| Driscoll, Robert O-4-5421 | Hilcorp Energy Company only | Conoco Driscoll | Duval | 75 | 2.19M | 1.78M | Jan 1993 – Apr 2026 |
| Driscoll, Clara O-4-5486 | Urban Oil & Gas Group, LLC only | Agua Dulce (7050) | Nueces | 2 | 163K | 370K | Jan 1993 – Apr 2026 |
| Taylor, R.E. O-4-11608 | Situs Oil & Gas, LLC only | Clara Driscoll, South (5000) | Nueces | 4 | 100K | 1.29K | Jan 1993 – Nov 2011 |
| Flinn, F.E. O-4-11325 | Dewbre Petroleum Corporation only | Clara Driscoll, S. (5040) | Nueces | 2 | 86.3K | 21 | Jan 1993 – Jun 2014 |
| Bernsen O-4-12991 | Hugoton Operating Company, Inc. only | Clara Driscoll, South (6500) | Nueces | 1 | 78.6K | 101K | Feb 2001 – May 2025 |
| Driscoll, Clara O-4-5276 | Chapco, Inc. only | Piedras Pintas Dome | Duval | 1 | 60K | 38 | Mar 1993 – Jan 2026 |
| Driscoll Foundation O-4-11800 | Home Petroleum Corp. only | Bennett Ranch (3RD Cook Mtn.) | Duval | 4 | 57K | 75.6K | Jan 1993 – Feb 2026 |
| Driscoll Foundation "B" O-4-11979 | Vision Oil and Gas LLC only | Bennett Ranch (3RD Cook Mtn.) | Duval | 3 | 50.2K | 12K | Jan 1993 – Jul 2025 |
| Johnson, Ellen O-4-5387 | Stephens & Johnson Operating Co. only | Clara Driscoll, S. (Seg A) | Nueces | 6 | 44.9K | 19 | Jan 1993 – Oct 2004 |
| Driscoll, Clara O-4-7632 | Urban Oil & Gas Group, LLC only | Agua Dulce (7020) | Nueces | 3 | 42.9K | 205K | Jan 1993 – Jun 2014 |
| Blacknall, Sally O-4-9163 | Western Gulf Oil & Gas, LLC only | Clara Driscoll (6600) | Nueces | 1 | 40K | 3.05K | Jan 1993 – Feb 2005 |
| Taylor, R.E. O-4-12148 | Situs Oil & Gas, LLC only | Clara Driscoll, S. (3875) | Nueces | 1 | 39.6K | 7.8K | Jan 1993 – May 2001 |
| Nelson-Chenault Unit O-1-13262 | Driscoll S.W.D. Inc. only | Peach Creek (Austin Chalk) | Gonzales | 1 | 39.3K | 41.9K | Jan 1993 – Oct 1995 |
| Driscoll Foundation O-4-14263 | Paloma Operating, LLC only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 39.2K | 20.6K | Jun 2025 – Apr 2026 |
| Martin O-4-13345 | Sun Exploration, Inc. only | Clara Driscoll, S.E. (6710) | Nueces | 1 | 38.6K | 18.8K | Dec 2005 – Jan 2026 |
| Taylor, R. E. NCT-1 O-4-504 | Western Gulf Oil & Gas, LLC only | Clara Driscoll, South | Nueces | 4 | 34.3K | 21 | Jan 1993 – Sep 2013 |
| Flinn, H. E. O-4-8538 | Continental Trend Resources, Inc only | Clara Driscoll, S. (5040) | Nueces | 1 | 33.4K | 3.52K | Jan 1993 – Jan 2011 |
| Barlow O-4-13869 | KRC Operating, LLC only | Clara Driscoll, South (6500) | Nueces | 1 | 31.1K | 415 | Nov 2013 – Jan 2022 |
| Russ & Daimwood O-4-10246 | Situs Oil & Gas, LLC only | Clara Driscoll, S. (3800 Oil) | Nueces | 1 | 31K | 786 | Jan 1993 – Apr 2026 |
| Driscoll Foundation O-4-11055 | Galindo Brothers, Inc. only | Rosalia-Mag (Loma Novia) | Duval | 2 | 30.5K | 98 | Jan 1993 – May 2017 |
| Flinn, F. E. - B O-4-11870 | Western Gulf Oil & Gas, LLC only | Clara Driscoll, S. (4650 Sand) | Nueces | 1 | 30K | 809 | Jan 1993 – Apr 2021 |
| Rackley-Rutland O-4-10495 | Dewbre Petroleum Corporation only | Clara Driscoll, S. (5040) | Nueces | 1 | 29.5K | 7.12K | Jan 1993 – Mar 2014 |
| Heath, Artie Belle O-4-5527 | Hugoton Operating Company, Inc. only | Clara Driscoll, S. (Sinton Sand) | Nueces | 3 | 26K | 1 | Aug 1994 – May 2010 |
| Driscoll Ranch G-4-196960 | Cinco Natural Resources Corp. only | Strake, North Deep (Wil-Car P) | Duval | 1 | 25.7K | 2.24M | May 2003 – Jan 2016 |
| Martin, Joe O-4-10631 | B D Production Co., Inc. only | Clara Driscoll, South | Nueces | 1 | 25.5K | 115 | Jan 1993 – Sep 2011 |
