| Timberwolf State Unit O-10-49147 | U.S. Energy Development Corp only | Wolfbone (Trend Area) | Reeves | 4 | 1.04M | 2.36M | May 2017 – Aug 2026 |
| Big Timber State 57-25 Unit G-10-283094 | Coterra Energy Operating Co. only | Phantom (Wolfcamp) | Reeves | 1 | 630K | 3.14M | May 2015 – Aug 2026 |
| Timberwolf G-3-232227 | Southern Bay Operating, L.L.C. only | Woodville (Woodbine) | Tyler | 1 | 153K | 1.17M | Nov 2005 – Apr 2011 |
| State-Houston Co. Timber Co."f" O-10-23652 | Last Mile Production, LLC only | Brooklaw (Clear Fork, Lower) | Pecos | 15 | 147K | 173K | by Jan 1993 – Feb 2025 |
| Connell, A. B., -C- O-10-16545 | Cross Timbers Energy, LLC only | Metz, East (Ellenburger) | Ector | 3 | 142K | 86.6K | by Jan 1993 – Aug 2016 |
| McDonald, Ida O-10-3091 | Cross Timbers Energy, LLC only | Jordan (Ellenburger) | Ector | 3 | 141K | 220K | by Jan 1993 – Jan 2016 |
| State Houston Co. Timber Co. -A- O-10-21288 | Last Mile Production, LLC only | Sun Valley (Tubb, Lower) | Pecos | 15 | 134K | 141K | by Jan 1993 – Mar 2024 |
| Munson Unit G-3-188377 | Timberwolf Energy, Inc. only | Collins Lake (Frio 11,400 FB-B) | Brazoria | 1 | 117K | 5.84M | Nov 2001 – Aug 2026 |
| Slataper-Peterson Unit O-3-10732 | Cross Timbers Operating Company only | Hastings, S.e.(f-45 Seg-A-) | Galveston | 1 | 95.2K | 139K | by Jan 1993 – Oct 1996 |
| K. C. R. Timberland Ltd O-6-14736 | BKM Production only | Pleasant Grove | Rusk | 1 | 94.8K | 0 | Feb 2008 – Aug 2026 |
| Williamson G-3-176024 | Timberwolf Energy, Inc. only | Angleton, S. (F-4 FB-AZ) | Brazoria | 1 | 84.3K | 3.11M | Jan 2000 – Aug 2026 |
| Timberwolf Unit O-3-23396 | Magnolia Oil & Gas Operating LLC only | Giddings (Buda) | Robertson | 1 | 78.3K | 43.4K | Nov 1997 – Jun 2023 |
| Cloud, Sallie E. -A- O-8-8286 | Cross Timbers Operating Company only | Herrin (Burson Sand, Upper) | Haskell | 6 | 77.4K | 31 | by Jan 1993 – Jul 1995 |
| Timberstar Texarkana O-6-15239 | Machin & Associates, Inc. only | Iron Lake | Cass | 1 | 56.8K | 0 | Sep 2013 – Jul 2026 |
| Timber Creek Unit O-13-17088 | Brammer Petroleum, Inc. only | Timber Creek (Bruhlmeyer, Upper) | Cooke | 5 | 56.7K | 32 | by Jan 1993 – Aug 2026 |
| Timber -B- O-10-30024 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 56.7K | 93.1K | by Jan 1993 – Dec 2020 |
| Zeba O-10-24924 | Floyd, Timber Inc. only | Spraberry (Trend Area) | Midland | 2 | 51.7K | 88.8K | by Jan 1993 – Feb 2020 |
| Bpa 740 G-3-257141 | Panther Bayou Energy, LLC only | Timber Lake (Wilcox 9900 Sand) | Tyler | 1 | 47.8K | 1.67M | Sep 2010 – Nov 2017 |
| Howard No. 1 GU G-3-152680 | Timberwolf Energy, Inc. only | Angleton, S. (F-4 FB-AZ) | Brazoria | 1 | 46.6K | 5.38M | Dec 1994 – Aug 2026 |
| Timberstar O-6-14697 | Buckhorn Operating LLC only | Angie,(pettet) | San Augustine | 1 | 43.3K | 483K | Aug 2007 – Aug 2025 |
| Miles Timber G-3-265036 | Sem Operating Company LLC only | Fort Trinidad (Glen Rose, Upper) | Houston | 1 | 43.1K | 286K | Dec 2011 – Aug 2014 |
| Williamson, et Al G-3-193463 | Timberwolf Energy, Inc. only | Angleton, South (12,100 Frio) | Brazoria | 1 | 38.1K | 1.16M | Nov 2002 – Aug 2026 |
| Delta Land and Timber O-3-3079 | Well-Co Solutions, LLC only | Mercy, West | San Jacinto | 1 | 38K | 5.06K | by Jan 1993 – Jul 2026 |
| University "9"AB O-10-7041 | Cross Timbers Operating Company only | University Block 9 (Devonian) | Andrews | 1 | 33.7K | 15K | by Jan 1993 – Oct 1998 |
| Bpa 740 G-3-271043 | Neches Transport Inc. only | Timber Lake (Wilcox 9900 Sand) | Tyler | 1 | 31.4K | 1.18M | Sep 2012 – Jul 2019 |
