| Block 31 Unit O-10-442 | OXY USA EOR, LLC only | Block 31 (Devonian) | Crane | 330 | 15.2M | 971M | by Jan 1993 – Apr 2026 |
| CMC Snapdragon 19-31 Unit O-10-59379 | Chevron U. S. A. Inc. only | Spraberry (Trend Area) | Midland | 14 | 2.9M | 9.02M | Sep 2023 – Mar 2026 |
| Gaddie 1-31 Unit O-10-45936 | Anadarko E&P Onshore LLC only | Phantom (Wolfcamp) | Ward | 3 | 846K | 1.61M | Sep 2014 – Apr 2026 |
| Block 31 Unit O-10-51135 | Hilcorp Energy Company only | Block 31 (Penn. 7620) | Crane | 28 | 562K | 2.82M | Jan 2018 – Apr 2026 |
| Camp 29-31 Unit O-10-47275 | Anadarko E&P Onshore LLC only | Phantom (Wolfcamp) | Loving | 1 | 532K | 840K | Jan 2016 – Apr 2026 |
| Block 31 Unit O-10-445 | Hilcorp Energy Company only | Block 31 (Ellenburger) | Crane | 9 | 477K | 589K | by Jan 1993 – Apr 2026 |
| Rio Comal 26-31 Unit 2 O-10-54656 | Diamondback E&P LLC only | Spraberry (Trend Area) | Midland | 1 | 432K | 867K | Nov 2020 – Apr 2026 |
| Block 31 Unit O-10-36151 | OXY USA Inc. only | Block 31 (Atoka 7900) | Crane | 10 | 339K | 2.33M | Sep 1999 – Mar 2019 |
| Phoenix 56-2-31 Unit G-10-283364 | Anadarko E&P Onshore LLC only | Phantom (Wolfcamp) | Reeves | 1 | 302K | 1.26M | Jan 2018 – Apr 2026 |
| Weatherby 3231 Unit A O-9-20234 | Apache Corporation only | Spraberry (Trend Area) R 40 Exc | Reagan | 1 | 177K | 724K | Nov 2018 – Apr 2026 |
| Rogers Dentonio 31 Unit G-1-278516 | Javelin Energy Partners Mgmt LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 141K | 542K | Nov 2017 – Apr 2026 |
| Gaddie 1-31 Unit O-10-49597 | Anadarko E&P Onshore LLC only | Sandbar (Bone Spring) | Ward | 1 | 136K | 420K | Mar 2016 – Apr 2026 |
| Rogers Dentonio 31 Unit G-1-278451 | Javelin Energy Partners Mgmt LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 134K | 748K | Mar 2016 – Feb 2026 |
| Riviera 43-31 Unit O-10-64713 | Pbex-MCM Operating, LLC only | Spraberry (Trend Area) | Dawson | 2 | 130K | 30.6K | Oct 2025 – Apr 2026 |
| Rogers Dentonio 31 Unit G-1-277932 | Javelin Energy Partners Mgmt LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 127K | 552K | Dec 2017 – Apr 2026 |
| Rogers Dentonio 31 Unit G-1-278130 | Javelin Energy Partners Mgmt LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 122K | 535K | Aug 2017 – Apr 2026 |
| Rogers Dentonio 31 Unit G-1-278009 | Javelin Energy Partners Mgmt LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 120K | 638K | Mar 2016 – Feb 2026 |
| Rogers Dentonio 31 Unit G-1-278129 | Javelin Energy Partners Mgmt LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 109K | 494K | Mar 2016 – Feb 2026 |
| Rogers Dentonio 31 Unit O-1-19318 | Javelin Energy Partners Mgmt LLC only | Briscoe Ranch (Eagleford) | Dimmit | 4 | 108K | 845K | Nov 2017 – Apr 2026 |
| Rogers Dentonio 31 Unit G-1-277930 | Javelin Energy Partners Mgmt LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 102K | 485K | Dec 2017 – Apr 2026 |
| Rogers Dentonio 31 Unit G-1-278181 | Javelin Energy Partners Mgmt LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 102K | 558K | Mar 2016 – Feb 2026 |
| Rogers Dentonio 31 Unit G-1-278641 | Javelin Energy Partners Mgmt LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 94.9K | 405K | Mar 2016 – Apr 2026 |
| Block 31 Unit O-10-9684 | Hilcorp Energy Company only | Block 31 (Grayburg) | Crane | 29 | 93.7K | 8.31K | by Jan 1993 – Jul 2016 |
