| Read -A- O-10-2885 | United Oil & Shale LLC only | Iatan, East Howard | Howard | 5 | 78.8K | 21 | Jan 1993 – Mar 2026 |
| Hamilton-Reader O-3-27123 | Wise Star Energy, LLC only | Serbin (Taylor Sand) | Bastrop | 1 | 78.2K | 183K | Nov 2014 – Apr 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 – Apr 2026 |
| Treadaway Unit O-11-63653 | Vanguard Operating, LLC only | Brownfield, S. (Fusselman) | Terry | 1 | 69.6K | 2.36K | Jan 1993 – Apr 2009 |
| 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 – Feb 2026 |
| Pitchfork-Toreador "17C" O-11-67601 | Sauder Management Company only | Matador-Williams, W. (Tannehill) | Dickens | 2 | 67.4K | 0 | Aug 1996 – Aug 2009 |
| Read O-11-69366 | Extex Operating Company only | Brahaney (Wolfcamp) | Yoakum | 1 | 65.1K | 1.5K | Feb 2009 – Apr 2026 |
| Read 33 O-10-53512 | Paladin Petroleum III, L.L.C. only | Spraberry (Trend Area) | Howard | 3 | 64.2K | 114K | Apr 2023 – Apr 2026 |
| Read, D. B. O-11-67813 | Endeavor Energy Resources L.P. only | Ackerly, E. (Penn.) | Dawson | 1 | 64.1K | 41.3K | Nov 1997 – Jun 2011 |
| Read -B- O-10-2886 | United Oil & Shale LLC only | Iatan, East Howard | Howard | 3 | 63.1K | 21 | Jan 1993 – Mar 2026 |
| Reading-Moss O-10-20113 | Laguna Petroleum Corporation only | Cowden, South (Canyon 8790) | Ector | 3 | 62.6K | 92.3K | Jan 1993 – Oct 2011 |
| Read, C. D. O-10-2888 | Sweet Crude Operating LLC only | Iatan, East Howard | Howard | 3 | 59.6K | 22 | Jan 1993 – Apr 2026 |
| Read O-11-65708 | Ring Energy, Inc. only | Sable (San Andres) | Yoakum | 1 | 56.7K | 23.1K | Jan 1993 – May 2017 |
| Treadwell, J. H. O-9-5949 | Golden Specialties Oil & Gas only | Fort McKavitt, N. (Canyon Lo.) | Schleicher | 2 | 55.6K | 152K | Jan 1993 – Jun 2021 |
| Treadaway O-6-15231 | Diversified Production LLC only | Willow Springs (Travis Peak) | Gregg | 2 | 55.2K | 81.6K | Nov 2013 – Apr 2026 |
| Treadwell, J. M. O-9-5553 | Bud Oil, Inc. only | Camar, N. (Canyon Sand) | Schleicher | 4 | 54.5K | 149K | Jan 1993 – Apr 2026 |
| Read O-14-4173 | Burk Royalty Co., Ltd. only | Panhandle Hutchinson County Fld. | Hutchinson | 27 | 53.5K | 1.89M | Jan 1993 – Apr 2026 |
| Read, W. R. O-10-19144 | Royalty Resources, L.L.C. only | Iatan, East Howard | Howard | 5 | 51K | 21 | Jan 1993 – Jun 2017 |
| Balerion the Dread 36-24 B O-10-61906 | Birch Operations, Inc. only | Spraberry (Trend Area) | Dawson | 1 | 46.7K | 60.2K | Mar 2024 – Apr 2026 |
| Threadgill G-3-279216 | Orx Resources, L.L.C. only | Kings Court (Y-4) | Newton | 1 | 45.4K | 1.99M | Jan 2015 – Apr 2026 |
| Treadwell O-9-5928 | BRP Energy, LLC only | Fort McKavitt, N. (Canyon Lo.) | Schleicher | 1 | 44.8K | 164 | Jan 1993 – Apr 2025 |
| Treadwell, J. M. O-9-3468 | Mag Exploration LLC only | F & H (Cisco) | Menard | 1 | 41.2K | 22 | Jan 1993 – Dec 2025 |
| Matador-Toreador O-11-67892 | Sutherland Energy Co., LLC only | Matador (Wolfcamp) | Motley | 1 | 40.9K | 0 | Jan 1998 – Oct 2018 |
| Treadwell O-9-13409 | Ozark Exploration, Inc. only | Fort McKavitt (Canyon) | Schleicher | 1 | 40.3K | 157K | Mar 1993 – Nov 2023 |
| Sullivan, Gordon B. O-5-3068 | Treadstone Energy Partners, LLC only | Alabama Ferry (Glenrose D, West) | Leon | 3 | 40.3K | 74.2K | Jan 1993 – Sep 2012 |
