| Shannon Estate -B- O-9-1277 | Clark Oil Co. only | Shannon (San Andres) | Crockett | 57 | 945K | 22 | Jan 1993 – Jul 2026 |
| Guitar Estate -B- O-10-31757 | Americo Energy Resources, LLC only | Zebulon | Howard | 4 | 944K | 60.9K | Jan 1993 – Jul 2026 |
| Todd Estate -B- O-9-2016 | O'Ryan Oil and Gas only | Todd, Deep (Ellenburger) | — | 3 | 370K | 252K | Jan 1993 – Jul 2026 |
| Slick, T. B. Estate -B- O-4-2377 | Hilcorp Energy Company only | Rincon (Vicksburg Sand) | Starr | 7 | 274K | 668K | Jan 1993 – Jul 2026 |
| Schlosser, Fred Estate -B- O-10-26096 | XTO Energy Inc. only | Rojo Caballos (Delaware) | Pecos | 8 | 265K | 226K | Jan 1993 – Apr 2024 |
| Vanderbilt State -B- O-2-7087 | Hilcorp Energy Company only | West Ranch (Mitchell) | Jackson | 1 | 143K | 90.6K | Jan 1993 – Jul 2026 |
| Connell, W. E., Estate -B- O-10-9044 | Winfield Operating Company only | C-Bar (San Andres) | — | 7 | 141K | 1.47K | Jan 1993 – Jul 2026 |
| Carter-State -B- O-6-1071 | Peles, LLC only | Neches (Woodbine) | Cherokee | 3 | 132K | 158K | Jan 1993 – Jul 2026 |
| Waggoner, W. T. Estate -B- O-13-18530 | Waggoner Operating, L.L.C. only | Dan (Strawn) | Wilbarger | 3 | 75.2K | 40 | Jan 1993 – Jul 2026 |
| Tubb Estate -B- O-10-35626 | Ameredev Operating, LLC only | Crittendon (Brushy Canyon) | Winkler | 2 | 73K | 147K | Dec 1997 – Jul 2026 |
| Hilburn, S., Estate -B- O-7-6824 | Chevron U. S. A. Inc. only | East Texas | — | 22 | 67.8K | 14.3K | Jan 1993 – Feb 2008 |
| Guerra, F.B. Estate -B- O-4-11420 | Milagro Exploration, LLC only | La Reforma (H-1) | Starr | 1 | 57.5K | 148K | Jan 1993 – Feb 2014 |
| Parker, J. E. Estate -B- O-10-32578 | Huntington Energy, L.L.C. only | Martin (Clear Fork) | Andrews | 2 | 52K | 367K | Jan 1993 – Feb 2011 |
| State -B- O-14-804 | Large Operating LLC only | Panhandle Hutchinson County Fld. | — | 8 | 51.7K | 44.5K | Jan 1993 – Jul 2026 |
| Parker, J. E. Estate -B- O-10-37246 | Winn Operating, LLC only | Martin (Consolidated) | Andrews | 4 | 45.9K | 391K | Dec 2002 – Jul 2026 |
| Johnson, Lou E. Estate -B- O-9-664 | Quail Ridge Petroleum LLC only | Jameson (Strawn) | Coke | 4 | 44.2K | 532K | Jan 1993 – Jul 2026 |
| Tubb, J.B. Estate -B- O-10-25460 | Williams Oil Company only | Sand Hills, West (Devonian) | — | 1 | 44.2K | 559K | Jan 1993 – May 2014 |
| Hedberg Estate -B- O-10-31770 | Texland Petroleum, L.P. only | Boydell, S. (Clear Fork, Lo.) | Andrews | 1 | 39.8K | 143K | Jan 1993 – Dec 2011 |
| York Estate -B- O-13-12756 | Willowbend Investments, Inc. only | Burns-Jones | Archer | 3 | 36.2K | 21 | Jan 1993 – Jul 2026 |
| Fisher, M. M., Estate -B- O-10-12542 | Capstone Natural Resources, LLC only | Shafter Lake (San Andres) | Andrews | 2 | 30.8K | 20 | Jan 1993 – Oct 2013 |
| Wines, Fred Estate -B- O-13-18529 | Double Barrel Operating LLC only | Wines (Caddo) | Clay | 4 | 29.7K | 19 | Jan 1993 – Jul 2026 |
| Talco State -B- O-6-1624 | Exxon Mobil Corporation only | Talco | — | 1 | 25.9K | 23 | Jan 1993 – Oct 2011 |
| Bird, F. A. Estate -B- O-9-3526 | Bird E&P LLC only | Spraberry (Trend Area) | — | 2 | 25.4K | 98.1K | Jan 1993 – Jul 2026 |
| Flint Estate -B- O-10-35209 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 10 | 22.3K | 2.06M | Feb 1997 – Apr 2016 |
| Parker, J.E. Estate -B- O-10-32414 | Huntington Energy, L.L.C. only | Martin (Clear Fork, LO) | Andrews | 2 | 19.5K | 277K | Jan 1993 – Mar 2008 |