| Rogers Dentonio 31 Unit G-1-277922 | Javelin Energy Partners Mgmt LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 80K | 375K | Mar 2016 – Apr 2026 |
| Rogers Dentonio 31 Unit G-1-277923 | Javelin Energy Partners Mgmt LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 72K | 384K | Dec 2017 – Apr 2026 |
| Block 31 Unit O-10-38509 | OXY USA Inc. only | Block 31 (Atoka 7600) | Crane | 2 | 57.1K | 90.9K | Oct 2007 – Aug 2019 |
| Layden 31 Unit O-10-47371 | Jetta Operating Company, Inc. only | Collie (Delaware) | Reeves | 1 | 40K | 99.6K | Nov 2015 – Jul 2025 |
| Block 31 Unit O-10-36362 | Hilcorp Energy Company only | Block 31 (Fusselman) | Crane | 2 | 35.6K | 106K | Jul 1999 – Aug 2007 |
| Power Bar University 30-31 Unit O-10-45075 | Apache Corporation only | Three Bar (Wichita) | Andrews | 2 | 28.6K | 4.88K | Sep 2013 – Jun 2020 |
| Block 31 Unit G-10-203839 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 21.5K | 3.22M | May 2004 – Apr 2026 |
| Block 31 Unit G-10-226603 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 16.2K | 4.9M | Jul 2006 – Apr 2026 |
| Block 31 Unit G-10-203826 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 16.1K | 5.02M | Feb 2004 – Apr 2026 |
| Block 31 Unit G-10-203827 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 15.5K | 1.72M | Mar 2004 – Apr 2026 |
| Block 31 Unit G-10-279501 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 15K | 1.94M | Oct 2015 – Apr 2026 |
| Block 31 Unit G-10-279532 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 13.7K | 4.14M | Oct 2015 – Apr 2026 |
| Block 31 Unit G-10-240433 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 13.5K | 7.81M | Aug 2007 – Mar 2026 |
| Block 31 Unit G-10-224150 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 13.3K | 1.79M | Nov 2005 – Apr 2026 |
| Block 31 Unit G-10-279533 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 10.5K | 2.68M | Oct 2015 – Apr 2026 |
| Block 31 Unit O-10-21639 | Hilcorp Energy Company only | Block 31, East (Atoka) | Crane | 8 | 10.2K | 96.9K | Jun 1996 – May 2006 |
| Block 31 Unit O-10-34383 | OXY USA Inc. only | Block 31 (Waddell) | Crane | 2 | 9.89K | 281 | Dec 1994 – Jan 1998 |
| Block 31 Unit G-10-218737 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 7.95K | 3.08M | Nov 2010 – Apr 2026 |
| Block 31 Unit G-10-257316 | Hilcorp Energy Company only | Block 31 (Penn. 7620) | Crane | 1 | 7.6K | 648K | Apr 2010 – Apr 2026 |
| Block 31 Unit G-10-279628 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 5.26K | 1.08M | Oct 2015 – Apr 2026 |
| Block 31 Unit G-10-279799 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 4.61K | 1.37M | Aug 2015 – Apr 2026 |
| Block 31 Unit G-10-287037 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 4.42K | 212K | May 2019 – Oct 2024 |
| Block 31 Unit G-10-279572 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 3.88K | 2.01M | Aug 2015 – Apr 2026 |
| Block 31 Unit G-10-279798 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 3.72K | 2.58M | Aug 2015 – Apr 2026 |
| Block 31 Unit G-10-279504 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 3.54K | 634K | Oct 2015 – Apr 2026 |
| Block 31 Unit G-10-279500 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 3.29K | 1.22M | Oct 2015 – Apr 2026 |
| Block 31 Unit G-10-287136 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 3.2K | 2.43M | Mar 2019 – Feb 2026 |