| Killam O-4-12920 | Mountain V Texas, LLC only | Dove Rustler (Chernosky) | Duval | 6 | 482K | 248K | Oct 1999 – Jul 2026 |
| Martin, Albert, Trustee O-4-7768 | Wallis Energy, Inc. only | Bruni, SE. (Queen City) | Webb | 4 | 78.2K | 49.4K | by Jan 1993 – Jun 2026 |
| Vera Trust G-4-222410 | Eliteenergyholdings LLC only | Santa Cruz, N. (Yegua 8800) | Duval | 1 | 73.6K | 2.35M | Oct 2006 – Jan 2025 |
| Vera Trust G-4-225848 | Eliteenergyholdings LLC only | Santa Cruz, N. (Yegua 8800) | Duval | 1 | 62.8K | 2.3M | Mar 2007 – Oct 2023 |
| Duval Ranch, Sec. #100, a/C 2 O-4-2112 | Dewbre, Jerry C., Trustee only | Piedre Lumbre | Duval | 6 | 57.2K | 21 | by Jan 1993 – Mar 2015 |
| Duval State Section 64 O-4-2876 | Dewbre, Jerry C., Trustee only | Seventy-Six, West | Duval | 4 | 52.9K | 21 | by Jan 1993 – Nov 2018 |
| Dinn Mineral Trust O-4-13803 | Aurora Resources Corporation only | Orlee | Duval | 4 | 41.7K | 0 | Aug 2013 – Dec 2024 |
| Carl, Wm. F. Trustee et al "A" O-4-10016 | Tigel Standard Oil LLC only | Montemayor (5500) | Duval | 4 | 23.3K | 58.1K | by Jan 1993 – Dec 2020 |
| Vera Trust G-4-231273 | Eliteenergyholdings LLC only | Santa Cruz, N. (Yegua 8800) | Duval | 1 | 17.5K | 631K | Sep 2007 – Feb 2025 |
| Carl, William E. G-4-145944 | Nordan Trust, The only | Carrl Ranch (2ND Yegua Sand) | Duval | 1 | 10.1K | 417K | by Jan 1993 – Mar 1997 |
| Barker, Paulette Trust O-4-11431 | Green Exploration Company only | Vaello, SW. (Tedlie) | Duval | 1 | 2.07K | 3 | May 1993 – Jan 2011 |
| Dcrc Section 88 O-4-13558 | Dewbre, Jerry C., Trustee only | Arnold-Mulle (Mirando, UP) | Duval | 1 | 1.57K | 0 | Apr 2009 – May 2014 |
| Dinn Mineral Trust G-4-199020 | Hughes, Dan A. Company, L.P. only | Dinn, Deep (Wilcox 12,900) | Duval | 1 | 1.47K | 3.57M | Dec 2003 – Mar 2014 |
| Duval Ranch, Sec. #100, a/C 1 O-4-2111 | Dewbre, Jerry C., Trustee only | Piedre Lumbre | Duval | 2 | 1.28K | 0 | Jan 2011 – Mar 2015 |
| Frost National Bank Trustee "A" G-4-199220 | Thorp Petroleum Corporation only | Rancho Solo (Wilcox) | Duval | 1 | 447 | 518K | Jul 2003 – Apr 2004 |
| Lopez -B- O-4-2036 | Gonzalez, Elia G. Mineral Trust only | Orlee | Duval | 1 | 200 | 15 | Feb 1993 – Jun 1993 |
| Weil -B-, Survey 131 O-4-8824 | Villalon, J. Antonio, Trustee only | Sarnosa, West | Duval | 2 | 105 | 5 | by Jan 1993 – Jun 1993 |
| Canales O-4-11797 | Villalon, J. Antonio, Trustee only | Canales (First Pettus) | Duval | 1 | 83 | 4 | by Jan 1993 – May 1993 |
| Frost National Bank & Trust G-4-100828 | Shidler, Mark L., Inc. only | Rancho Solo (Bruni) | Duval | 1 | 60 | 961K | by Jan 1993 – Dec 2020 |
| Vera Trust G-4-226914 | Chandler Oil & Gas, LLC only | Santa Cruz, N. (Yegua 8800) | Duval | 1 | 44 | 2.78K | Oct 2022 – Jun 2023 |
| Lopez Mineral Trust G-4-251311 | Paleo Oil Company LLC only | Dinn Intermediate (Hinnant) | Duval | 1 | 40 | 4.21M | Mar 2009 – Oct 2019 |
| Lopez Mineral Trust G-4-196591 | Paleo Oil Company LLC only | Dinn Intermediate (Hinnant) | Duval | 1 | 34 | 1.53M | Aug 2003 – Jul 2026 |
| Lopez Mineral Trust G-4-198140 | Paleo Oil Company LLC only | Dinn Intermediate (Hinnant) | Duval | 1 | 22 | 167K | Jun 2003 – Sep 2020 |
