| Barrow 01 G-2-266958 | Marathon Oil EF LLC only | De Witt (Eagle Ford Shale) | De Witt | 1 | 363K | 1.88M | Aug 2011 – Feb 2023 |
| Barrow 01 G-2-269397 | Marathon Oil EF LLC only | De Witt (Eagle Ford Shale) | De Witt | 1 | 261K | 1.62M | Apr 2013 – Mar 2024 |
| Barrow 01 G-2-276235 | Marathon Oil EF LLC only | De Witt (Eagle Ford Shale) | De Witt | 1 | 214K | 1.42M | Oct 2014 – Apr 2026 |
| Barrow 01 G-2-276230 | Marathon Oil EF LLC only | De Witt (Eagle Ford Shale) | De Witt | 1 | 207K | 1.36M | Oct 2014 – Apr 2026 |
| Barrow 01 G-2-270125 | Marathon Oil EF LLC only | De Witt (Eagle Ford Shale) | De Witt | 1 | 206K | 1.33M | Apr 2013 – Jan 2026 |
| Barrow 01 G-2-276448 | Marathon Oil EF LLC only | De Witt (Eagle Ford Shale) | De Witt | 1 | 193K | 1.23M | Oct 2014 – Apr 2026 |
| Barrera G-3-146859 | Rosewood Resources, Inc. only | Giddings (Austin Chalk, Gas) | Brazos | 1 | 179K | 1.53M | Aug 1993 – Feb 2001 |
| Barrow 01 G-2-269567 | Marathon Oil EF LLC only | De Witt (Eagle Ford Shale) | De Witt | 1 | 178K | 1.15M | Apr 2013 – Dec 2022 |
| Barrocito, B.M. G-4-246992 | Mountain V Texas, LLC only | Stirling (Wilcox Consolidated) | Zapata | 1 | 175K | 9.01M | Jan 2009 – Apr 2026 |
| Barrow 01 G-2-276335 | Marathon Oil EF LLC only | De Witt (Eagle Ford Shale) | De Witt | 1 | 138K | 779K | Oct 2014 – Jan 2023 |
| Barr G-3-278702 | E2 Operating LLC only | Fort Trinidad (Glen Rose, Upper) | Madison | 1 | 123K | 408K | Jun 2014 – Feb 2026 |
| Barrera Unit G-4-228698 | Hilcorp Energy Company only | McMoran (8960) | Hidalgo | 1 | 111K | 5.52M | Jun 2007 – Apr 2026 |
| Chevron-Thunderbird #2 Gas Unit G-4-174010 | Single Barrel Oil and Gas LLC only | T-Bird (Queen City) | Jim Hogg | 1 | 109K | 4.1M | Jul 1999 – Apr 2026 |
| Ibarra, Antonio, et Al G-4-182245 | Faulconer Energy, LLC only | Agua Prieta (Queen City) | Duval | 1 | 87.3K | 4.81M | Mar 2001 – Apr 2026 |
| Chevron-Thunderbird #7 Gas Unit G-4-180274 | Single Barrel Oil and Gas LLC only | T-Bird (Queen City) | Jim Hogg | 1 | 86.8K | 3.15M | Nov 2000 – Apr 2026 |
| Barrera G-4-160157 | Samedan Oil Corporation only | McNeil Ranch (Yegua 1) | Duval | 1 | 80.9K | 2.26M | Oct 1996 – Jun 2001 |
| Barrett G-3-217297 | Heisey Ventures, Inc. only | Hardin, South (Wilcox 12700) | Liberty | 1 | 72.2K | 4.69M | Nov 2005 – Aug 2011 |
| Chevron-Thunderbird #4 Gas Unit G-4-181379 | Single Barrel Oil and Gas LLC only | T-Bird (Queen City) | Jim Hogg | 1 | 70.9K | 2.11M | Feb 2001 – Apr 2026 |
| Barrocito, B. M. G-4-249417 | Mountain V Texas, LLC only | Stirling (Wilcox Consolidated) | Zapata | 1 | 68.4K | 2.01M | Mar 2009 – Apr 2026 |
| Barrera, F. - State G-4-191858 | Merit Energy Company only | La Copita (Vicksburg Cons.) | Starr | 1 | 61.6K | 2.82M | Nov 2002 – Apr 2026 |
| Chevron-Thunderbird #1 Gas Unit G-4-173300 | Single Barrel Oil and Gas LLC only | T-Bird (Queen City) | Jim Hogg | 1 | 61.1K | 2.22M | Apr 1999 – Apr 2026 |
| Barrera Unit G-4-224426 | Hilcorp Energy Company only | McMoran (8960) | Hidalgo | 1 | 58.3K | 3.74M | Jan 2007 – Sep 2025 |
| Barrera G-4-238122 | Merit Energy Company only | McMoran (Vicksburg 9270) | Hidalgo | 1 | 56.6K | 4.28M | Apr 2008 – Apr 2026 |
| Barracuda Unit G-3-169624 | Progenies Operating LLC only | Giddings (North Edwards) | Fayette | 1 | 54.2K | 2.66M | Mar 1999 – Mar 2015 |
| Thunderbird No. 4 Gas Unit G-4-183371 | Single Barrel Oil and Gas LLC only | T-Bird (Queen City) | Jim Hogg | 1 | 53.7K | 1.13M | May 2001 – Jan 2006 |
