| Lanik a - Lanik B SA 1 G-2-295810 | BPX Operating Company only | Eagleville (Eagle Ford-2) | De Witt | 1 | 643K | 2.46M | Oct 2019 – Apr 2026 |
| Fiver State 18-27A-54-4 G-10-288270 | WPX Energy Permian, LLC only | Phantom (Wolfcamp) | Reeves | 1 | 643K | 2.58M | Nov 2019 – Mar 2026 |
| Texas Ten-Deavenport E39A O-10-53194 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 643K | 1.19M | Nov 2019 – Apr 2026 |
| Langford 419 O-11-69299 | Southwest Royalties, Inc. only | Block D, South (Devonian) | Yoakum | 1 | 643K | 0 | Aug 2008 – Apr 2026 |
| Diamond Rio 9-16H O-10-56352 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 643K | 1.45M | Jan 2022 – Apr 2026 |
| Sale Ranch 15G O-10-49116 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 1 | 643K | 1.74M | Oct 2017 – Apr 2026 |
| Kerr-McGee G-3-230364 | Wagner Oil Company only | Buye (Lower Cook Mtn. 3) | Liberty | 1 | 643K | 4.19M | May 2007 – Apr 2026 |
| Sam Prewitt 255-256 D-1 O-10-52840 | Noble Energy Inc only | Phantom (Wolfcamp) | Reeves | 1 | 643K | 1.66M | Aug 2019 – Apr 2026 |
| WTH 24-13 A O-10-56037 | Diamondback E&P LLC only | Spraberry (Trend Area) | Midland | 2 | 643K | 3.35M | Aug 2022 – Apr 2026 |
| Sacks, Sylvia #1 O-3-20800 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Lee | 5 | 643K | 997K | Jan 1993 – Apr 2026 |
| Somervell 6666 FO2 O-11-68810 | Burnett Oil Co., Inc. only | Legacy (Tannehill Sand) | King | 10 | 643K | 2.75K | Jul 2005 – Jun 2025 |
| Huff Doback G-10-296030 | Apache Corporation only | Phantom (Wolfcamp) | Loving | 1 | 643K | 4.42M | Jun 2022 – Apr 2026 |
| A Mueller Unit A O-2-9796 | Burlington Resources O & G Co LP only | Eagleville (Eagle Ford-2) | De Witt | 2 | 643K | 1.38M | May 2012 – Apr 2026 |
| Mary Scharbauer B2 O-10-49024 | COG Operating LLC only | Parks (Consolidated) | Midland | 1 | 643K | 1.5M | May 2017 – Apr 2026 |
| Allison O-9-18587 | Summit Petroleum LLC only | Spraberry (Trend Area) | Upton | 13 | 643K | 3.27M | Nov 2013 – Apr 2026 |
| Mulholland EF O-1-20753 | Crescent Energy Operating, LLC only | Eagleville (Eagle Ford-1) | McMullen | 3 | 643K | 1.65M | Oct 2022 – Apr 2026 |
| Maurer-McFarland Unit AC O-2-12115 | Marathon Oil EF LLC only | Sugarkane (Austin Chalk) | Karnes | 2 | 643K | 1.53M | May 2021 – Apr 2026 |
| Gething, E. E. NCT-2 O-14-1536 | Diamond S Energy Company only | Panhandle Gray County Field | Gray | 17 | 642K | 192K | Jan 1993 – Apr 2026 |
| Bum -A- O-10-2123 | Maverick Permian LLC only | Goldsmith (Clear Fork) | Andrews | 14 | 642K | 6.93M | Jan 1993 – Apr 2026 |
| Chalk, Mary O-10-19033 | Conocophillips Company only | Howard-Glasscock (Glorieta) | Howard | 29 | 642K | 188K | Jan 1993 – Nov 2011 |
| Elkin 44-32 Unit 1 O-10-52091 | Diamondback E&P LLC only | Spraberry (Trend Area) | Midland | 3 | 642K | 3.35M | Mar 2019 – Apr 2026 |
| State Hedblom 56-T3-24 G-10-286547 | BPX Operating Company only | Phantom (Wolfcamp) | Reeves | 1 | 642K | 3.37M | Jul 2018 – Apr 2026 |
| Sandworm State 57-3-14 Unit G-10-282728 | Anadarko E&P Onshore LLC only | Phantom (Wolfcamp) | Reeves | 1 | 642K | 3.98M | Oct 2017 – Apr 2026 |
| Smith, Ed S. Heirs "A" O-11-11982 | Sulphur River Exploration, Inc. only | West (Devonian) | Yoakum | 2 | 642K | 118K | Jan 1993 – Apr 2026 |
| Bumpas, C. O-7-6014 | Basa Resources, Inc. only | East Texas | Gregg | 20 | 642K | 308K | Jan 1993 – Apr 2026 |
