| Hill, P. C.-State -A- O-10-20005 | Seaboard Operating Co. only | Quito, West (Delaware) | Ward | 7 | 474K | 775K | Jan 1993 – Apr 2026 |
| Todd Estate -A- O-9-2015 | O'Ryan Oil and Gas only | Todd, Deep (Ellenburger) | Crockett | 3 | 341K | 282K | Jan 1993 – Apr 2026 |
| McLean Estate -A- O-4-3638 | Three C Exploration, LLC only | Las Animas-Lefevre | Jim Hogg | 10 | 123K | 189 | Jan 1993 – Dec 2023 |
| Tubb Estate -A- O-10-35889 | Impetro Operating LLC only | Crittendon (Brushy Canyon) | Winkler | 1 | 118K | 170K | Jun 1998 – Feb 2017 |
| Shannon, J. M. Estate -A- O-9-2051 | Saga Petroleum LLC of Colorado only | Vaughn | Crockett | 12 | 113K | 21 | Jan 1993 – Mar 2015 |
| Hilburn, S., Estate -A- O-7-6823 | Basa Resources, Inc. only | East Texas | Gregg | 4 | 102K | 48.1K | Jan 1993 – Apr 2026 |
| Cow Bayou State -A- O-3-3277 | Kilmarnock Oil Company, Inc. only | Orange | Orange | 6 | 99.9K | 21 | Jan 1993 – Apr 2026 |
| Wardlaw, L. J. Estate -A- O-1-8108 | Uhc Petroleum Corporation only | Wardlaw | Edwards | 104 | 78.9K | 210 | Jan 1993 – Jul 2012 |
| Hedberg Estate -A- O-10-31343 | Texland Petroleum, L.P. only | Boydell, S. (Clear Fork, Lo.) | Andrews | 1 | 76.6K | 210K | Jan 1993 – Jul 2011 |
| Johnston State -A- O-10-33109 | Toc Energy Resources, LLC only | GW (Ellenburger) | Pecos | 1 | 76.5K | 3.76K | Jan 1993 – Apr 2026 |
| Waggoner, W. T., Estate -A- O-13-5012 | Os&s Operating Inc. only | Wichita County Regular | Wichita | 17 | 70.7K | 87 | Jan 1993 – Mar 2026 |
| Grice, W. W., Estate -A- O-6-5282 | Atlantis Oil Company, Inc. only | Quitman (Sub-Clarksville) | Wood | 1 | 70.5K | 0 | Jun 2010 – Apr 2026 |
| Bender Estate -A- O-3-354 | Hilliard-Bender Energy, LLC only | Bender (Yegua y-5 Sand) | Montgomery | 1 | 65.6K | 103K | Jan 1993 – Jun 2018 |
| Guitar Trust Estate -A- O-10-8569 | Americo Energy Resources, LLC only | Varel (San Andres) | Howard | 2 | 59.3K | 37 | Jan 1993 – Sep 2019 |
| Hall, J. F. State -A- G-4-115681 | Killam Oil Co., Ltd. only | Lyda (Vicksburg Lower) | Starr | 1 | 53.4K | 1.19M | Jan 1993 – Jan 2015 |
| Guitar Trust Estate -A- O-10-8765 | P4 Operating, LLC only | Varel (San Andres) | Howard | 1 | 40K | 142 | Jan 1993 – Apr 2026 |
| Waggoner, W. T. Estate -A- O-13-18649 | Burk Royalty Co., Ltd. only | Lee Ann (Ellenburger) | Wilbarger | 1 | 32.4K | 24 | Jan 1993 – Feb 2024 |
| State -A- O-10-16550 | Olsen Energy Inc. only | Dune | Crane | 3 | 29.4K | 45 | Jan 1993 – Aug 1999 |
| Shannon, J. M. Estate -A- O-9-19093 | Vanco Oil & Gas Corp. only | Vaughn Consolidated | Crockett | 11 | 24.6K | 0 | Apr 2015 – Jan 2021 |
| Waggoner, W. T. Estate -A- O-13-18531 | Burk Royalty Co., Ltd. only | Lee Ann (Strawn) | Wilbarger | 1 | 23.1K | 23 | Jan 1993 – Apr 2026 |
| Guitar Trust Estate -A- O-8-2208 | Beasley Well Service Inc. only | Jones County Regular | Jones | 5 | 23K | 68 | Jan 1993 – Mar 2026 |
| Tomlinson, W. R. Estate -A- O-9-6530 | Unit Petroleum Company only | P-C (Strawn) | Menard | 1 | 22.9K | 22 | Jan 1993 – May 2013 |
| Crockett-State -A- O-10-335 | Martin Foree Operating, LLC only | Apco-Warner | Pecos | 1 | 20K | 7.18K | Jan 1993 – Sep 2020 |
| Jeffery Estate -A- O-13-29495 | Four Corners Energy, LLC only | Seacliff (Mississippi) | Young | 1 | 16.9K | 0 | Jun 1998 – Aug 2023 |
| Flint Estate -A- O-10-27017 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 8 | 14.7K | 1.38M | Jan 1993 – Dec 2014 |