| Frazier, Nell Estate -B- O-10-27616 | Johnson Operating Company, LLC. only | Moore | Howard | 4 | 17.1K | 23 | Jan 1993 – Jul 2026 |
| Parker, J. E. Estate -B- O-10-18572 | Huntington Energy, L.L.C. only | Goldsmith, N. (San Andres, Con.) | Andrews | 2 | 16K | 24.9K | Jan 1993 – Sep 2010 |
| Kennedy, M.O. Estate -B- O-8-22677 | Sky Resources, Inc. only | Ivan (Marble Falls) | Stephens | 1 | 12.9K | 149K | Jan 1993 – Jul 2026 |
| Abercrombie, C. L., Estate -B- O-13-8404 | Carloran Production Corp only | Archer County Regular | — | 39 | 11.9K | 21 | Jan 1993 – Jul 2026 |
| Shannon, J. M. Estate -B- O-9-2808 | Sundown Energy LP only | Shannon (San Andres) | Crockett | 8 | 11.7K | 15 | Jan 1993 – Jun 2012 |
| Waggoner, W. T. Estate -B- O-13-18815 | Waggoner Operating, L.L.C. only | Wilbarger County Regular | Wilbarger | 1 | 9.52K | 39 | Jan 1993 – Nov 2025 |
| Burr, J.K. Estate -B- O-1-10375 | Robin, Jack, Co. only | Wipff (Georgetown 2300) | Maverick | 1 | 9.23K | 21 | Jan 1993 – Mar 2008 |
| Slick, T. B. Estate -B- 266 O-4-13192 | Hilcorp Energy Company only | Rincon (Vicksburg I-D) | Starr | 1 | 8.57K | 3.9K | Dec 2003 – Jul 2026 |
| Speer, Geo. H.-State -B- O-4-3084 | Kerr-McGee Oil & Gas Onshore LLC only | Sun | — | 1 | 7.3K | 92.3K | Jan 1993 – Sep 2003 |
| Waggoner, W. T., Estate -B- O-13-18445 | Fin Energy, LLC only | Wichita County Regular | — | 10 | 6.88K | 22 | Jan 1993 – Jul 2026 |
| Graham Estate -B- O-13-13136 | Five K Partnership only | Young County Regular | — | 1 | 4.88K | 21 | Jan 1993 – Sep 2020 |
| Collins, Claude Jr. Estate -B- O-10-32214 | Ladd Oil & Gas Corporation only | China Draw (Canyon) | Sterling | 1 | 4.63K | 40 | Jan 1993 – Mar 2007 |
| Hancock Estate -B- O-10-29108 | Maralo, Inc. only | Deep Rock (Penn.) | Andrews | 1 | 3.18K | 906 | Jan 1993 – Jul 1995 |
| Walker, J.E. Estate -B- O-10-26771 | High Desert Resources, L.L.C. only | Moore | Howard | 2 | 2.3K | 20 | Jan 1993 – Jul 2026 |
| Sallie Clark Estate -B- O-1-4133 | Austin Operating, LLC. only | Luling-Branyon | — | 5 | 2.2K | 20 | Jan 1993 – Jul 2026 |
| Floyd Estate -B- O-3-5850 | Davis, Larry D. only | Boling | — | 5 | 1.72K | 24 | Jan 1993 – Jul 2026 |
| Nutt, J. L. Estate -B- O-10-34477 | Diamond G Production only | Barbasal (Queen) | — | 4 | 1.08K | 2.66K | Mar 1995 – Mar 2008 |
| Vanderbilt State -B- O-2-1672 | Vintage Petroleum, Inc. only | West Ranch (Ward) | Jackson | 2 | 622 | 12.8K | Jan 1993 – Apr 2005 |
| Blakely Estate -B- O-3-4786 | American Energy Op. Corp.,the only | Blue Ridge | — | 1 | 190 | 14 | Jan 1993 – Apr 2000 |
| Waggoner, W. T. Estate -B- O-13-10397 | Bastrop Oil & Gas, Inc. only | Electra, SW. (2100 Res.) | — | 2 | 167 | 27 | Jan 1993 – Jul 2026 |
| Lindsay State -B- O-10-25473 | Tumbleweed Energy Limited only | Abell | Pecos | 1 | 15 | 16 | Jan 1993 – Sep 2004 |
| Amoco-Sealy Estate -B- O-10-32328 | Permian Resources, Inc. only | Magnolia Sealy | Winkler | 1 | 9 | 1 | Jan 1993 – Mar 1998 |
| East, Mrs. S. K. Estate -B- O-4-9445 | Sarita Energy Resources, Ltd. only | Wildcat | Kenedy | 2 | 0 | 0 | Jan 1993 – Jul 2009 |
| Flint Estate -B- G-10-279634 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 1 | 0 | 8.87K | Jan 2015 – Jul 2026 |
| Flint Estate -B- G-10-276509 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 1 | 0 | 40.9K | Jun 2013 – Jul 2026 |