| Keystone Cattle Co. O-10-51483 | BCP Resources, LLC only | Keystone (Dev-McKee Cons) | Winkler | 2 | 117K | 158K | Mar 2019 – Apr 2026 |
| Keystone Silurian Unit O-10-51896 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 27 | 71.9K | 62.7K | Mar 2019 – Apr 2026 |
| Jenkins, Ben Etal -A- O-10-51572 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 3 | 47.9K | 71.2K | Mar 2019 – Apr 2026 |
| Bashara, M.J. O-10-52034 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 8 | 27.7K | 91.9K | Mar 2019 – Apr 2026 |
| Jenkins, B.F. O-10-51477 | Formentera Operations LLC only | Keystone (Dev-McKee Cons) | Winkler | 4 | 27.7K | 67.6K | Mar 2019 – Apr 2026 |
| Bashara, M. J., -B- O-10-51575 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 2 | 25.2K | 41.4K | Mar 2019 – Apr 2026 |
| Bashara, M. J. -C- G-10-20394 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 1 | 24.7K | 1.08M | Jan 1993 – Jun 2025 |
| Bashara, M. J. -E- O-10-52086 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 1 | 9.03K | 12.1K | Mar 2019 – Apr 2026 |
| Walton, J. B. G-10-136134 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 1 | 8.84K | 1.85M | Jan 1993 – Apr 2026 |
| Jenkins O-10-51482 | Fulfer Oil and Cattle Co. only | Keystone (Dev-McKee Cons) | Winkler | 5 | 8.57K | 34.7K | Mar 2019 – Apr 2026 |
| Keystone -4- O-10-51484 | BCP Resources, LLC only | Keystone (Dev-McKee Cons) | Winkler | 1 | 6.21K | 20.3K | Mar 2019 – Apr 2026 |
| Walton, J.B. "A" O-10-51576 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 3 | 6.21K | 72.8K | Mar 2019 – Jan 2025 |
| Lavender O-10-51480 | Basin Oil & Gas Operating, LLC only | Keystone (Dev-McKee Cons) | Winkler | 1 | 5.92K | 479 | Mar 2019 – Jul 2025 |
| Walton, J. B. O-10-51895 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 2 | 5.48K | 13.1K | Mar 2019 – Mar 2026 |
| Little-Jenkins O-10-51571 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 1 | 5.12K | 5.93K | Mar 2019 – May 2020 |
| Bashara, M. J. -F- G-10-32683 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 1 | 3.27K | 527K | Jan 1993 – Jun 2025 |
| Jenkins, B.F., Etal O-10-51574 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 4 | 2.86K | 7.53K | Mar 2019 – Jul 2022 |
| Bashara, M. J. -F- G-10-32684 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 1 | 2.47K | 476K | Jan 1993 – Jan 2025 |
| Jenkins, B. F. O-10-51715 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 4 | 2.18K | 11.9K | Mar 2019 – Sep 2020 |
| Jenkins, Ben Etal O-10-51573 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 2 | 776 | 2.22K | Mar 2019 – Mar 2021 |
| Bashara, M. J. -F- G-10-32685 | XTO Energy Inc. only | Keystone (Dev-McKee Cons) | Winkler | 1 | 754 | 92K | Jan 1993 – Nov 1997 |
| Jenkins, Ben, Etal-B- O-10-51714 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 2 | 274 | 2.87K | Mar 2019 – Nov 2025 |
| Keystone-Jenkins O-10-51478 | Walsh & Watts, Inc. only | Keystone (Dev-McKee Cons) | Winkler | 2 | 100 | 3.48K | Mar 2019 – Jun 2021 |
| Jenkins, Ben Etal G-10-290499 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 1 | 1 | 67 | Mar 2021 – Aug 2022 |
| Crum G-10-57115 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 1 | 0 | 0 | — |
| Waddell O-10-51481 | Formentera Operations LLC only | Keystone (Dev-McKee Cons) | Winkler | 5 | 0 | 0 | — |
| Bash G-10-20478 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 1 | 0 | 0 | — |
| McCutchen, W. A. -B- G-10-20462 | Fulfer Oil and Cattle Co. only | Keystone (Dev-McKee Cons) | Winkler | 1 | 0 | 377K | Jan 1993 – Jun 2025 |
| Pure-Walton G-10-20447 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 1 | 0 | 424K | Jan 1993 – Jul 2006 |
| Walton, J. B. G-10-20438 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 1 | 0 | 1.8M | Jan 1993 – Dec 2025 |
| Walton, J. B. G-10-20435 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 1 | 0 | 626K | Jan 1993 – Jun 2025 |
| Walton, J. B. G-10-20434 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 1 | 0 | 1.64M | Jan 1993 – Jun 2025 |
| Keystone Silurian Unit G-10-20430 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 1 | 0 | 3.63M | Jan 1993 – Apr 2026 |
| Jenkins, Ben et al -B- G-10-20428 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 1 | 0 | 774K | Jan 1993 – Aug 2022 |
| Jenkins, B. F. G-10-20426 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 1 | 0 | 348K | Jan 1993 – Aug 2019 |
| Crum O-10-51713 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 1 | 0 | 0 | — |
| Jenkins, B. F. G-10-20425 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 1 | 0 | 504K | Jan 1993 – Nov 2019 |
| Bashara, M. J. -C- G-10-20423 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 1 | 0 | 50.2K | Jan 1993 – Aug 1998 |
| Bash G-10-20410 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 1 | 0 | 0 | — |
| Walton, J. B. G-10-20407 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 1 | 0 | 47.6K | Jan 1993 – Nov 1993 |
| Walton, J. B. G-10-20395 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 1 | 0 | 1.87M | Jan 1993 – Dec 2025 |
| Keystone Cattle Co. A O-10-63691 | BCP Resources, LLC only | Keystone (Dev-McKee Cons) | Winkler | 1 | 0 | 0 | — |
| Walton, J.B. "A" G-10-299073 | Hilcorp Energy Company only | Keystone (Dev-McKee Cons) | Winkler | 1 | 0 | 0 | — |
| Keystone Cattle Company G-10-265112 | Basin Oil & Gas Operating, LLC only | Keystone (Dev-McKee Cons) | Winkler | 1 | 0 | 36.2K | Dec 2019 – Nov 2025 |