| Sebastian the Ibis 34-27 A O-10-57018 | Birch Operations, Inc. only | Spraberry (Trend Area) | Howard | 2 | 642K | 1.51M | Jan 2022 – Apr 2026 |
| Aeolus O-3-24947 | 84 Energy LLC only | Norian (Y2-B) | Newton | 1 | 642K | 676K | Dec 2006 – Jun 2025 |
| Mann, S. F. O-11-5471 | Cross Timbers Energy, LLC only | Seminole (San Angelo) | Gaines | 2 | 642K | 54.8K | Jan 1993 – Apr 2026 |
| Thomas, E., Mrs. et Al O-3-10454 | Hilcorp Energy Company only | Fannett | Jefferson | 3 | 642K | 1.13M | Jan 1993 – Apr 2026 |
| Santorini Unit O-10-55335 | Laguna Texas Resources, LLC only | Spraberry (Trend Area) | Dawson | 2 | 642K | 1.06M | May 2020 – Apr 2026 |
| CMC Sunflower 7-19 D O-10-57044 | Chevron U. S. A. Inc. only | Spraberry (Trend Area) | Midland | 2 | 641K | 2.12M | Sep 2022 – Apr 2026 |
| Sir Barton 4 State Unit G-10-282668 | Coterra Energy Operating Co. only | Ford, West (Wolfcamp) | Culberson | 1 | 641K | 5.4M | Feb 2017 – Nov 2025 |
| Logsdon, Etal -B- O-10-17106 | Texland Petroleum, L.P. only | Fullerton (San Andres) | Andrews | 19 | 641K | 81.6K | Jan 1993 – Apr 2026 |
| Pib G O-10-62879 | Oxyrock Operating, LLC only | Spraberry (Trend Area) | Midland | 3 | 641K | 1.12M | Dec 2024 – Apr 2026 |
| Powell 33X O-9-19436 | Ovintiv USA Inc. only | Spraberry (Trend Area) | Upton | 2 | 641K | 1.91M | Sep 2016 – Apr 2026 |
| South Elephant Wolfcamp Unit O-10-47744 | Resolute Natural Res. Co., LLC only | Phantom (Wolfcamp) | Reeves | 4 | 641K | 2.24M | Jun 2016 – Apr 2026 |
| Maryruth-Anderson 47F O-10-53183 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 1 | 641K | 475K | Nov 2019 – Apr 2026 |
| Josey Wales 640-669 O-11-71108 | Riley Permian Operating Co, LLC only | Platang (San Andres) | Yoakum | 2 | 641K | 1.49M | Oct 2020 – Apr 2026 |
| Shafer 32-12 B Unit O-10-60684 | Highpeak Energy Holdings, LLC only | Spraberry (Trend Area) | Borden | 6 | 641K | 428K | Aug 2023 – Apr 2026 |
| Menotti Unit a Las O-1-18171 | Ineos USA Oil & Gas LLC only | Eagleville (Eagle Ford-1) | La Salle | 4 | 641K | 1.31M | Dec 2014 – Apr 2026 |
| Sale Ranch 16G O-10-47031 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 1 | 641K | 831K | Aug 2015 – Apr 2026 |
| Blakeway Unit H Dim O-1-16655 | Ineos USA Oil & Gas LLC only | Briscoe Ranch (Eagleford) | Dimmit | 4 | 641K | 1.56M | Jan 2013 – Apr 2026 |
| Zappe Unit O-1-15321 | EOG Resources, Inc. only | Eagleville (Eagle Ford-1) | Gonzales | 5 | 641K | 947K | Apr 2011 – Mar 2024 |
| Electric State 57-33 G-10-289025 | Coterra Energy Operating Co. only | Phantom (Wolfcamp) | Reeves | 1 | 640K | 4.85M | Jan 2020 – Apr 2026 |
| Sallie 'D' O-10-38338 | Diamondback E&P LLC only | Sallie Ann (Spraberry-Wolfcamp) | Ector | 10 | 640K | 914K | Jun 2007 – Apr 2026 |
| Megalodon 50 WA A O-10-61319 | Crescent Energy Operating, LLC only | Phantom (Wolfcamp) | Ward | 1 | 640K | 1.33M | Mar 2024 – Apr 2026 |
| HSC 320C O-10-56154 | Ovintiv USA Inc. only | Spraberry (Trend Area) | Martin | 2 | 640K | 1.31M | Feb 2021 – Apr 2026 |
| Slick, T. B. A-229 O-4-12873 | Hilcorp Energy Company only | Rincon (Vicksburg 89A) | Starr | 2 | 640K | 957K | Dec 1999 – Jun 2015 |
| Eaglehead 'C' A4 O-9-20170 | Sem Operating Company LLC only | Spraberry (Trend Area) | Reagan | 2 | 640K | 1.76M | Sep 2018 – Apr 2026 |
| Granger 5A O-10-55006 | Ovintiv USA Inc. only | Spraberry (Trend Area) | Howard | 2 | 640K | 1.08M | Sep 2020 – Apr 2026 |