| Cook-Clemons GU G-4-188960 | Merit Energy Company only | Monte Christo, N. (Vicksburg Q) | Hidalgo | 1 | 27.1K | 4.29M | Nov 2001 – Aug 2026 |
| McLemore A-218 O-8-27051 | Amerac Energy Corporation only | McLemore (Miss.) | Shackelford | 1 | 26.9K | 27.2K | Oct 1993 – Apr 1998 |
| Flewellen-Clemens (Alloc) G-6-282545 | Dallas Production Company LLC only | Willow Springs (Cotton Valley) | Gregg | 1 | 26.4K | 3.66M | Mar 2017 – Aug 2026 |
| Clements "A" O-10-33365 | Momentum Energy, LLC only | Spraberry (Trend Area) | Martin | 1 | 26.3K | 68.6K | by Jan 1993 – Jun 1999 |
| Arrington-Clemens Gas Unit G-6-169282 | Sulphur River Exploration, Inc. only | Gilmer(jurassic) | Upshur | 1 | 25.5K | 2.18M | Jul 1998 – Aug 2026 |
| Clements O-10-24866 | Momentum Energy Corporation only | Spraberry (Trend Area) | Martin | 1 | 24.7K | 72.5K | by Jan 1993 – Nov 2005 |
| Clem, O.E. O-5-2381 | Southwest Operating, Inc.-Tyler only | Fruitvale, SE. (Rodessa, Upper) | Van Zandt | 1 | 24.1K | 124K | by Jan 1993 – Jul 2018 |
| Cook-Clemons Gas Unit G-4-195466 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 23.8K | 3.47M | Jun 2003 – Aug 2026 |
| Clements O-10-25198 | Wineridge Inc. only | Ward, South | Ward | 7 | 23.7K | 34.9K | by Jan 1993 – Jul 2021 |
| McLemore a-619 (T-6) O-8-27082 | Unit Petroleum Company only | McLemore (Miss.) | Shackelford | 1 | 23.3K | 15.2K | Nov 1993 – Feb 2002 |
| Clemmer "A" O-8-27622 | Deep Gully Oil LLC only | Obdurate Obelisk (Palo Pinto) | Jones | 2 | 23.2K | 16.6K | Jul 1995 – Apr 2016 |
| Clementine O-11-70059 | EF Oil and Gas Invest, L.L.C. only | CY-Jack (Lwcc) | Terry | 1 | 22.8K | 0 | Mar 2012 – May 2023 |
| Frank Davis Estate Gas Unit #2 G-6-278342 | T W Clemons Operating Co., LLC only | Woodlawn (Pettit) | Harrison | 1 | 22.5K | 127K | May 2015 – Aug 2026 |
| Clemens 'A' O-6-15254 | Dallas Production Company LLC only | Willow Springs (T.peak Trans.) | Gregg | 1 | 22.1K | 89.2K | Sep 2013 – Aug 2026 |
| Clemens 'D' O-6-15635 | Dallas Production Company LLC only | Willow Springs (T.peak Trans.) | Gregg | 1 | 21.6K | 86.7K | Sep 2018 – Aug 2026 |
| Clemens Unit G-6-186537 | Sulphur River Exploration, Inc. only | Gilmer(jurassic) | Upshur | 1 | 21.6K | 2.89M | Oct 2001 – Aug 2026 |
| McLemore A-232 O-8-28880 | Unit Petroleum Company only | Big Bussy (Caddo, Upper) | Shackelford | 1 | 21.2K | 13.5K | Oct 2000 – Apr 2003 |
| Flowers, Clem O-14-4174 | BP America Production Company only | Dutcher (Cleveland) | Ochiltree | 2 | 20.7K | 172K | by Jan 1993 – Oct 2002 |
| Frank Davis Estate Gas Unit #2 G-6-280069 | T W Clemons Operating Co., LLC only | Woodlawn (Pettit) | Harrison | 1 | 20.4K | 49.7K | Jul 2015 – Aug 2026 |
| William Durkee OU O-6-16018 | T W Clemons Operating Co., LLC only | Woodlawn (Pettit 6500) | Harrison | 1 | 19.9K | 22K | Sep 2022 – Aug 2026 |
| Cook-Clemons GU G-4-183731 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 19.8K | 5.23M | Apr 2001 – Aug 2022 |
| Cook-Clemons GU G-4-181805 | Merit Energy Company only | Monte Christo, N(vicksburg T LO) | Hidalgo | 1 | 19.5K | 6.4M | Dec 2000 – Jun 2009 |
| McLemore A-232 O-8-29451 | Shaida, John H. only | McLemore (Miss.) | Shackelford | 1 | 19.1K | 27.3K | May 2004 – Aug 2026 |
| Clawson-Steele "A" O-14-3984 | New Arch Energy, LLC only | Clementine (Marmaton) | Hansford | 1 | 17.7K | 551 | by Jan 1993 – Aug 2026 |
| Durkee Gas Unit #1 G-6-74649 | T W Clemons Operating Co., LLC only | Woodlawn (Cotton Valley) | Harrison | 1 | 16.8K | 1.15M | by Jan 1993 – Aug 2026 |
