| Stiles 16 O-14-8944 | Formentera Operations LLC | Mills Ranch (Granite Wash Cons.) | Wheeler | 2 | 186K | 1.36M | Jul 2013 – Aug 2026 |
| State of Texas -DV- O-10-15047 | Formentera Operations LLC | Dune | Crane | 10 | 185K | 104K | by Jan 1993 – Aug 2026 |
| Stiles 4 O-14-8797 | Formentera Operations LLC | Mills Ranch (Granite Wash Cons.) | Wheeler | 1 | 179K | 747K | Feb 2013 – Aug 2026 |
| Moore 62 G-14-265747 | Formentera Operations LLC | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 178K | 4.91M | May 2012 – Aug 2026 |
| Stiles 4B O-14-9048 | Formentera Operations LLC | Mills Ranch (Granite Wash Cons.) | Wheeler | 1 | 176K | 1.45M | Oct 2012 – Aug 2026 |
| State of Texas -DW- O-10-15057 | Formentera Operations LLC | Dune | Crane | 27 | 172K | 112K | by Jan 1993 – Aug 2026 |
| Roper-STX-Unit O-1-21801 | Formentera Operations LLC | Indio Tanks (Pearsall) | Frio | 1 | 171K | 578K | Oct 2025 – Aug 2026 |
| Tubb, J. B., a/C 1 O-10-15315 | Formentera Operations LLC | Sand Hills (Judkins) | Crane | 72 | 170K | 4.55M | by Jan 1993 – Aug 2026 |
| Calcote 63 G-14-276580 | Formentera Operations LLC | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 170K | 2.94M | Oct 2014 – Aug 2026 |
| Whiting 8 O-10-56872 | Formentera Operations LLC | Keystone (Wolfcamp) | Winkler | 1 | 169K | 116K | Feb 2022 – Aug 2026 |
| Campbell Glo 21 O-10-50803 | Formentera Operations LLC | Keystone (Wolfcamp) | Winkler | 1 | 169K | 607K | Jun 2018 – Aug 2026 |
| University 48 O-10-44102 | Formentera Operations LLC | Block 31 (Devonian) | Crane | 2 | 169K | 481K | Apr 2013 – Aug 2026 |
| Couch, Clara -B- O-9-325 | Formentera Operations LLC | Clara Couch | Crockett | 5 | 168K | 21 | by Jan 1993 – Aug 2026 |
| Keystone Cattle Company O-10-27106 | Formentera Operations LLC | Keystone (Colby) | Winkler | 16 | 165K | 248K | by Jan 1993 – Nov 2024 |
| J. B. Tubb a/C 1 TR A O-10-58609 | Formentera Operations LLC | Sand Hills (Wichita Albany, S.) | Crane | 7 | 165K | 1.52M | Sep 2022 – Aug 2026 |
| Stiles 18 G-14-254537 | Formentera Operations LLC | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 164K | 6.4M | Nov 2009 – Aug 2026 |
| Tubb, J. B. -DK- a/C #1 O-10-5269 | Formentera Operations LLC | Sand Hills (McKnight) | Crane | 11 | 161K | 989K | by Jan 1993 – Aug 2026 |
| Lea, P.J. "B" O-10-37890 | Formentera Operations LLC | Lea (Penn. Detrital) | Crane | 2 | 161K | 249K | Oct 2005 – Aug 2026 |
| Laney O-11-62773 | Formentera Operations LLC | Levelland | Cochran | 4 | 157K | 6.67K | by Jan 1993 – Aug 2026 |
| Hooey-STX-Unit O-1-21886 | Formentera Operations LLC | Indio Tanks (Pearsall) | Frio | 1 | 154K | 463K | Aug 2025 – Aug 2026 |
| King 27 O-10-43874 | Formentera Operations LLC | McElroy | Crane | 5 | 153K | 697K | Apr 2013 – Aug 2026 |
| Stonegate 14 O-10-49281 | Formentera Operations LLC | Keystone (Wolfcamp) | Winkler | 1 | 152K | 214K | Jun 2017 – Aug 2026 |
| University Lands 42 O-10-41523 | Formentera Operations LLC | Dune | Crane | 2 | 152K | 298K | May 2011 – Mar 2026 |
| University -M- O-10-20693 | Formentera Operations LLC | McElroy | Crane | 13 | 151K | 6.8K | by Jan 1993 – Aug 2026 |
| White, E. C. O-11-66487 | Formentera Operations LLC | Levelland | Hockley | 6 | 150K | 22.5K | by Jan 1993 – Aug 2026 |
