| Challenger Unit C O-2-10446 | Marathon Oil EF LLC only | Eagleville (Eagle Ford-2) | Karnes | 10 | 3.86M | 5.62M | Feb 2013 – Jul 2026 |
| Allen Trust Unit O-1-16691 | EOG Resources, Inc. only | Eagleville (Eagle Ford-1) | Gonzales | 11 | 3.08M | 2.54M | Feb 2013 – Jul 2026 |
| Ballenger O-10-40247 | Apache Corporation only | Spraberry (Trend Area) | Glasscock | 53 | 3.01M | 18.6M | Jun 2010 – Jul 2026 |
| Challenger Unit A O-2-10519 | Marathon Oil EF LLC only | Eagleville (Eagle Ford-2) | Karnes | 11 | 2.93M | 4.38M | Feb 2012 – Jul 2026 |
| Challenger Unit B O-2-10434 | Marathon Oil EF LLC only | Eagleville (Eagle Ford-2) | Karnes | 9 | 2.6M | 3.11M | Feb 2013 – Jul 2026 |
| Dickson-Allen Unit O-2-9833 | Devon Energy Production Co, L.P. only | Eagleville (Eagle Ford-2) | Karnes | 11 | 2.27M | 2.52M | Sep 2011 – Jul 2026 |
| Allen, J. E. -B- O-1-2272 | Texas Petroleum Investment Co. only | Luling-Branyon | Guadalupe | 24 | 2.02M | 21.9K | Jan 1993 – Jul 2026 |
| Allen, J. E. -A- O-1-3671 | Texas Petroleum Investment Co. only | Luling-Branyon | Guadalupe | 40 | 1.57M | 120K | Jan 1993 – Jul 2026 |
| Allen Unit A O-2-9891 | Burlington Resources O & G Co LP only | Eagleville (Eagle Ford-2) | Karnes | 5 | 1.51M | 2.8M | Oct 2011 – Jul 2026 |
| Challenger Unit C AC O-2-11418 | Marathon Oil EF LLC only | Sugarkane (Austin Chalk) | Karnes | 3 | 1.38M | 3.42M | Jun 2017 – Jul 2026 |
| Allen, R. S. O-13-26755 | Waggoner Operating, L.L.C. only | Wichita County (Special) | Wichita | 162 | 1.26M | 813K | Jan 1993 – Jul 2026 |
| Yarbrough & Allen O-10-37187 | Aghorn Operating, Inc. only | Yarbrough & Allen (Devonian) | Ector | 8 | 1.12M | 2.82M | Oct 2003 – Jul 2026 |
| George Allen Unit O-11-66220 | Capturepoint LLC only | George Allen (San Andres) | Gaines | 34 | 881K | 652K | Jan 1993 – Jul 2026 |
| Yarbrough & Allen O-10-16663 | Aghorn Operating, Inc. only | Yarbrough & Allen (Devonian) | Ector | 11 | 715K | 678K | Jan 1993 – Jul 2026 |
| Challenger Unit B AC O-2-11630 | Marathon Oil EF LLC only | Sugarkane (Austin Chalk) | Karnes | 2 | 696K | 1.87M | Nov 2018 – Jul 2026 |
| Allen 39 O-10-48792 | Permian Resources Operating, LLC only | Wolfbone (Trend Area) | Reeves | 2 | 630K | 1.31M | Mar 2017 – Jul 2026 |
| Allen-Newman 12A O-10-54537 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Glasscock | 1 | 587K | 615K | Apr 2020 – Jul 2026 |
| Allen-Newman 12C O-10-54539 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Glasscock | 1 | 583K | 710K | Apr 2020 – Jul 2026 |
| Challenger AC Unit A O-2-12193 | Marathon Oil EF LLC only | Sugarkane (Austin Chalk) | Karnes | 2 | 549K | 1.45M | Jun 2021 – Jul 2026 |
| Allen-Newman 12B O-10-54538 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Glasscock | 1 | 539K | 548K | Apr 2020 – Jul 2026 |
| Dickson-Allen Unit O-2-12017 | Devon Energy Production Co, L.P. only | Sugarkane (Austin Chalk) | Karnes | 4 | 528K | 1.46M | Dec 2019 – Jul 2026 |
| Yarbrough & Allen O-10-19266 | Aghorn Operating, Inc. only | Arenoso (Strawn Detritus) | Winkler | 23 | 493K | 2.06M | Jan 1993 – Jul 2026 |
| Allen, Red River O-13-26754 | Waggoner Operating, L.L.C. only | Wichita County (Special) | Wichita | 59 | 427K | 309K | Jan 1993 – Jul 2026 |
| Yarbrough & Allen O-10-16664 | Aghorn Operating, Inc. only | Yarbrough & Allen (Ellenburger) | Ector | 14 | 410K | 274K | Jan 1993 – Jul 2026 |
| Allen Pagel Unit O-1-16692 | EOG Resources, Inc. only | Eagleville (Eagle Ford-1) | Gonzales | 1 | 399K | 439K | Feb 2013 – Jul 2026 |