| Howard No. 2 GU G-3-154623 | Timberwolf Energy, Inc. only | Angleton, S. (F-4 FB-AZ) | Brazoria | 1 | 30.8K | 4.11M | May 1995 – Aug 2026 |
| Connell, W. E. NCT-1 O-10-38815 | Cross Timbers Energy, LLC only | Jordan (Fusselman) | Ector | 1 | 30.3K | 77.5K | Jun 2007 – Aug 2014 |
| Cleveland, Wayne et al "C" O-14-3831 | Mmgl Txph, LLC only | Big Timber Creek (Douglas) | Hemphill | 3 | 29.9K | 900K | by Jan 1993 – Aug 2026 |
| KCR Timberland Ltd., et Al O-6-14817 | Machin & Associates, Inc. only | Pleasant Grove | Rusk | 1 | 28.4K | 0 | Sep 2008 – Oct 2013 |
| Big Lake Unit O-9-4745 | Floyd, Timber Inc. only | John Scott (Grayburg) | Reagan | 1 | 26.8K | 90 | by Jan 1993 – Oct 2016 |
| Timberstar-Davis (Pettet) 2 O-6-14964 | Merit Energy Company only | Angie,(pettet) | San Augustine | 1 | 26.8K | 245K | Apr 2010 – Jan 2021 |
| Timber Creek Unit O-13-13202 | Brammer Petroleum, Inc. only | Timber Creek (3040) | Cooke | 4 | 26.1K | 32 | by Jan 1993 – Aug 2026 |
| Timber Creek Unit O-13-17087 | Brammer Petroleum, Inc. only | Timber Creek (Bruhlmeyer, Lo.) | Cooke | 8 | 25.2K | 32 | by Jan 1993 – Aug 2026 |
| Munson Unit G-3-187135 | Timberwolf Energy, Inc. only | Collins Lake (Hackberry 11,500) | Brazoria | 1 | 25.1K | 926K | Jun 2001 – Nov 2004 |
| Adirondack Timber O-3-25366 | Prime Operating Company only | Devils Pocket (Lower Wilcox) | Newton | 1 | 24.8K | 13.5K | Apr 2009 – Nov 2018 |
| JFS Timber Gas Unit G-6-274282 | Merit Energy Company only | Woodlawn (Cotton Valley) | Harrison | 1 | 22.3K | 1.94M | May 2014 – Aug 2026 |
| Julia O-10-24479 | Floyd, Timber Inc. only | Spraberry (Trend Area) | Midland | 1 | 21.8K | 30.4K | by Jan 1993 – Mar 2015 |
| Connell, W. E. NCT-3 O-10-3099 | Cross Timbers Energy, LLC only | Jordan (Fusselman) | Ector | 4 | 20.5K | 30.7K | by Jan 1993 – Apr 2007 |
| Miles Timber G-6-278043 | Trailblazer Energy Resources,llc only | Eastham State Farm (Glenrose) | Houston | 1 | 20.4K | 156K | Sep 2014 – Apr 2025 |
| Timberwolf "A" G-6-235845 | Southern Bay Operating, L.L.C. only | Brookeland (Austin Chalk, 8800) | Tyler | 1 | 20.2K | 650K | Feb 2006 – Apr 2012 |
| Williamson G-3-158703 | Timberwolf Energy, Inc. only | Angleton, S. (Frio 13 FB-C) | Brazoria | 1 | 18.9K | 913K | Apr 1996 – Sep 2004 |
| Connell Heirs O-10-55652 | Cross Timbers Energy, LLC only | Jordan, S. (Devonian) | Ector | 1 | 18.4K | 5.71K | Mar 2021 – Jul 2022 |
| Bpa 740 G-3-278822 | Neches Transport Inc. only | Timber Lake (Wilcox 9900 Sand) | Tyler | 1 | 18.2K | 1.11M | Jun 2013 – Aug 2026 |
| JFS Timber Gas Unit G-6-275289 | Merit Energy Company only | Woodlawn (Cotton Valley) | Harrison | 1 | 17.7K | 2.09M | May 2014 – Aug 2026 |
| Williamson G-3-224124 | Timberwolf Energy, Inc. only | Angleton, S. (F-4 FB-AZ) | Brazoria | 1 | 16.3K | 150K | Jun 2005 – Aug 2026 |
| Timber Creek Unit O-13-17089 | Brammer Petroleum, Inc. only | Timber Creek (2070 Strawn) | Cooke | 6 | 15.5K | 32 | by Jan 1993 – Aug 2026 |
| Knox, M. L. O-6-13606 | Cross Timbers Operating Company only | Whelan (Travis Peak Prorated) | Harrison | 1 | 14.5K | 256K | Jun 1996 – Jan 2000 |
| State Houston Co. Timber Co. -E- O-10-22865 | Last Mile Production, LLC only | Brooklaw (Clear Fork, Lower) | Pecos | 4 | 12.3K | 60.4K | by Jan 1993 – Mar 2011 |
| Timberwolf UL O-10-45694 | Chandler Oil & Gas, LLC only | Wolfbone (Trend Area) | Pecos | 1 | 12.2K | 23K | Oct 2014 – Mar 2021 |
| Holy Comforter Unit G-3-173198 | Timberwolf Energy, Inc. only | Angleton, South (F-9 Block D) | Brazoria | 1 | 12K | 665K | May 1999 – Sep 2007 |