| Wiesehan-Walker Gas Unit G-4-251319 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 13.9K | 1.74M | Aug 2009 – Aug 2026 |
| Petty, O. S. G-1-114012 | White Oak Operating Company LLC only | Catarina, SW. (San Miguel-Gas) | Webb | 1 | 13.9K | 515K | by Jan 1993 – Feb 2016 |
| Ghinaudo, M. et Al G-3-186169 | Hunt, Hassie Exploration Company only | Franks (Schenck Upper) | Galveston | 1 | 13.8K | 516K | Oct 2001 – Feb 2003 |
| Petty, O. S. A-2 G-1-138087 | White Oak Operating Company LLC only | Catarina, SW (San Miguel,oil) | Webb | 1 | 13.8K | 369K | by Jan 1993 – Feb 2016 |
| Amoco Production Company Fee O-3-20693 | Kriti Exploration, Inc. only | Beaumont, NW (Anomalina) | Jefferson | 2 | 13.8K | 343K | by Jan 1993 – Jan 1999 |
| Adams, Nina Est. O-4-11337 | R.C.I. Energy only | Magnolia City, North (4900) | Jim Wells | 1 | 13.8K | 9.52K | by Jan 1993 – May 2006 |
| Haass, Jeanne C. O-1-5518 | Tampke Service Co. only | Taylor-Ina | Medina | 9 | 13.8K | 14 | by Jan 1993 – Aug 2026 |
| Garcia 1 G-4-151264 | Mestena Operating, L.L.C. only | Alta Mesa, East (Corvina) | Brooks | 1 | 13.7K | 2.14M | Aug 1994 – Jun 2009 |
| Brann, Regina G-4-178102 | Merit Energy Company only | Jeffress (Vicksburg S) | Hidalgo | 1 | 13.7K | 3.74M | Aug 2000 – Aug 2026 |
| Papaya G-3-249831 | Proline Energy Resources Inc only | Coconut (Anomalina 4) | Matagorda | 1 | 13.6K | 439K | May 2009 – Feb 2023 |
| McAllen Fieldwide Unit G-4-163493 | Fina Oil & Chemical Company only | McAllen, West (Card) | Hidalgo | 1 | 13.6K | 1.85M | Mar 1996 – Dec 1998 |
| E. Riethmeyer Gas Unit G-4-234045 | STX Operating Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 13.6K | 3.86M | Oct 2007 – Aug 2026 |
| Buchholz, William R. G-4-188112 | Transpacific Energy, LLC only | Reina (Basal Queen City) | Starr | 1 | 13.4K | 951K | Aug 2001 – Aug 2026 |
| Jesuit Gas Unit G-4-254907 | Finaly Resources LLC only | Jesuit (Rivera) | Kleberg | 1 | 13.3K | 384K | Jan 2010 – Jun 2026 |
| Mullinax G-13-147651 | Wise Production Company only | Hunter (Congl.) | Jack | 1 | 13.3K | 587K | Dec 1993 – Oct 2016 |
| Boston Texas Land & Trust G-4-248428 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 13.2K | 1.29M | Mar 2009 – Aug 2026 |
| Wiesehan-Walker Gas Unit G-4-242075 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 13.2K | 1.34M | Aug 2008 – Aug 2026 |
| Fee "A" O-1-13218 | First Rock, Inc. only | Marcelina Creek (Austin Chalk) | Wilson | 1 | 13.1K | 3.8K | by Jan 1993 – Feb 1997 |
| Sievers, Gus O-2-2938 | Finaly Resources LLC only | Holly, East (Massive) | De Witt | 2 | 13.1K | 105 | by Jan 1993 – Mar 2002 |
| Winans, Andrew O-1-10791 | Calfas Oil, LLC only | Somerset | Atascosa | 9 | 13K | 18 | by Jan 1993 – Feb 2021 |
| Boston Texas Land & Trust G-4-265948 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 13K | 1.01M | Apr 2012 – Aug 2026 |
| Boston Texas Land & Trust G-4-159253 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 13K | 1.19M | May 1996 – Aug 2026 |
| Slick, T. B. Estate G-4-178392 | Totalfinaelf E&P USA Inc only | El Ebanito (Vicksburg 11) | Starr | 1 | 13K | 678K | Jan 2000 – Jan 2001 |
| Peacock O-1-12820 | Dewbre Petroleum Corporation only | Marcelina Creek (Austin Chalk) | Wilson | 1 | 13K | 17 | by Jan 1993 – Apr 1998 |
| Boston Texas Land & Trust G-4-275518 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 12.9K | 3.33M | Dec 2014 – Apr 2025 |