| Barrera G-4-247588 | Merit Energy Company only | McMoran (Vicksburg 9270) | Hidalgo | 1 | 52.4K | 3.67M | Aug 2008 – Apr 2026 |
| Barrow Ranch G-3-204043 | Kerr-McGee Oil & Gas Onshore LP only | Barrow Ranch (Hack A) | Chambers | 1 | 52K | 1.64M | Aug 2004 – Aug 2005 |
| Barr Unit G-13-274301 | EOG Resources, Inc. only | Newark, East (Barnett Shale) | Montague | 1 | 49.1K | 648K | Mar 2014 – Apr 2026 |
| Chevron-Thunderbird #3 Gas Unit G-4-175830 | Single Barrel Oil and Gas LLC only | T-Bird (Queen City) | Jim Hogg | 1 | 48.5K | 1.76M | Jan 2000 – Apr 2026 |
| Barrocito, B. M. G-4-254022 | Mountain V Texas, LLC only | Stirling (Wilcox Consolidated) | Zapata | 1 | 45.1K | 3.15M | Dec 2009 – Apr 2026 |
| Barrera, F. - State G-4-56420 | Merit Energy Company only | La Copita (Vicksburg Cons.) | Starr | 1 | 43.1K | 3.9M | Jan 1993 – Apr 2026 |
| Barr Unit G-13-274309 | EOG Resources, Inc. only | Newark, East (Barnett Shale) | Montague | 1 | 42.4K | 486K | Mar 2014 – Apr 2026 |
| Barrocito, B.M. G-4-237452 | Mountain V Texas, LLC only | Stirling (Wilcox Consolidated) | Zapata | 1 | 41.9K | 2.23M | Apr 2008 – Apr 2026 |
| Ramirez, M. & M. Gas Unit G-4-164806 | Arete Operating Company III, LLC only | Barrera (Lobo 6) | Webb | 1 | 41.7K | 5.2M | Sep 1997 – Apr 2026 |
| Barrera, F. - State G-4-87686 | Merit Energy Company only | La Copita (Vicksburg Cons.) | Starr | 1 | 41.1K | 2.39M | Jan 1993 – Apr 2026 |
| Gutierrez G-1-277786 | Single Barrel Oil and Gas LLC only | Sun T S H (Olmos) | La Salle | 1 | 39.9K | 676K | Jan 2013 – Mar 2026 |
| Barrera Unit G-4-122205 | Hilcorp Energy Company only | McMoran (8960) | Hidalgo | 1 | 36.2K | 1.85M | Jan 1993 – Apr 2026 |
| Barrera Unit G-4-187411 | Hilcorp Energy Company only | El Staggs (7330) | Hidalgo | 1 | 35.8K | 3.2M | Feb 2000 – May 2016 |
| Barrocito, B. M. G-4-247788 | Mountain V Texas, LLC only | Stirling (Wilcox Consolidated) | Zapata | 1 | 35K | 2.83M | Feb 2009 – Apr 2026 |
| Barrocito, B. M. G-4-255207 | Mountain V Texas, LLC only | Stirling (Wilcox Consolidated) | Zapata | 1 | 31.5K | 1.43M | Mar 2010 – Apr 2026 |
| Miller, Eva Mae G-5-221081 | Barrow-Shaver Resources Co. only | Red Oak (Dexter) | Leon | 1 | 29.3K | 2.09M | Aug 2006 – Apr 2026 |
| Miller #1, Eva Mae G-5-221080 | Barrow-Shaver Resources Co. only | Red Oak (Dexter) | Leon | 1 | 28.6K | 2.13M | Jun 2006 – Apr 2026 |
| Wright-Barrera GU G-4-242851 | Mountain V Texas, LLC only | Pok - a - Dot (8600) | Zapata | 1 | 28.2K | 1.48M | Aug 2008 – Apr 2026 |
| Barrera Unit G-4-242559 | Hilcorp Energy Company only | McMoran (8960) | Hidalgo | 1 | 27.6K | 922K | Aug 2008 – Jul 2024 |
| Smith, M. L. M. G-2-111795 | Apex Energy, Inc. only | Anna Barre (-J-) | De Witt | 1 | 27.5K | 1.92M | Jan 1993 – Mar 2014 |
| Barrera G-4-241691 | Merit Energy Company only | McMoran (Vicksburg 9270) | Hidalgo | 1 | 27.2K | 2.95M | Jul 2008 – Apr 2026 |
| Barrera, Pedro G-4-46487 | Hilcorp Energy Company only | McMoran (Vicksburg 9270) | Hidalgo | 1 | 26.7K | 1.63M | Jan 1993 – Apr 2026 |
| Barrocito, B. M. G-4-243921 | Mountain V Texas, LLC only | Stirling (Wilcox Consolidated) | Zapata | 1 | 26.4K | 2.43M | Nov 2008 – Apr 2026 |
| Barrera, C., Dr. G-4-245407 | Hilcorp Energy Company only | El Staggs (7330) | Hidalgo | 1 | 25.9K | 1.2M | Sep 2008 – Mar 2026 |
| Heil G-5-221073 | Barrow-Shaver Resources Co. only | Red Oak (Dexter) | Leon | 1 | 24.5K | 1.25M | Jul 2006 – Apr 2026 |