| Denver Unit O-11-18910 | Occidental Permian Ltd. only | Wasson | Yoakum | 2,471 | 352M | 1.17B | Jan 1993 – Jul 2026 |
| Yates Field Unit O-10-24061 | Kinder Morgan Production Co LLC only | Yates | Pecos | 1,725 | 322M | 1.03B | Jan 1993 – Jul 2026 |
| Seminole San Andres Unit O-11-60475 | OXY USA Inc. only | Seminole (San Andres) | Gaines | 710 | 280M | 328M | Jan 1993 – Jul 2026 |
| Sacroc Unit O-11-3137 | Kinder Morgan Production Co LLC only | Kelly-Snyder | Scurry | 2,719 | 272M | 1.05B | Jan 1993 – Jul 2026 |
| Salt Creek Field Unit O-11-5254 | OXY USA WTP LP only | Salt Creek | Kent | 538 | 140M | 284M | Jan 1993 – Jul 2026 |
| Wasson Odc Unit O-11-60000 | Occidental Permian Ltd. only | Wasson | Yoakum | 848 | 117M | 293M | Jan 1993 – Jul 2026 |
| North Cowden Unit O-10-20164 | Occidental Permian Ltd. only | Cowden, North | Ector | 1,651 | 99.7M | 44.2M | Jan 1993 – Jul 2026 |
| Hawkins Field Unit O-6-5743 | Mmgl East Texas II, LLC only | Hawkins | Wood | 885 | 90.3M | 903M | Jan 1993 – Jul 2026 |
| Levelland Unit O-11-3780 | Occidental Permian EOR, LLC only | Levelland | Hockley | 1,212 | 90.1M | 53.9M | Jan 1993 – Jul 2026 |
| Means /San Andres/ Unit O-10-17503 | Hilcorp Energy Company only | Means | Andrews | 1,236 | 89M | 52.4M | Jan 1993 – Jul 2026 |
| McElroy, J. T., Cons. O-10-4161 | Scout Energy Management LLC only | McElroy | Crane | 1,911 | 77.1M | 9.49M | Jan 1993 – Jul 2026 |
| Fullerton Clearfork Unit O-10-1770 | Hilcorp Energy Company only | Fullerton | Andrews | 1,406 | 76.9M | 65.2M | Jan 1993 – Jul 2026 |
| Anton-Irish Clearfork Unit O-11-304 | Occidental Permian Ltd. only | Anton-Irish | Hale | 591 | 66.1M | 34.9M | Jan 1993 – Jul 2026 |
| Willard Unit O-11-19308 | OXY USA WTP LP only | Wasson | Yoakum | 876 | 65.4M | 195M | Jan 1993 – Jul 2026 |
| Cedar Lake Unit O-11-577 | Occidental Permian EOR, LLC only | Cedar Lake | Gaines | 424 | 52.7M | 120M | Jan 1993 – Jul 2026 |
| Sundown Slaughter Unit O-11-67166 | Bce-Mach III LLC only | Slaughter | Hockley | 702 | 51.1M | 30.8M | Dec 1993 – Jul 2026 |
| Slaughter Estate Unit O-11-18105 | Occidental Permian EOR, LLC only | Slaughter | Hockley | 412 | 50.3M | 202M | Jan 1993 – Jul 2026 |
| Bennett Ranch Unit O-11-19151 | Occidental Permian Ltd. only | Wasson | Yoakum | 607 | 50.3M | 51.5M | Jan 1993 – Jul 2026 |
| Cogdell Canyon Reef Unit O-11-8325 | Occidental Permian Ltd. only | Cogdell (Area) | Scurry | 517 | 49.3M | 97.9M | Jan 1993 – Jul 2026 |
| JO-Mill Unit O-11-60465 | JO Mill Oil Company LLC only | JO-Mill (Spraberry) | Borden | 487 | 46.1M | 22.1M | Jan 1993 – Jul 2026 |
| South Cross Unit O-10-21736 | Occidental Permian Ltd. only | Crossett, S. (Detrital) | Crockett | 195 | 45.3M | 20.3M | Jan 1993 – Jul 2026 |
| West Hasting Unit O-3-19054 | Denbury Onshore, LLC only | Hastings, West | Brazoria | 566 | 45M | 14.1M | Jan 1993 – Jul 2026 |
| XBC Giddings Estate O-9-16349 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Upton | 420 | 43.6M | 150M | Apr 2007 – Jul 2026 |
| Crier-McElroy O-10-4157 | Scout Energy Management LLC only | McElroy | Upton | 739 | 40.9M | 4.29M | Jan 1993 – Jul 2026 |
| Spraberry Driver Unit O-10-15400 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Reagan | 901 | 39.2M | 144M | Jan 1993 – Jul 2026 |