| Walter Co. G-3-165200 | Ballard Exploration Company,inc. only | China (Yegua EY-2) | Jefferson | 1 | 12.9K | 534K | Aug 1997 – Nov 1999 |
| Fina-Conoco Fee G-4-154813 | Fina Oil & Chemical Company only | Frost (Vicksburg 7300) | Starr | 1 | 12.9K | 228K | Dec 1994 – Sep 1997 |
| Brainard 62 G-14-279054 | Presidio Petroleum LLC only | Horsecreek N. E. (Cleveland) | Lipscomb | 1 | 12.8K | 117K | Oct 2015 – Aug 2026 |
| Petty, O.S. O-1-14386 | Petropoint Energy Operating, LLC only | Catarina, SW (San Miguel,oil) | Webb | 1 | 12.7K | 67.5K | Oct 2002 – Jul 2014 |
| Davis, W.J. G-4-85219 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 12.7K | 3.21M | by Jan 1993 – Aug 2026 |
| Btlt G-4-239558 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Starr | 1 | 12.7K | 868K | May 2008 – Aug 2026 |
| Jones O-10-28909 | Citation Oil & Gas Corp. only | Pinal Dome (Cherry Canyon) | Loving | 2 | 12.7K | 39.4K | by Jan 1993 – Mar 1997 |
| Parr Kibbe Molina G-4-208805 | Welderxp Ltd. only | Parr Sunray (Yegua Consolidated) | Duval | 1 | 12.7K | 711K | Mar 2005 – Oct 2020 |
| Briscoe Cochina West Ranch G-1-272409 | Anadarko E&P Onshore LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 12.6K | 9.03K | Aug 2014 – Oct 2014 |
| Raabe O-1-13143 | Sedco Resources Inc only | Marcelina Creek (Austin Chalk) | Wilson | 1 | 12.6K | 128 | by Jan 1993 – Aug 2004 |
| Weimers, Alfred B. -A- O-1-5795 | Calfas Cattle & Oil, LLC only | Taylor-Ina | Medina | 25 | 12.5K | 14 | by Jan 1993 – Aug 2026 |
| Rogers, C. C. Unit -1- O-1-3398 | Texas Secondary Oil Corporation only | Taylor-Ina | Medina | 19 | 12.5K | 15 | by Jan 1993 – Aug 2026 |
| Graham, J. M. et Al G-3-147225 | Magnum Producing, LP only | Four Corners (Anomalina) | Brazoria | 1 | 12.5K | 576K | Aug 1993 – Jun 2001 |
| Chapa, David G-4-135322 | Totalfinaelf E&P USA Inc only | Tabasco (Vicksburg 8600) | Hidalgo | 1 | 12.5K | 979K | by Jan 1993 – Nov 2002 |
| Slick, T. B. Estate G-4-161278 | Fina Oil & Chemical Company only | El Ebanito (Vicksburg 6) | Starr | 1 | 12.4K | 344K | May 1996 – May 1998 |
| Chapa, David G-4-160424 | Fina Oil & Chemical Company only | Tabasco (T) | Hidalgo | 1 | 12.3K | 235K | May 1996 – Dec 1998 |
| Messina Hof O-3-25005 | Halcon Operating Co., Inc. only | Giddings (Buda) | Brazos | 1 | 12.3K | 28.6K | Jul 2007 – Jun 2014 |
| McAllen Fieldwide Unit G-4-150565 | Fina Oil & Chemical Company only | McAllen (9400) | Hidalgo | 1 | 12.2K | 345K | Feb 1994 – Apr 1998 |
| Edwina Swan O-13-32125 | Eagleridge Operating, LLC only | KRS (Marble Falls) | Jack | 1 | 12.1K | 436K | Dec 2011 – Aug 2020 |
| Ferdinand O-1-18061 | Warwick-Artemis, LLC only | First Shot (Austin Chalk) | Wilson | 1 | 12.1K | 38.1K | May 2014 – Oct 2020 |
| Weinstrom Petroleum O-1-5385 | Weinstrom Petroleum only | Taylor-Ina | Medina | 2 | 12.1K | 21 | by Jan 1993 – Aug 2026 |
| Eschenburg, R.L. II O-1-12600 | First Rock, Inc. only | Marcelina Creek (Austin Chalk) | Wilson | 2 | 12K | 148 | May 1997 – Mar 2001 |
| Broussard & Hebert "D" G-3-201769 | Sabco Operating Company only | La Belle (Marginulina 8500) | Jefferson | 1 | 12K | 967K | May 2004 – Aug 2006 |
| Postema O-3-20725 | Hondo Operating, Inc. only | Angelina, N. (Frio 10500) | Chambers | 1 | 12K | 25K | by Jan 1993 – Apr 1997 |
| Neinast O-3-24250 | WCS Oil & Gas Corporation only | Giddings (Austin Chalk-3) | Washington | 1 | 12K | 484K | Dec 2001 – Mar 2014 |