| Elliff, J. S. Etal O-4-13012 | Urban Oil & Gas Group, LLC only | Agua Dulce (Consolidated Frio) | Nueces | 5 | 148K | 1.01M | Mar 2001 – Jul 2026 |
| Herrman-Liska Unit O-4-13433 | Britanco, L.L.C. only | Agua Dulce (Consolidated Frio) | Nueces | 2 | 90.4K | 327K | Apr 2007 – Jul 2026 |
| Rivers "A" O-4-13225 | Apache Corporation only | Agua Dulce (Consolidated Frio) | Nueces | 2 | 70.6K | 1.03M | Apr 2004 – Oct 2013 |
| Driscoll Foundation O-4-14263 | Paloma Operating, LLC only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 39.2K | 20.6K | Jun 2025 – Jul 2026 |
| Levy "A" O-4-13740 | B.P. Productions Inc. only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 6.58K | 137K | Apr 2011 – Jul 2026 |
| Elliff, J. S. O-4-13016 | Apache Corporation only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 4.06K | 164K | Mar 2001 – Jul 2005 |
| Pyle, H.C. O-4-14071 | Urban Oil & Gas Group, LLC only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 3.53K | 154K | Feb 2018 – Jun 2024 |
| Driscoll, Clara O-4-13403 | Devon Energy Production Co, L.P. only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 3.44K | 178K | Jul 2006 – Mar 2012 |
| Wofford, Bush O-4-12964 | Apache Corporation only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 1.54K | 22.3K | Oct 2000 – Oct 2001 |
| Jones E.M. O-4-13357 | Urban Oil & Gas Group, LLC only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 713 | 11.6K | Feb 2006 – Oct 2025 |
| Hefte, Mary T. Etal O-4-13019 | Harper Hefte, Inc. only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 705 | 0 | Mar 2001 – Jan 2020 |
| Walton, Irene O-4-12763 | Apache Corporation only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 489 | 1.63K | Feb 1998 – Apr 2002 |
| Austin, Helen P. O-4-13832 | Urban Oil & Gas Group, LLC only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 355 | 363 | Dec 2012 – Jul 2026 |
| Critz O-4-13324 | P-R-O Management, Inc. only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 179 | 0 | Apr 2005 – Mar 2006 |
| Crane O-4-14231 | Cimarron Engineering, LLC only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 53 | 0 | Sep 2023 – Jul 2026 |
| Texon Royalty -B- GP G-4-85322 | DCP Midstream, LP only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 0 | 0 | Jan 1993 – Mar 2011 |
| Texon Royalty Company B G-4-72868 | Urban Oil & Gas Group, LLC only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 0 | 355K | Jan 1993 – Jul 2026 |
| Elliff, J. S., et Al G-4-8870 | Urban Oil & Gas Group, LLC only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 0 | 0 | Jan 1993 – Jul 2026 |
| Walton, W. W. G-4-52711 | Urban Oil & Gas Group, LLC only | Agua Dulce (Consolidated Frio) | — | 1 | 0 | 1.11M | Jan 1993 – Jul 2026 |
| Ingram, J. C. G-4-44515 | Urban Oil & Gas Group, LLC only | Agua Dulce (Consolidated Frio) | — | 1 | 0 | 224K | Jan 1993 – Jul 2026 |
| Elliff, J. S., et Al G-4-8869 | Union Pacific Resources Company only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 0 | 0 | Jan 1993 – Mar 1996 |
| Purl G-4-8840 | Urban Oil & Gas Group, LLC only | Agua Dulce (Consolidated Frio) | — | 1 | 0 | 29.3K | Jan 1993 – Jul 2026 |
| Ingram, J.C. G-4-151032 | Urban Oil & Gas Group, LLC only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 0 | 13.9K | Jul 1994 – Jul 2026 |
| Elliff, J. S. Etal G-4-151253 | Urban Oil & Gas Group, LLC only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 0 | 1.22M | May 1994 – Jul 2026 |
| Austin, Helen P. G-4-152409 | Urban Oil & Gas Group, LLC only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 0 | 484K | Jun 1994 – Jul 2026 |