| Mrs. T. B. Roberts R/a -A- O-10-29630 | Formentera Operations LLC | Fasken (Penn.) | Ector | 2 | 149K | 1.21M | by Jan 1993 – Aug 2026 |
| Stiles 68 G-14-276227 | Formentera Operations LLC | Mills Ranch (Granite Wash Cons.) | Wheeler | 1 | 144K | 1.32M | Aug 2013 – Aug 2026 |
| Votaw Unit O-1-19102 | Formentera Operations LLC | Briscoe Ranch (Eagleford) | Dimmit | 2 | 142K | 643K | Jan 2017 – Aug 2026 |
| TXL O-10-846 | Formentera Operations LLC | Cowden, North (Deep) | Ector | 6 | 141K | 241K | by Jan 1993 – Oct 2019 |
| Cummins, H. E. -A- O-10-35910 | Formentera Operations LLC | Goldsmith (Clear Fork) | Ector | 4 | 140K | 652K | May 1998 – Aug 2026 |
| Lea, P.J. O-10-28523 | Formentera Operations LLC | Sand Hills (San Angelo, Upper) | Crane | 11 | 139K | 429K | by Jan 1993 – Aug 2026 |
| Darlene 1-STX O-1-21467 | Formentera Operations LLC | Indio Tanks (Pearsall) | Frio | 1 | 137K | 708K | Jan 2025 – Aug 2026 |
| Hurrikain Cat I-STX O-1-21690 | Formentera Operations LLC | Indio Tanks (Pearsall) | Frio | 1 | 134K | 828K | Jan 2025 – Aug 2026 |
| Stiles 16A O-14-9017 | Formentera Operations LLC | Mills Ranch (Granite Wash Cons.) | Wheeler | 1 | 134K | 1.03M | Dec 2013 – Aug 2026 |
| University 25A O-10-28173 | Formentera Operations LLC | Block 31 (Devonian) | Crane | 3 | 133K | 1.14M | by Jan 1993 – Aug 2026 |
| Slator -B- O-10-6972 | Formentera Operations LLC | TXL (Ellenburger) | Ector | 2 | 130K | 432K | by Jan 1993 – Aug 2026 |
| Tyler 55 G-14-265281 | Formentera Operations LLC | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 130K | 4.4M | Oct 2011 – Aug 2026 |
| Barrow, Augusta O-10-45396 | Formentera Operations LLC | Lowe (Atoka) | Ector | 4 | 130K | 346K | Nov 2013 – Aug 2026 |
| Sendero-STX-Unit O-1-21843 | Formentera Operations LLC | Indio Tanks (Pearsall) | Frio | 1 | 128K | 560K | Aug 2025 – Aug 2026 |
| Tercero O-10-59064 | Formentera Operations LLC | Keystone (Wolfcamp) | Winkler | 1 | 128K | 132K | Dec 2022 – Aug 2026 |
| Tyler 55 G-14-265708 | Formentera Operations LLC | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 127K | 4.16M | May 2012 – Aug 2026 |
| Stiles 18A O-14-9024 | Formentera Operations LLC | Mills Ranch (Granite Wash Cons.) | Wheeler | 1 | 127K | 473K | Sep 2013 – Aug 2026 |
| Stiles 68 G-14-276557 | Formentera Operations LLC | Mills Ranch (Granite Wash Cons.) | Wheeler | 1 | 127K | 1.1M | Jul 2014 – Aug 2026 |
| Petsch O-10-6961 | Formentera Operations LLC | TXL (Ellenburger) | Ector | 1 | 125K | 319K | by Jan 1993 – Apr 2026 |
| Stiles 4 G-14-259515 | Formentera Operations LLC | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 125K | 3.3M | Jun 2010 – Aug 2026 |
| Bartz 19 G-14-259514 | Formentera Operations LLC | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 123K | 5.74M | Jun 2010 – Aug 2026 |
| Stiles 24 G-14-265693 | Formentera Operations LLC | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 121K | 4.15M | Mar 2012 – Aug 2026 |
| Bartz 19 G-14-268691 | Formentera Operations LLC | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 120K | 4.72M | Jan 2013 – Aug 2026 |
| Stiles 4 G-14-274539 | Formentera Operations LLC | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 120K | 2.94M | Dec 2013 – Aug 2026 |
| Bartz 19 G-14-265785 | Formentera Operations LLC | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 119K | 4.94M | Aug 2012 – Aug 2026 |