| Driscoll "N" O-4-8193 | Green Exploration Company only | Stets, (Govt. Wells) | Duval | 4 | 23.7K | 21 | Jan 1993 – Mar 2013 |
| Camden-Driscoll Ranch G-4-179566 | Cinco Natural Resources Corp. only | Strake Deep (Carrizo P-2) | Duval | 1 | 23.7K | 1.9M | Oct 2000 – May 2003 |
| Driscoll, Robert O-4-12773 | Hilcorp Energy Company only | Conoco Driscoll (Ufgw-Nsegb) | Duval | 1 | 23.7K | 21.1K | May 1998 – Aug 2017 |
| Heath, Artie Bell O-4-7656 | Marquee Corporation only | Clara Driscoll, S. (5600 FB A) | Nueces | 1 | 22.5K | 20 | Jan 1993 – Dec 2001 |
| Dugger G-4-226747 | KRC Operating, LLC only | Clara Driscoll, South (5865) | Nueces | 1 | 21K | 23.6K | Sep 2006 – Jan 2017 |
| Driscoll, Clara O-4-4720 | Urban Oil & Gas Group, LLC only | Agua Dulce (7250 Sd.) | Nueces | 3 | 20.9K | 37K | Mar 1994 – Aug 1999 |
| Martin, Joe W. O-4-10311 | Beaver Oil & Gas Operating, LLC only | Clara Driscoll, S. (5065) | Nueces | 1 | 20.7K | 62 | Jan 1993 – Apr 1998 |
| Driscoll Foundation O-4-9605 | L.T.D. Explorations Inc. only | Rosalia, SW. (Govt. Wells, Lo.) | Duval | 1 | 20.4K | 222 | Jan 1993 – Dec 2008 |
| Driscoll Foundation O-4-11826 | Vision Oil and Gas LLC only | Bennett Ranch (3RD Cook Mtn.) | Duval | 1 | 17.8K | 6.72K | Jan 1993 – Jul 2025 |
| Flinn O-4-13785 | Hugoton Operating Company, Inc. only | Clara Driscoll, South (5900) | Nueces | 1 | 15.6K | 88.7K | Aug 2013 – Mar 2025 |
| Viper Dugger O-4-14265 | Viper S.W.D., LLC only | Clara Driscoll, SE. (Frio) | Nueces | 1 | 14.4K | 0 | Jun 2025 – Apr 2026 |
| Viper Dugger O-4-14252 | Viper S.W.D., LLC only | Clara Driscoll, SE (5420) | Nueces | 1 | 11.7K | 0 | Sep 2024 – Apr 2026 |
| Russ & Daimwood O-4-13539 | Western Gulf Oil & Gas, LLC only | Clara Driscoll, S. (3875) | Nueces | 1 | 11K | 1.41K | Jan 2009 – Jun 2019 |
| Driscoll Estate O-4-11407 | Limestone Oil & Gas Co. only | Saxet (Frio 6670) | Nueces | 2 | 10.8K | 2.96K | Jan 1993 – Jan 1994 |
| Dugger O-4-14062 | KRC Operating, LLC only | Clara Driscoll, South (5865) | Nueces | 1 | 9.86K | 0 | Jan 2017 – Jan 2024 |
| Dugger, L. M. O-4-9358 | Dewbre Petroleum Corporation only | Clara Driscoll,se (6300) | Nueces | 1 | 9.46K | 21 | Jan 1993 – Nov 2001 |
| Barlow O-4-14200 | JC Bear Operating LLC only | Clara Driscoll, South (5865) | Nueces | 1 | 9K | 0 | Apr 2021 – Mar 2026 |
| Driscoll, Clara Fnd. Tr. 1-A O-4-11343 | Cummins & Walker Oil Co., Inc. only | Clara Driscoll | Nueces | 1 | 8.98K | 84 | Jan 1993 – Jun 1999 |
| Taylor, R.E. NCT O-4-13566 | Situs Oil & Gas, LLC only | Clara Driscoll, South (5000) | Nueces | 1 | 7.9K | 0 | Nov 2010 – Nov 2011 |
| Heath G-4-182638 | Hugoton Operating Company, Inc. only | Clara Driscoll, S. (Vicks, Con.) | Nueces | 1 | 7.86K | 364K | Jan 2001 – May 2025 |
| Driscoll Foundation O-4-13975 | Ellsworth, H. P. O&G Properties only | Wildcat | Duval | 1 | 7.71K | 0 | Jun 2013 – Apr 2014 |
| Dare G-4-189545 | Continental Trend Resources, Inc only | Clara Driscoll, S. (Vicks, Con.) | Nueces | 1 | 7.31K | 877K | Mar 2002 – Apr 2006 |
| Yeager, Agnes J. O-4-11661 | Fox, Hewitt B., Inc. only | Clara Driscoll, SE. (Frio 5700) | Nueces | 1 | 7.23K | 19 | Jan 1993 – May 1998 |
| Driscoll Estate O-4-11094 | Alco Drlg. Co. only | Gruy, North (Daugherty Sand) | Duval | 4 | 7.2K | 87 | Jan 1993 – Jun 2001 |
| Driscoll, Robert G-4-178361 | Hilcorp Energy Company only | Conoco Driscoll | Duval | 1 | 6.9K | 580K | Jul 2000 – Feb 2025 |