| Hartgrove 0304 A O-9-21085 | Apache Corporation only | Spraberry (Trend Area) | Reagan | 1 | 363K | 1.52M | Apr 2021 – Aug 2026 |
| Hickman, N. W. -A- O-9-92 | Bridwell Oil Co. only | Barnhart | Reagan | 2 | 362K | 283K | by Jan 1993 – Aug 2026 |
| Barnhart (EF) A O-1-16380 | Ensign Natural Resources II LLC only | Eagleville (Eagle Ford-1) | Gonzales | 2 | 358K | 829K | Dec 2012 – Sep 2025 |
| Hannah G-3-282399 | Hilcorp Energy Company only | Hartburg, S. (Hackberry 1ST) | Orange | 1 | 358K | 837K | Feb 2017 – Aug 2026 |
| Lockhart O-10-31036 | Winn Operating, LLC only | Martin (Second Simpson Sd.) | Andrews | 1 | 356K | 90.3K | by Jan 1993 – Aug 2026 |
| Linhart Patton Psa A O-2-13163 | Murphy Expl. & Prod. Co. - USA only | Eagleville (Eagle Ford-2) | Karnes | 1 | 352K | 456K | May 2025 – Aug 2026 |
| Wharton, A. B. Jr. "E" Joa O-11-68760 | Sabinal Energy Operating, LLC only | Robertson, N. (San Andres) | Gaines | 6 | 351K | 81.6K | Mar 2005 – Feb 2020 |
| Hartman A G-2-287645 | BPX Operating Company only | Eagleville (Eagle Ford-2) | De Witt | 1 | 351K | 1.5M | Dec 2015 – Aug 2026 |
| Hartley 38 O-10-39557 | Apache Corporation only | Spraberry (Trend Area) | Glasscock | 15 | 348K | 5.5M | Dec 2008 – Aug 2026 |
| Barnhart (EF) C-E SA 1 O-1-20395 | Ensign Natural Resources II LLC only | Eagleville (Eagle Ford-1) | Gonzales | 1 | 343K | 629K | Jun 2021 – Aug 2026 |
| Lockhart O-10-26353 | Huntington Energy, L.L.C. only | Martin (Clear Fork) | Andrews | 11 | 339K | 5.86M | by Jan 1993 – May 2010 |
| Burkhart O-3-24279 | Brigham Oil & Gas, L.P. only | Provedence (Frio) | Matagorda | 1 | 339K | 2.2M | Jul 2002 – Jun 2008 |
| Barnhart (Ef)-J.M. Preston SA3 O-2-12714 | Ensign Natural Resources II LLC only | Eagleville (Eagle Ford-2) | Gonzales | 1 | 334K | 210K | Oct 2023 – Aug 2026 |
| Dreams of Oil O-14-8180 | Fortay, Inc. only | Hartley, SE (Granite Wash 6669) | Hartley | 2 | 333K | 0 | Jun 2010 – Jan 2026 |
| Hartman-Rippstein Mikkelson SA1 O-2-12829 | Marathon Oil EF LLC only | Eagleville (Eagle Ford-2) | Karnes | 1 | 331K | 427K | Aug 2024 – Aug 2026 |
| Hartman A-Cantu a SA 3 G-2-298340 | BPX Operating Company only | Eagleville (Eagle Ford-2) | De Witt | 1 | 331K | 1.39M | Feb 2025 – Aug 2026 |
| Hartgrove 0304 F O-9-21112 | Apache Corporation only | Spraberry (Trend Area) | Reagan | 1 | 321K | 1.4M | May 2021 – Aug 2026 |
| Linhart Patton Wilson Psa A O-2-13164 | Murphy Expl. & Prod. Co. - USA only | Eagleville (Eagle Ford-2) | Karnes | 1 | 316K | 432K | May 2025 – Aug 2026 |
| Airhart Cole 54 O-10-44725 | Owl Ops LLC only | Spraberry (Trend Area) | Martin | 5 | 311K | 873K | Oct 2013 – Aug 2026 |
| Hartgrove 0304 D O-9-21111 | Apache Corporation only | Spraberry (Trend Area) | Reagan | 1 | 309K | 1.13M | Apr 2021 – Aug 2026 |
| Lockhart O-10-25948 | Montare Operating, Ltd. only | Fuhrman-Mascho | Andrews | 23 | 302K | 122K | by Jan 1993 – Aug 2026 |
| Hartman A G-2-287626 | BPX Operating Company only | Eagleville (Eagle Ford-2) | De Witt | 1 | 302K | 1.21M | Nov 2015 – Aug 2026 |
| Barnhart Grand F Unit-E Unit SA O-1-20794 | Ensign Natural Resources II LLC only | Eagleville (Eagle Ford-1) | Gonzales | 1 | 301K | 553K | Nov 2022 – Jul 2026 |
| Hartgrove 0304 C O-9-21133 | Apache Corporation only | Spraberry (Trend Area) | Reagan | 1 | 297K | 1.31M | May 2021 – Aug 2026 |
| Hartman Unit A G-2-266872 | Burlington Resources O & G Co LP only | Sugarkane (Eagle Ford) | De Witt | 1 | 295K | 3.32M | May 2013 – Aug 2026 |
| C.C. Lockhart & Brown B O-10-15279 | Montare Operating, Ltd. only | Fuhrman-Mascho | Andrews | 18 | 287K | 241K | by Jan 1993 – Aug 2026 |
