| Keystone Holt Unit O-10-20730 | Bopco, L.P. only | Keystone (Holt) | Winkler | 164 | 6.49M | 13.6M | Jan 1993 – Aug 2015 |
| COP O-10-56269 | Boyd & McWilliams Operating, LLC only | Keystone (Wolfcamp) | Winkler | 12 | 3.43M | 3.3M | Nov 2020 – Apr 2026 |
| Keystone O-10-45515 | COG Operating LLC only | Spraberry (Trend Area) | Midland | 9 | 3.37M | 4.57M | Apr 2014 – Apr 2026 |
| Campbell, Seth O-10-47618 | Hilcorp Energy Company only | Keystone (Consolidated) | Winkler | 78 | 2.81M | 11.6M | Sep 2015 – Apr 2026 |
| Stone Cold 11-2 Unit 2 O-10-60728 | Diamondback E&P LLC only | Spraberry (Trend Area) | Midland | 16 | 2.58M | 4.97M | May 2025 – Apr 2026 |
| Keystone Holt Unit O-10-47085 | Basin Oil & Gas Operating, LLC only | Keystone (Consolidated) | Winkler | 140 | 2.25M | 2.68M | Sep 2015 – Apr 2026 |
| Anderson-Stone Dim O-1-15630 | Ineos USA Oil & Gas LLC only | Briscoe Ranch (Eagleford) | Dimmit | 14 | 2.17M | 6.4M | Jul 2012 – Apr 2026 |
| Campbell, Seth O-10-13866 | Apache Corporation only | Keystone (Clear Fork) | Winkler | 67 | 2.16M | 9.47M | Jan 1993 – Aug 2015 |
| Keystone Cattle Co. O-10-3427 | BCP Resources, LLC only | Keystone, South | Winkler | 93 | 1.95M | 8.08M | Jan 1993 – Apr 2026 |
| Yellowstone 2200 Unit O-10-61510 | XTO Energy Inc. only | Spraberry (Trend Area) | Midland | 7 | 1.73M | 1.67M | May 2023 – Apr 2026 |
| South Keystone /Ellen/ Unit O-10-22615 | Basin Oil & Gas Operating, LLC only | Keystone (Ellenburger) | Winkler | 38 | 1.61M | 13.6M | Jan 1993 – Mar 2016 |
| Stone Unit A O-2-9790 | Burlington Resources O & G Co LP only | Eagleville (Eagle Ford-2) | Karnes | 5 | 1.61M | 2.43M | Nov 2011 – Apr 2026 |
| Ally O-10-48672 | Formentera Operations LLC only | Keystone (Wolfcamp) | Winkler | 6 | 1.37M | 1.92M | Nov 2016 – Mar 2026 |
| East Keystone(san a Holt Unit) O-10-36780 | Merit Energy Company only | Keystone (Holt) | Winkler | 81 | 1.29M | 1.81M | Jan 2002 – Aug 2015 |
| Black Stone G O-3-24192 | IV Standard, LLC only | Patricia Ray (1ST Yegua) | Polk | 8 | 1.24M | 432K | May 2002 – Jan 2026 |
| Baird, W. E. O-10-47127 | Basin Oil & Gas Operating, LLC only | Keystone (Consolidated) | Winkler | 81 | 1.23M | 5.3M | Sep 2015 – Apr 2026 |
| Keystone Cattle Company O-10-35757 | BCP Resources, LLC only | Keystone, South (Devonian) | Winkler | 9 | 1.18M | 3.72M | May 1998 – Apr 2026 |
| Blackstone West O-10-49920 | Permian Resources Operating, LLC only | Phantom (Wolfcamp) | Reeves | 4 | 1.16M | 2.23M | Nov 2017 – Apr 2026 |
| Walton, J. B. O-10-3375 | Hilcorp Energy Company only | Keystone (Ellenburger) | Winkler | 22 | 1.13M | 24M | Jan 1993 – Jun 2020 |
| Brown & Thorp Waterflood Unit O-10-32500 | Greenstone Energy, LLC only | Brown & Thorp, East (Tubb) | Pecos | 60 | 1.06M | 59 | Jan 1993 – Mar 2026 |
| Sixteen Stone 416 O-11-70903 | Burk Royalty Co., Ltd. only | Platang (San Andres) | Yoakum | 5 | 1.03M | 2.53M | Mar 2019 – Apr 2026 |
| Schindler O-3-25246 | Horizon Prod. and Operating, LLC only | Riverstone (Yegua EY-1) | Fort Bend | 1 | 977K | 1.31M | Aug 2008 – Mar 2026 |
| Blackstone O-10-49337 | Permian Resources Operating, LLC only | Phantom (Wolfcamp) | Reeves | 4 | 964K | 2.17M | May 2017 – Apr 2026 |
| Stone O-3-1301 | Americo Energy Resources, LLC only | Durkee (Fairbanks Sand) | Harris | 5 | 825K | 1.58M | Jan 1993 – Apr 2026 |
| Graystone Unit 39-26 O-10-62685 | Surge Operating, LLC only | Spraberry (Trend Area) | Howard | 6 | 823K | 1.53M | Nov 2024 – Mar 2026 |
