| Oxford Unit O-2-9825 | Marathon Oil EF LLC only | Eagleville (Eagle Ford-2) | Karnes | 6 | 1.88M | 2.56M | Nov 2011 – Apr 2026 |
| Davidson Oxford Unit O-2-11123 | Marathon Oil EF LLC only | Eagleville (Eagle Ford-2) | Karnes | 7 | 1.81M | 2.23M | Apr 2015 – Apr 2026 |
| Anzaldua Oxford Unit O-2-10613 | Marathon Oil EF LLC only | Eagleville (Eagle Ford-2) | Karnes | 5 | 1.29M | 1.63M | Aug 2013 – Apr 2026 |
| East Ford Unit O-10-32818 | Orla Petco, Inc. only | Ford, East (Delaware Sand) | Reeves | 46 | 941K | 2.59M | Jan 1993 – Mar 2026 |
| Drgac-Alford Unit O-3-22136 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Burleson | 1 | 484K | 370K | Aug 1993 – Mar 2026 |
| Blanford Unit O-2-10581 | Murphy Expl. & Prod. Co. - USA only | Eagleville (Eagle Ford-2) | Karnes | 2 | 450K | 557K | Jul 2013 – Apr 2026 |
| Kutzschbach-Langford Unit O-3-22430 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Brazos | 2 | 384K | 236K | May 1994 – Mar 2026 |
| NE Shackelford Unit O-8-16041 | Van Operating, Ltd. only | Shackelford Ne(miss) | Shackelford | 58 | 369K | 2.64M | Jan 1993 – Jul 2018 |
| Medford Unit a Las O-1-16328 | Ineos USA Oil & Gas LLC only | Eagleville (Eagle Ford-1) | La Salle | 1 | 342K | 309K | Jul 2012 – Apr 2026 |
| Lightsey-Langford Unit O-3-22819 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 1 | 329K | 324K | Jul 1995 – Jan 2025 |
| Weatherford Unit O-3-23656 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Milam | 1 | 296K | 282K | Jan 1998 – Apr 2026 |
| Stafford Unit O-1-15894 | EOG Resources, Inc. only | Eagleville (Eagle Ford-1) | Gonzales | 3 | 281K | 301K | May 2012 – Apr 2026 |
| Rutherford Unit A O-2-10137 | Burlington Resources O & G Co LP only | Eagleville (Eagle Ford-2) | Karnes | 1 | 269K | 450K | Nov 2012 – Apr 2026 |
| Medford Unit C Las O-1-16719 | Ineos USA Oil & Gas LLC only | Eagleville (Eagle Ford-1) | La Salle | 1 | 267K | 386K | Jan 2013 – Apr 2026 |
| Spearman-Alford Unit O-3-21823 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Burleson | 1 | 244K | 459K | Jan 1993 – Mar 2026 |
| Albright-Weatherford Unit O-3-23664 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Milam | 1 | 240K | 266K | Aug 1997 – Apr 2026 |
| Weeber-Alford Unit O-3-24306 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Burleson | 1 | 232K | 296K | May 2002 – Mar 2026 |
| Alford Unit O-3-22477 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Burleson | 1 | 168K | 136K | Jul 1994 – Mar 2026 |
| Perry-Alford Unit O-3-23203 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Burleson | 1 | 132K | 24.4K | Feb 1997 – Mar 2026 |
| Lunsford Unit O-8-27445 | Stovall Operating Co. only | Throckmorton County Regular | Throckmorton | 1 | 128K | 0 | Feb 1995 – Apr 2026 |
| Alford Unit O-3-14507 | Adams Resources Expl. Corp. only | Giddings (Austin Chalk-3) | Lee | 2 | 127K | 705K | Jan 1993 – Aug 2016 |
| Sanford Unit Dim O-1-15589 | Exco Operating Company, LP only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 123K | 184K | Nov 2011 – Apr 2026 |
| Orca Eagleford Unit O-5-4146 | Wildfire Energy Operating LLC only | Aguila Vado (Eagleford) | Brazos | 1 | 123K | 86.6K | May 2014 – Mar 2026 |
| Deford Unit a/C #2 O-10-34692 | Morningstar Operating LLC only | Andrews (Wolfcamp-Penn.) | Andrews | 4 | 93.7K | 155K | Oct 1995 – Apr 2026 |
| Alford-Alford Unit O-3-25717 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Burleson | 1 | 71.7K | 11 | Aug 2010 – Mar 2026 |
