| Kasman G-3-222272 | Rap Operating, L.L.C. only | Hamman Deep (Frio 12,000) | Matagorda | 1 | 211K | 5.91M | Apr 2006 – Jan 2019 |
| Milberger Gas Unit G-3-210822 | Rap Operating, L.L.C. only | Hamman, East (10,870) | Matagorda | 1 | 66.2K | 1.92M | Jun 2005 – Jan 2023 |
| Milberger Gas Unit G-3-211023 | South Bay Resources, L.L.C. only | Hamman, East (11,200 Frio) | Matagorda | 1 | 62.5K | 1.32M | Aug 2005 – May 2013 |
| Slone, L. M. O-3-1856 | Rusk Energy Operating LLC only | Hamman | Matagorda | 3 | 54K | 41 | by Jan 1993 – Aug 2026 |
| Talafuse G-3-212241 | South Bay Resources, L.L.C. only | Hamman, East (11,200 Frio) | Matagorda | 1 | 53.8K | 1.5M | Nov 2005 – Dec 2011 |
| Milberger, F. J. G-3-222480 | Rap Operating, L.L.C. only | Hamman, East (11,200 Frio) | Matagorda | 1 | 43.2K | 1.51M | Aug 2006 – Jan 2022 |
| Arnold Heirs G-3-223833 | Houston Energy, L.P. only | Hamman, East ( Richer) | Matagorda | 1 | 41.9K | 1.07M | Feb 2007 – Dec 2009 |
| Goolsbee G-3-234911 | Rap Operating, L.L.C. only | Hamman, East (11,200 Frio) | Matagorda | 1 | 39.5K | 946K | Sep 2007 – Jan 2023 |
| Miller, L. H. Gas Unit G-3-151805 | Hamman Oil & Refining Company only | Jennings Lake (Frio 9500) | Matagorda | 1 | 37.3K | 825K | Dec 1994 – Nov 1997 |
| Talafuse Gas Unit G-3-254779 | Amrwr, LLC only | Hamman, East (11,200 Frio FB B) | Matagorda | 1 | 34.2K | 755K | Jun 2008 – Jan 2023 |
| Cleveland, May O-3-1852 | Rusk Energy Operating LLC only | Hamman | Matagorda | 4 | 33.8K | 41 | by Jan 1993 – Jul 2026 |
| Milberger Gas Unit G-3-246582 | South Bay Resources, L.L.C. only | Hamman, East (11,200 Frio) | Matagorda | 1 | 27.1K | 303K | Feb 2008 – Jul 2010 |
| Goolsbee G-3-250050 | Rap Operating, L.L.C. only | Hamman, East (11,150) | Matagorda | 1 | 27K | 451K | Jul 2008 – May 2022 |
| Grimes GU G-3-216896 | South Bay Resources, L.L.C. only | Hamman, East (11,500) | Matagorda | 1 | 23.4K | 1.1M | Aug 2006 – Aug 2010 |
| Crooker O-3-1853 | Rusk Energy Operating LLC only | Hamman | Matagorda | 2 | 20.3K | 41 | by Jan 1993 – Nov 2021 |
| Slone, L. M., -A- O-3-6277 | Rusk Energy Operating LLC only | Hamman | Matagorda | 1 | 20.2K | 41 | by Jan 1993 – Mar 2021 |
| Richers, E. O-3-1855 | Rusk Energy Operating LLC only | Hamman | Matagorda | 1 | 18.9K | 41 | by Jan 1993 – Mar 2020 |
| Milberger G-3-209426 | Rap Operating, L.L.C. only | Hamman, East (11,200 Frio) | Matagorda | 1 | 17.4K | 239K | Dec 2004 – Jul 2010 |
| Horak Gas Unit G-3-225126 | South Bay Resources, L.L.C. only | Hamman, East (11,200 Frio) | Matagorda | 1 | 15K | 342K | Jan 2007 – Jul 2010 |
| Miller, L. H. Gas Unit G-3-118943 | Hamman Oil & Refining Company only | Jennings Lake (Frio 9500) | Matagorda | 1 | 12.6K | 276K | by Jan 1993 – Jan 1996 |
| Talafuse G-3-224009 | South Bay Resources, L.L.C. only | Hamman, East (11,200 Frio) | Matagorda | 1 | 12.1K | 515K | Sep 2006 – Jan 2012 |
| Talafuse Gas Unit G-3-257003 | Rap Operating, L.L.C. only | Hamman, East ( FB A) | Matagorda | 1 | 11.7K | 488K | Sep 2008 – May 2012 |
| McWilliams Oil Unit O-3-25759 | Atlas Operating LLC only | Hamman | Matagorda | 1 | 11K | 115K | Feb 2011 – Dec 2015 |
| Richers, E. O-3-23404 | Rosenthal, Stanley H. Estate Of only | Hamman (-P- Sand) | Matagorda | 1 | 10.8K | 0 | Apr 1997 – Jun 2013 |