| Clemens State Tract 8 GU G-3-162116 | Rutherford Oil Corporation only | Clemens, SE. (Frio B Fba) | Brazoria | 1 | 16.6K | 257K | Jan 1997 – Apr 1998 |
| Clements, George S. O-2-12294 | Cyber Enviro-Tech Inc only | Texana (6620 Frio) | Jackson | 1 | 16.5K | 0 | Jan 2022 – Aug 2026 |
| Heard, Clement O-2-7842 | Hilcorp Energy Company only | Tom Oconnor (4400) | Refugio | 1 | 16.5K | 56.2K | by Jan 1993 – Feb 2006 |
| Clements, E. W. O-7-7945 | Texaco E & P Inc. only | East Texas | Gregg | 9 | 15.6K | 13.5K | by Jan 1993 – Aug 1998 |
| Clemens G-6-145701 | Dallas Production, Inc. only | Willow Springs (Cotton Valley) | Gregg | 1 | 15.2K | 1.34M | Jun 1993 – Nov 2014 |
| Caster, Clemmie O-1-533 | Texstar Oil & Gas, LLC only | Dunlap | Guadalupe | 6 | 15.1K | 9.3K | by Jan 1993 – Jun 2026 |
| Clemens G-6-164956 | Dallas Production, Inc. only | Willow Springs (Cotton Valley) | Gregg | 1 | 14.9K | 1.5M | Aug 1997 – Jul 2019 |
| Clemmer, A. W. O-8-26746 | Rexcom, Inc. only | Linda-Leigh Anne (Swastika) | Jones | 2 | 14.5K | 36 | by Jan 1993 – May 2002 |
| Davis, Frank Estate G/U/ 2 G-6-250623 | T W Clemons Operating Co., LLC only | Woodlawn (Pettit-Page) | Harrison | 1 | 13.8K | 990K | Nov 2009 – Aug 2026 |
| Clemens 'G' O-6-15780 | Dallas Production Company LLC only | Willow Springs (T.peak Trans.) | Gregg | 1 | 13.3K | 31.4K | Aug 2020 – Aug 2026 |
| Clemmer O-8-27646 | Dove Mineral only | Obdurate Obelisk (Palo Pinto) | Jones | 1 | 13.1K | 3.18K | Aug 1995 – Jul 1998 |
| J. L. Ferrell OU O-6-15889 | T W Clemons Operating Co., LLC only | Woodlawn (Pettit 6500) | Harrison | 1 | 12.7K | 124K | Mar 2022 – Aug 2026 |
| Clemens-Castleberry G-6-292584 | Dallas Production Company LLC only | Willow Springs (Cotton Valley) | Gregg | 1 | 12.7K | 2.21M | Mar 2022 – Aug 2026 |
| Clemens 'E' O-6-15630 | Dallas Production Company LLC only | Willow Springs (T.peak Trans.) | Gregg | 1 | 12.5K | 28.4K | Jul 2018 – Aug 2026 |
| Clemens G-6-156403 | Dallas Production, Inc. only | Willow Springs (Cotton Valley) | Gregg | 1 | 12.4K | 1.36M | Nov 1995 – May 2018 |
| Cook-Clemens GU G-4-184780 | El Paso E & P Company, L. P. only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 12.3K | 3.69M | Jul 2001 – May 2008 |
| Clemens G-6-155240 | Dallas Production Company LLC only | Willow Springs (Cotton Valley) | Gregg | 1 | 12.2K | 1.27M | Jul 1995 – Jan 2015 |
| Clemons Gas Unit No. 1 G-4-142267 | El Paso E & P Company, L. P. only | Monte Christo (56-a, N) | Hidalgo | 1 | 12.1K | 1.64M | by Jan 1993 – May 2010 |
| McLemore A-686 O-8-28037 | Unit Petroleum Company only | Ranch View (Caddo) | Shackelford | 1 | 11.9K | 66.8K | Jun 1996 – Feb 2002 |
| Clemens State Tract 8 Gas Unit G-3-161862 | Rutherford Oil Corporation only | Clemens, SE, (Frio A) | Brazoria | 1 | 11.9K | 172K | Aug 1996 – Aug 1997 |
| Clemens G-6-150918 | Cotton Valley Operations, Inc. only | White Oak (Cotton Valley Sand) | Gregg | 1 | 11.8K | 1.07M | May 1994 – Nov 2000 |
| Clement Unit G-13-273673 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Montague | 1 | 11.3K | 517K | Jan 2011 – Aug 2026 |
| Clements O-8-27002 | Wespac Technologies Corp only | George Sweet (Ellen.) | Callahan | 1 | 11.1K | 6.14K | Jul 1993 – Oct 2000 |
| Clemens Unit G-6-48812 | Sulphur River Exploration, Inc. only | Gilmer(jurassic) | Upshur | 1 | 11K | 904K | by Jan 1993 – Aug 2026 |
| Kingstree Ranch G-6-179733 | T W Clemons Operating Co., LLC only | Woodlawn (Cotton Valley) | Harrison | 1 | 10.6K | 654K | Aug 2000 – Jun 2025 |