| Stone-Magnolia G-4-209356 | Dewbre Petroleum Corporation | Paso Real (8600) | 1 | 1.44K | 649K | May 2005 – Apr 2013 |
| Stone-Enterprise G-4-205725 | Dewbre Petroleum Corporation | Paso Real (7350) | 1 | 1.42K | 1.04M | Oct 2004 – Apr 2013 |
| Yturria G-4-251046 | Blakenergy Operating, LLC | La Sara (No. 19 Sand, Upper) | 1 | 1.42K | 82.8K | Sep 2008 – Mar 2009 |
| Todd, Robert S. Trust O-4-12543 | Slimhole Engineering Co., Inc. | La Sara (No. 21 Sand) | 1 | 1.42K | 105 | Jan 1996 – Mar 1996 |
| Yturria, Frank D., et Al G-4-169786 | Cody Energy LLC | Raymondville (F-33) | 1 | 1.32K | 430K | Aug 1998 – Oct 2000 |
| Yturria "A" G-4-228100 | Sue-Ann Operating, L.C. | Raymondville (Consolidated) | 1 | 1.31K | 457K | Apr 2007 – Feb 2010 |
| Yturria O-4-13413 | Texas Oil and Gas Operating, LLC | La Sara (5500) | 1 | 1.23K | 39.1K | Sep 2006 – Sep 2014 |
| Yturria, Frank D. et Al G-4-179903 | Cody Energy LLC | Raymondville (F- 1) | 1 | 1.14K | 93.4K | Jun 2000 – Aug 2001 |
| Rio Farms "a" Gas Unit G-4-244677 | OXY USA Inc. | Hargill (Frio Cons.) | 1 | 1.12K | 39.7K | Aug 2008 – Feb 2013 |
| Yturria G-4-295146 | Texas Oil and Gas Operating, LLC | La Sara, E. (7890) | 1 | 1.06K | 15.5K | Jul 2023 – Oct 2025 |
| Palousek G-4-248095 | Suemaur Expl. & Prod., LLC | Chile Vieja (Palousek) | 1 | 1.02K | 137K | Jan 2009 – May 2014 |
| Schmelzer Unit O-4-13367 | Hughes, Dan A. Company, L.P. | El Sauz Ranch (6970) | 1 | 1.01K | 427 | Apr 2006 – Sep 2006 |
| Yturria, H. G-4-208772 | Apollo Petro Fuels LLC | Raymondville (Consolidated) | 1 | 982 | 230K | Apr 2004 – Dec 2017 |
| Yturria G-4-243884 | Blakenergy Operating, LLC | La Sara, NW. (3000) | 1 | 981 | 120K | Nov 2007 – Feb 2009 |
| Vaughan, Ben G-4-228949 | XTO Energy Inc. | Tordilla (M-50) | 1 | 981 | 57.3K | Jul 2007 – Sep 2011 |
| Yturria, F. D. G-4-186014 | White Oak Operating Company LLC | Raymondville (12300) | 1 | 935 | 1.12M | Mar 2002 – Aug 2013 |
| Yturria G-4-274864 | Texas Oil and Gas Operating, LLC | La Sal Vieja (Frio Cons) | 1 | 899 | 39.7K | Aug 2013 – Dec 2014 |
| Schmelzer Unit G-4-233958 | Hughes, Dan A. Company, L.P. | El Sauz Ranch (6960) | 1 | 894 | 78.5K | Mar 2007 – Oct 2007 |
| Yturria, Frank D. et Al G-4-175574 | Cody Energy LLC | Raymondville (F-21) | 1 | 866 | 53.4K | Oct 1999 – Dec 1999 |
| Yturria, Frank D., et Al G-4-169787 | Esenjay Exploration, Inc | Raymondville (F-27) | 1 | 829 | 167K | Aug 1998 – Nov 1998 |
| Yturria "A" G-4-254228 | Sue-Ann Operating, L.C. | Raymondville (Consolidated) | 1 | 823 | 216K | May 2007 – Sep 2008 |
| Thomas Unit G-4-289807 | Dewbre Petroleum Corporation | Riggan (8900) | 1 | 808 | 29.1K | Aug 2020 – Aug 2026 |
| Yturria Cattle Co. O-4-9952 | Ffa Petroleum Services, Inc. | La Sara, N. (No. 30 Sd.) | 1 | 762 | 20 | by Jan 1993 – Nov 1994 |
| Yturria , Frank D. et Al G-4-169754 | Esenjay Exploration, Inc | Raymondville (F-28) | 1 | 735 | 170K | Sep 1998 – May 1999 |
| Yturria G-4-263282 | MK Operating Company LLC | La Sara, N. (No. 40-A) | 1 | 691 | 57.3K | Sep 2011 – Jun 2012 |
