| Tetens "A" O-11-67910 | Free Rein Operating LLC only | Harris (San Andres) | Gaines | 7 | 770K | 37.9K | Mar 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-Freeman 15E O-10-58476 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 482K | 1.39M | Feb 2023 – Aug 2026 |
| Freeman, D. A. et Al O-3-19148 | Browning Oil Company, Inc. only | Gini (Wilcox) | Fayette | 5 | 471K | 1.37M | by Jan 1993 – May 2017 |
| Preston-Freeman 15G O-10-58286 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 447K | 1.23M | Feb 2023 – Aug 2026 |
| Free 32 O-10-41478 | Oxyrock Operating, LLC only | Spraberry (Trend Area) | Howard | 7 | 438K | 3.91M | May 2011 – 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 |
| Shackelford-Freeman 10D O-10-62882 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 386K | 1.3M | Mar 2025 – 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-Freeman 15B O-10-58243 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 352K | 1.42M | Feb 2023 – Aug 2026 |
| Shackelford-Freeman 10K O-10-62997 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 340K | 1.13M | Mar 2025 – Aug 2026 |
| Shackelford-Freeman 10E O-10-62872 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 328K | 990K | Mar 2025 – Aug 2026 |
| Preston-Freeman 15K O-10-58425 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 327K | 922K | Feb 2023 – Aug 2026 |
| Preston-Freeman 15F O-10-58598 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 312K | 1.11M | Feb 2023 – Aug 2026 |
| Preston-Freeman 15H O-10-58599 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 306K | 1.46M | Feb 2023 – Aug 2026 |
| Shackelford-Freeman 10L O-10-62944 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 306K | 755K | Mar 2025 – Aug 2026 |
| Shackelford-Freeman 10F O-10-63010 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 275K | 618K | Mar 2025 – Aug 2026 |
| Preston-Freeman 15D O-10-58474 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 261K | 903K | Feb 2023 – Aug 2026 |
| Preston-Freeman 15J O-10-58583 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 259K | 1.17M | Feb 2023 – Aug 2026 |
| Freeman-Schott Unit O-3-21637 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Fayette | 1 | 237K | 740K | by Jan 1993 – Aug 2026 |
| Free-A O-7-6671 | Basa Resources, Inc. only | East Texas | Upshur | 15 | 229K | 34.6K | by Jan 1993 – Aug 2026 |
| Freeman-Farmer O-8-28354 | Sojourner Drilling Corporation only | Noodlekirk (Ellenburger) | Jones | 1 | 227K | 40.1K | Jan 1998 – Jul 2026 |
| Pearl State Unit O-9-15842 | Stallion Operating, LLC only | Freedom (Wolfcamp) | Crockett | 1 | 212K | 49.3K | Oct 2005 – Apr 2020 |
| Killam Freer Ranch "196" O-4-13188 | Killam Oil Co., Ltd. only | Tiger (Queen City) | Duval | 5 | 184K | 143K | Sep 2003 – Aug 2026 |
| Preston-Freeman 15L O-10-58410 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 178K | 1.02M | Feb 2023 – Aug 2026 |
| Free 40 O-10-39521 | New Height Energy, LLC only | Spraberry (Trend Area) | Howard | 4 | 169K | 835K | Feb 2009 – Jun 2026 |
