| Westbrook Southwest Unit O-10-21120 | Grayrock Energy II, LLC only | Westbrook | Mitchell | 371 | 8.69M | 21 | by Jan 1993 – Aug 2026 |
| Kma Waterflood-Southwest Unit O-13-10267 | Stephens & Johnson Operating Co. only | K-M-A | Wichita | 160 | 5.31M | 19 | by Jan 1993 – Aug 2026 |
| Prentice Southwest Unit O-11-60367 | Occidental Permian Ltd. only | Prentice (6700) | Yoakum | 124 | 5.15M | 1.95M | by Jan 1993 – Aug 2026 |
| Blackfoot West Unit O-10-50000 | Diamondback E&P LLC only | Spraberry (Trend Area) | Midland | 11 | 4.56M | 14.6M | Aug 2017 – Aug 2026 |
| Talco West Unit O-6-15028 | J.P. Oil Company, Inc. only | Talco | Franklin | 247 | 4.05M | 0 | Jul 2011 – Jul 2026 |
| Cowden 39-03 West Unit O-10-61552 | XTO Energy Inc. only | Spraberry (Trend Area) | Midland | 9 | 3.48M | 9.52M | Oct 2023 – Aug 2026 |
| Willamar West Unit O-4-3391 | Citation Oil & Gas Corp. only | Willamar, West | Willacy | 207 | 3.04M | 3.18M | by Jan 1993 – Aug 2026 |
| UL Mason West Unit O-10-49200 | Diamondback E&P LLC only | Spraberry (Trend Area) | Andrews | 11 | 3.01M | 2.91M | Jul 2017 – Aug 2026 |
| Wellman West Unit O-11-64619 | White Rock Oil & Gas, LLC only | Wellman, W. (San Andres) | Terry | 45 | 2.05M | 461K | by Jan 1993 – Jul 2026 |
| Quito West Unit O-10-32541 | Seaboard Operating Co. only | Quito, West (Delaware) | Ward | 64 | 1.78M | 1.01M | by Jan 1993 – Aug 2026 |
| G-M-K West Unit O-11-68366 | Hilcorp Energy Company only | G-M-K, West (San Andres) | Gaines | 19 | 1.78M | 387K | Dec 2001 – Aug 2026 |
| Tree Frog 47 West Unit O-10-53768 | Diamondback E&P LLC only | Spraberry (Trend Area) | Howard | 5 | 1.66M | 4.7M | Dec 2019 – Aug 2026 |
| Bob Midkiff 37-48 West Unit O-10-57379 | XTO Energy Inc. only | Spraberry (Trend Area) | Midland | 9 | 1.61M | 6.46M | May 2022 – Aug 2026 |
| Scott Sugg West Unit O-9-18614 | Apache Corporation only | Lin (Wolfcamp) | Irion | 12 | 1.36M | 24.5M | Feb 2015 – Aug 2026 |
| Bexar 11-14 West Unit O-10-57344 | Chevron U. S. A. Inc. only | Wolfbone (Trend Area) | Reeves | 7 | 1.34M | 2.53M | Oct 2021 – Aug 2026 |
| Panther West Unit O-10-51470 | Apache Corporation only | Spraberry (Trend Area) | Howard | 7 | 1.28M | 2.56M | Oct 2018 – Aug 2026 |
| Mid-States West Unit 37-5 O-10-52457 | Permian Resources Operating, LLC only | Spraberry (Trend Area) R 40 Exc | Midland | 4 | 1.27M | 5.06M | Sep 2019 – Aug 2026 |
| Heard Bower West Unit O-1-15760 | Marathon Oil EF LLC only | Eagleville (Eagle Ford-1) | Atascosa | 9 | 1.27M | 1.48M | Sep 2011 – Aug 2026 |
| Jesse James 5-4 West Unit O-10-60253 | Permian Resources Operating, LLC only | Phantom (Wolfcamp) | Reeves | 4 | 1.26M | 4.51M | Apr 2023 – Jul 2026 |
| Dove West Unit O-2-9636 | Murphy Expl. & Prod. Co. - USA only | Eagleville (Eagle Ford-2) | Karnes | 6 | 1.25M | 1.95M | Aug 2011 – Aug 2026 |
| Bexar 46-3 West Unit 1 O-10-56008 | Chevron U. S. A. Inc. only | Wolfbone (Trend Area) | Reeves | 3 | 1.21M | 2.48M | Jun 2021 – Aug 2026 |
| Von Roeder West Unit O-11-69186 | Crossroads Operating, LLC only | Von Roeder, W. (Clear Fork) | Borden | 10 | 1.11M | 261K | Dec 2007 – Aug 2026 |
| Wilbanks Allar West Unit O-10-52082 | Diamondback E&P LLC only | Spraberry (Trend Area) | Martin | 4 | 1.08M | 3.7M | Feb 2019 – Aug 2026 |
| Whitfield West Unit O-2-10112 | Murphy Expl. & Prod. Co. - USA only | Eagleville (Eagle Ford-2) | Karnes | 5 | 1.08M | 692K | Apr 2012 – Aug 2026 |
| Walker-Drrc West Unit 30-56 O-10-55549 | Surge Operating, LLC only | Spraberry (Trend Area) | Howard | 3 | 1.02M | 2.16M | Dec 2020 – Aug 2026 |
