by Jan 1993 – Mar 2016 |
| Sterling Family Trust-A- O-10-33738 | MDC Operating, Inc. only | Vincent, SE. (Strawn) | Mitchell | 1 | 15K | 84.1K | Feb 1993 – Nov 1998 |
| Carter, M.K. Trust NCT-1 O-10-20250 | Olsen Energy Inc. only | Edwards -04- (Ellenburger S.) | Crane | 1 | 14.5K | 757 | Jan 2009 – Aug 2026 |
| Jackson Trust O-13-22851 | Bettis, Boyle & Stovall only | Jerrye-Jan (Congl.) | Jack | 1 | 14.5K | 113K | by Jan 1993 – Mar 2013 |
| TP Land Trust "25" O-10-49459 | Diamondback E&P LLC only | Spraberry (Trend Area) | Midland | 2 | 14.3K | 16K | Jan 2018 – Mar 2025 |
| Iowa Realty Trust "B" O-10-33242 | Incline Energy only | Pecos Valley, S. (Devonian) | Pecos | 1 | 14.3K | 258K | by Jan 1993 – Oct 2016 |
| Cooley Deep O-8-25828 | Trust Oil Co. only | Truby, SW. (Ellenburger) | Jones | 1 | 14.1K | 4.28K | by Jan 1993 – Dec 2000 |
| Stewart Trust O-14-6831 | Burk Royalty Co., Ltd. only | Panhandle Hutchinson County Fld. | Hutchinson | 2 | 14.1K | 344K | by Jan 1993 – Sep 2020 |
| Carruth, E.B. Jr, Trust et Al O-4-13034 | Orphan Wells, LLC only | Boyle, E. (3500) | Starr | 1 | 13.9K | 7.65K | Jun 2001 – Sep 2011 |
| Ellington Trust O-6-12372 | Newton Corp.,the only | Lake Texarkna (Travis Peak) | Cass | 1 | 13.8K | 22 | by Jan 1993 – Jun 1998 |
| Mobil-City of Kilgore O-6-13087 | Long Trusts, The only | R.C.R. (Pettit -A-) | Gregg | 1 | 13.7K | 93 | by Jan 1993 – Jun 2017 |
| CML Trust O-3-28098 | MB Energy, LLC only | Shanghai (5600 Frio) | Wharton | 1 | 13.7K | 10.9K | Jan 2023 – Jan 2025 |
| Johnson Trusts A O-5-4139 | Proven Natural Resources LLC only | Aguila Vado (Eagleford) | Grimes | 1 | 13.5K | 143K | Apr 2013 – Jul 2026 |
| Langtry-Shirley Trust O-2-11427 | Britanco, L.L.C. only | Helm (Pettus) | Bee | 1 | 13.4K | 0 | Feb 2018 – Aug 2026 |
| Treadwell Trust -19-B O-9-17617 | Boaz Energy II Operating, LLC only | Fort McKavitt, N. (Canyon) | Schleicher | 2 | 13.4K | 121K | Oct 2011 – Jun 2018 |
| Iowa Realty Trust O-10-36570 | Moonlite Oil & Gas Company only | Pecos Valley (Wichita-Albany) | Pecos | 1 | 13.4K | 148K | Jan 2001 – Aug 2026 |
| Guitar Trust Estate O-10-38418 | Free Rein Operating LLC only | Moore | Howard | 2 | 13.4K | 0 | Sep 2007 – Aug 2026 |
| McFaddin Trust O-3-27426 | Vestige Energy, LLC only | French Island (Marg 1) | Jefferson | 1 | 13.3K | 0 | Oct 2018 – Jun 2026 |
| Dyer, A. E. Trust O-8-6644 | Tracker Mineral only | Colonel (Fry Sand) | Callahan | 2 | 13.3K | 70 | by Jan 1993 – May 2016 |
| Buckler, Walker Trust O-8-6659 | Sojourner Drilling Corporation only | V. G. (Gardner) | Shackelford | 1 | 13.3K | 68.3K | by Jan 1993 – Jun 2018 |
| Letha Jacoby Trust O-9-15321 | Otex LLC only | Wilhelm Lane (Hope Lime) | Menard | 1 | 13.3K | 0 | Dec 2002 – Aug 2026 |
| Fossil Wildman Trust Unit No. 2 O-5-3942 | Contrast Energy, LLC only | Hilltop Resort (Woodbine) | Leon | 1 | 13.3K | 909 | Jan 2011 – Jan 2013 |
| Campbell Ranch -26- O-10-31966 | Rust Oil Corp. only | Elwanda (Yates) | Winkler | 2 | 13.3K | 1.38K | by Jan 1993 – Aug 2026 |
| Hays Trust O-14-4938 | Sandridge Expl. and Prod., LLC only | Panhandle Carson County Field | Carson | 8 | 13.2K | 171K | by Jan 1993 – Sep 2011 |
| Cowden RANCH"6 HG" O-10-37002 | Rust Oil Corp. only | Harper (Glorieta) | Ector | 1 | 13.1K | 1.38K | Dec 2002 – Nov 2021 |