| Yturria, H. G-4-180673 | Cody Energy LLC | Raymondville (F-30) | 1 | 684 | 142K | Apr 2000 – Feb 2001 |
| Coleman Unit G-4-268965 | Dewbre Petroleum Corporation | Riggan (9775) | 1 | 679 | 45.2K | Oct 2012 – Jul 2013 |
| Gas Unit a / Zone 3 G-4-141529 | Apache Corporation | La Sal Vieja (3 8350-8466) | 1 | 674 | 358K | by Jan 1993 – Apr 2000 |
| Humphrey G. U. G-4-146288 | Hanson Production Company | La Sal Vieja (Deep 14,600) | 1 | 672 | 14.3K | Jul 1993 – Apr 1994 |
| Yturria G-4-268816 | MK Operating Company LLC | Wildcat | 1 | 668 | 735 | Jul 2014 – May 2015 |
| Yturria, Frank D. G-4-183684 | Cody Energy LLC | Raymondville (Consolidated) | 1 | 631 | 212K | May 2001 – Sep 2006 |
| Yturria, Frank D. G-4-191787 | Cody Energy LLC | Raymondville (Consolidated) | 1 | 586 | 137K | Oct 2002 – Jan 2004 |
| Parham G-4-226188 | Cimarron Engineering, LLC | Willamar (4500) | 1 | 586 | 87.6K | Jun 2006 – Nov 2009 |
| Yturria O-4-13892 | Texas Oil and Gas Operating, LLC | La Sara (31-a Sand) | 1 | 584 | 0 | Jul 2014 – Jan 2015 |
| Gas Unit "C" Zone 7 G-4-144384 | MW Petroleum Corporation | La Sal Vieja (7) | 1 | 578 | 71.5K | by Jan 1993 – Jun 1993 |
| Kleberg, R J Jr TR Stillman G-4-257654 | EOG Resources, Inc. | Tordilla (Deep Cons.) | 1 | 571 | 3.27M | Aug 2010 – Nov 2019 |
| Cantu O-4-14057 | Cal-Tex Exploratn & Prod Co LLC | La Sara (No. 10 Sand) | 1 | 542 | 0 | Jul 2017 – May 2018 |
| Parham, Ellie G-4-180288 | Modern Exploration, Inc. | Willamar (E-7 6300 Sand) | 1 | 538 | 109K | Dec 2000 – Feb 2003 |
| Willamar West Miocene Unit G-4-147718 | Citation Oil & Gas Corp. | Willamar, West (Miocene 4500) | 1 | 524 | 169K | Jan 1994 – Jan 1996 |
| Parham, Ellie G-4-148591 | Modern Exploration, Inc. | King Ranch, W. (Miocene 6000) | 1 | 516 | 48.1K | Dec 1993 – Aug 1995 |
| Yturria, Frank D. G-4-191742 | Cody Energy LLC | Raymondville (Consolidated) | 1 | 514 | 279K | Sep 2002 – Sep 2005 |
| Geis, Harvey, Unit G-4-11228 | Mitchell Energy Corporation | La Sal Vieja (8 9680-9935) | 1 | 507 | 178K | by Jan 1993 – Sep 1999 |
| Willamar West Miocene Unit O-4-11808 | Citation Oil & Gas Corp. | Willamar, West (Miocene 6300) | 3 | 497 | 71.9K | by Jan 1993 – Jan 1994 |
| Yturria G-4-295732 | Texas Oil and Gas Operating, LLC | La Sara (No. 40 Sand) | 1 | 488 | 7.88K | Aug 2023 – Oct 2025 |
| Yturria O-4-14180 | Texas Oil and Gas Operating, LLC | La Sara (No. 41 Sand) | 1 | 477 | 0 | Jan 2022 – Mar 2025 |
| Yturria, Frank D. G-4-182644 | Cody Energy LLC | Raymondville (F-34-U) | 1 | 471 | 46.5K | Sep 2000 – Jan 2001 |
| Sauz Ranch Mulatos Pasture G-4-162349 | Shoco Production LLC | Willamar, West(miocene 6250) | 1 | 468 | 1.09M | Nov 1996 – Nov 2013 |
| Kleberg, R J Jr TR Stillman G-4-274943 | EOG Resources, Inc. | Tordilla (Deep Cons.) | 1 | 465 | 1.55M | Feb 2014 – Jun 2017 |
| Yturria RR O-4-13590 | Texas Oil and Gas Operating, LLC | La Sara (No. 19 Sand, Upper) | 1 | 433 | 3.07K | Apr 2009 – Aug 2011 |
| De McKinney, F. S. O-4-8202 | Janex Oil Co., Inc. | Willamar, S W (Frio 8200) | 1 | 380 | 7 | by Jan 1993 – Jul 1993 |