| Cotropia-Ferrara Unit O-3-23238 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 5 | 1.79M | 1.07M | Apr 1997 – Jul 2026 |
| Scamardo-Cotropia Unit O-3-23155 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 3 | 1.66M | 1.1M | Nov 1996 – Jul 2026 |
| Pabst Unit O-3-23439 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 3 | 1.25M | 879K | Oct 1997 – Jul 2026 |
| Flowers-Reistino Unit O-3-23079 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 4 | 1.19M | 913K | Apr 1996 – Jul 2026 |
| Loraine McMurrey Trust O-3-26217 | Wildfire Energy Operating LLC only | Madisonville, W. (Woodbine -A-) | Robertson | 5 | 1.13M | 310K | Oct 2012 – Jul 2026 |
| Muse-Cash Unit O-3-23328 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 2 | 779K | 655K | Aug 1997 – Jul 2026 |
| Muse-Fazzino Unit O-3-23484 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 3 | 771K | 235K | Mar 1998 – Jul 2026 |
| Cotropia-Perrone Unit O-3-23314 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 1 | 753K | 366K | Jul 1997 – Jul 2026 |
| Kapser Unit O-3-23425 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 3 | 652K | 447K | Dec 1997 – Jul 2026 |
| Ortiz Unit O-5-3537 | CML Exploration, LLC only | Ici (Georgetown) | Robertson | 1 | 612K | 250K | Jan 1997 – Jul 2026 |
| Clyde Williams Unit O-3-25875 | Wildfire Energy Operating LLC only | Madisonville, W. (Woodbine -A-) | Robertson | 4 | 588K | 138K | Feb 2012 – Jul 2026 |
| Cotropia-Frazier Unit O-3-23421 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 1 | 581K | 328K | Dec 1997 – Jul 2026 |
| PMF O-3-27925 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 1 | 559K | 570K | Jul 2021 – Jul 2026 |
| Sandifer Unit O-5-3547 | CML Exploration, LLC only | Ici (Georgetown) | Robertson | 1 | 540K | 188K | Mar 1997 – Jul 2026 |
| Perrone-Muse Unit O-3-23355 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 1 | 532K | 256K | Sep 1997 – Jul 2026 |
| Kubin-Scamardo Unit O-3-23338 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 1 | 529K | 394K | Jul 1997 – Jul 2026 |
| Holland Unit O-5-4415 | Wildfire Energy Operating LLC only | Aguila Vado (Eagleford) | Robertson | 2 | 472K | 120K | Jun 2019 – Jul 2026 |
| Hancock O-3-20921 | Northfield Enterprises, Inc. only | Kurten (Buda) | Robertson | 6 | 472K | 430K | Jan 1993 – Jun 2025 |
| Robbins - Loria Unit O-3-23009 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 3 | 471K | 421K | May 1996 – Jul 2026 |
| Lightsey-Capps Unit O-3-22559 | Wildfire Energy Operating LLC only | Kurten (Buda) | Robertson | 2 | 457K | 550K | Oct 1994 – Jul 2026 |
| Blacktail Unit O-3-23564 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 2 | 455K | 363K | Aug 1998 – Jul 2026 |
| Pronghorn Unit O-3-23879 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 2 | 446K | 356K | Oct 1999 – Jul 2026 |
| Alliance Trust Unit O-3-22498 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 1 | 445K | 474K | Sep 1994 – Jul 2026 |
| Broughton-Perrone Unit O-3-23387 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 1 | 445K | 173K | Nov 1997 – Jul 2026 |
| Scamardo-Kubin Unit O-3-22656 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 1 | 445K | 235K | Feb 1995 – Jul 2026 |
| Merka Unit O-3-22903 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 2 | 443K | 211K | Nov 1995 – Jul 2026 |
| Scarpinato-Denena Unit O-3-23219 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 2 | 440K | 170K | Mar 1997 – Jul 2026 |
| Wapiti Unit O-3-23464 | Magnolia Oil & Gas Operating LLC only | Giddings (Buda) | Robertson | 1 | 429K | 206K | Feb 1998 – Jul 2026 |
| Cooper-Ransom Unit O-3-22433 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 1 | 419K | 335K | Feb 1994 – Jul 2026 |
| Delley-Ruffino Unit O-3-22640 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 2 | 415K | 319K | Sep 1994 – Jul 2026 |
| Strohs Unit O-3-23247 | Wildfire Energy Operating LLC only | Giddings (Buda) | Robertson | 1 | 409K | 189K | May 1997 – Jul 2026 |
| Kubin-Pope Unit O-3-23246 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 1 | 408K | 325K | Mar 1997 – Jul 2026 |
| Denena-Ely Unit O-3-23351 | Wildfire Energy Operating LLC only | Giddings (Buda) | Robertson | 2 | 401K | 48.9K | Oct 1997 – Jul 2026 |
| Eva O-5-3562 | CML Exploration, LLC only | Ici (Georgetown) | Robertson | 1 | 400K | 161K | Aug 1997 – Jul 2026 |
| S. P. Scamardo-Seilevco L Unit O-3-23923 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 2 | 398K | 331K | Nov 2000 – Jul 2026 |
| Smith, Georgette O-5-2806 | CML Exploration, LLC only | Ici (Georgetown) | Robertson | 1 | 395K | 193K | Jan 1993 – Jul 2026 |
| Lightsey a EF O-3-28072 | Wildfire Energy Operating LLC only | Giddings (Eagleford) | Robertson | 2 | 393K | 170K | Jul 2023 – Jul 2026 |
| State-Cotropia Unit O-3-25126 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 2 | 386K | 188K | Nov 2007 – Jul 2026 |
| Double Diamond Unit O-3-22930 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 2 | 365K | 304K | Nov 1995 – Jul 2026 |
| Ewell, Charlotte Unit O-3-23954 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 2 | 364K | 521K | Jan 2001 – Jul 2026 |
| Scarpinato-Reistino Unit O-3-23304 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 2 | 363K | 172K | Jul 1997 – Jul 2026 |
| McDonald O-5-4077 | Wildfire Energy Operating LLC only | Aguila Vado (Eagleford) | Robertson | 2 | 358K | 165K | Aug 2013 – Jul 2026 |
| Armstrong Unit O-5-3552 | Sage Energy Company only | Ici (Georgetown) | Robertson | 1 | 353K | 55.8K | May 1997 – Aug 2000 |
| Rattlesnake Unit O-3-23227 | Magnolia Oil & Gas Operating LLC only | Giddings (Buda) | Robertson | 1 | 344K | 234K | Apr 1997 – Jul 2026 |
| Spring Valley Ranch O-3-22944 | Northfield Enterprises, Inc. only | Giddings (Buda) | Robertson | 4 | 343K | 374K | Oct 1995 – Feb 2025 |
| SVR 'B' O-5-4194 | Northfield Enterprises, Inc. only | Aguila Vado (Eagleford) | Robertson | 3 | 330K | 49.6K | Oct 2014 – Jul 2026 |
| Lightsey-Langford Unit O-3-22819 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 1 | 329K | 324K | Jul 1995 – Jul 2026 |
| Beverly Gale O-3-27979 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 1 | 319K | 525K | Nov 2021 – Jul 2026 |
| Scamardo Unit O-3-23472 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Robertson | 1 | 317K | 167K | May 1997 – Jul 2026 |
| Spring Valley Ranch LL O-3-25423 | Northfield Enterprises, Inc. only | Giddings (Austin Chalk-3) | Robertson | 1 | 312K | 56.5K | Dec 2008 – Jul 2026 |