| Kleberg, R J Jr TR Stillman G-4-226463 | | Tordilla (Deep Cons.) | 1 | 3.69K | 636K | Mar 2007 – Nov 2019 |
| Yturria O-4-13863 | Texas Oil and Gas Operating, LLC | La Sara, E. (7940) | 1 | 3.64K | 0 | Mar 2013 – May 2019 |
| Thomas, M. G. et Al G-4-270120 | XTO Energy Inc. | Tordilla-NC (L-90E) | 1 | 3.55K | 146K | Feb 2013 – Sep 2016 |
| Yturria, Frank D. G-4-195031 | EP Energy E&P Company, L.P. | Raymondville, W (L-70) | 1 | 3.54K | 1.25M | Jan 2003 – Oct 2009 |
| Kleberg, R J Jr TR Stillman G-4-275749 | EOG Resources, Inc. | Tordilla (Deep Cons.) | 1 | 3.5K | 1.8M | May 2014 – Nov 2017 |
| Yturria O-4-13540 | Blakenergy Operating, LLC | La Sara (No. 41 Sand) | 1 | 3.48K | 36.3K | Jan 2009 – Jul 2009 |
| Cantu G-4-248330 | Dewbre Petroleum Corporation | Chess (9000) | 1 | 3.41K | 339K | Mar 2009 – Sep 2014 |
| Schmelzer Unit O-4-13469 | Hughes, Dan A. Company, L.P. | El Sauz Ranch (6960) | 1 | 3.36K | 11.3K | Jan 2008 – Feb 2016 |
| Cox, B. F. G-4-255059 | Wagner Oil Company | La Sal Vieja (8 and 9 Frio) | 1 | 3.28K | 562K | Jan 2010 – Aug 2025 |
| EP Garcia Ranch G-4-247041 | XTO Energy Inc. | Areto (Frio 13,300) | 1 | 3.08K | 595K | Dec 2008 – Jun 2012 |
| Thomas Unit G-4-291039 | Dewbre Petroleum Corporation | Riggan (8900) | 1 | 3.02K | 88.9K | Jul 2021 – Mar 2023 |
| Yturria, Frank D. G-4-179927 | Cody Energy LLC | Raymondville (Consolidated) | 1 | 2.99K | 497K | Jul 2000 – Dec 2003 |
| Yturria, H. G-4-183401 | Cody Energy LLC | Raymondville (Consolidated) | 1 | 2.9K | 503K | May 2001 – Jun 2006 |
| Gas Unit a Zone 1 G-4-204762 | Apache Corporation | La Sal Vieja | 1 | 2.89K | 36.8K | Jul 2004 – Oct 2005 |
| Butler, D. Y. G-4-116126 | Mitchell Energy Corporation | La Sal Vieja, E. (13600 Frio) | 1 | 2.83K | 44.9K | by Jan 1993 – Mar 1999 |
| Yturria, Frank D. G-4-195271 | EP Energy E&P Company, L.P. | Raymondville, W (L-70) | 1 | 2.83K | 713K | May 2003 – Oct 2009 |
| Yturria, H. G-4-224145 | Apollo Petro Fuels LLC | Raymondville (Consolidated) | 1 | 2.76K | 799K | Dec 2006 – Jul 2020 |
| Kleberg, R J Jr TR Stillman G-4-262759 | EOG Resources, Inc. | Tordilla (Deep Cons.) | 1 | 2.66K | 333K | Sep 2011 – Jun 2019 |
| Geis, H. G-4-102626 | Mitchell Energy Corporation | La Sal Vieja (8 9680-9935) | 1 | 2.55K | 159K | by Jan 1993 – Jan 1999 |
| Willamar West Miocene Unit G-4-152572 | Citation Oil & Gas Corp. | Willamar, West (Miocene 6300) | 1 | 2.53K | 787K | Dec 1994 – Apr 2000 |
| La Sal Vieja G/U. G-4-130324 | Apache Corporation | La Sal Vieja (Frio 11,000) | 1 | 2.4K | 398K | by Jan 1993 – Jun 1999 |
| Yturria O-4-13589 | Bruington Operating, L.L.C. | Raymondville (Consolidated) | 1 | 2.4K | 0 | Feb 2010 – Mar 2013 |
| Yturria, Frank D. G-4-188847 | Cody Energy LLC | Raymondville (Consolidated) | 1 | 2.34K | 463K | Apr 2002 – Feb 2006 |
| Willamar Community "E" O-4-13101 | Citation Oil & Gas Corp. | Willamar, West (Miocene 6350) | 1 | 2.29K | 3.06K | Jul 2002 – Nov 2002 |
| Yturria, H. G-4-229620 | Apollo Petro Fuels LLC | Raymondville (Consolidated) | 1 | 2.27K | 549K | Feb 2007 – Oct 2020 |