| Ray Ann Alford Unit O-3-25647 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Burleson | 1 | 71.3K | 12 | Aug 2010 – Mar 2026 |
| McClellan-Swofford Unit O-13-30128 | Corda Corporation only | Medicine Mounds, SE (Miss) | Hardeman | 1 | 57.5K | 0 | Feb 2003 – Apr 2026 |
| Parrott-Lunsford Unit O-8-10654 | Stovall Operating Co. only | Throckmorton County Regular | Throckmorton | 1 | 57.4K | 4.43K | Jan 1993 – Sep 2012 |
| Weeber-Alford Unit O-3-25617 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Burleson | 1 | 52.3K | 1.09K | Mar 2010 – Mar 2026 |
| Ford Unit O-13-14547 | Petex only | Dimock (Congl.) | Montague | 2 | 47.8K | 303K | Jan 1993 – Apr 2026 |
| Scamardo-Bradford Unit O-3-25304 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 1 | 42.7K | 3 | Apr 2008 – Mar 2026 |
| Deford Unit O-10-11321 | Union Oil Company of California only | Andrews (Wolfcamp) | Andrews | 4 | 42.5K | 69.1K | Jan 1993 – Sep 1995 |
| Jones-Ford Unit O-13-8555 | TB Petroleum, LLC only | Archer County Regular | Archer | 1 | 30.7K | 21 | Jan 1993 – Apr 2026 |
| Stasny Medford Unit O-8-31489 | G & F Oil, Inc. only | Rockdale (Cisco Lime) | Haskell | 1 | 29.9K | 0 | Apr 2014 – Apr 2026 |
| Weeber-Alford Unit O-3-24190 | Wildfire Energy Operating LLC only | Giddings (Buda) | Burleson | 1 | 23.4K | 39.3K | Feb 2002 – May 2002 |
| Schaefer-Manford Unit O-1-12982 | Burlington Resources Oil&gas Co. only | First Shot (Austin Chalk) | Gonzales | 1 | 19.5K | 11 | Feb 1993 – Feb 1994 |
| Parrott-Lunsford Unit O-8-31620 | Stovall Operating Co. only | Parrott-Atkinson (Mississippian) | Throckmorton | 1 | 18.6K | 0 | Oct 2012 – May 2020 |
| Medford Unit E Las O-1-21133 | Ineos USA Oil & Gas LLC only | Eagleville (Eagle Ford-1) | La Salle | 1 | 14.1K | 4.94K | Oct 2023 – Apr 2026 |
| Willeford Unit O-6-15382 | Diversified Production LLC only | Walkers Chapel (Pettit 8100) | Cherokee | 1 | 12.4K | 0 | Jan 2015 – Dec 2023 |
| Lovvorn-Buford Unit O-8-30971 | Petex only | Just Red Dirt Reef (Palo Pinto) | Haskell | 1 | 8.34K | 0 | May 2012 – Jun 2025 |
| Ford Unit O-13-28871 | Lane Operating Company only | Joy, S. (Caddo) | Clay | 1 | 7.17K | 36.9K | Nov 1994 – Aug 1995 |
| Cecelia - Bedford Unit O-3-23325 | Landmark Exploration Inc. only | Giddings (Austin Chalk-3) | Burleson | 1 | 6.02K | 141K | Nov 1996 – Jun 2001 |
| Graford Unit O-13-32037 | J-Tec Operating, LLC only | Newark, East (Barnett Shale) | Palo Pinto | 1 | 4.64K | 44.1K | Jul 2011 – Oct 2020 |
| Lunsford Unit (Caddo) O-8-27694 | Stovall Operating Co. only | Throckmorton County Regular | Throckmorton | 1 | 2.54K | 0 | Nov 1995 – Feb 2000 |
| Ford Unit O-5-2529 | Tightrock Enterprises, Inc. only | Corsicana (Shallow) | Navarro | 1 | 1.97K | 39 | Feb 1993 – Dec 2024 |
| Mumford Unit O-2-11114 | Magnolia Oil & Gas Operating LLC only | Eagleville (Eagle Ford-2) | Karnes | 2 | 453 | 3.64K | Jan 2022 – Jan 2022 |
| Deford Unit a/C #2 O-10-11262 | Union Oil Company of California only | Andrews (Pennsylvanian) | Andrews | 3 | 283 | 384 | Jan 1993 – Feb 1993 |
| Crawford Unit O-13-24734 | S & J Operating Co. only | Shirley (Caddo Congl.) | Montague | 1 | 121 | 549 | Jan 1993 – Jan 1993 |
| High Hopes/Lunsford Unit O-13-27009 | Hughes, Bill Drilling, Inc. only | Archer County Regular | Archer | 1 | 2 | 12 | Jan 1993 – Oct 2004 |
| Elona Alford Unit O-5-3779 | Momentum Production Corp. only | Wildcat | Falls | 1 | 0 | 0 | — |