| John Bumpus GU O-6-14529 | Diversified Production LLC only | Willow Springs (Travis Peak) | Gregg | 1 | 268K | 225K | Jul 2005 – Jul 2026 |
| Jones, Golden O-6-13435 | Faulconer Energy, LLC only | Willow Springs (Travis Peak) | Gregg | 1 | 219K | 247K | Jul 1995 – Jul 2026 |
| Fisher Oil Unit O-6-12842 | Dorfman Production Company only | Willow Springs (Travis Peak) | Gregg | 1 | 143K | 744K | Jan 1993 – Jul 2026 |
| Smith Oil Unit O-6-13689 | Craton Operating LLC only | Willow Springs (Travis Peak) | Gregg | 2 | 86.3K | 611K | May 1997 – Jul 2026 |
| Fisher-Duncan O-6-12963 | Craton Operating LLC only | Willow Springs (Travis Peak) | Gregg | 1 | 62.9K | 393K | Jan 1993 – Jul 2026 |
| Treadaway O-6-15231 | Diversified Production LLC only | Willow Springs (Travis Peak) | Gregg | 2 | 55.2K | 81.6K | Nov 2013 – Jul 2026 |
| Toler Gas Unit O-6-13982 | Craton Operating LLC only | Willow Springs (Travis Peak) | Gregg | 1 | 48.7K | 1.29M | Jan 2000 – Jul 2026 |
| Killingsworth, Col. Ike O-6-14956 | Buffco Production Inc. only | Willow Springs (Travis Peak) | Gregg | 1 | 38.9K | 449 | Nov 2008 – Jul 2026 |
| Fisher, Caddie O-6-14058 | Shoco Production, L.P. only | Willow Springs (Travis Peak) | Gregg | 1 | 37.7K | 472K | May 2000 – May 2018 |
| Maud Smith O-6-14471 | Diversified Production LLC only | Willow Springs (Travis Peak) | Gregg | 1 | 29.4K | 68.1K | May 2005 – Jul 2026 |
| Pine Tree Isd O-6-13954 | XTO Energy Inc. only | Willow Springs (Travis Peak) | Gregg | 1 | 28.6K | 301K | Mar 1999 – Sep 2021 |
| Hamby Heirs 1 O-6-13510 | XTO Energy Inc. only | Willow Springs (Travis Peak) | Gregg | 1 | 26.1K | 112K | Jan 1996 – Aug 2021 |
| Melton, L. L. "A" O-6-14151 | Faulconer Energy, LLC only | Willow Springs (Travis Peak) | Gregg | 1 | 23.2K | 160K | Sep 2000 – Mar 2026 |
| Barrett, J. C. O-6-15176 | Diversified Production LLC only | Willow Springs (Travis Peak) | Gregg | 3 | 22.2K | 91.6K | Oct 2011 – Jul 2026 |
| Mackey O-6-13672 | O.T. Oil only | Willow Springs (Travis Peak) | Gregg | 1 | 21.3K | 0 | Mar 1997 – Jul 2026 |
| Whitehurst, T. F. Est. O-6-15571 | Faulconer Energy, LLC only | Willow Springs (Travis Peak) | Gregg | 1 | 18.6K | 24.9K | Dec 2017 – Jul 2026 |
| Jones, G.H. Est. O-6-13559 | Cook Exploration Co. only | Willow Springs (Travis Peak) | — | 1 | 18.4K | 216K | Jul 1996 – Jul 2026 |
| Hamby Heirs 2 O-6-13556 | Faulconer Energy, LLC only | Willow Springs (Travis Peak) | Gregg | 1 | 18K | 295K | Feb 1996 – Jul 2026 |
| Free, J.W. Oil Unit O-6-15237 | Diversified Production LLC only | Willow Springs (Travis Peak) | Upshur | 1 | 15.9K | 44.1K | Dec 2013 – Jul 2026 |
| Alexander, J. H. O-6-15743 | Sydri Operating, LLC only | Willow Springs (Travis Peak) | Gregg | 1 | 14.7K | 106K | Jan 2020 – Jul 2026 |
| Stevens Gas Unit O-6-12882 | Craton Operating LLC only | Willow Springs (Travis Peak) | Gregg | 1 | 14.7K | 196K | Jan 1993 – Jul 2026 |
| Mackey, L. L. O-6-14044 | Buffco Production Inc. only | Willow Springs (Travis Peak) | Gregg | 1 | 13.7K | 70.6K | Oct 2000 – May 2019 |
| Wood, Bob O-6-15561 | Diversified Production LLC only | Willow Springs (Travis Peak) | Gregg | 1 | 13.1K | 20.2K | Mar 2016 – Jul 2026 |
| Norris, N.C. Heirs O-6-13665 | Buffco Production Inc. only | Willow Springs (Travis Peak) | Gregg | 1 | 13K | 210K | Mar 1997 – Jul 2026 |
| Taylor Anne "A" O-6-15556 | Buffco Production Inc. only | Willow Springs (Travis Peak) | Gregg | 1 | 12.6K | 65.1K | Dec 2017 – Jul 2026 |