| Linhart Wilson Psa D O-2-13203 | Murphy Expl. & Prod. Co. - USA only | Eagleville (Eagle Ford-2) | Karnes | 1 | 284K | 414K | May 2025 – Aug 2026 |
| Barnhart (EF) L O-1-17333 | Ensign Natural Resources II LLC only | Eagleville (Eagle Ford-1) | Gonzales | 1 | 280K | 512K | Dec 2013 – Aug 2026 |
| Wharton, A. B. Jr. "a" Joa O-11-68699 | Sabinal Energy Operating, LLC only | Robertson, N. (San Andres) | Gaines | 11 | 268K | 20.9K | Aug 2004 – Feb 2020 |
| Linhart Wilson Psa E O-2-13174 | Murphy Expl. & Prod. Co. - USA only | Eagleville (Eagle Ford-2) | Karnes | 1 | 265K | 373K | May 2025 – Aug 2026 |
| Linhart Wilson Psa B O-2-13139 | Murphy Expl. & Prod. Co. - USA only | Eagleville (Eagle Ford-2) | Karnes | 1 | 258K | 388K | Apr 2025 – Aug 2026 |
| Barnhart (EF) 2H Unit SA O-1-20580 | Ensign Natural Resources II LLC only | Eagleville (Eagle Ford-1) | Gonzales | 1 | 254K | 374K | Sep 2022 – Aug 2026 |
| F.johnson-J.tschirhart 10H Psa G-2-287170 | Marathon Oil EF LLC only | Sugarkane (Eagle Ford) | Karnes | 1 | 251K | 2.11M | May 2019 – Aug 2026 |
| Barnhart (Ef)-J.M. Preston SA1 O-1-21712 | Ensign Natural Resources II LLC only | Eagleville (Eagle Ford-1) | Gonzales | 1 | 251K | 153K | Jan 2025 – Aug 2026 |
| Hartman A G-2-287627 | BPX Operating Company only | Eagleville (Eagle Ford-2) | De Witt | 1 | 251K | 979K | Dec 2015 – Aug 2026 |
| Lindsey GU 1 G-3-138869 | Exxon Corp. only | Hartburg, S.E. (Yegua EY-2) | Orange | 1 | 251K | 2.36M | by Jan 1993 – Mar 1996 |
| Hartel O-3-24975 | Cimarex Energy Co. only | Liberty, South | Liberty | 3 | 248K | 206K | Nov 2006 – Oct 2011 |
| Barnhart Unit A O-2-10558 | Burlington Resources O & G Co LP only | Eagleville (Eagle Ford-2) | De Witt | 1 | 248K | 453K | Jul 2013 – Aug 2026 |
| Barnhart (EF) 2H Unit-J Unit SA O-1-20595 | Ensign Natural Resources II LLC only | Eagleville (Eagle Ford-1) | Gonzales | 1 | 245K | 531K | Sep 2022 – Aug 2026 |
| Barnhart 77S75 C O-9-21947 | Permian Resources Operating, LLC only | Spraberry (Trend Area) | Irion | 1 | 238K | 1.66M | Jul 2023 – Aug 2026 |
| Linhart Patton Wilson Psa B O-2-13165 | Murphy Expl. & Prod. Co. - USA only | Eagleville (Eagle Ford-2) | Karnes | 1 | 238K | 251K | May 2025 – Aug 2026 |
| Hartgrove 0304 E O-9-21106 | Apache Corporation only | Spraberry (Trend Area) | Reagan | 1 | 236K | 1.25M | May 2021 – Aug 2026 |
| Lockhart Bank Oil Unit #3 O-3-16117 | Hockley Energy, Inc. only | Alvin, South (#39) | Brazoria | 2 | 230K | 338K | by Jan 1993 – May 2014 |
| Linhart Dillon Barnett Psa A O-2-13136 | Murphy Expl. & Prod. Co. - USA only | Eagleville (Eagle Ford-2) | Karnes | 1 | 224K | 326K | Apr 2025 – Aug 2026 |
| Johnson-Patino-Tschirhart 8H Psa G-2-287145 | Marathon Oil EF LLC only | Sugarkane (Eagle Ford) | Karnes | 1 | 224K | 1.77M | May 2019 – Dec 2022 |
| Johnson-Tschirhart Unit G-2-268960 | Marathon Oil EF LLC only | Sugarkane (Eagle Ford) | Karnes | 1 | 223K | 1.28M | Sep 2012 – Aug 2026 |
| Linhart Wilson Psa A O-2-13138 | Murphy Expl. & Prod. Co. - USA only | Eagleville (Eagle Ford-2) | Karnes | 1 | 223K | 418K | Apr 2025 – Aug 2026 |
| Hartgrove 0304 B O-9-21131 | Apache Corporation only | Spraberry (Trend Area) | Reagan | 1 | 219K | 1.46M | May 2021 – Aug 2026 |
| Hartman-Black Usw D G-2-297665 | Burlington Resources O & G Co LP only | Sugarkane (Eagle Ford) | De Witt | 1 | 213K | 2.26M | Aug 2024 – Apr 2026 |
| Barnhart (Ellenburger)unit O-9-15018 | Martin, Jimmy Inc only | Barnhart | Reagan | 4 | 211K | 1.13M | Sep 2000 – Aug 2026 |