| Texon Royalty "B" G-4-152424 | Urban Oil & Gas Group, LLC only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 0 | 629K | Nov 1994 – Jul 2026 |
| Elliff, J. S. et Al G-4-152425 | Urban Oil & Gas Group, LLC only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 0 | 801K | Nov 1994 – Jul 2026 |
| Elliff, J.S. et Al G-4-152504 | Urban Oil & Gas Group, LLC only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 0 | 729K | Oct 1994 – Jul 2026 |
| Sponberg, J.O. G-4-152517 | Urban Oil & Gas Group, LLC only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 0 | 2.1M | Dec 1994 – Jul 2026 |
| Elliff, J. S. et Al G-4-152609 | Apache Corporation only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 0 | 530K | Dec 1994 – Oct 2013 |
| Rivers, M. L. "A" G-4-150852 | Urban Oil & Gas Group, LLC only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 0 | 2.36M | May 1994 – Jul 2026 |
| Driscoll, Clara G-4-150185 | Urban Oil & Gas Group, LLC only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 0 | 986K | Jun 1994 – Jul 2026 |
| Elliff, J. S., Etal G-4-41175 | Apache Corporation only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 0 | 0 | Jan 1993 – Feb 2005 |
| Walton, Irene G-4-149148 | Linn Operating, LLC only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 0 | 711K | Apr 1994 – Jul 2017 |
| Texon Royalty Co. -B- G-4-144551 | Urban Oil & Gas Group, LLC only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 0 | 0 | Mar 1993 – Jul 2026 |
| Ingram, J. C. G-4-8995 | Urban Oil & Gas Group, LLC only | Agua Dulce (Consolidated Frio) | — | 1 | 0 | 901K | Jan 1993 – Jul 2026 |
| Harvey, J. H. G-4-8850 | Urban Oil & Gas Group, LLC only | Agua Dulce (Consolidated Frio) | — | 1 | 0 | 92.6K | Jan 1993 – Jul 2026 |
| Wallace, W. H. G-4-154944 | Urban Oil & Gas Group, LLC only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 0 | 733K | Jun 1995 – Jul 2026 |
| Kerr G-4-159259 | Urban Oil & Gas Group, LLC only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 0 | 5.95K | Jun 1996 – Jul 2026 |
| Sponberg, J. O. G-4-159537 | Urban Oil & Gas Group, LLC only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 0 | 200 | Jun 1996 – Jul 2026 |
| Kinsey, Eleanor G-4-160353 | Urban Oil & Gas Group, LLC only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 0 | 42.3K | Apr 1996 – Jul 2026 |
| Elliff, Mabel G-4-161335 | Urban Oil & Gas Group, LLC only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 0 | 244K | Apr 1996 – Jul 2026 |
| Gee, H. W. G-4-162681 | Ren Services, Inc. only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 0 | 205K | Feb 1997 – Nov 2017 |
| East Side Block Unit G-4-167539 | Wallis Energy, Inc. only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 0 | 263K | Mar 1998 – Jul 2026 |
| Hefte, Mary Tom et Al G-4-169506 | Harper Hefte, Inc. only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 0 | 327K | Jul 1998 – Aug 2018 |
| Hefte, Mary Tom Trust G-4-173526 | Harper Hefte, Inc. only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 0 | 147K | Jun 1999 – Oct 2022 |
| East Side Block Unit G-4-174048 | Wallis Energy, Inc. only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 0 | 489K | Jun 1999 – Jul 2026 |
| Anderson, W. R. G-4-175985 | Urban Oil & Gas Group, LLC only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 0 | 1.06M | Dec 1999 – Jul 2026 |
| Wolter, R. C. G-4-176020 | Apache Corporation only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 0 | 508K | Jan 2000 – Jul 2013 |
| Driscoll, Clara G-4-154419 | Urban Oil & Gas Group, LLC only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 0 | 95K | Apr 1995 – Jul 2026 |