| Edith Brown Trust O-8-28922 | IS Energy, LLC only | Bissett, E. (Strawn Sand) | Stonewall | 1 | 13K | 0 | Feb 2001 – Oct 2014 |
| Walker-Buckler Trust 380-381 O-8-25748 | Hilltex Operating Company, LLC only | Shackelford County Regular | Shackelford | 17 | 12.9K | 63 | by Jan 1993 – Dec 2012 |
| McFarland Trust O-6-13884 | Jla Resources Company only | Anwac (900 Wilcox) | Anderson | 1 | 12.9K | 1.52K | Jan 1999 – Jun 2026 |
| Denton Trust O-6-12925 | Brazos Petroleum, Inc. only | Itty Bitty (Paluxy) | Wood | 2 | 12.9K | 12 | May 1993 – Apr 1994 |
| Fossil Wildman Trust Unit No. 1 O-5-3928 | Contrast Energy, LLC only | Hilltop Resort (Glen Rose 8498) | Leon | 1 | 12.6K | 0 | Jul 2010 – Aug 2026 |
| Walker-Buckler Trust (TR.15) O-8-11934 | Keating Energy, Inc. only | Shackelford Ne(miss) | Shackelford | 6 | 12.5K | 383K | by Jan 1993 – Aug 2026 |
| Cook, Vannie, Trusts O-4-6247 | RNS Oil Co. only | Los Olmos | Starr | 59 | 12.3K | 18 | by Jan 1993 – Dec 2004 |
| Dinn Mineral Trusts, The O-4-12055 | Hilcorp Energy Company only | Guerra (3800) | Webb | 1 | 12.3K | 17 | by Jan 1993 – Oct 1996 |
| Sievers, Edwald et Al O-2-5133 | Long Trusts, The only | Holly (Yegua 4600 Up.) | De Witt | 1 | 12.3K | 68 | by Jan 1993 – Sep 2005 |
| Moss, Paul Estate O-10-29502 | Rust Oil Corp. only | Mosswell (Strawn 8720) | Ector | 2 | 12.2K | 10K | by Jan 1993 – Nov 1996 |
| Brittingham Trust "C" O-8-14444 | Spring Tree Management LC only | Shackelford County Regular | Shackelford | 5 | 11.9K | 20 | by Jan 1993 – May 2009 |
| Wood Family Memorial Trust O-2-9025 | New Source Oil & Gas, LLC only | Wood High (Elsie) | Victoria | 1 | 11.9K | 0 | Mar 2006 – Aug 2010 |
| Winterbotham, J.M. Trust "B" O-9-11966 | OXY USA Inc. only | Dove Creek (Cisco) | Irion | 1 | 11.9K | 73.8K | by Jan 1993 – Sep 2012 |
| Davis-Trustee O-14-8242 | Opal Operating Company LLC only | Pan Petro (Cleveland) | Ochiltree | 1 | 11.8K | 999 | May 2011 – Aug 2026 |
| Garcia-Ncnb-Paschall Trust O-1-13279 | Blackbrush O & G, Inc. only | Pearsall (Austin Chalk) | Frio | 1 | 11.8K | 9.45K | by Jan 1993 – May 1995 |
| Flowers Trust "A" O-14-6875 | Blackbeard Operating, LLC only | Mendota, NW. (Douglas, Lo.) | Roberts | 3 | 11.6K | 326K | Aug 1993 – Jul 2020 |
| Standard Trust Company O-3-14358 | Arrowhead Operating Inc. only | Giddings (Austin Chalk-3) | Fayette | 1 | 11.4K | 5.22K | by Jan 1993 – Aug 2013 |
| Jackson Trust O-13-31469 | Rhodes Disposal, Inc. only | Bryson, East | Jack | 1 | 11.4K | 0 | Oct 2008 – May 2026 |
| Prideaux, R. O. "B" O-13-18847 | Beisch, Rusty only | Jack County Regular | Jack | 1 | 11.3K | 191 | by Jan 1993 – Feb 2012 |
| Rogers #4 O-6-12844 | Roach, R. Byron Trustee only | Rogers Lake (Glen Rose) | Harrison | 1 | 11.2K | 80 | by Jan 1993 – May 1998 |
| Judkins Trust O-9-14630 | Anderson, James K. Inc. only | Jerrybo (Tannehill) | Schleicher | 2 | 11.2K | 1.92K | Aug 1997 – Feb 2003 |
| Hanna Trust O-13-33879 | Burk Royalty Co., Ltd. only | Odell (Canyon Sd. 4300) | Wilbarger | 1 | 11.1K | 0 | Apr 2019 – Jul 2026 |
| Rio Grande Land Trust G.U. #1 O-4-12903 | Texas Independent Explor Ltd. only | Mercedes ( 3-M) | Hidalgo | 1 | 10.9K | 49K | Aug 1999 – Mar 2005 |
| Bailey, James Trustee O-3-23489 | Neg Operating LLC only | Paul (LW-15) | Colorado | 1 | 10.8K | 92.8K | May 1998 – Feb 2002 |