| North Cowden Unit O-10-20164 | Occidental Permian Ltd. only | Cowden, North | Ector | 1,651 | 99.7M | 44.2M | Jan 1993 – Apr 2026 |
| North McElroy Unit O-10-20377 | Kinder Morgan Production Co LLC only | McElroy | Crane | 1,177 | 31.8M | 5.91M | Jan 1993 – Apr 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 – Apr 2026 |
| Prentice Northeast Unit O-11-18607 | Highmark Energy Operating, LLC only | Prentice (6700) | Terry | 621 | 27.6M | 6.52M | Jan 1993 – Apr 2026 |
| North Riley Unit O-11-61559 | Bce-Mach III LLC only | Riley, North | Gaines | 404 | 27.3M | 15.7M | Jan 1993 – Apr 2026 |
| Hutchings Stock Assn. O-10-7337 | Two P Partners, LLC only | Ward-Estes, North | Ward | 1,671 | 26.8M | 20.2M | Jan 1993 – Apr 2026 |
| North Westbrook Unit O-10-20831 | Bce-Mach III LLC only | Westbrook | Mitchell | 1,146 | 26.2M | 1.81M | Jan 1993 – Apr 2026 |
| North Central Levelland Unit O-11-60557 | Hilcorp Energy Company only | Levelland | Hockley | 565 | 25.9M | 5.73M | Jan 1993 – Apr 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 – Apr 2026 |
| Wasson North Clearfork Unit O-11-62689 | Occidental Permian Ltd. only | Wasson, NE. (Clear Fork) | Yoakum | 193 | 15M | 4.41M | Jan 1993 – Apr 2026 |
| TXL North Unit O-10-20487 | Formentera Operations LLC only | TXL (Tubb) | Ector | 496 | 13.9M | 40.3M | Jan 1993 – Apr 2026 |
| North Dollarhide Unit O-10-11267 | OXY USA WTP LP only | Dollarhide (Devonian) | Andrews | 108 | 13.1M | 15.3M | Jan 1993 – Apr 2026 |
| North Pembrook Spraberry Unit O-9-3913 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Upton | 380 | 12.9M | 32.5M | Jan 1993 – Apr 2026 |
| Northwest Mallet Unit O-11-18246 | Occidental Permian EOR, LLC only | Slaughter | Hockley | 179 | 12.9M | 6.64M | Jan 1993 – Apr 2026 |
| North Cross /Dev./ Unit O-10-18696 | Occidental Permian Ltd. only | Crossett (Devonian) | Crane | 57 | 12.5M | 128M | Jan 1993 – Apr 2026 |
| East Cowden (Grayburg) Unit O-10-22927 | Basin Oil & Gas Operating, LLC only | Cowden, North | Ector | 92 | 10.4M | 3.6M | Jan 1993 – Apr 2026 |
| Welch North Unit O-11-19573 | White Rock Oil & Gas, LLC only | Welch | Dawson | 293 | 9.43M | 1.77M | Jan 1993 – Apr 2026 |
| Guitar North O-10-48742 | SM Energy Company only | Spraberry (Trend Area) | Howard | 35 | 9.31M | 39.3M | Mar 2017 – Apr 2026 |
| Rhodes Cowden Unit O-10-20538 | OXY USA WTP LP only | Cowden, North | Ector | 170 | 8.15M | 6.14M | Jan 1993 – Apr 2026 |
| SRH North O-9-16968 | Apache Corporation only | Spraberry (Trend Area) | Reagan | 137 | 7.83M | 81.4M | Feb 2009 – Apr 2026 |
| North Penwell Unit O-10-21556 | Ring Energy, Inc. only | Penwell | Ector | 282 | 7.31M | 4.24M | Jan 1993 – Apr 2026 |
| North Dollarhide Unit O-10-32853 | OXY USA WTP LP only | Dollarhide (Clear Fork) | Andrews | 100 | 6.53M | 7.29M | Jan 1993 – Apr 2026 |
| Corrigan Cowden Unit O-10-24118 | OXY USA Inc. only | Cowden, North | Ector | 56 | 6.42M | 1.79M | Jan 1993 – Apr 2026 |
| Traylor North O-1-15412 | Exco Operating Company, LP only | Briscoe Ranch (Eagleford) | Zavala | 28 | 5.09M | 4.07M | Jan 2011 – Apr 2026 |
| Estes, E. W. O-10-7336 | Two P Partners, LLC only | Ward-Estes, North | Ward | 241 | 4.7M | 4.8M | Jan 1993 – Apr 2026 |
| Northeast Scharbauer O-10-50323 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 17 | 4.58M | 8.1M | Feb 2018 – Apr 2026 |
