| Treadwell, J. H. "A" O-9-7055 | Tucker Drilling Company, Inc. only | Fort McKavitt, N. (Canyon Lo.) | Schleicher | 1 | 0 | 0 | — |
| Read G-14-23610 | Burk Royalty Co., Ltd. only | Panhandle, West | Moore | 1 | 0 | 3.53M | Jan 1993 – Apr 2026 |
| Reading-Moss O-10-20053 | Kerr-McGee Corporation only | Cowden, South (13800) | Ector | 1 | 0 | 0 | — |
| Read G-14-23609 | Burk Royalty Co., Ltd. only | Panhandle, West | Moore | 1 | 0 | 321K | Jan 1993 – Nov 1995 |
| Read G-14-23608 | Burk Royalty Co., Ltd. only | Panhandle, West | Moore | 1 | 0 | 4.94M | Jan 1993 – Apr 2026 |
| Read G-14-155645 | Burk Royalty Co., Ltd. only | Panhandle, West | Moore | 1 | 0 | 1.07M | Nov 1995 – Apr 2026 |
| Hand, Mairead G-13-260520 | Formentera Operations LLC only | Newark, East (Barnett Shale) | Johnson | 1 | 0 | 1.37M | Aug 2010 – Apr 2026 |
| Hand, Mairead G-13-258749 | Formentera Operations LLC only | Newark, East (Barnett Shale) | Johnson | 1 | 0 | 799K | Aug 2010 – Apr 2026 |
| Hand, Mairead G-13-258250 | Formentera Operations LLC only | Newark, East (Barnett Shale) | Johnson | 1 | 0 | 473K | Jul 2010 – Feb 2016 |
| Hand, Mairead G-13-258197 | Formentera Operations LLC only | Newark, East (Barnett Shale) | Johnson | 1 | 0 | 2.26M | Aug 2010 – Apr 2026 |
| Hand, Mairead G-13-258186 | Formentera Operations LLC only | Newark, East (Barnett Shale) | Johnson | 1 | 0 | 1.96M | Aug 2010 – Apr 2026 |
| Hand, Mairead G-13-258171 | Formentera Operations LLC only | Newark, East (Barnett Shale) | Johnson | 1 | 0 | 1.79M | Jul 2010 – Apr 2026 |
| Read G-13-247067 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 0 | 2.51M | Jul 2008 – Apr 2026 |
| Read G-13-241110 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 0 | 1.38M | Sep 2008 – Apr 2026 |
| Read L G-14-160483 | Burk Royalty Co., Ltd. only | Panhandle, West | Hutchinson | 1 | 0 | 244K | Jun 1996 – Mar 2007 |
| Read G-13-241109 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 0 | 3.67M | Jul 2008 – Apr 2026 |
| Read G-14-167913 | Burk Royalty Co., Ltd. only | Panhandle, West (Red Cave) | Moore | 1 | 0 | 20.7K | Jul 1998 – Nov 2023 |
| Read Sub -A- O-10-37941 | Texas Reexploration Operating LC only | Coahoma (Miss) | Howard | 3 | 0 | 0 | — |
| Read Sub "B" O-10-37942 | Texas Reexploration Operating LC only | Coahoma, N. (Fussel) | Howard | 1 | 0 | 0 | — |
| Read G-13-240991 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 0 | 1.93M | Aug 2008 – Apr 2026 |
| Treadaway Unit O-10-44367 | Laredo Petroleum, Inc. only | Wildcat | Mitchell | 1 | 0 | 0 | — |
| Hand, Mairead G-13-233051 | Formentera Operations LLC only | Newark, East (Barnett Shale) | Johnson | 1 | 0 | 2.69M | Aug 2007 – Apr 2026 |
| Read "E" 141 G-14-179278 | Pantera Energy Company only | Panhandle, West | Moore | 1 | 0 | 94.2K | Jul 2000 – Mar 2007 |
| Read G-13-212542 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 0 | 1.87M | Jul 2005 – Apr 2026 |
| Treadwell, Velma "A" G-13-169868 | Yarberry Operating, LLC only | Dillard, S. (Marble Falls) | Clay | 1 | 0 | 38.1K | Jun 1995 – Apr 2015 |
