| Preston Spraberry Unit O-10-18551 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 391 | 17.9M | 54.6M | by Jan 1993 – Jul 2026 |
| Preston 5 O-10-47241 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) R 40 Exc | Midland | 29 | 6.95M | 44.1M | Nov 2015 – Aug 2026 |
| Preston B O-10-47855 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) R 40 Exc | Midland | 13 | 3.87M | 23.6M | Dec 2015 – Aug 2026 |
| Preston A O-10-46162 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) R 40 Exc | Midland | 14 | 2.95M | 16.7M | Dec 2014 – Aug 2026 |
| Preston a Unit O-1-16436 | EOG Resources, Inc. only | Eagleville (Eagle Ford-1) | Gonzales | 7 | 1.85M | 3.93M | Dec 2012 – Aug 2026 |
| J.M. Preston Unit O-1-16991 | EOG Resources, Inc. only | Eagleville (Eagle Ford-1) | Gonzales | 6 | 1.54M | 2.6M | Apr 2013 – Aug 2026 |
| Preston E13A O-10-51399 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) R 40 Exc | Midland | 2 | 728K | 2.97M | Nov 2018 – Aug 2026 |
| Preston E13C O-10-51253 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) R 40 Exc | Midland | 2 | 684K | 2.96M | Nov 2018 – Aug 2026 |
| Preston 9G O-10-57581 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 662K | 1.76M | Jul 2022 – Aug 2026 |
| Hudgins, John O-13-29593 | Tatanka Operating, LLC only | Preston (Davis, Lower) | Grayson | 4 | 634K | 4.71M | Jul 1998 – Aug 2026 |
| Preston-Freeman 15C O-10-58497 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 563K | 1.5M | Feb 2023 – Aug 2026 |
| Preston-Shackelford 15E O-10-60382 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 558K | 1.28M | Feb 2024 – Aug 2026 |
| Preston E13B O-10-51241 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) R 40 Exc | Midland | 2 | 541K | 2.71M | Nov 2018 – Aug 2026 |
| Preston 9C O-10-57640 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 523K | 1.94M | Jun 2022 – Aug 2026 |
| Barnhart (Ef)-J.M. Preston SA5 O-1-21225 | Ensign Natural Resources II LLC only | Eagleville (Eagle Ford-1) | Gonzales | 1 | 510K | 331K | Oct 2023 – Aug 2026 |
| Preston 9H O-10-57471 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 509K | 1.52M | Jul 2022 – Aug 2026 |
| Preston 9L O-10-57550 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 2 | 495K | 2.11M | Jul 2022 – Aug 2026 |
| Preston-Shackelford 15B O-10-60450 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 490K | 1.16M | Feb 2024 – Aug 2026 |
| Preston-Freeman 15E O-10-58476 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 482K | 1.39M | Feb 2023 – Aug 2026 |
| Preston 18L O-10-50317 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) R 40 Exc | Midland | 1 | 481K | 1.63M | Feb 2018 – Aug 2026 |
| Preston-Shackelford 15A O-10-60511 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 480K | 1.16M | Feb 2024 – Aug 2026 |
| Preston E17C O-10-56350 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) R 40 Exc | Midland | 1 | 473K | 1.29M | Sep 2021 – Aug 2026 |
| Preston 9B O-10-57499 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 473K | 1.4M | Jun 2022 – Aug 2026 |
| Preston W17B O-10-56093 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) R 40 Exc | Midland | 1 | 471K | 1.95M | Aug 2021 – Aug 2026 |
| Preston 9A O-10-57599 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 462K | 1.09M | Jun 2022 – Aug 2026 |
| Preston-Shackelford 15J O-10-60512 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 454K | 1.19M | Feb 2024 – Aug 2026 |
| Preston-Freeman 15G O-10-58286 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 447K | 1.23M | Feb 2023 – Aug 2026 |
| Preston-Shackelford 15K O-10-60633 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 445K | 1.01M | Feb 2024 – Aug 2026 |
| Preston E17B O-10-56304 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) R 40 Exc | Midland | 1 | 438K | 1.73M | Sep 2021 – Aug 2026 |
| Preston 9I O-10-57538 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 435K | 1.71M | Jul 2022 – Aug 2026 |
| Preston W17C O-10-56172 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 428K | 1.39M | Aug 2021 – Aug 2026 |
| Preston-Freeman 15I O-10-58463 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 428K | 1.1M | Feb 2023 – Aug 2026 |
| Preston E17A O-10-56196 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) R 40 Exc | Midland | 1 | 428K | 1.42M | Sep 2021 – Aug 2026 |
| Preston 18H O-10-50180 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) R 40 Exc | Midland | 1 | 419K | 2.37M | Feb 2018 – Aug 2026 |
| Preston 18A O-10-48917 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) R 40 Exc | Midland | 1 | 410K | 2.27M | Jun 2017 – Aug 2026 |
| Preston 18F O-10-48823 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) R 40 Exc | Midland | 1 | 408K | 2.03M | Jun 2017 – Aug 2026 |
| Preston E13I O-10-52476 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) R 40 Exc | Midland | 1 | 402K | 1.88M | May 2019 – Aug 2026 |
| Barnhart (Ef)-J.M. Preston SA2 O-2-12713 | Ensign Natural Resources II LLC only | Eagleville (Eagle Ford-2) | Gonzales | 1 | 397K | 279K | Oct 2023 – Aug 2026 |
| Preston E17F O-10-56173 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 395K | 1.87M | Sep 2021 – Aug 2026 |
| Preston 18J O-10-50182 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) R 40 Exc | Midland | 1 | 394K | 1.72M | Feb 2018 – Aug 2026 |
| Preston E13G O-10-52227 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) R 40 Exc | Midland | 1 | 391K | 2.2M | May 2019 – Aug 2026 |
| Preston-Shackelford 15G O-10-60578 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 391K | 845K | Feb 2024 – Aug 2026 |
| Preston 18I O-10-50181 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) R 40 Exc | Midland | 1 | 390K | 2.26M | Feb 2018 – Aug 2026 |
| Preston S31M O-10-56076 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 387K | 1.49M | Oct 2021 – Aug 2026 |
| Preston E13H O-10-52272 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) R 40 Exc | Midland | 1 | 374K | 1.69M | May 2019 – Aug 2026 |
| Preston W17A O-10-56016 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) R 40 Exc | Midland | 1 | 372K | 1.86M | Aug 2021 – Aug 2026 |
| Preston 18K O-10-50215 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) R 40 Exc | Midland | 1 | 369K | 2.29M | Feb 2018 – Aug 2026 |
| Barnhart (Ef)-J.M. Preston SA4 O-1-21224 | Ensign Natural Resources II LLC only | Eagleville (Eagle Ford-1) | Gonzales | 1 | 368K | 243K | Oct 2023 – Aug 2026 |
| Preston-Freeman 15A O-10-58424 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 368K | 761K | Feb 2023 – Aug 2026 |
| Preston W13I O-10-52182 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) R 40 Exc | Midland | 1 | 366K | 1.77M | May 2019 – Aug 2026 |