| Pecos Bill State 204-203 Unit A O-10-54116 | Noble Energy Inc only | Phantom (Wolfcamp) | Reeves | 3 | 1.74M | 5.57M | Mar 2020 – Apr 2026 |
| Pecos Bill State 204-203 Unit B O-10-54117 | Noble Energy Inc only | Phantom (Wolfcamp) | Reeves | 2 | 1.25M | 3.17M | Mar 2020 – Apr 2026 |
| 9204 JV-P Whit O-10-33604 | Parsley Energy Operations, LLC only | Cobra (Wolfcamp) | Glasscock | 3 | 613K | 749K | Jan 1993 – Feb 2019 |
| Watkins-Burkitt 1204G O-9-20230 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Reagan | 2 | 568K | 2.19M | Mar 2019 – Apr 2026 |
| Utl Bufflehead 2040A G-10-301085 | Continental Resources, Inc. only | Ruppel (Woodford) | Ward | 1 | 537K | 7.1M | Oct 2024 – Apr 2026 |
| Thomas 203-204 Unit G-10-292937 | Permian Resources Operating, LLC only | Phantom (Wolfcamp) | Ward | 1 | 517K | 4.74M | Dec 2021 – Apr 2026 |
| Howard Posner 83-TTT-B33 SA 204H O-10-51743 | Matador Production Company only | Phantom (Wolfcamp) | Loving | 1 | 508K | 2.14M | Feb 2019 – Apr 2026 |
| Watkins-Burkitt 1204E O-9-20228 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Reagan | 2 | 471K | 1.73M | Mar 2019 – Apr 2026 |
| 9204 JV-P Whit -C- O-10-33956 | Parsley Energy Operations, LLC only | Cobra (Wolfcamp) | Glasscock | 2 | 452K | 1.64M | Sep 1993 – Aug 2019 |
| Cason 203-204 Unit G-10-292834 | Permian Resources Operating, LLC only | Phantom (Wolfcamp) | Ward | 1 | 418K | 4.37M | Dec 2021 – Apr 2026 |
| Lucy 203-204 Unit G-10-292816 | Permian Resources Operating, LLC only | Phantom (Wolfcamp) | Ward | 1 | 388K | 3.88M | Dec 2021 – Apr 2026 |
| Lucy 203-204 Unit G-10-293050 | Permian Resources Operating, LLC only | Phantom (Wolfcamp) | Ward | 1 | 368K | 3.78M | Dec 2021 – Apr 2026 |
| Perry State 204 O-10-40606 | Permian Resources Operating, LLC only | Wolfbone (Trend Area) | Reeves | 4 | 332K | 620K | Dec 2010 – May 2025 |
| Lucy 203-204 Unit G-10-292748 | Permian Resources Operating, LLC only | Phantom (Wolfcamp) | Ward | 1 | 318K | 3.42M | Dec 2021 – Apr 2026 |
| Watkins-Wavle 1204B O-9-20901 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Reagan | 1 | 296K | 1.01M | Mar 2020 – Apr 2026 |
| Watkins-Wavle 1204A O-9-20994 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Reagan | 1 | 295K | 773K | Mar 2020 – Apr 2026 |
| Maralo 41-32 Allocation 3204 O-10-47685 | XTO Energy Inc. only | Spraberry (Trend Area) | Midland | 1 | 289K | 2.01M | Feb 2016 – Apr 2026 |
| Watkins-Wavle 1204C O-9-20960 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Reagan | 1 | 283K | 913K | Mar 2020 – Apr 2026 |
| Carrasco A204 O-1-19476 | Trinity Operating (Usg), LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 228K | 298K | Aug 2018 – Apr 2026 |
| Lucy 203-204 Unit G-10-292689 | Permian Resources Operating, LLC only | Phantom (Wolfcamp) | Ward | 1 | 224K | 3.71M | Dec 2021 – Apr 2026 |
| Amber a 204-225 UB O-9-21603 | RP Operating, L.L.C. only | Spraberry (Trend Area) | Reagan | 1 | 218K | 465K | Mar 2022 – Apr 2026 |
| Amber B 204-225 UB O-9-21633 | RP Operating, L.L.C. only | Spraberry (Trend Area) | Reagan | 1 | 213K | 569K | Apr 2022 – Apr 2026 |
| Watkins-Burkitt 1204F O-9-20250 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Reagan | 1 | 208K | 1.22M | Mar 2019 – Apr 2026 |
| Amber C 204-225 LB O-9-22538 | RP Operating, L.L.C. only | Spraberry (Trend Area) | Reagan | 1 | 170K | 591K | Jan 2024 – Apr 2026 |
| Simpson Canyon 2044 Unit O-9-15894 | Surge Solutions, Inc. only | Bluegrass (Wolfcamp) | Crockett | 1 | 167K | 167K | Dec 2005 – Nov 2025 |
