| Perryman Trust G-3-209600 | Ballard Exploration Company,inc. only | Fairchilds (Yegua Nod Mex 1 SD) | Liberty | 1 | 332K | 3.58M | Jan 2005 – Jul 2018 |
| BP Fairfield G-3-258715 | Cimarex Energy Co. only | Perl (Yegua Middle EY) | Jefferson | 1 | 279K | 3.31M | Jul 2010 – Dec 2012 |
| Fair E Unit G-13-273675 | EOG Resources, Inc. only | Newark, East (Barnett Shale) | Cooke | 1 | 117K | 507K | Apr 2012 – Jan 2016 |
| Fairway/James Lime/Unit G-6-181540 | Highmark Energy Operating, LLC only | Fairway (James Lime) | Anderson | 1 | 112K | 9.15M | Mar 2001 – Apr 2026 |
| Fairfax G-14-264991 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 109K | 2.11M | Nov 2011 – Apr 2026 |
| Fairway/James Lime/Unit G-6-226134 | Highmark Energy Operating, LLC only | Fairway (James Lime) | Anderson | 1 | 87.8K | 12.2M | Feb 2007 – Apr 2026 |
| Lemonville G-3-258482 | Fairways Exploration & Prod, LLC only | Bobcat Run (Yegua) | Orange | 1 | 86.2K | 4.49M | Jun 2010 – Jan 2013 |
| Fair D Unit G-13-273432 | EOG Resources, Inc. only | Newark, East (Barnett Shale) | Cooke | 1 | 81.3K | 222K | May 2012 – Jan 2016 |
| Fairfax G-14-262493 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 63.1K | 2.07M | May 2011 – Apr 2026 |
| Fairway/James Lime/Unit G-6-163444 | Hunt Oil Company only | Fairway (James Lime) | Henderson | 1 | 48.9K | 756K | May 1997 – Jun 2001 |
| Fairway/James Lime/Unit G-6-208429 | Highmark Energy Operating, LLC only | Fairway (James Lime) | Anderson | 1 | 45.1K | 2.49M | Feb 2005 – Apr 2025 |
| Mayfair la Brisa G-4-174939 | Merit Energy Company only | Rincon (Vicksburg Cons.) | Starr | 1 | 38.9K | 2.42M | Oct 1999 – Jun 2017 |
| Moore, Vernon M. G-6-91963 | Fair Oil, Ltd. only | Manziel, NE. (Hill) | Wood | 1 | 36.3K | 1.29M | Jan 1993 – Jan 2021 |
| Pollard-Johnson Unit G-6-141006 | Fair Oil, LC only | Manziel, E. (Gloyd) | Wood | 1 | 35.2K | 1.33M | Jan 1993 – Nov 1999 |
| State Tract 335-L G-3-140332 | Fairways Spec. Sales & Serv Inc only | Brazos Block 335-L (7000) | Brazos-LB | 1 | 34K | 1.64M | Jan 1993 – Jul 1999 |
| State Tract 629-L, SE/4 G-2-101908 | Fairways Spec. Sales & Serv Inc only | Block 630-L (4950) | Matgrda IS-LB | 1 | 33K | 172K | Jan 1993 – Feb 1995 |
| Fairfax G-14-267219 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 32.2K | 634K | Mar 2012 – Apr 2026 |
| Fairway/James Lime/Unit G-6-209848 | Highmark Energy Operating, LLC only | Fairway (James Lime) | Henderson | 1 | 28.9K | 2.32M | Mar 2005 – Apr 2026 |
| Fair, D. P. GU G-6-277268 | Craton Operating LLC only | Overton (Cotton Valley Sand) | Rusk | 1 | 25.3K | 1.87M | Mar 2015 – Apr 2026 |
| Mayfair la Brisa G-4-186069 | Merit Energy Company only | Rincon (Vicksburg Cons.) | Starr | 1 | 25.3K | 1.85M | Apr 2001 – Apr 2026 |
| Fairway/James Lime/Unit G-6-181718 | Highmark Energy Operating, LLC only | Fairway (James Lime) | Henderson | 1 | 24.6K | 2.45M | Mar 2001 – Jun 2025 |
| Fairway/James Lime/Unit G-6-208183 | Highmark Energy Operating, LLC only | Fairway (James Lime) | Henderson | 1 | 24.2K | 1.81M | Feb 2005 – Apr 2026 |
| Fairway/James Lime/Unit G-6-221092 | Highmark Energy Operating, LLC only | Fairway (James Lime) | Henderson | 1 | 21.5K | 1.69M | Jul 2005 – Apr 2026 |
| Faircloth Estate G-6-100101 | Fortune Resources LLC only | Oak Hill (Cotton Valley) | Rusk | 1 | 20K | 2.08M | Jan 1993 – Mar 2026 |
| Fairway/James Lime/Unit G-6-208186 | Highmark Energy Operating, LLC only | Fairway (James Lime) | Henderson | 1 | 17.9K | 1.79M | Feb 2005 – Aug 2022 |