| Huebner Trusts O-3-25859 | Red Wolf Oil Company, Inc. only | Hamman (9500 Frio) | Matagorda | 1 | 10.7K | 69.3K | Mar 2011 – Aug 2013 |
| Slone, L.M. O-3-23324 | Rusk Energy Operating LLC only | Hamman (8900) | Matagorda | 1 | 10.2K | 0 | Apr 1997 – Mar 2021 |
| Milberger Gas Unit G-3-276868 | Rap Operating, L.L.C. only | Hamman, East (10,700 Frio) | Matagorda | 1 | 9.57K | 451K | May 2013 – Jan 2023 |
| Crooker "A" O-3-13313 | Rusk Energy Operating LLC only | Hamman | Matagorda | 1 | 8.09K | 41 | by Jan 1993 – Mar 2021 |
| Huebner, M. D. O-3-22045 | Global XRC Corp only | Hamman ( 9,800) | Matagorda | 1 | 7.04K | 290 | May 1993 – Jun 2019 |
| Reinke Estate G-3-48231 | EOG Resources, Inc. only | Hamman, East (10,100 Frio) | Matagorda | 1 | 2.93K | 223K | by Jan 1993 – Jan 2001 |
| Hallemann Gas Unit G-3-180114 | EOG Resources, Inc. only | Hamman, East (10,870) | Matagorda | 1 | 2.51K | 112K | Sep 2000 – Feb 2004 |
| Hallemann G-3-230552 | Walter Oil & Gas Corporation only | Hamman Deep (Frio 12,000) | Matagorda | 1 | 2.35K | 64.5K | May 2007 – Oct 2007 |
| Reeves, Marguerite O-3-18573 | Rusk Energy Operating LLC only | Hamman (11,500 Frio) | Matagorda | 1 | 1.54K | 37 | by Jan 1993 – Aug 2026 |
| Reinke Heirs G-3-223311 | Helis Oil & Gas Company, L.L.C. only | Hamman, East (10,100 Frio) | Matagorda | 1 | 1.46K | 49.3K | Nov 2007 – Oct 2008 |
| Richers, Alfred B. O-3-19806 | Midfield SWD, LLC only | Hamman (10,900) | Matagorda | 1 | 627 | 172 | by Jan 1993 – Aug 1999 |
| Arnold Gas Unit G-3-250746 | South Bay Resources, L.L.C. only | Hamman, East (10,870) | Matagorda | 1 | 622 | 1.06K | Sep 2007 – Dec 2007 |
| Golf Course O-3-27833 | Kebo Oil & Gas, Inc. only | Hamman (9150) | Matagorda | 1 | 536 | 51.7K | Jan 2020 – Sep 2020 |
| Horn, Jessie F. Unit O-3-1858 | Rusk Energy Operating LLC only | Hamman | Matagorda | 1 | 466 | 41 | by Jan 1993 – Feb 2021 |
| Richers, E. G-3-40970 | K-3 Resources, LP only | Hamman ( 9,900 Frio) | Matagorda | 1 | 429 | 162K | by Jan 1993 – Sep 2002 |
| McWilliams Oil Unit G-3-284393 | Atlas Operating LLC only | Hamman | Matagorda | 1 | 254 | 11.9K | Jan 2016 – Aug 2023 |
| Kaack, Mary G-3-37345 | Aransas Drlg & Workover Co Inc only | Hamman, East (10,870) | Matagorda | 1 | 170 | 0 | Jan 1996 – Jan 1996 |
| Huebner, M. D. G-3-126572 | Roule Production Company only | Hamman ( 9,800) | Matagorda | 1 | 107 | 293 | by Jan 1993 – Apr 1993 |
| Slone, L.M. O-3-20221 | Rosenthal, Stanley H. only | Hamman (9500 Frio) | Matagorda | 1 | 24 | 11 | by Jan 1993 – Oct 1995 |
| Camp et Al O-3-21349 | Hamman Oil & Refining Company only | Markham, East (6900) | Matagorda | 1 | 0 | 0 | — |
| Richers, E. O-3-25290 | K-3 Resources, LP only | Hamman | Matagorda | 1 | 0 | 0 | — |
| Milberger Gas Unit G-3-259457 | South Bay Resources, L.L.C. only | Hamman, East (10,870) | Matagorda | 1 | 0 | 0 | — |
| Richers O-3-17868 | Rosenthal, Stanley H. only | Hamman (Hancock C, Birthday SD) | Matagorda | 1 | 0 | 4 | May 1994 – Oct 1995 |
| Hallemann Gas Unit G-3-189759 | EOG Resources, Inc. only | Hamman, East (11,200 Frio) | Matagorda | 1 | 0 | 0 | — |
| Glover Unit O-3-1848 | Arco Oil & Gas Co. only | Hamman | Matagorda | 1 | 0 | 0 | — |
| Ransom, L. G-3-107485 | Rosenthal, Stanley H. only | Hamman (-P- Sand) | Matagorda | 1 | 0 | 0 | — |