| Read G-14-199730 | Burk Royalty Co., Ltd. only | Panhandle, West (Red Cave) | Hutchinson | 1 | 611 | 247K | Jul 2003 – Apr 2026 |
| Treadway et al Unit O-9-8929 | J.H. Oil, Inc. (A) only | SLB (Morris Sand) | Runnels | 1 | 606 | 40 | Jan 1993 – May 1997 |
| Braman, D. H. Jr., et Al G-2-149057 | Sue-Ann Production Company only | Gingerbread (Frio 6705 Sd.) | Victoria | 1 | 517 | 43.6K | Mar 1994 – Jan 1995 |
| Read G-14-25596 | Pantera Energy Company only | Panhandle, West | Moore | 1 | 472 | 507K | Jan 1993 – Apr 2026 |
| Treadwell Trust -19-B G-9-280140 | R3 Operating Corporation only | Fort McKavitt (Lime 4150) | Schleicher | 1 | 432 | 241K | Aug 2015 – Oct 2024 |
| Treadwell, Eunice G-14-73511 | 4P Energy Texas, LLC only | Buffalo Wallow (a Chert Zone) | Wheeler | 1 | 340 | 13.3M | Jan 1993 – Sep 2017 |
| Read G-14-23613 | Burk Royalty Co., Ltd. only | Panhandle, West | Moore | 1 | 282 | 2.22M | Jan 1993 – Apr 2026 |
| Treadwell G-8-62612 | Borderline Operating Corp. only | Harken (Conglomerate) | Palo Pinto | 1 | 275 | 31.7K | Jan 1993 – Dec 1999 |
| Read 1 G-9-157003 | Primal Energy Corporation only | Read Ranch (Strawn) | Crockett | 1 | 266 | 1.15M | Dec 1995 – Mar 2026 |
| Treadgill-Ross G-8-155446 | Westridge Oil & Gas Properties only | Riebe (Atoka Congl) | Palo Pinto | 1 | 248 | 133K | Jul 1995 – Feb 2006 |
| Treadwell G-9-18881 | Boaz Energy II Operating, LLC only | Fort McKavitt (Canyon) | Schleicher | 1 | 237 | 501K | Jan 1993 – Jul 2020 |
| Treadaway G-6-184827 | Quantum Resources Management,llc only | Willow Springs (Cotton Valley,w) | Gregg | 1 | 233 | 649K | Jun 2001 – Sep 2013 |
| Read 4 G-9-180103 | Primal Energy Corporation only | Read Ranch (Strawn) | Crockett | 1 | 191 | 395K | Dec 2000 – Mar 2026 |
| Read Heirs Unit G-13-29188 | BKV Barnett, LLC only | Boonsville (Bend Congl., Gas) | Wise | 1 | 188 | 363K | Jan 1993 – Apr 2026 |
| Treadwell Trust -19-B G-9-287404 | R3 Operating Corporation only | Fort McKavitt, N. (Canyon) | Schleicher | 1 | 187 | 3.12K | Jul 2018 – Oct 2024 |
| Read, W. R. O-10-10010 | Tomahawk Petroleum only | Iatan, East Howard | Howard | 3 | 184 | 20 | Jan 1993 – May 1995 |
| Forrest O-3-25857 | Treadstone Energy Partners, LLC only | FT Trinidad, E. (Edwards -A-) | Madison | 1 | 173 | 0 | Jun 2011 – Jan 2012 |
| Read 21 O-10-36610 | Primal Energy Corporation only | Signal Peak (Wolfcamp) | Howard | 1 | 153 | 0 | Mar 2001 – Apr 2001 |
| Treadwell, Velma "A" O-13-22206 | Yarberry, E. E. only | Dillard, S. (Marble Falls) | Clay | 1 | 152 | 22.6K | Jan 1993 – Feb 1998 |
| Charlene 427 O-11-69377 | Read & Stevens, Inc. only | Bittner (San Andres) | Gaines | 1 | 138 | 5 | Dec 2008 – Feb 2009 |
| Treadwell, Velma "A" O-13-32209 | Yarberry Operating, LLC only | Dillard, W. (Caddo) | Clay | 1 | 116 | 0 | Jan 2012 – Oct 2012 |
| Read 1 G-9-174961 | Primal Energy Corporation only | Read Ranch (Strawn) | Crockett | 1 | 98 | 545K | Oct 1999 – Mar 2026 |
| Read 6 G-9-158256 | Primal Energy Corporation only | Read Ranch (Strawn) | Crockett | 1 | 70 | 595K | Mar 1996 – Mar 2026 |
| Read 1 G-9-173591 | Primal Energy Corporation only | Read Ranch (Strawn) | Crockett | 1 | 68 | 391K | Jul 1999 – Mar 2026 |
| Fraser O-11-68480 | Burk Royalty Co., Ltd. only | Read (Wolfcamp) | Yoakum | 1 | 57 | 0 | Aug 2002 – Sep 2002 |