| Fairway/James Lime/Unit G-6-210040 | Highmark Energy Operating, LLC only | Fairway (James Lime) | Henderson | 1 | 17.6K | 3.64M | Apr 2005 – Apr 2024 |
| Fairway/James Lime/Unit G-6-208188 | Highmark Energy Operating, LLC only | Fairway (James Lime) | Anderson | 1 | 17.3K | 1.18M | Feb 2005 – Apr 2026 |
| Barnhart-Mayfair Unit G-3-136657 | Verdun Oil & Gas LLC only | Clay, N.E. (Austin Chalk, Gas) | Burleson | 1 | 16.7K | 1.08M | Jan 1993 – Apr 2026 |
| Fairway/James Lime/Unit G-6-207887 | Highmark Energy Operating, LLC only | Fairway (James Lime) | Henderson | 1 | 16.5K | 2.11M | Feb 2005 – Nov 2022 |
| Fairway/James Lime/Unit G-6-190106 | Highmark Energy Operating, LLC only | Fairway (James Lime) | Henderson | 1 | 15K | 1.59M | Jul 2002 – Oct 2024 |
| Faircloth Estate G-6-132429 | Fortune Resources LLC only | Oak Hill (Cotton Valley) | Rusk | 1 | 14.6K | 1.76M | Jan 1993 – Mar 2026 |
| Fairway/James Lime/Unit G-6-208181 | Highmark Energy Operating, LLC only | Fairway (James Lime) | Henderson | 1 | 14.4K | 2.19M | Feb 2005 – May 2023 |
| Fairway/James Lime/Unit G-6-181717 | Highmark Energy Operating, LLC only | Fairway (James Lime) | Henderson | 1 | 14.2K | 1.85M | Mar 2001 – Apr 2026 |
| Faircloth Estate G-6-108942 | Palmer Petroleum Inc. only | Kilgore, SW. (Travis Peak) | Rusk | 1 | 13.8K | 768K | Jan 1993 – Jul 2013 |
| Fairway/James Lime/Unit G-6-198177 | Highmark Energy Operating, LLC only | Fairway (James Lime) | Anderson | 1 | 13.8K | 2.44M | Oct 2003 – Apr 2026 |
| Fairman B Unit G-13-264888 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Denton | 1 | 12.5K | 570K | Oct 2011 – Apr 2026 |
| Fairway/James Lime/Unit G-6-181735 | Highmark Energy Operating, LLC only | Fairway (James Lime) | Henderson | 1 | 12.4K | 3.13M | Mar 2001 – Aug 2024 |
| Lucas, Tom Jack Gas Unit G-6-207699 | Fair Oil, Ltd. only | Douglass, W. (Travis Peak) | Nacogdoches | 1 | 12.2K | 1.48M | Dec 2004 – Apr 2016 |
| State Tract 310-L G-3-70284 | Fairways Spec. Sales & Serv Inc only | Galveston Block 310-L (Mio) | Galveston-LB | 1 | 11.5K | 1.06M | Jan 1993 – Dec 2002 |
| Fairfax G-14-235668 | Mewbourne Oil Company only | Canadian, SW. (Granite Wash) | Hemphill | 1 | 11.5K | 488K | Mar 2008 – Apr 2026 |
| Briscoe G-13-189124 | Fairington, Inc. only | Newark, East (Barnett Shale) | Denton | 1 | 11.1K | 568K | Apr 2002 – Apr 2026 |
| Manziel GU #2 G-6-147795 | Fair Oil, Ltd. only | Manziel, SE. (Gloyd) | Wood | 1 | 10.6K | 570K | Nov 1993 – Oct 2011 |
| Faircloth Estate G-6-142960 | Fortune Resources LLC only | Oak Hill (Cotton Valley) | Rusk | 1 | 10.3K | 2.13M | Jan 1993 – Mar 2026 |
| Fairman Unit G-13-208244 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Denton | 1 | 10.1K | 488K | Mar 2005 – Apr 2026 |
| Chatten, Susie G-6-138373 | Fair Oil, Ltd. only | Green Fox (Pettit 6200) | Marion | 1 | 9.95K | 1.24M | Jan 1993 – Nov 2008 |
| Mayfair la Brisa G-4-181250 | Texas Independent Explor Ltd. only | Rincon (Vicksburg Cons.) | Starr | 1 | 9.93K | 844K | Nov 2000 – Oct 2022 |
| Fairway /James Lime/ Unit G-6-280481 | Highmark Energy Operating, LLC only | Fairway (James Lime) | Anderson | 1 | 9.8K | 1.58M | Mar 2015 – Apr 2026 |
| Briscoe G-13-190650 | Fairington, Inc. only | Newark, East (Barnett Shale) | Denton | 1 | 9.6K | 345K | Jul 2002 – Apr 2026 |
| Fairway/James Lime/Unit G-6-210041 | Highmark Energy Operating, LLC only | Fairway (James Lime) | Henderson | 1 | 9.38K | 1.69M | Mar 2005 – Apr 2026 |
| Fair G-14-156739 | Complete Oil & Gas Services, LLC only | Lipscomb (Cleveland) | Lipscomb | 1 | 9.23K | 833K | Nov 1995 – Feb 2018 |