| Onyx O-9-16020 | Stallion Operating, LLC only | Freedom (Ruby Limestone) | Crockett | 1 | 161K | 680K | May 2006 – Aug 2026 |
| Capitan Bowling Cntr., Inc -B- O-9-6120 | Free Rein Operating LLC only | Four Corners (Crosscut, LO) | Schleicher | 3 | 160K | 10.6K | by Jan 1993 – Aug 2026 |
| Winfree, William O-3-3286 | Kilmarnock Oil Company, Inc. only | Orange | Orange | 5 | 156K | 21 | by Jan 1993 – Aug 2026 |
| Schott-Freeman Unit O-3-21625 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Fayette | 1 | 152K | 1.15M | by Jan 1993 – Aug 2026 |
| Freeman, Bessie O-10-33708 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 5 | 149K | 430K | Mar 1993 – Nov 2020 |
| Freeman "A" O-10-33492 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 3 | 145K | 463K | by Jan 1993 – Nov 2012 |
| Freedom Unit O-10-55687 | R2Q Operating LLC only | Garden City, S. (Wolfcamp) | Nolan | 1 | 145K | 403K | Mar 2021 – Aug 2026 |
| Winfree O-3-3253 | Kilmarnock Oil Company, Inc. only | Orange | Orange | 5 | 133K | 21 | by Jan 1993 – Aug 2026 |
| Freeman Unit O-3-26377 | EOG Resources, Inc. only | Southern Bay (Eagle Ford) | Lee | 1 | 132K | 72.7K | Apr 2014 – Jul 2026 |
| Onyx State Unit "C" #5 O-9-16018 | MLC Operating, LP only | Freedom (Ruby Limestone) | Crockett | 1 | 131K | 610K | Aug 2006 – Apr 2017 |
| Freeman 22 O-10-42199 | Ovintiv USA Inc. only | Spraberry (Trend Area) | Martin | 2 | 121K | 218K | Jul 2011 – Aug 2026 |
| M Winfree Heirs O-3-26171 | Sandpoint Texas LLC only | Barbers Hill | Chambers | 2 | 112K | 0 | Feb 2013 – Jul 2026 |
| LO Free 38 O-10-50050 | Diamondback E&P LLC only | Spraberry (Trend Area) | Martin | 2 | 111K | 206K | Feb 2018 – Aug 2026 |
| Freeman '1' O-10-44197 | Rock Fish Operating LLC only | Spraberry (Trend Area) | Dawson | 2 | 110K | 42.4K | Jul 2013 – Aug 2026 |
| Free Ride AW O-1-21893 | Trailblazer Energy Resources,llc only | Eagleville (Eagle Ford-1) | Atascosa | 1 | 109K | 43.9K | Oct 2025 – Aug 2026 |
| Freeman, G. M. O-8-3067 | Scout Energy Management LLC only | White Flat | Nolan | 4 | 101K | 49.5K | by Jan 1993 – Aug 2026 |
| Freeman, C. N. O-2-8330 | Edge Petroleum Oper. Co., Inc. only | Freeman (Hockley 4145) | Live Oak | 1 | 94.4K | 86.8K | May 1997 – Apr 2002 |
| Rogers, U. E. O-9-3548 | Free Rein Operating LLC only | Tuckmar, South (3700 Sand) | Menard | 1 | 88K | 22 | by Jan 1993 – Aug 2026 |
| Freewilly 41 O-10-43787 | Apache Corporation only | Spraberry (Trend Area) | Glasscock | 2 | 83.8K | 593K | Jan 2013 – Aug 2026 |
| Freeman-Freeman Unit O-1-12998 | P1 Energy, LLC only | Christian (6800) | Gonzales | 1 | 79.1K | 25.3K | by Jan 1993 – Aug 2026 |
| Welsh, Katherine O-10-29455 | Free Rein Operating LLC only | Moore | Howard | 14 | 76.4K | 3.24K | by Jan 1993 – Aug 2026 |
| Free, J. W. O-7-8128 | John P. Bogdanich Operating, LLC only | East Texas | Upshur | 8 | 72.4K | 20 | by Jan 1993 – Aug 2026 |
| Pan AM Fee O-10-20111 | Free Rein Operating LLC only | Bar-Mar (Tubb) | Crane | 1 | 67.6K | 1.4K | by Jan 1993 – Aug 2026 |
| Freeman "B" O-13-27854 | Grayson Petroleum Company only | Southmayd (Oil Creek) | Grayson | 1 | 67.1K | 21 | by Jan 1993 – Aug 2026 |