| Morris, J. P. Estate -A- O-8-3344 | Rigged UP, LLC only | Shackelford County Regular | Shackelford | 2 | 14.3K | 20 | Jan 1993 – Feb 2021 |
| Parker, J.E. Estate -A- O-10-33629 | Oryx Energy Company only | Martin (Clear Fork) | Andrews | 2 | 14K | 972K | Jan 1993 – Aug 1995 |
| Oconnor, L. W., Estate -A- O-2-3839 | Hilcorp Energy Company only | Live Oak Lake (5000) | Goliad | 28 | 12.2K | 21.5K | Jan 1993 – Feb 1998 |
| Scarborough, W. F. Estate -A- O-10-5368 | Q Natural Resources, LLC only | Scarborough, North | Winkler | 1 | 11.4K | 127 | Jan 1993 – Apr 2026 |
| Noelke, W. M. Estate -A- G-9-39189 | Toc Energy Resources, LLC only | Mertzon (Canyon) | Irion | 1 | 10.4K | 547K | Jan 1993 – Apr 2026 |
| Hall, J. F. State -A- G-4-188045 | Killam Oil Co., Ltd. only | Lyda (Vicksburg Lower) | Starr | 1 | 10.3K | 1.39M | Mar 2002 – Apr 2026 |
| Younger Estate -A- O-13-17730 | Trek Resources, Inc. only | Park Springs (Congl.) | Wise | 1 | 9.99K | 63.1K | Jan 1993 – Apr 2026 |
| Collins Estate -A- O-8-2725 | Breck Operating Corp. only | Pitzer (5100 Sand) | Jones | 1 | 9.6K | 21 | Jan 1993 – Apr 2000 |
| Donnell Estate -A- O-13-20189 | Delta Oil & Gas Ltd. only | Young County Regular | Young | 1 | 8.31K | 27.5K | Jan 1993 – Sep 2003 |
| Parker Estate -A- O-10-30494 | Robertson Resources, Inc. only | Lawson (San Andres) | Ector | 1 | 4.97K | 758 | Jan 1993 – Jul 1998 |
| Allen Estate -A- G-14-51556 | Cobra Oil & Gas Corporation only | Perryton, West (Morrow 8100) | Ochiltree | 1 | 4.95K | 834K | Jan 1993 – Apr 2026 |
| Hall, J. F. -State -A- G-4-141915 | Killam Oil Co., Ltd. only | Lyda (Vicksburg Lower) | Starr | 1 | 4.68K | 932K | Jan 1993 – Jul 2007 |
| Kerr Estate -A- O-9-14171 | Endeavor Energy Resources L.P. only | Spraberry (Trend Area) | Reagan | 1 | 4.54K | 64.2K | Nov 1995 – Dec 2004 |
| Holt, J. W. Estate -a- Gas Unit G-6-111879 | TGNR East Texas LLC only | Oak Hill (Cotton Valley) | Rusk | 1 | 4.53K | 406K | Jan 1993 – Apr 2026 |
| Miller Estate -A- O-3-10148 | Ermis Vacuum Service only | Hutchins-Kubela (Frio 4400) | Wharton | 1 | 4.37K | 32 | Jan 1993 – Jul 1998 |
| Dennis Estate -A- O-13-2039 | Barrett Oil Co. only | Cooke County Regular | Cooke | 4 | 4.35K | 66 | Jan 1993 – Jun 1998 |
| Burr, J.K. Estate -A- O-1-10114 | Robin, Jack, Co. only | Wipff (Georgetown 2300) | Maverick | 1 | 4.25K | 21 | Jan 1993 – Aug 2003 |
| Guitar Trust Estate -A- O-10-30528 | Sola Operating, LLC only | Varel (San Andres) | Howard | 1 | 4.15K | 17 | Jan 1993 – Dec 2019 |
| Mahaffey Estate -A- O-10-25491 | EQT Production Texas, LLC only | Deck (Cisco) | Sterling | 1 | 3.66K | 12.5K | Jan 1993 – Mar 2014 |
| Hall, J. F. State -A- G-4-292122 | Killam Oil Co., Ltd. only | Rincon, N. (Vicksburg Cons.) | Starr | 1 | 2.76K | 401K | Jan 2022 – Apr 2026 |
| Christian, Alice Estate -A- G-6-100151 | TGNR East Texas LLC only | Oak Hill (Cotton Valley) | Rusk | 1 | 2.43K | 1.2M | Jan 1993 – Apr 2026 |
| Christian, Alice Estate -A- G-6-125425 | TGNR East Texas LLC only | Oak Hill (Cotton Valley) | Rusk | 1 | 2.31K | 736K | Jan 1993 – Sep 2015 |
| Cox Estate -A- G-9-18943 | HRB Operating Company, Inc. only | Ingham (Devonian) | Crockett | 1 | 2.11K | 1.14M | Jan 1993 – Oct 2023 |
| Hall, J.F. State -A- G-4-220492 | Killam Oil Co., Ltd. only | Lyda (Vicksburg Lower) | Starr | 1 | 1.99K | 1.07M | May 2006 – Jul 2016 |
| Christian, Alice Estate -A- G-6-124444 | TGNR East Texas LLC only | Oak Hill (Cotton Valley) | Rusk | 1 | 1.98K | 950K | Jan 1993 – Apr 2026 |