| Balerion the Dread 36-24 A O-10-60267 | Birch Operations, Inc. only | Spraberry (Trend Area) | Dawson | 1 | 1.07M | 475K | Aug 2023 – Jul 2026 |
| Balerion the Dread 36-24 C O-10-60268 | Birch Operations, Inc. only | Spraberry (Trend Area) | Dawson | 1 | 992K | 416K | Aug 2023 – Jul 2026 |
| Threadfin 57-1-47-35 B O-10-60419 | Anadarko E&P Onshore LLC only | Phantom (Wolfcamp) | Reeves | 1 | 684K | 3.02M | Aug 2023 – Jul 2026 |
| Pitchfork-Toreador BH O-11-67853 | Canan Mowrey Operating, LLC only | Silverspur (Tannehill) | Dickens | 5 | 629K | 0 | Oct 1997 – Jul 2026 |
| Pitchfork Toreador "22" O-11-68264 | Canan Mowrey Operating, LLC only | Silverspur (Tannehill) | Dickens | 9 | 581K | 16.6K | Aug 2000 – Jul 2026 |
| Threadfin 57-1-47-35 A O-10-60449 | Anadarko E&P Onshore LLC only | Sandbar (Bone Spring) | Reeves | 1 | 558K | 1.5M | Aug 2023 – Jul 2026 |
| Read O-11-65684 | Extex Operating Company only | Brahaney, Northwest (Devonian) | Yoakum | 4 | 553K | 75.2K | Jan 1993 – Jul 2026 |
| Threadfin 57-1-47-35 H O-10-62379 | Anadarko E&P Onshore LLC only | Phantom (Wolfcamp) | Reeves | 1 | 444K | 1.34M | Aug 2024 – Jul 2026 |
| Read et al Unit O-11-64731 | Finley Resources, Inc. only | Brahaney, Northwest (Devonian) | Yoakum | 5 | 435K | 117K | Jan 1993 – Jul 2026 |
| Read "B" O-11-64295 | Finley Resources, Inc. only | Read (Wolfcamp) | Yoakum | 1 | 388K | 212K | Jan 1993 – Jul 2026 |
| Dreadnaught F O-10-59972 | COG Operating LLC only | Sandbar (Bone Spring) | Loving | 1 | 378K | 826K | May 2023 – Jul 2026 |
| Dreadnaught B O-10-57209 | COG Operating LLC only | Phantom (Wolfcamp) | Loving | 1 | 358K | 584K | Feb 2022 – Jul 2026 |
| Dreadnaught C O-10-57167 | COG Operating LLC only | Phantom (Wolfcamp) | Loving | 1 | 346K | 543K | Feb 2022 – Jul 2026 |
| Threadfin 57-1-47-35 E O-10-62378 | Anadarko E&P Onshore LLC only | Phantom (Wolfcamp) | Reeves | 1 | 344K | 1.22M | Aug 2024 – Jul 2026 |
| Harris, T. B. -A- O-7-7759 | Ableready, Inc. only | East Texas | — | 4 | 324K | 101K | Jan 1993 – Jul 2026 |
| Dreadnaught A O-10-57212 | COG Operating LLC only | Phantom (Wolfcamp) | Loving | 1 | 319K | 519K | Feb 2022 – Jul 2026 |
| Dreadnaught E O-10-57168 | COG Operating LLC only | Phantom (Wolfcamp) | Loving | 1 | 277K | 462K | Feb 2022 – Jul 2026 |
| Dreadnaught G O-10-62860 | COG Operating LLC only | Sandbar (Bone Spring) | Loving | 1 | 273K | 778K | May 2024 – Jul 2026 |
| Pitchfork-Toreador "D" O-11-66774 | Canan Mowrey Operating, LLC only | Getaway Canyon (Tannehill) | Dickens | 4 | 243K | 21 | Jan 1993 – Jul 2026 |
| Dreadnaught D O-10-59928 | COG Operating LLC only | Sandbar (Bone Spring) | Loving | 1 | 241K | 556K | May 2023 – Jul 2026 |
| Read, W. R. -B- O-10-2930 | Sweet Crude Operating LLC only | Iatan, North | Howard | 10 | 197K | 144 | Jan 1993 – Jul 2026 |
| Read 34 O-10-54583 | Paladin Petroleum III, L.L.C. only | Spraberry (Trend Area) | Howard | 2 | 177K | 369K | Jun 2020 – Jul 2026 |
| Read et al Unit O-11-70317 | Finley Resources, Inc. only | Brahaney | Yoakum | 4 | 172K | 0 | Nov 2014 – Jul 2026 |
| Pitchfork-Toreador 17-B- O-11-67356 | Sauder Management Company only | Matador-Williams, W. (Tannehill) | Dickens | 1 | 167K | 0 | Feb 1995 – Aug 2020 |
| Read, Verna O-11-64802 | Pbag Operating LLC only | Tex-Hamon, North (Fusselman) | Dawson | 1 | 156K | 23 | Jan 1993 – Jul 2026 |