| Kleberg, R J Jr TR Stillman G-4-179573 | EOG Resources, Inc. | Tordilla (Deep Cons.) | 1 | 2.14K | 2.3M | Sep 2000 – Mar 2020 |
| Yturria, H. G-4-200769 | Apollo Petro Fuels LLC | Raymondville (Consolidated) | 1 | 2.13K | 115K | Mar 2004 – Oct 2006 |
| Yturria L & C Co. NCT-2 O-4-7967 | Petro-Hunt Corporation | Raymondville (A-10) | 2 | 2.11K | 5.82K | by Jan 1993 – Nov 1995 |
| Coleman Unit G-4-270844 | Dewbre Petroleum Corporation | Riggan (8600) | 1 | 1.99K | 142K | Oct 2013 – Jul 2014 |
| Geis, Harvey G-4-193094 | Apache Corporation | La Sal Vieja | 1 | 1.96K | 92.7K | May 2002 – Jan 2003 |
| Yturria, Frank D. G-4-197088 | El Paso Production Oil & Gas Co. | Raymondville (13500) | 1 | 1.95K | 339K | May 2003 – Oct 2003 |
| Yturria , Frank D. et Al G-4-169753 | Esenjay Exploration, Inc | Raymondville (F-20) | 1 | 1.95K | 981K | Jun 1998 – Aug 1999 |
| Yturria, Frank D. et Al G-4-175803 | Cody Energy LLC | Raymondville (F-20) | 1 | 1.93K | 544K | Dec 1999 – Jun 2001 |
| Kleberg, R J Jr TR Stillman G-4-151688 | EOG Resources, Inc. | Tordilla (Deep Cons.) | 1 | 1.9K | 4.21M | Nov 1994 – Jun 2022 |
| Gas Unit a Zone 1 G-4-217893 | Proline Energy Resources Inc | La Sal Vieja (1 7688-7827) | 1 | 1.89K | 477K | Mar 2006 – Oct 2018 |
| Geis, Harvey O-4-12960 | Apache Corporation | La Sal Vieja | 1 | 1.82K | 7.75K | Jun 2000 – Feb 2003 |
| Gas Unit a Zone 6 G-4-142782 | MW Petroleum Corporation | La Sal Vieja (6 8774-9165) | 1 | 1.81K | 645K | by Jan 1993 – Oct 1997 |
| Kleberg, R J Jr TR Stillman G-4-255487 | EOG Resources, Inc. | Tordilla (Deep Cons.) | 1 | 1.8K | 577K | Feb 2010 – Jun 2024 |
| Yturria G-4-212791 | Risco la Sara Operations, LLC | La Sara (No. 19 Sand) | 1 | 1.73K | 321K | Jul 2005 – Feb 2009 |
| Yturria Cattle Co O-4-13008 | Maynard Oil Co. | La Sara (No. 8 Sand) | 1 | 1.68K | 99.1K | Feb 2001 – Jan 2002 |
| Corbett G-4-229879 | El Paso E & P Company, L. P. | La Sara, NE (6675) | 1 | 1.68K | 48.8K | Jul 2007 – Nov 2008 |
| Yturria RR O-4-13852 | Texas Oil and Gas Operating, LLC | La Sara (3830) | 3 | 1.59K | 0 | Jun 2014 – Mar 2015 |
| Yturria L&C Co. NCT-2 G-4-126935 | Apollo Petro Fuels LLC | Raymondville (Consolidated) | 1 | 1.58K | 1.09M | by Jan 1993 – Dec 2024 |
| Kleberg, R J Jr TR Stillman G-4-262313 | EOG Resources, Inc. | Tordilla (L-27) | 1 | 1.55K | 158K | Jul 2011 – May 2012 |
| Cox, B. F. Unit G-4-108199 | Wagner Oil Company | La Sal Vieja (8 and 9 Frio) | 1 | 1.5K | 40.5K | by Jan 1993 – Sep 2002 |
| Yturria, H. G-4-201305 | Apollo Petro Fuels LLC | Raymondville (Consolidated) | 1 | 1.5K | 485K | Mar 2004 – Oct 2021 |
| Bucy O-4-13289 | Citation Oil & Gas Corp. | Willamar | 1 | 1.49K | 3.57K | Jan 2005 – Jan 2007 |
| Parham, Ellie "A" O-4-11729 | API Operating Co. | King Ranch, W. (Miocene 6000) | 1 | 1.47K | 11 | by Jan 1993 – Nov 1993 |
| Cavazos, Nicolas G-4-152929 | Citation Oil & Gas Corp. | Willamar (5150) | 1 | 1.46K | 521K | Nov 1994 – Sep 1998 |
| Vaughan, Ben G-4-247321 | XTO Energy Inc. | Tordilla (M-50) | 1 | 1.46K | 56K | Sep 2007 – Apr 2012 |