| Langham Unit G-3-281180 | Cooper Operating LLC only | Argo-Hawk (10400 Sand) | Jefferson | 1 | 107K | 699K | May 2016 – Aug 2026 |
| Kaup Unit G-2-240638 | Zachry Exploration, LLC only | Largo Navidad (6560) | Jackson | 1 | 50.9K | 6.82M | Sep 2008 – Sep 2024 |
| Iles G-3-211619 | Milagro Exploration, LLC only | Argo-Hawk (10400 Sand) | Jefferson | 1 | 45.5K | 348K | Jul 2005 – Nov 2006 |
| Bearden G-6-115456 | Largo Oil Company only | Minden (Travis Peak Cons.) | Rusk | 1 | 35.9K | 283K | by Jan 1993 – Jan 2019 |
| South Marshall St Wells Fargo GU G-4-200503 | Mountain V Texas, LLC only | Tiffany (Wilcox Carrizo) | Webb | 1 | 30K | 2.56M | Feb 2004 – Aug 2026 |
| Margo Est. G-4-173341 | Edge Petroleum Oper. Co., Inc. only | Garcia (2ND Rincon) | Starr | 1 | 27.9K | 2.81M | Feb 1999 – Oct 2002 |
| Margo G-4-193128 | Newgulf Petroleum, LLC only | Arroyo Grande (Queen City) | Starr | 1 | 27.7K | 265K | Jan 2003 – Jul 2012 |
| Thompson, J.A. G-4-129089 | Bargo Energy Company only | Riverside (4910) | Nueces | 1 | 25.9K | 243K | by Jan 1993 – Jun 1996 |
| Margo, R. E. Heirs G-4-235511 | El Reno Energy, LLC only | Braulia, East (Vicksburg Cons.) | Starr | 1 | 25.4K | 1.31M | Feb 2008 – Mar 2016 |
| Margo/Pena G-4-121118 | Mortimer Production Company only | Arroyo Los Olmos (Yegua 25) | Starr | 1 | 22.6K | 2.84M | by Jan 1993 – Aug 2026 |
| South Marshall State-Wells Fargo G-4-219522 | Mountain V Texas, LLC only | Tiffany (Wilcox Carrizo) | Webb | 1 | 22.5K | 3.2M | May 2006 – Aug 2026 |
| South Marshall St Wells Fargo GU G-4-229579 | Mountain V Texas, LLC only | Tiffany (Wilcox Carrizo) | Webb | 1 | 20K | 693K | Apr 2007 – Jan 2015 |
| Margo/Pena G-4-179853 | Mortimer Production Company only | Arroyo Los Olmos (Guerra Sand) | Starr | 1 | 18.9K | 1.1M | Oct 2000 – Aug 2026 |
| Langham Unit G-3-281876 | Cooper Operating LLC only | Argo-Hawk (10400 Sand) | Jefferson | 1 | 18.7K | 127K | Feb 2017 – Aug 2026 |
| South Marshall St Wells Fargo GU G-4-208780 | Mountain V Texas, LLC only | Tiffany (Wilcox Carrizo) | Webb | 1 | 18K | 1.04M | Mar 2005 – Dec 2019 |
| South Marshall St Wells Fargo GU G-4-201337 | Mountain V Texas, LLC only | Tiffany (Wilcox Carrizo) | Webb | 1 | 15.6K | 2.02M | Apr 2004 – Apr 2017 |
| Margo, R. E. Heirs G-4-243590 | El Reno Energy, LLC only | Braulia, East (Vicksburg Cons.) | Starr | 1 | 15.2K | 2.59M | Apr 2008 – Nov 2013 |
| Margo, R. E. Heirs G-4-242006 | El Reno Energy, LLC only | Braulia, East (Vicksburg Cons.) | Starr | 1 | 10.8K | 1.19M | Aug 2008 – Oct 2015 |
| Bentsen, L. M. G-4-159665 | Fargo Oil & Gas, LLC only | Ranchero (Vicksburg 9280) | Starr | 1 | 10.5K | 718K | Jun 1996 – Nov 2013 |
| Margo G-4-181357 | Newgulf Petroleum, LLC only | Arroyo Grande (Queen City) | Starr | 1 | 9.31K | 91K | Mar 2001 – Jul 2002 |
| Haisley, Waldo E. G-4-131593 | Bargo Energy Company only | Candy B. (Anderson Sand 9500) | San Patricio | 1 | 8.32K | 200K | by Jan 1993 – Mar 1996 |
| North Marshall St Wells Fargo GU G-4-245847 | Mountain V Texas, LLC only | Tiffany (Wilcox Carrizo) | Webb | 1 | 8.07K | 2.65M | Sep 2007 – Mar 2021 |
| Cates, D. G-6-231634 | Largo Oil Company only | Brachfield, S.E. (Cotton Valley) | Rusk | 1 | 7.79K | 687K | Aug 2007 – Aug 2026 |
| Margot G-3-214251 | Matador Production Company only | Hartburg, S. (Lower Hackberry) | Orange | 1 | 7.73K | 317K | Jan 2006 – Oct 2006 |
| Margo Estate G-4-178371 | Edge Petroleum Oper. Co., Inc. only | Garcia (Vicksburg-Flores 5500) | Starr | 1 | 7.5K | 1.69M | Jan 2000 – Apr 2002 |