| 8204 JV-P Elmer O-10-35223 | BTA Oil Producers only | Cobra (Wolfcamp) | Glasscock | 1 | 146K | 184K | Feb 1997 – Aug 2002 |
| Amber D 204-225 UB O-9-22539 | RP Operating, L.L.C. only | Spraberry (Trend Area) | Reagan | 1 | 144K | 632K | Jan 2024 – Apr 2026 |
| 8204 JV-P Elmer O-10-33846 | BTA Oil Producers only | Cobra (Wolfcamp) | Glasscock | 2 | 132K | 115K | May 1993 – May 1996 |
| Simpson Canyon 2043 Unit O-9-15938 | Surge Solutions, Inc. only | Bluegrass (Wolfcamp) | Crockett | 1 | 122K | 30.2K | Mar 2006 – Jan 2026 |
| Rogers-McGarraugh 237/204 A O-14-9745 | Mewbourne Oil Company only | Allen-Parker (Marmaton) | Lipscomb | 1 | 101K | 612K | May 2021 – Apr 2026 |
| Big Four Colony a 204 G-1-300045 | Trinity Operating (Usg), LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 99K | 468K | Aug 2022 – Apr 2026 |
| Watkins "1204" O-9-17631 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Reagan | 3 | 93.8K | 252K | Aug 2011 – Sep 2022 |
| McGarraugh 204 O-14-8880 | Corlena Oil Company only | Lipscomb, S.E. (Cleveland) | Lipscomb | 1 | 93.7K | 334K | Nov 2012 – Apr 2026 |
| Simpson Canyon 2045 Unit O-9-15741 | Surge Solutions, Inc. only | Bluegrass (Wolfcamp) | Crockett | 2 | 90.9K | 1.7K | Oct 2004 – Mar 2026 |
| Humble-Duval Ranch Sec 204 O-4-11211 | Southwest Royalties, Inc. only | Petrox (Government Wells) | Duval | 4 | 89.2K | 34.3K | Jan 1993 – Jun 2006 |
| Big Wells Mipa 204 G-1-294965 | Trinity Operating (Usg), LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 78.7K | 288K | Dec 2022 – Apr 2026 |
| 9204 JV-P Burnstedt O-10-35862 | BTA Oil Producers only | Cobra (Wolfcamp) | Glasscock | 1 | 69.9K | 202K | Sep 1998 – Oct 2006 |
| Big Wells Mipa 204 G-1-295094 | Trinity Operating (Usg), LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 66.7K | 260K | Dec 2022 – Apr 2026 |
| Jernigan, R. A. Unit 3 O-6-13429 | Par Minerals Corporation only | Carthage (6204 Sand) | Panola | 1 | 47.9K | 231K | May 1995 – Aug 2000 |
| K & H Fee "2042" G-4-149905 | Killam Oil Co., Ltd. only | B.M.T. (Lobo Cons.) | Webb | 1 | 47.3K | 5.09M | May 1994 – Apr 2026 |
| Hodges '204' G-14-275286 | Mewbourne Oil Company only | Allen-Parker (Marmaton) | Roberts | 1 | 42.5K | 620K | May 2014 – Apr 2026 |
| Hodges '204' O-14-8861 | Mewbourne Oil Company only | Pan Petro (Cleveland) | Roberts | 1 | 39.9K | 273K | Mar 2013 – Apr 2026 |
| Hodges '204' G-14-276513 | Mewbourne Oil Company only | Allen-Parker (Marmaton) | Roberts | 1 | 39.6K | 915K | Oct 2014 – Apr 2026 |
| Watkins "1204B" O-9-18206 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Reagan | 1 | 35.7K | 96.6K | Nov 2012 – Aug 2023 |
| Mullins O-6-13382 | Ursus Oil and Gas only | Carthage (6204 Sand) | Panola | 1 | 33.2K | 262K | Nov 1994 – Feb 2026 |
| K & H Fee "2042" G-4-107363 | Killam Oil Co., Ltd. only | Villegas (Middle Wilcox 7950) | Webb | 1 | 27.1K | 893K | Jan 1993 – Mar 2000 |
| 8204 JV-P Elmer O-10-28966 | OXY USA Inc. only | Blalock Lake (Wolfcamp) | Glasscock | 1 | 25.4K | 11.9K | Jan 1993 – Mar 2018 |
| Williams 2046 O-8-30515 | Ampak Oil Company only | Callahan County Regular | Callahan | 3 | 23.6K | 55K | Feb 2010 – Mar 2026 |
| Perry State 204 O-10-40589 | Thompson, J. Cleo only | Hoban (Bone Springs) | Reeves | 3 | 21.8K | 25.1K | Sep 2010 – Nov 2010 |
| Geaslin NW "204" O-9-15065 | BRP Energy, LLC only | Geaslin (Wolfcamp) | Terrell | 1 | 18.8K | 504K | Oct 2000 – Apr 2026 |