| Treadwell, Velma "A" G-13-141940 | Yarberry, E. E. only | Dillard, W. (Caddo) | Clay | 1 | 0 | 45K | Jan 1993 – Jul 2001 |
| Read 33 SWD O-10-50643 | Paladin Petroleum III, L.L.C. only | Coahoma, N. (Clear Fork) | Howard | 1 | 0 | 0 | — |
| Treadwell G-13-113398 | Husfeld, Rose Marie only | Dillard, S. (Marble Falls) | Clay | 1 | 0 | 162K | Jan 1993 – Oct 2009 |
| Read, H. D. et Al G-13-94430 | Upham Oil & Gas Company only | Boonsville (Bend Congl., Gas) | Wise | 1 | 0 | 500K | Jan 1993 – Apr 2015 |
| Smith, C. M. G-13-93433 | Texas Independent Threading Serv only | Alvord, South (Atoka) | Wise | 1 | 0 | 0 | — |
| Read, H. D. et Al G-13-29279 | Upham Oil & Gas Company only | Boonsville (Bend Congl., Gas) | Wise | 1 | 0 | 684K | Jan 1993 – Apr 2026 |
| Read G-10-282163 | Campana Petroleum Company only | Coahoma, N. (Fussel) | Howard | 1 | 0 | 3K | May 2015 – Aug 2016 |
| Read G-10-281987 | Campana Petroleum Company only | Coahoma, N. (Fussel) | Howard | 1 | 0 | 0 | — |
| Read G-10-281986 | Campana Petroleum Company only | Coahoma, N. (Fussel) | Howard | 1 | 0 | 0 | — |
| Treadwell Trust -19- G-9-293803 | R3 Operating Corporation only | Fort McKavitt, N. (Canyon) | Schleicher | 1 | 0 | 207 | Sep 2022 – Oct 2024 |
| Treadwell Trust -19- G-9-293801 | R3 Operating Corporation only | Fort McKavitt, N. (Canyon) | Schleicher | 1 | 0 | 207 | Sep 2022 – Oct 2024 |
| Read G-14-256736 | Pantera Energy Company only | Panhandle, West | Moore | 1 | 0 | 151K | Mar 2010 – Apr 2026 |
| Treadwell 35 SL G-14-272265 | Unbridled Resources, LLC only | Buffalo Wallow (Granite Wash) | Wheeler | 1 | 0 | 0 | — |
| Treadwell 35 SL G-14-272266 | Unbridled Resources, LLC only | Buffalo Wallow (Granite Wash) | Wheeler | 1 | 0 | 0 | — |
| Treadwell 35 SL G-14-275416 | Unbridled Resources, LLC only | Buffalo Wallow (Granite Wash) | Wheeler | 1 | 0 | 0 | — |
| Read "6" G-9-218404 | Pioneer Natural Res. USA, Inc. only | Davidson Ranch (Penn. 7890) | Crockett | 1 | 0 | 0 | — |
| Read "2" G-9-210119 | Extex Operating Company only | Hunt-Baggett, W. (Strawn) | Crockett | 1 | 0 | 325K | Apr 2005 – Mar 2026 |
| Read "1A" G-9-209268 | Pioneer Natural Res. USA, Inc. only | Read Ranch (Strawn) | Crockett | 1 | 0 | 0 | — |
| Treadstone Energy SWD O-3-26538 | Empire Texas Operating LLC only | Ft. Trinidad (Lewisville "A") | Madison | 1 | 0 | 0 | — |
| Read "B" O-11-60399 | Finley Resources, Inc. only | Brahaney (Miss.) | Yoakum | 2 | 0 | 0 | — |
| Treadwell 35 SL G-14-275500 | Unbridled Resources, LLC only | Buffalo Wallow (Granite Wash) | Wheeler | 1 | 0 | 0 | — |
| Read G-14-289182 | Burk Royalty Co., Ltd. only | Panhandle, West | Moore | 1 | 0 | 179K | Jun 2019 – Apr 2026 |
| Read G-14-291810 | Burk Royalty Co., Ltd. only | Panhandle, West | Moore | 1 | 0 | 180K | Aug 2021 – Apr 2026 |
| Read G-14-291815 | Burk Royalty Co., Ltd. only | Panhandle, West | Moore | 1 | 0 | 187K | Sep 2021 – Apr 2026 |
| Treadaway Unit #2 O-11-63974 | Wilson Systems, Inc. only | Brownfield, S. (Fusselman) | Terry | 1 | 0 | 0 | — |