| Challenger Unit B-a AC SA O-2-12180 | Marathon Oil EF LLC only | Sugarkane (Austin Chalk) | Karnes | 1 | 359K | 912K | Jun 2021 – Jul 2026 |
| Lewallen, W. F. O-11-65002 | Crescent Energy Operating, LLC only | Tex-Mex, SE. (Wichita Albany) | Gaines | 11 | 350K | 705K | Jan 1993 – Jul 2026 |
| Dickson-Allen O-1-15521 | FW Eagle Ford I, LLC only | Eagleville (Eagle Ford-1) | Gonzales | 2 | 344K | 165K | Aug 2011 – Jul 2026 |
| Challenger State O-10-49195 | Permian Resources Operating, LLC only | Phantom (Wolfcamp) | Reeves | 1 | 339K | 449K | Nov 2015 – Jul 2026 |
| Allen-Dansby Unit O-3-22225 | Anadarko E&P Company LP only | Giddings (Austin Chalk-3) | Brazos | 1 | 327K | 1.4M | Nov 1993 – Mar 2007 |
| Allen MCM O-1-19414 | Silverbow Resources Oper, LLC only | Eagleville (Eagle Ford-1) | McMullen | 2 | 325K | 972K | May 2018 – Jul 2026 |
| Harrison & Allen O-13-1607 | R2Q Operating LLC only | Clay County Regular | Clay | 34 | 324K | 32 | Jan 1993 – Jul 2026 |
| Challenger State A O-10-58608 | Permian Resources Operating, LLC only | Phantom (Wolfcamp) | Reeves | 1 | 311K | 758K | May 2022 – Jul 2026 |
| Roy Linn 653 O-14-9679 | Mewbourne Oil Company only | Allen-Parker (Marmaton) | Ochiltree | 2 | 307K | 1.82M | Jan 2019 – Jul 2026 |
| Allen, J E B 07-H O-1-14378 | Texas Petroleum Investment Co. only | Luling-Branyon | Guadalupe | 1 | 295K | 0 | Aug 2001 – Oct 2013 |
| Challenger Unit C-B SA O-2-12092 | Marathon Oil EF LLC only | Eagleville (Eagle Ford-2) | Karnes | 1 | 283K | 432K | Aug 2020 – Jul 2026 |
| Carlinville National Bank O-10-15281 | Formentera Operations LLC only | Yarbrough & Allen (Devonian) | Ector | 5 | 283K | 396K | Jan 1993 – Jul 2026 |
| Allen O-10-47211 | Permian Resources Operating, LLC only | Phantom (Wolfcamp) | Reeves | 3 | 281K | 917K | Feb 2015 – Jul 2026 |
| Allen O-10-37575 | Petroplex Energy Inc. only | Spraberry (Trend Area) | Martin | 4 | 272K | 1.08M | Apr 2005 – Jul 2026 |
| Courson Herndon 656/577 O-14-9785 | Mewbourne Oil Company only | Allen-Parker (Marmaton) | Ochiltree | 2 | 266K | 1.74M | Mar 2022 – Jul 2026 |
| Santa FE 1002 O-14-8860 | Highmark Energy Operating, LLC only | Allen-Parker (Marmaton) | Ochiltree | 2 | 263K | 658K | Feb 2013 – Jul 2026 |
| O'Dell 60 O-14-9449 | Presidio Petroleum LLC only | Allen-Parker (Marmaton) | Ochiltree | 1 | 255K | 309K | Mar 2015 – Jul 2026 |
| Ballenger O-10-40295 | Apache Corporation only | Jailhouse (Fusselman) | Glasscock | 5 | 253K | 735K | Aug 2010 – Jul 2026 |
| Ruth Hudson O-11-69338 | Capturepoint LLC only | George Allen (San Andres) | Gaines | 9 | 252K | 232K | Apr 2008 – Jul 2026 |
| Stone-Mason 935 O-14-8693 | Mewbourne Oil Company only | Allen-Parker (Marmaton) | Ochiltree | 3 | 250K | 1.18M | Aug 2012 – Jul 2026 |
| Henry L. Allen Unit O-3-22231 | Enervest Operating, L.L.C. only | Giddings (Austin Chalk-3) | Brazos | 1 | 248K | 1.11M | Oct 1993 – Aug 2009 |
| Burditt, Allen L. O-2-792 | Abaco Operating, LLC only | LA Ward, North | Jackson | 4 | 244K | 30.4K | Jan 1993 – Jul 2026 |
| Ortha Jones 41 O-14-9560 | Mewbourne Oil Company only | Allen-Parker (Marmaton) | Ochiltree | 2 | 240K | 503K | Nov 2017 – Jul 2026 |
| Allen Unit O-1-17714 | Murphy Expl. & Prod. Co. - USA only | Eagleville (Eagle Ford-1) | Atascosa | 2 | 236K | 306K | Mar 2014 – Jul 2026 |
| Pshigoda "933" O-14-8151 | Mewbourne Oil Company only | Allen-Parker (Marmaton) | Ochiltree | 3 | 235K | 1.22M | May 2010 – Jul 2026 |