| Read O-10-25303 | Campana Petroleum Company only | Coahoma, N. (Fussel) | Howard | 6 | 38.2K | 965K | Jan 1993 – Aug 2016 |
| Read "366" O-11-68541 | Ring Energy, Inc. only | Sable (San Andres) | Yoakum | 2 | 37.8K | 0 | Mar 2003 – Mar 2020 |
| Read, W. R. -A- O-10-2929 | Royalty Resources, L.L.C. only | Iatan, North | Howard | 9 | 37.8K | 30 | Jan 1993 – May 2017 |
| Flowers Read 20 G-14-277904 | Presidio Petroleum LLC only | Buffalo Wallow (Granite Wash) | Hemphill | 1 | 35.2K | 1.71M | Dec 2014 – Apr 2026 |
| Braman, D.H. Jr.et Al O-2-7874 | Home Petroleum Corp. only | Gingerbread (Frio 6720 Sd.) | Victoria | 2 | 33.9K | 34.1K | May 1993 – May 1994 |
| Cogdell Ranch "B" O-11-67842 | Ableready, Inc. only | Gupton (Canyon) | Motley | 2 | 33.6K | 0 | Dec 1997 – Mar 2017 |
| Cogdell Ranch O-11-67229 | Ableready, Inc. only | Gupton (Canyon) | Motley | 1 | 32.8K | 9 | Mar 1994 – Jul 2022 |
| S.N.C. O-11-64981 | Ableready, Inc. only | Gupton (Canyon) | Motley | 1 | 31K | 20 | Feb 1993 – Feb 2022 |
| Flowers Read 53 G-14-278051 | Presidio Petroleum LLC only | Buffalo Wallow (Granite Wash) | Hemphill | 1 | 30K | 2.46M | Feb 2015 – Apr 2026 |
| Read O-10-2936 | Royalty Resources, L.L.C. only | Iatan, North | Howard | 5 | 29.1K | 103 | Jan 1993 – Apr 2017 |
| Treadwell, J. M. O-9-5935 | Bud Oil, Inc. only | Fort McKavitt, N. (Palo Pinto) | Schleicher | 3 | 28.9K | 79K | Jan 1993 – Apr 2026 |
| Treadwell, J. M. O-9-5914 | Bud Oil, Inc. only | Fort McKavitt, N. (Canyon Lo.) | Schleicher | 5 | 27.8K | 75.9K | Jan 1993 – Apr 2026 |
| Read O-14-2709 | Ponderosa TX Operating LLC only | Panhandle Gray County Field | Gray | 20 | 27.1K | 189K | Jan 1993 – Apr 2026 |
| JBM Treadwell O-8-27866 | Salty Lime Energy, LLC only | Throckmorton County Regular | Throckmorton | 4 | 26.2K | 108 | Jun 1996 – Dec 2024 |
| Threadfin 57-1-47-35 G G-10-298476 | Anadarko E&P Onshore LLC only | Sandbar (Bone Spring) | Reeves | 1 | 25.8K | 91K | Aug 2024 – Apr 2026 |
| Mary Read O-10-55529 | Blackbeard Operating, LLC only | Monahans, North (Clearfork) | Winkler | 1 | 25.5K | 61.3K | Nov 2019 – Apr 2026 |
| Treadwell "F" O-8-28421 | Salty Lime Energy, LLC only | Throckmorton County Regular | Throckmorton | 2 | 23.2K | 87 | Mar 1998 – Dec 2024 |
| Jane Read 20 O-10-43975 | Bayswater Operating Company LLC only | Spraberry (Trend Area) | Howard | 1 | 23K | 53.1K | Oct 2012 – Apr 2026 |
| Treadaway "A" O-11-63782 | American Operating Company (A) only | Brownfield, S. (Fusselman) | Terry | 1 | 23K | 52 | Jan 1993 – Dec 2010 |
| Threadgill, Etal O-1-3498 | Navarro Exploration Co., Inc. only | Minerva-Rockdale | Milam | 41 | 22.3K | 45 | Jan 1993 – Feb 2026 |
| Treadwell Trust -19-A O-9-17128 | R3 Operating Corporation only | Fort McKavitt, N. (Canyon) | Schleicher | 1 | 21.4K | 131K | Apr 2010 – Mar 2026 |
| Treadwell Trust -19- O-9-16979 | Boaz Energy II Operating, LLC only | Fort McKavitt, N. (Canyon) | Schleicher | 3 | 21.1K | 172K | Jul 2009 – Aug 2022 |
| Read, Willard R. O-10-2933 | Royalty Resources, L.L.C. only | Iatan, North | Howard | 7 | 20.8K | 30 | Jan 1993 – May 2017 |
| Read 39 O-10-46792 | Paladin Petroleum III, L.L.C. only | Spraberry (Trend Area) | Howard | 1 | 20K | 115K | Apr 2015 – Apr 2022 |
| Read "A" O-11-68587 | Ring Energy, Inc. only | Sable (San Andres) | Yoakum | 1 | 19.4K | 0 | Jun 2003 – Mar 2016 |