| Sisti West Unit O-2-10473 | Murphy Expl. & Prod. Co. - USA only | Eagleville (Eagle Ford-2) | Karnes | 3 | 866K | 1.27M | Apr 2013 – Aug 2026 |
| Smith-West Unit O-1-17034 | Marathon Oil EF LLC only | Eagleville (Eagle Ford-1) | McMullen | 6 | 783K | 1.33M | Sep 2013 – Aug 2026 |
| Bexar 46-1 West Unit 2 O-10-56007 | Chevron U. S. A. Inc. only | Wolfbone (Trend Area) | Reeves | 2 | 743K | 1.47M | Jun 2021 – Aug 2026 |
| Talco Central West Unit O-6-15127 | J.P. Oil Company, Inc. only | Talco | Titus | 31 | 678K | 0 | Dec 2012 – Jul 2026 |
| Oldham Trust West Unit 25-41 O-10-59619 | Surge Operating, LLC only | Spraberry (Trend Area) | Howard | 2 | 595K | 1.16M | Oct 2022 – Aug 2026 |
| Clay Creek West Unit O-3-9388 | Aethon Energy Operating LLC only | Clay Creek | Washington | 48 | 586K | 166K | by Jan 1993 – Aug 2026 |
| Pancho West Unit O-1-18968 | Texas American Resources Company only | Eagleville (Eagle Ford-1) | Atascosa | 3 | 562K | 431K | Nov 2016 – Aug 2026 |
| University 9-28 West Unit O-10-48305 | Elevation Resources LLC only | Emma (Devonian) | Andrews | 1 | 532K | 1.09M | Nov 2016 – Jul 2026 |
| Berkley State West Unit O-10-47669 | Halcon Operating Co., Inc. only | Phantom (Wolfcamp) | Pecos | 2 | 466K | 566K | Feb 2016 – Jul 2026 |
| Donna State West Unit O-10-48073 | Halcon Operating Co., Inc. only | Phantom (Wolfcamp) | Pecos | 1 | 465K | 486K | Aug 2016 – Jul 2026 |
| Alba (Subclarksville) West Unit O-6-12693 | HD Operating Co, LLC only | Alba | Wood | 21 | 456K | 21 | by Jan 1993 – Jan 2024 |
| Rule West Unit O-8-28428 | Bridwell Oil Co. only | Rule West (Strawn) | Haskell | 18 | 359K | 0 | Apr 1998 – Aug 2026 |
| Jea West Unit I Las O-1-16759 | Ineos USA Oil & Gas LLC only | Eagleville (Eagle Ford-1) | La Salle | 1 | 349K | 226K | Jun 2013 – Aug 2026 |
| Osprey State West Unit O-10-53913 | Mongoose Energy, LLC only | Hoefs T-K (Wolfcamp) | Pecos | 1 | 321K | 1.11M | Sep 2019 – May 2026 |
| Jea West Unit II Las O-1-16761 | Ineos USA Oil & Gas LLC only | Eagleville (Eagle Ford-1) | La Salle | 1 | 301K | 278K | May 2013 – Aug 2026 |
| Mikulec West Unit O-5-4394 | Wildfire Energy Operating LLC only | Aguila Vado (Eagleford) | Brazos | 1 | 273K | 105K | Oct 2018 – Jul 2026 |
| JO-Mill West Unit O-11-70105 | Estancia Oil & Gas, LLC only | JO-Mill (Spraberry) | Dawson | 12 | 261K | 37.5K | Apr 2014 – Aug 2026 |
| PC West Unit O-1-19221 | Valence Operating Company only | Eagleville (Eagle Ford-1) | Atascosa | 1 | 249K | 144K | Jan 2018 – Aug 2026 |
| Anthony West Unit O-1-16169 | Murphy Expl. & Prod. Co. - USA only | Eagleville (Eagle Ford-1) | Atascosa | 1 | 233K | 197K | Oct 2012 – Aug 2026 |
| Lay West Unit O-1-19180 | Magnolia Oil & Gas Operating LLC only | Eagleville (Eagle Ford-1) | Atascosa | 1 | 232K | 311K | Oct 2017 – Aug 2026 |
| Fargo West Unit O-13-29462 | L7 Energy LLC only | Fargo, NE. (Strawn Conglomerate) | Wilbarger | 20 | 226K | 0 | Feb 1998 – Jun 2026 |
| Ft. Stockton Southwest Unit O-10-20139 | WPX Energy Permian, LLC only | Fort Stockton | Pecos | 40 | 197K | 41.2K | by Jan 1993 – Apr 2018 |
| Gorgon West Unit 57-1-33-28 O-10-59852 | Anadarko E&P Onshore LLC only | Phantom (Wolfcamp) | Reeves | 1 | 196K | 602K | Jun 2023 – May 2024 |
| Rainbank West Unit O-2-9629 | EOG Resources, Inc. only | Eagleville (Eagle Ford-2) | Karnes | 2 | 177K | 253K | Mar 2011 – Oct 2024 |
| Mikulec West Unit O-3-27212 | Wildfire Energy Operating LLC only | Madisonville, W. (Woodbine -A-) | Brazos | 2 | 171K | 38.7K | Apr 2016 – Jul 2026 |