| Brown, Cleve O-6-13373 | Faulconer Energy, LLC only | Willow Springs (Travis Peak) | Gregg | 2 | 12.5K | 86.1K | Oct 1994 – Jun 2026 |
| Coldwell, Dallas O-6-14642 | Diversified Production LLC only | Willow Springs (Travis Peak) | Gregg | 1 | 11.4K | 52.9K | Nov 2006 – Jul 2026 |
| Pugh Meadows O-6-14107 | Samson Lone Star LP only | Willow Springs (Travis Peak) | Gregg | 1 | 11.3K | 136K | May 2001 – Nov 2002 |
| McKinley O-6-15932 | Buffco Production Inc. only | Willow Springs (Travis Peak) | Gregg | 1 | 10.3K | 1.71K | Dec 2022 – Jul 2026 |
| Hayes O-6-12949 | Carter Resources only | Willow Springs (Travis Peak) | Gregg | 1 | 8.39K | 160K | Jan 1993 – Jun 2002 |
| Melton Gas Unit O-6-15730 | Buffco Production Inc. only | Willow Springs (Travis Peak) | Gregg | 1 | 8.26K | 78 | Sep 2019 – Jul 2026 |
| Rosa Lee Jones Unit O-6-14136 | XTO Energy Inc. only | Willow Springs (Travis Peak) | Gregg | 1 | 7.63K | 18.2K | Dec 2000 – Mar 2015 |
| Norris Estate O-6-13565 | Reynolds Drilling Co., Inc. only | Willow Springs (Travis Peak) | Gregg | 1 | 5.79K | 45.5K | Aug 1996 – Nov 2001 |
| Skipper Unit O-6-13868 | XTO Energy Inc. only | Willow Springs (Travis Peak) | Gregg | 1 | 5.04K | 155K | Nov 1998 – Sep 2004 |
| Driggers, D.C. A O-6-13492 | Sonat Exploration Company -Tyler only | Willow Springs (Travis Peak) | Gregg | 1 | 3.71K | 199K | Mar 1995 – Apr 1998 |
| Jones, Rosa Lee "A" O-6-14141 | Faulconer Energy, LLC only | Willow Springs (Travis Peak) | Gregg | 1 | 3.13K | 9.8K | Jan 2002 – Jul 2026 |
| Driggers, D. C. O-6-13470 | Faulconer Energy, LLC only | Willow Springs (Travis Peak) | Gregg | 2 | 2.79K | 146K | Dec 1994 – Jul 2026 |
| Frederick O-6-14946 | Tanos Exploration II, LLC only | Willow Springs (Travis Peak) | Gregg | 1 | 2.06K | 4.91K | Feb 2010 – Apr 2018 |
| Meadows, Pugh Gas Unit O-6-16117 | Buffco Production Inc. only | Willow Springs (Travis Peak) | Gregg | 1 | 1.67K | 99.8K | Apr 2025 – Jul 2026 |
| Fisher-Duncan GU O-6-16175 | Craton Operating LLC only | Willow Springs (Travis Peak) | Gregg | 1 | 1.62K | 19 | Mar 2025 – Jul 2026 |
| Crawford, H. O-6-15997 | Buffco Production Inc. only | Willow Springs (Travis Peak) | Harrison | 1 | 1.56K | 28.6K | Dec 2023 – Jul 2026 |
| Hayes O-6-15379 | Faulconer Energy, LLC only | Willow Springs (Travis Peak) | Gregg | 1 | 652 | 0 | Jan 2015 – Jul 2026 |
| Mackey, L.L. O-6-16004 | Buffco Production Inc. only | Willow Springs (Travis Peak) | Gregg | 1 | 572 | 12K | Nov 2023 – Jul 2026 |
| Allen, Mary B. O-6-13841 | Faulconer Energy, LLC only | Willow Springs (Travis Peak) | Gregg | 2 | 505 | 5.08K | Feb 1998 – Jul 2026 |
| Thomas, A. G. et AL O-6-11771 | Sonat Exploration Company -Tyler only | Willow Springs (Travis Peak) | Gregg | 1 | 44 | 4.1K | Jan 1993 – Sep 1994 |
| Jeffrey Unit G-6-87939 | CLR Secondary Recovery, LLC only | Willow Springs (Travis Peak) | Gregg | 1 | 0 | 1.02M | Jan 1993 – Jul 2026 |
| Mott Unit G-6-87938 | Powell, Gene Investments, Inc. only | Willow Springs (Travis Peak) | Gregg | 1 | 0 | 320K | Jan 1993 – Jun 2014 |
| Wscgu (Robertson) G-6-47448 | XTO Energy Inc. only | Willow Springs (Travis Peak) | — | 1 | 0 | 1.24M | Jan 1993 – Apr 2013 |
| Tuttle, A.J. G-6-86771 | WTR Operating LLC only | Willow Springs (Travis Peak) | Gregg | 1 | 0 | 280K | Jan 1993 – Jul 2026 |
| Stevens Gas Unit G-6-70977 | Craton Operating LLC only | Willow Springs (Travis Peak) | — | 1 | 0 | 555K | Jan 1993 – Jul 2026 |