| Erwin-Todd 39F O-10-61875 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 590K | 643K | Aug 2024 – Jul 2026 |
| Erwin-Murray 45F O-10-58275 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 567K | 646K | Jul 2022 – Jul 2026 |
| Erwin-Murray 45G O-10-58090 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 501K | 646K | May 2022 – Jul 2026 |
| Donelson-Erwin 10A O-10-57569 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 499K | 640K | Feb 2022 – Jul 2026 |
| Donelson-Erwin 10H O-10-57487 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Glasscock | 1 | 482K | 573K | May 2022 – Jul 2026 |
| Erwin-Murray 45H O-10-58109 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 465K | 536K | Jun 2022 – Jul 2026 |
| Erwin-Todd 39D O-10-61874 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 453K | 486K | Aug 2024 – Jul 2026 |
| Erwin-Murray 45C O-10-58477 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 444K | 661K | Jul 2022 – Jul 2026 |
| Erwin-Murray 45D O-10-58232 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 439K | 480K | Jun 2022 – Jul 2026 |
| Erwin-Murray 45A O-10-58067 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 420K | 676K | May 2022 – Jul 2026 |
| Erwin-Todd 39A O-10-61872 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 419K | 408K | Jul 2024 – Jul 2026 |
| Erwin-Murray 45J O-10-58036 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 399K | 631K | May 2022 – Jul 2026 |
| Erwin -G- O-10-22421 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 10 | 369K | 511K | Jan 1993 – Jul 2026 |
| Erwin-Murray 45E O-10-58229 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 356K | 688K | Oct 2022 – Jul 2026 |
| Donelson-Erwin 10C O-10-57484 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 356K | 564K | May 2022 – Jul 2026 |
| Donelson-Erwin 10F O-10-57511 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Glasscock | 1 | 320K | 457K | Feb 2022 – Jul 2026 |
| Fischer-Erwin 10F O-10-63642 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 315K | 266K | Feb 2025 – Jul 2026 |
| Donelson-Erwin 10D O-10-57570 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Glasscock | 1 | 315K | 391K | Feb 2022 – Jul 2026 |
| Erwin-Beth 38C O-10-62248 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 307K | 524K | Jun 2024 – Jul 2026 |
| Erwin-Todd 39G O-10-61876 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 306K | 327K | Aug 2024 – Jul 2026 |
| Fischer-Erwin 10K O-10-63634 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 292K | 240K | Feb 2025 – Jul 2026 |
| Donelson-Erwin 10B O-10-57561 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 279K | 468K | Feb 2022 – Jul 2026 |
| Fischer-Erwin 10M O-10-63647 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 272K | 201K | Feb 2025 – Jul 2026 |
| Erwin-Murray 45R O-10-63831 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 260K | 268K | Mar 2025 – Jul 2026 |
| Erwin -C- O-10-31954 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 6 | 249K | 364K | Jan 1993 – Jul 2026 |
| Erwin-Murray 45O O-10-64104 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 246K | 286K | Sep 2025 – Jul 2026 |
| Fischer-Erwin 10G O-10-63605 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 242K | 237K | Jan 2025 – Jul 2026 |
| Erwin-Beth 38B O-10-62370 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 242K | 474K | Jun 2024 – Jul 2026 |
| Erwin-Murray 45K O-10-64171 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 238K | 214K | Sep 2025 – Jul 2026 |
| Erwin-Todd 39C O-10-61873 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 236K | 292K | Jul 2024 – Jul 2026 |
| Erwin "K" O-10-37609 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 6 | 231K | 356K | Sep 2005 – Jul 2026 |
| Erwin-Murray 45S O-10-63753 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 229K | 247K | Mar 2025 – Jul 2026 |
| Erwin "J" O-10-37690 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 5 | 228K | 227K | Nov 2005 – Jul 2026 |
| Erwin-Beth 38A O-10-62455 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 227K | 371K | Jul 2024 – Jul 2026 |
| UL Kerwin a 18-12 O-10-52346 | Apache Corporation only | Phantom (Wolfcamp) | Ward | 1 | 224K | 314K | Mar 2019 – Jul 2026 |
| Erwin-Murray 45B O-10-58228 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 222K | 823K | Oct 2022 – Jul 2026 |
| Erwin-Murray 45I O-10-58230 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 215K | 525K | Sep 2022 – Jul 2026 |
| Fischer-Erwin 10O O-10-63606 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 191K | 188K | Jan 2025 – Jul 2026 |
| Donelson-Erwin 10G O-10-57486 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Glasscock | 1 | 189K | 540K | May 2022 – Jul 2026 |
| Fischer-Erwin 10I O-10-63646 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 185K | 160K | Feb 2025 – Jul 2026 |
| Erwin-Todd 39B O-10-62110 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 183K | 196K | Jul 2024 – Jul 2026 |
| Donelson-Erwin 10E O-10-57485 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Glasscock | 1 | 181K | 690K | May 2022 – Jul 2026 |
| Erwin-Murray 45P O-10-63752 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 179K | 180K | Mar 2025 – Jul 2026 |
| Fischer-Erwin 10H O-10-63561 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 173K | 151K | Jan 2025 – Jul 2026 |
| Fischer-Erwin 10J O-10-63779 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 171K | 147K | Mar 2025 – Jul 2026 |
| Erwin-Murray 45N O-10-64103 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 151K | 186K | Apr 2025 – Jul 2026 |
| Erwin "H" O-10-37757 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 4 | 145K | 223K | Sep 2005 – Jul 2026 |
| Erwin-Murray 45Q O-10-63765 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 144K | 289K | Feb 2025 – Jul 2026 |
| Erwin-Todd 39E O-10-62106 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 142K | 140K | Aug 2024 – Jul 2026 |
| Erwin-Murray 45T O-10-63764 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 142K | 200K | Feb 2025 – Jul 2026 |