| T-Bar-X/Read G-5-211859 | Diversified Production LLC only | Savell (Bossier Sand) | Robertson | 1 | 51 | 15.4M | Jun 2005 – Jul 2024 |
| Read "E" 141 G-14-25597 | Pantera Energy Company only | Panhandle, West | Moore | 1 | 49 | 306K | Jan 1993 – Apr 2026 |
| Read G-10-274341 | Campana Petroleum Company only | Coahoma (Miss) | Howard | 1 | 46 | 65.2K | Nov 2012 – Jan 2017 |
| Read "28" G-9-219783 | Extex Operating Company only | Hunt-Baggett, W. (Strawn) | Crockett | 1 | 46 | 900K | Apr 2006 – Mar 2026 |
| Read "28" G-9-218638 | Extex Operating Company only | Hunt-Baggett, W. (Strawn) | Crockett | 1 | 44 | 1.56M | Apr 2006 – Mar 2026 |
| Treadaway G-6-183812 | Quantum Resources Management,llc only | Willow Springs (Cotton Valley,w) | Gregg | 1 | 42 | 316K | Jun 2001 – Sep 2013 |
| Read, Ruth G-13-28889 | Scout Energy Management LLC only | Boonsville (Bend Congl., Gas) | Wise | 1 | 32 | 134K | Aug 1994 – Apr 2026 |
| Ft.trinidad Upper Glen Rose Unit G-3-32368 | Treadstone Energy Partners, LLC only | Fort Trinidad (Glen Rose, Upper) | Madison | 1 | 29 | 787 | Aug 2001 – Jul 2004 |
| Read 3 G-9-184165 | Primal Energy Corporation only | Read Ranch (Strawn) | Crockett | 1 | 29 | 252K | Jun 2001 – Mar 2026 |
| Threadgill L O-1-13544 | Trinidad Petroleum, Inc. only | Bateman (Austin Chalk) | Bastrop | 1 | 20 | 1 | Jan 1993 – Jan 1993 |
| Read "2" G-9-208189 | Extex Operating Company only | Read Ranch (Strawn) | Crockett | 1 | 19 | 230K | Dec 2004 – Mar 2026 |
| T-Bar-X/Read G-5-229870 | Diversified Production LLC only | Savell (Bossier Sand) | Robertson | 1 | 12 | 4M | May 2007 – Apr 2026 |
| Read "E" 141 G-14-227376 | Pantera Energy Company only | Panhandle, West | Moore | 1 | 8 | 286K | Mar 2007 – Apr 2026 |
| Read -C- G-14-123073 | Pantera Energy Company only | Panhandle, West | Moore | 1 | 8 | 1.21M | Jan 1993 – Apr 2026 |
| Read "D" G-14-179279 | Pantera Energy Company only | Panhandle, West | Moore | 1 | 8 | 577K | Jul 2000 – Apr 2026 |
| Read -C- G-14-195557 | Pantera Energy Company only | Panhandle, West | Moore | 1 | 8 | 738K | May 2003 – Apr 2026 |
| Treadwell G-14-79395 | Cambridge Production, Inc. only | Gageby Creek (Hunton) | Wheeler | 1 | 7 | 432K | Jan 1993 – Mar 2003 |
| Ft.trinidad Upper Glen Rose Unit G-3-32372 | Treadstone Energy Partners, LLC only | Fort Trinidad (Glen Rose, Upper) | Houston | 1 | 7 | 207 | Oct 2001 – Dec 2002 |
| Ft.trinidad Upper Glen Rose Unit G-3-32385 | Treadstone Energy Partners, LLC only | Fort Trinidad (Glen Rose, Upper) | Houston | 1 | 6 | 178 | Jan 2003 – Jul 2004 |
| Read G-10-240612 | Campana Petroleum Company only | Coahoma, N. (Fussel) | Howard | 1 | 5 | 4.65K | Aug 2008 – Jan 2009 |
| Treadwell, J. H. "B" G-9-18879 | Taurus Minerals, Inc. only | Fort McKavitt (Canyon) | Schleicher | 1 | 4 | 26.9K | Jan 1993 – May 1997 |
| Read Estate G-14-144742 | Discovery Operating, Inc. only | Hartley Hugoton(krider Dolomite) | Hartley | 1 | 2 | 1.07M | Mar 1993 – Jun 2018 |
| Hoss O-11-67886 | Read & Stevens, Inc. only | RGS (Spraberry) | Dawson | 1 | 1 | 0 | Feb 1998 – Feb 1998 |
| Ready G-4-165100 | Tri-Union Development Corp. only | Los Reyes (Wilcox) | Duval | 1 | 1 | 35.3K | Aug 1997 – Jun 1998 |
| Read G-14-23611 | Burk Royalty Co., Ltd. only | Panhandle, West | Moore | 1 | 0 | 4.15M | Jan 1993 – Apr 2026 |