| North Creek B O-9-17677 | Discovery Natural Resources LLC only | Spraberry (Trend Area) | Reagan | 37 | 4.43M | 33.6M | Aug 2011 – Apr 2026 |
| Irvin Minerals North O-1-20765 | XTO Energy Inc. only | Eagleville (Eagle Ford-1) | La Salle | 31 | 3.99M | 4.66M | Feb 2023 – Apr 2026 |
| H & J Unit 1 "D" O-11-5187 | Hilcorp Energy Company only | Russell, North (Devonian) | Gaines | 47 | 3.89M | 850K | Jan 1993 – Apr 2026 |
| Northeast Levelland Unit O-11-61137 | Hilcorp Energy Company only | Levelland | Hockley | 37 | 3.57M | 991K | Jan 1993 – Apr 2026 |
| Holt, O. B. /R/ O-10-797 | Occidental Permian Ltd. only | Cowden, North | Ector | 34 | 3.15M | 1.15M | Jan 1993 – Apr 2026 |
| North Foster Unit O-10-16940 | Aghorn Operating, Inc. only | Foster | Ector | 119 | 3.1M | 1.34M | Jan 1993 – Feb 2026 |
| Cowden, J. M. R/a -B- O-10-835 | Occidental Permian Ltd. only | Cowden, North (Deep) | Ector | 23 | 3.01M | 316K | Jan 1993 – Apr 2026 |
| Holt Ranch North O-10-36524 | Ovintiv USA Inc. only | Spraberry (Trend Area) | Martin | 37 | 2.97M | 9.31M | Dec 2000 – Apr 2026 |
| Jennifer (Queen) Unit O-10-32616 | Richland Resources Corporation only | Concho Bluff, North (Queen) | Ector | 58 | 2.89M | 21 | Jan 1993 – Feb 2026 |
| Upton 'Z' Fee O-10-34334 | Diamondback E&P LLC only | Concho Bluff, North (Queen) | Upton | 28 | 2.8M | 2.8K | Nov 1994 – Apr 2026 |
| North Perryton Unit O-14-3740 | Capturepoint LLC only | Perryton, North (George Morrow) | Ochiltree | 31 | 2.72M | 251K | Jan 1993 – Apr 2026 |
| Northwest Garza Unit O-11-61053 | RJD Management Co., Inc. only | Garza | Garza | 87 | 2.66M | 3.1M | Jan 1993 – Apr 2026 |
| North Levelland Unit O-11-67224 | Bce-Mach III LLC only | Levelland | Hockley | 55 | 2.61M | 704K | Apr 1994 – Apr 2026 |
| Northwest Terry (Abo) Unit O-11-63221 | R3 Operating Corporation only | Kingdom (Abo Reef) | Terry | 46 | 2.53M | 19.8K | Jan 1993 – Apr 2026 |
| H & J Sec. 451 O-11-5182 | Hilcorp Energy Company only | Russell, North (Devonian) | Gaines | 33 | 2.53M | 921K | Jan 1993 – Apr 2026 |
| Holt, O. B. -C- O-10-848 | Texland Petroleum, L.P. only | Cowden, North (Deep) | Ector | 32 | 2.52M | 335K | Jan 1993 – Apr 2026 |
| Yanta North Unit 1 O-2-12155 | Burlington Resources O & G Co LP only | Eagleville (Eagle Ford-2) | Karnes | 8 | 2.41M | 3.88M | May 2019 – Apr 2026 |
| Mabee C North O-10-48137 | Diamondback E&P LLC only | Spraberry (Trend Area) | Martin | 16 | 2.39M | 7.79M | Oct 2016 – Apr 2026 |
| Idalou Unit O-11-65917 | Texland Petroleum, L.P. only | Idalou, North (Clearfork, LO) | Lubbock | 34 | 2.35M | 9.07K | Jan 1993 – Apr 2026 |
| Mzyk North Unit O-2-11611 | Repsol Oil & Gas USA, LLC only | Eagleville (Eagle Ford-2) | Karnes | 7 | 2.2M | 3.51M | May 2017 – Apr 2026 |
| Holt, O. B. O-10-23396 | Texland Petroleum, L.P. only | Cowden, North | Ector | 134 | 2.08M | 705K | Jan 1993 – Apr 2026 |
| Christine (Spraberry) Unit O-11-66847 | Hibernia Resources IV, LLC only | Ackerly, North Spraberry | Dawson | 30 | 2.07M | 333K | Jan 1993 – Apr 2026 |
| Yanta North O-2-9679 | Burlington Resources O & G Co LP only | Eagleville (Eagle Ford-2) | Karnes | 11 | 2.04M | 2.89M | Jul 2011 – Apr 2019 |
| Northeast Fuhrman-Mascho Unit O-10-22442 | Bce-Mach III LLC only | Fuhrman-Mascho | Andrews | 150 | 2M | 1.29M | Jan 1993 – Apr 2026 |