| Alexander, Cuba Gas Unit G-6-217113 | Largo Oil Company only | Minden (Cotton Valley Cons.) | Rusk | 1 | 7.48K | 840K | Dec 2005 – Aug 2026 |
| Escobar Unit G-4-160489 | Fargo Oil & Gas, LLC only | Capricorn (Queen City A) | Starr | 1 | 7.46K | 1.28M | Feb 1996 – May 2010 |
| Margo/Pena G-4-200161 | Mortimer Production Company only | Arroyo Los Olmos (Middle Yegua) | Starr | 1 | 7.4K | 233K | Feb 2004 – Nov 2012 |
| Long Unit G-2-220049 | Tri-C Resources, LLC only | Largo Navidad (6560) | Jackson | 1 | 7.18K | 485K | Feb 2006 – Oct 2009 |
| Margo R.E. Estate G-4-221286 | Starr Operating, LLC only | Arroyo Grande (Queen City) | Starr | 1 | 6.94K | 247K | Jun 2006 – Aug 2026 |
| Spellings, Hattie Gas Unit #1 G-6-89043 | Largo Oil Company only | Danville (TP-CV Cons.) | Rusk | 1 | 6.35K | 584K | by Jan 1993 – Feb 2026 |
| Cagle-Harris G-6-219381 | Largo Oil Company only | Minden (Cotton Valley Cons.) | Rusk | 1 | 6.15K | 360K | Feb 2006 – Aug 2026 |
| Alexander, Cuba Gas Unit G-6-218728 | Largo Oil Company only | Minden (Cotton Valley Cons.) | Rusk | 1 | 6.13K | 827K | Feb 2006 – Aug 2026 |
| Margo, R.E. Heirs G-4-246237 | El Reno Energy, LLC only | Braulia, East (Vicksburg Cons.) | Starr | 1 | 5.68K | 201K | Aug 2008 – Aug 2015 |
| Robinson-Sooner South G-2-247334 | Zachry Exploration, LLC only | Largo Navidad (6560) | Jackson | 1 | 5.32K | 388K | Sep 2008 – Mar 2017 |
| Alexander, Cuba Gas Unit G-6-221901 | Largo Oil Company only | Minden (Cotton Valley Cons.) | Rusk | 1 | 5.28K | 989K | Jul 2006 – Aug 2026 |
| Gary, Winnie Lee et al Unit G-6-16490 | Largo Oil Company only | Pone (Gloyd) | Rusk | 1 | 5.22K | 1.13M | by Jan 1993 – Aug 2026 |
| S Marshall State-Wells Fargo GU G-4-223352 | Mountain V Texas, LLC only | Tiffany (Wilcox Carrizo) | Webb | 1 | 5.04K | 1.27M | Sep 2006 – Mar 2024 |
| Cates, Dan G-6-233309 | Largo Oil Company only | Minden (Travis Peak Cons.) | Rusk | 1 | 4.75K | 520K | Oct 2007 – Aug 2026 |
| Margo "A" G-4-186800 | Starr Operating, LLC only | Arroyo Grande, W. (Cook Mt.) | Starr | 1 | 4.64K | 1.02M | Jan 2002 – Aug 2026 |
| South Marshall St Wells Fargo GU G-4-208683 | Mountain V Texas, LLC only | Tiffany (Wilcox Carrizo) | Webb | 1 | 4.6K | 1.47M | Mar 2005 – Aug 2026 |
| Bentsen , L.M. G-4-157826 | Fargo Oil & Gas, LLC only | Ranchero (Vicksburg 9800) | Starr | 1 | 4.41K | 106K | Jan 1996 – Oct 2013 |
| South Marshall State Wells Fargo G-4-226099 | Mountain V Texas, LLC only | Tiffany (Wilcox Carrizo) | Webb | 1 | 4.13K | 1.28M | Mar 2007 – Apr 2015 |
| Bentsen, L. M. G-4-160211 | Fargo Oil & Gas, LLC only | Ranchero (Vicksburg 9800) | Starr | 1 | 4.01K | 280K | Aug 1996 – Sep 2013 |
| Alexander, Cuba Gas Unit G-6-221840 | Largo Oil Company only | Minden (Cotton Valley Cons.) | Rusk | 1 | 3.97K | 766K | Jun 2006 – Aug 2026 |
| Margo/Pena G-4-133683 | Mortimer Production Company only | Arroyo Los Olmos (Middle Yegua) | Starr | 1 | 3.77K | 61K | by Jan 1993 – Dec 1998 |
| North Marshall St Wells Fargo GU G-4-226089 | Mountain V Texas, LLC only | Tiffany (Wilcox Carrizo) | Webb | 1 | 3.61K | 1.26M | Jan 2007 – Jun 2015 |
| Sears G-6-114673 | Largo Oil Company only | Minden (Cotton Valley Cons.) | Rusk | 1 | 3.6K | 229K | by Jan 1993 – Aug 2026 |
| Summers Unit G-6-82336 | Largo Oil Company only | Sym-Jac, West (Hosston) | Cherokee | 1 | 3.56K | 325K | by Jan 1993 – Aug 2026 |
| Margo "A" G-4-199599 | Starr Operating, LLC only | Arroyo Grande, W. (Cook Mt.) | Starr | 1 | 3.46K | 122K | Jan 2004 – Feb 2016 |