| BI-County Unit 3 O-3-22826 | Treadstone Energy Prtnr OP, LLC only | Giddings (Austin Chalk-3) | Burleson | 1 | 148K | 77.3K | Jul 1995 – Jul 2026 |
| Treadwell O-6-15652 | Rose City Resources, LLC only | Lake Ferrell (Pettit, Upper) | Marion | 1 | 138K | 4.58K | Sep 2018 – Jul 2026 |
| Pitchfork - Toreador 2 O-11-68574 | Canan Mowrey Operating, LLC only | Grantham (Tannehill) | Dickens | 2 | 134K | 14 | Apr 2003 – Jul 2026 |
| Ely Unit No. 2 O-3-25741 | Treadstone Energy Prtnr OP, LLC only | Giddings (Austin Chalk-3) | Milam | 1 | 130K | 104K | Sep 2011 – Jan 2018 |
| Read, H. N. -D- O-10-45067 | Bayswater Operating Company LLC only | Spraberry (Trend Area) | Howard | 3 | 111K | 169K | Feb 2014 – Jul 2026 |
| Read, W. R. Etal -B- Sec. 48 O-10-2934 | Royalty Resources, L.L.C. only | Iatan, North | Howard | 22 | 107K | 29 | Jan 1993 – Jul 2026 |
| Pitchfork-Toreador "17" O-11-67231 | Sauder Management Company only | Matador-Williams, W. (Tannehill) | Dickens | 2 | 102K | 5 | Apr 1994 – Jul 2026 |
| Thread the Needle O-11-70022 | Tacoma Operating LLC only | Mound Lake, E. (Fusselman) | Lynn | 1 | 98.2K | 26.7K | Jan 2013 – Jul 2026 |
| Treadaway Land Company O-3-306 | Amoco Production Company only | Beaumont, West | Jefferson | 6 | 97.2K | 87.6K | Jan 1993 – Aug 1998 |
| Webb O-11-65531 | Kaiser-Francis Oil Company only | Read (Wolfcamp) | Yoakum | 1 | 94.7K | 6.05K | Jan 1993 – Jul 2026 |
| Read, H. N. -F- O-10-21312 | Bayswater Operating Company LLC only | Coahoma, N. (Clear Fork) | — | 2 | 83.8K | 104K | Jan 1993 – Jul 2026 |
| Threadfin 57-1-47-35 D O-10-62266 | Anadarko E&P Onshore LLC only | Sandbar (Bone Spring) | Reeves | 1 | 80.4K | 226K | Aug 2024 – Jul 2026 |
| Read -A- O-10-2885 | United Oil & Shale LLC only | Iatan, East Howard | — | 5 | 78.8K | 21 | Jan 1993 – Jul 2026 |
| Hamilton-Reader O-3-27123 | Wise Star Energy, LLC only | Serbin (Taylor Sand) | Bastrop | 1 | 78.2K | 183K | Nov 2014 – Jul 2026 |
| H. D. Read et AL O-13-32843 | Upham Oil & Gas Company only | Tidwell (Strawn 4600) | Wise | 1 | 76.2K | 94.1K | Oct 2013 – Jul 2026 |
| Treadaway Unit O-11-63653 | Vanguard Operating, LLC only | Brownfield, S. (Fusselman) | Terry | 1 | 69.6K | 2.36K | Jan 1993 – Jun 2015 |
| Threadfin 57-1-47-35 F O-10-62336 | Anadarko E&P Onshore LLC only | Sandbar (Bone Spring) | Reeves | 1 | 69.5K | 209K | Aug 2024 – Jul 2026 |
| Pitchfork-Toreador "17C" O-11-67601 | Sauder Management Company only | Matador-Williams, W. (Tannehill) | Dickens | 2 | 67.4K | 0 | Aug 1996 – Sep 2017 |
| Read O-11-69366 | Extex Operating Company only | Brahaney (Wolfcamp) | Yoakum | 1 | 65.1K | 1.5K | Feb 2009 – Jul 2026 |
| Read 33 O-10-53512 | Paladin Petroleum III, L.L.C. only | Spraberry (Trend Area) | Howard | 3 | 64.2K | 114K | May 2018 – Jul 2026 |
| Read, D. B. O-11-67813 | Endeavor Energy Resources L.P. only | Ackerly, E. (Penn.) | Dawson | 1 | 64.1K | 41.3K | Nov 1997 – Nov 2022 |
| Read -B- O-10-2886 | United Oil & Shale LLC only | Iatan, East Howard | — | 3 | 63.1K | 21 | Jan 1993 – Jul 2026 |
| Reading-Moss O-10-20113 | Laguna Petroleum Corporation only | Cowden, South (Canyon 8790) | Ector | 3 | 62.6K | 92.3K | Jan 1993 – Nov 2012 |
| Read, C. D. O-10-2888 | Sweet Crude Operating LLC only | Iatan, East Howard | Howard | 3 | 59.6K | 22 | Jan 1993 – Jul 2026 |
| Read O-11-65708 | Ring Energy, Inc. only | Sable (San Andres) | Yoakum | 1 | 56.7K | 23.1K | Jan 1993 – Sep 2020 |