| Longoria Mineral Trust, et Al G-4-170449 | Coastal Oil & Gas Corporation only | Thompsonville, NE. (11,300) | Duval | 1 | 20 | 99.3K | Nov 1997 – Nov 1998 |
| Dcrc Section 88 O-4-13692 | Dewbre, Jerry C., Trustee only | Casa Blanca, West | Duval | 1 | 12 | 0 | Feb 2012 – Feb 2012 |
| Lopez Mineral Trust G-4-194554 | EOG Resources, Inc. only | Dinn, Deep (Wilcox 14,900) | Duval | 1 | 4 | 8.01M | Jan 2003 – Mar 2011 |
| Frost National Bank & Trust G-4-95442 | Bowman, Fred Inc. only | Rancho Solo (Wilcox) | Duval | 1 | 3 | 2.24K | by Jan 1993 – Jan 1993 |
| Lopez Mineral Trust G-4-265738 | Paleo Oil Company LLC only | Dinn, Deep (11200) | Duval | 1 | 2 | 30K | Jan 2013 – Oct 2018 |
| Duval Ranch Sec. 58 G-4-60057 | Speed, F. Michael, Trustee only | Lundell (1380) | Duval | 1 | 0 | 0 | — |
| Archer Parr Trust G-4-103192 | Moffett, Lillian Parr, Est Of only | Thomas Lockhart (2600) | Duval | 1 | 0 | 0 | — |
| DCR 260 G-4-71878 | Speed, F. Michael, Trustee only | Lundell (1400) | Duval | 1 | 0 | 0 | — |
| DCR 260 G-4-77596 | Speed, F. Michael, Trustee only | Lundell (Hockley 1950) | Duval | 1 | 0 | 0 | — |
| Carl, William G-4-110859 | Nordan Trust, The only | Los Rubios (2ND Yegua) | Duval | 1 | 0 | 0 | — |
| Frost National Bank & Trust G-4-115769 | Bowman, Fred Inc. only | Rancho Solo (Wilcox) | Duval | 1 | 0 | 0 | — |
| Duval County Ranch Co. G-4-132502 | Speed, F. Michael, Trustee only | Selby (Catahoula 500) | Duval | 1 | 0 | 0 | — |
| Lopez "A" G-4-149678 | Gonzalez, Elia G. Mineral Trust only | Cole (1700) | Duval | 1 | 0 | 0 | — |
| Lopez "A" G-4-155450 | Gonzalez, Elia G. Mineral Trust only | Cole (1700) | Duval | 1 | 0 | 0 | — |
| Lopez Mineral Trust G-4-172963 | EOG Resources, Inc. only | Dinn, Deep (Wilcox 13600) | Duval | 1 | 0 | 3.14M | May 1999 – Apr 2004 |
| Lopez Mineral Trust G-4-187079 | Newfield Exploration Company only | Dinn, Deep (11200) | Duval | 1 | 0 | 27.7K | Jun 2001 – Apr 2004 |
| Lopez Mineral Trust G-4-187971 | EOG Resources, Inc. only | Dinn, Deep (Wilcox 14,900) | Duval | 1 | 0 | 24.4M | Feb 2002 – Sep 2007 |
| Lopez Mineral Trust G-4-202727 | EOG Resources, Inc. only | Dinn Intermediate (Hinnant) | Duval | 1 | 0 | 227K | Jun 2004 – Nov 2004 |
| Dinn Mineral Trust G-4-204102 | Metano Energy, LP only | Wildcat | Duval | 1 | 0 | 0 | — |
| Dinn Mineral Trust G-4-208823 | Hughes, Dan A. Company, L.P. only | Dinn, Deep (11200) | Duval | 1 | 0 | 10.6K | Feb 2005 – Sep 2006 |
| Gruy, Joseph Trustee -D- O-4-1161 | Teesco only | Gruy | Duval | 7 | 0 | 0 | — |
| Gruy, Joseph Trustee -E- O-4-1162 | Teesco only | Gruy | Duval | 2 | 0 | 0 | — |
| DCR 260 O-4-7202 | Speed, F. Michael, Trustee only | Lundell (Queen City #4) | Duval | 1 | 0 | 0 | — |
| Duval Ranch Section 62 O-4-12060 | Dewbre, Jerry C., Trustee only | Wildcat | Duval | 1 | 0 | 0 | — |
| Duval County Ranch Co. Sect. 292 O-4-13106 | Dewbre, Jerry C., Trustee only | Seventy-Six, West | Duval | 1 | 0 | 0 | — |
| Dcrc Section 88 O-4-13343 | Dewbre, Jerry C., Trustee only | Wildcat | Duval | 1 | 0 | 0 | — |
| Dcrc Section 88 O-4-13388 | Dewbre, Jerry C., Trustee only | Arnold-Mulle (Mirando, UP) | Duval | 1 | 0 | 0 | — |