| Texas Ten y PU O-10-46263 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 110 | 39.1M | 115M | Dec 2014 – Jul 2026 |
| South Curtis Ranch O-10-40691 | Occidental Permian Ltd. only | Spraberry (Trend Area) | Martin | 258 | 38.4M | 70.7M | Nov 2010 – Jul 2026 |
| Mabee Unit O-10-4010 | Scout Energy Management LLC only | Mabee | Andrews | 919 | 37.9M | 78M | Jan 1993 – Jul 2026 |
| Central Mallet Unit O-11-18244 | Occidental Permian EOR, LLC only | Slaughter | Hockley | 360 | 36.3M | 105M | Jan 1993 – Jul 2026 |
| Shackelford Spraberry Unit O-10-18187 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 637 | 36.3M | 104M | Jan 1993 – Jul 2026 |
| Goldsmith-Landreth /Deep/ Unit O-10-19815 | Occidental Permian Ltd. only | Goldsmith (Clear Fork) | Ector | 655 | 34.4M | 51.5M | Jan 1993 – Jul 2026 |
| North McElroy Unit O-10-20377 | Kinder Morgan Production Co LLC only | McElroy | Crane | 1,177 | 31.8M | 5.91M | Jan 1993 – Jul 2026 |
| Obrien, G. W., Etal O-10-7338 | Two P Partners, LLC only | Ward-Estes, North | Ward | 2,066 | 31.3M | 30.6M | Jan 1993 – Jul 2026 |
| Middle McCowen O-1-15638 | Marathon Oil EF LLC only | Eagleville (Eagle Ford-1) | Atascosa | 125 | 30.4M | 24.8M | Aug 2011 – Jul 2026 |
| Pegasus Field Unit 3 O-9-17154 | COG Operating LLC only | Pegasus (Consolidated) | Upton | 145 | 30.4M | 143M | May 2010 – Jul 2026 |
| Prentice Northeast Unit O-11-18607 | Highmark Energy Operating, LLC only | Prentice (6700) | Terry | 621 | 27.6M | 6.52M | Jan 1993 – Jul 2026 |
| North Riley Unit O-11-61559 | Bce-Mach III LLC only | Riley, North | Gaines | 404 | 27.3M | 15.7M | Jan 1993 – Jul 2026 |
| Hutchings Stock Assn. O-10-7337 | Two P Partners, LLC only | Ward-Estes, North | Ward | 1,671 | 26.8M | 20.2M | Jan 1993 – Jul 2026 |
| Conroe Field Unit O-3-11659 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 664 | 26.7M | 61.4M | Jan 1993 – Jul 2026 |
| Midland Farms Unit O-10-15874 | Occidental Permian Ltd. only | Midland Farms | Andrews | 654 | 26.7M | 9.53M | Jan 1993 – Jul 2026 |
| Ruckman Ranch Unit O-2-9731 | Burlington Resources O & G Co LP only | Eagleville (Eagle Ford-2) | DE Witt | 62 | 26.4M | 47.8M | Mar 2011 – Jul 2026 |
| Wasson South Clearfork Unit O-11-62865 | Occidental Permian Ltd. only | Wasson 72 | Gaines | 255 | 26.3M | 32.3M | Jan 1993 – Jul 2026 |
| Webster Field Unit O-3-10496 | P.o.&g. Operating, LLC only | Webster | Harris | 385 | 26.2M | 262M | Jan 1993 – Jul 2026 |
| North Westbrook Unit O-10-20831 | Bce-Mach III LLC only | Westbrook | Mitchell | 1,146 | 26.2M | 1.81M | Jan 1993 – Jul 2026 |
| Soa Scharbauer SE O-10-43735 | Chevron U. S. A. Inc. only | Parks (Consolidated) | Midland | 110 | 26M | 59.8M | Feb 2013 – Jul 2026 |
| North Central Levelland Unit O-11-60557 | Hilcorp Energy Company only | Levelland | Hockley | 565 | 25.9M | 5.73M | Jan 1993 – Jul 2026 |
| North Robertson Unit O-11-65930 | Bce-Mach III LLC only | Robertson, N. (Clear Fork 7100) | Gaines | 562 | 25.7M | 12.1M | Jan 1993 – Jul 2026 |
| Mallet Unit O-11-18149 | Hilcorp Energy Company only | Slaughter | Hockley | 352 | 25M | 40.1M | Jan 1993 – Jul 2026 |
| Southeast Levelland Unit O-11-18515 | Occidental Permian EOR, LLC only | Levelland | Hockley | 385 | 24.3M | 13.8M | Jan 1993 – Jul 2026 |
| Scharbauer Ranch O-10-37534 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 185 | 23.7M | 39.5M | May 2005 – Jul 2026 |