| Whiting 21 O-10-51186 | Formentera Operations LLC only | Keystone (Wolfcamp) | Winkler | 3 | 801K | 1.31M | Sep 2018 – Apr 2026 |
| Walton, J. B. a/C 2 O-10-3287 | Formentera Operations LLC only | Keystone (Colby) | Winkler | 56 | 771K | 747K | Jan 1993 – Apr 2026 |
| Yellowstone 28-4 O-10-53758 | Browning Oil Company, Inc. only | Garden City, S. (Wolfcamp) | Scurry | 1 | 766K | 1.37M | Nov 2019 – Apr 2026 |
| Keystone Cattle Co. O-10-3410 | Whiting Oil and Gas Corporation only | Keystone (Silurian) | Winkler | 2 | 715K | 987K | Jan 1993 – Feb 2019 |
| Grand Clearfork Unit O-10-28312 | Greenstone Energy, LLC only | Brown & Thorp, East (Tubb) | Pecos | 39 | 676K | 19 | Jan 1993 – Feb 2026 |
| Stone, Bertie E. O-8-15758 | Mesa Ridge Holdings LLC only | Coleman County Regular | Coleman | 30 | 675K | 175K | Jan 1993 – Apr 2026 |
| Black Stone 1-12 B O-10-51143 | Blue Arrow Operating, LLC only | Hoefs T-K (Wolfcamp) | Pecos | 1 | 664K | 820K | Sep 2018 – Apr 2026 |
| Lady Stoneheart 38-47 B O-10-61189 | Birch Operations, Inc. only | Spraberry (Trend Area) | Dawson | 1 | 650K | 407K | Jan 2024 – Apr 2026 |
| Walton, J. B., -C- O-10-15164 | Hilcorp Energy Company only | Keystone (San Andres) | Winkler | 13 | 610K | 1.25M | Jan 1993 – Apr 2026 |
| Baird, W. E. O-10-12805 | Devon Energy Production Co, L.P. only | Keystone (Clear Fork) | Winkler | 35 | 577K | 4.09M | Jan 1993 – Aug 2015 |
| Robb-Stone E34A O-10-60654 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 1 | 560K | 624K | Jan 2024 – Apr 2026 |
| Coachwhip 25 O-10-49191 | Formentera Operations LLC only | Keystone (Wolfcamp) | Winkler | 2 | 552K | 652K | Jan 2017 – Apr 2026 |
| Whiting 28 O-10-49192 | Formentera Operations LLC only | Keystone (Wolfcamp) | Winkler | 2 | 547K | 920K | Feb 2017 – Apr 2026 |
| Ally 26 O-10-46953 | Formentera Operations LLC only | Keystone (Wolfcamp) | Winkler | 2 | 545K | 1.47M | Nov 2014 – Apr 2026 |
| University Stonegate O-9-17668 | RRP Operating LLC only | Lin (Wolfcamp) | Crockett | 11 | 543K | 10.1M | Mar 2011 – Apr 2026 |
| UL 19 Stonefly J O-10-63696 | Pdeh LLC only | Two Georges (Bone Spring) | Loving | 1 | 539K | 517K | Dec 2024 – Apr 2026 |
| Lady Stoneheart 38-47 A O-10-61198 | Birch Operations, Inc. only | Spraberry (Trend Area) | Dawson | 1 | 532K | 447K | Jan 2024 – Apr 2026 |
| Yellowstone 28-1 O-10-53671 | Browning Oil Company, Inc. only | Garden City, S. (Wolfcamp) | Scurry | 1 | 527K | 915K | Nov 2019 – Apr 2026 |
| UL 19 Stonefly I O-10-63686 | Pdeh LLC only | Two Georges (Bone Spring) | Loving | 1 | 523K | 658K | Dec 2024 – Apr 2026 |
| Robb-Stone E34C O-10-60655 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 1 | 513K | 552K | Jan 2024 – Apr 2026 |
| Waddell O-10-23120 | Formentera Operations LLC only | Keystone (San Andres) | Winkler | 30 | 502K | 1.14M | Jan 1993 – Apr 2026 |
| Stone-Gist W45C O-10-54200 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Glasscock | 1 | 487K | 593K | Sep 2020 – Apr 2026 |
| Black Stone State 1-12 A O-10-51138 | Blue Arrow Operating, LLC only | Hoefs T-K (Wolfcamp) | Pecos | 1 | 483K | 652K | Sep 2018 – Apr 2026 |
| Dudley 10 O-10-59381 | Boyd & McWilliams Operating, LLC only | Keystone (Wolfcamp) | Winkler | 2 | 480K | 207K | Feb 2023 – Apr 2026 |
| Robb-Stone W34F O-10-59311 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 1 | 472K | 415K | May 2023 – Apr 2026 |