| Clemens Unit G-6-145228 | Sulphur River Exploration, Inc. only | Gilmer(jurassic) | Upshur | 1 | 89.5K | 6.49M | Apr 1993 – Apr 2026 |
| Clemens, C. C. -B- O-7-8361 | Rusk Co. Well Service Co., Inc. only | East Texas | Gregg | 1 | 76.9K | 532 | Jan 1993 – Mar 2026 |
| Clemens Unit G-6-145268 | Sulphur River Exploration, Inc. only | Gilmer(jurassic) | Upshur | 1 | 76.7K | 5.74M | Apr 1993 – Apr 2026 |
| Clemens O-6-14121 | Buffco Production Inc. only | Willow Springs, W.(tr. Pk.) | Gregg | 1 | 75.1K | 268K | Aug 2001 – Apr 2026 |
| Clemens 'B' O-6-15466 | Dallas Production Company LLC only | Willow Springs (T.peak Trans.) | Gregg | 1 | 68.8K | 281K | Dec 2014 – Apr 2026 |
| Clemens Unit G-6-161359 | Sulphur River Exploration, Inc. only | Gilmer(jurassic) | Upshur | 1 | 47.1K | 3.43M | Nov 1996 – Apr 2026 |
| Clemens Unit G-6-74485 | Sulphur River Exploration, Inc. only | Gilmer(jurassic) | Upshur | 1 | 32.2K | 3.39M | Jan 1993 – Mar 2023 |
| Doby-Clemens (Alloc) G-6-282487 | Dallas Production Company LLC only | Willow Springs (Cotton Valley) | Gregg | 1 | 30.2K | 3.11M | Mar 2017 – Apr 2026 |
| Flewellen-Clemens (Alloc) G-6-282545 | Dallas Production Company LLC only | Willow Springs (Cotton Valley) | Gregg | 1 | 26.2K | 3.6M | Mar 2017 – Apr 2026 |
| Arrington-Clemens Gas Unit G-6-169282 | Sulphur River Exploration, Inc. only | Gilmer(jurassic) | Upshur | 1 | 25.5K | 2.18M | Jul 1998 – Apr 2026 |
| Clemens 'A' O-6-15254 | Dallas Production Company LLC only | Willow Springs (T.peak Trans.) | Gregg | 1 | 21.9K | 88.3K | Sep 2013 – Apr 2026 |
| Clemens Unit G-6-186537 | Sulphur River Exploration, Inc. only | Gilmer(jurassic) | Upshur | 1 | 21.5K | 2.88M | Oct 2001 – Apr 2026 |
| Clemens 'D' O-6-15635 | Dallas Production Company LLC only | Willow Springs (T.peak Trans.) | Gregg | 1 | 21.2K | 85.2K | Sep 2018 – Apr 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 |
| Clemens G-6-145701 | Dallas Production, Inc. only | Willow Springs (Cotton Valley) | Gregg | 1 | 15.2K | 1.34M | Jun 1993 – Nov 2014 |
| Clemens G-6-164956 | Dallas Production, Inc. only | Willow Springs (Cotton Valley) | Gregg | 1 | 14.9K | 1.5M | Aug 1997 – Jul 2019 |
| Clemens 'G' O-6-15780 | Dallas Production Company LLC only | Willow Springs (T.peak Trans.) | Gregg | 1 | 12.9K | 30.8K | Aug 2020 – Apr 2026 |
| Clemens G-6-156403 | Dallas Production, Inc. only | Willow Springs (Cotton Valley) | Gregg | 1 | 12.4K | 1.36M | Nov 1995 – May 2018 |
| Clemens-Castleberry G-6-292584 | Dallas Production Company LLC only | Willow Springs (Cotton Valley) | Gregg | 1 | 12.4K | 2.14M | Mar 2022 – Apr 2026 |
| 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 'E' O-6-15630 | Dallas Production Company LLC only | Willow Springs (T.peak Trans.) | Gregg | 1 | 12.2K | 27.8K | Jul 2018 – Apr 2026 |
| Clemens G-6-155240 | Dallas Production Company LLC only | Willow Springs (Cotton Valley) | Gregg | 1 | 12.2K | 1.27M | Jul 1995 – Jan 2015 |
| 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 |
| Clemens Unit G-6-48812 | Sulphur River Exploration, Inc. only | Gilmer(jurassic) | Upshur | 1 | 11K | 901K | Jan 1993 – Apr 2026 |
| Arrington-Clemens Gas Unit G-6-221422 | Sulphur River Exploration, Inc. only | Gilmer(jurassic) | Upshur | 1 | 9.88K | 1.65M | Dec 2005 – Apr 2026 |
| Clemens G-6-185063 | Dallas Production, Inc. only | Willow Springs (Cotton Valley) | Gregg | 1 | 9.81K | 912K | Aug 2001 – Aug 2018 |
| Clemens Unit G-6-193397 | Sulphur River Exploration, Inc. only | Gilmer(jurassic) | Upshur | 1 | 9.48K | 952K | Dec 2002 – Apr 2026 |
| Clemens G-6-164429 | Dallas Production, Inc. only | Willow Springs (Cotton Valley) | Gregg | 1 | 9.32K | 1.65M | Feb 1998 – Jun 2018 |
| State of Texas No. 49829 Tr. 5 G-3-162627 | Rutherford Oil Corporation only | Clemens, N. (Frio C) | Brazoria | 1 | 7.41K | 2.13M | Mar 1997 – Jun 2002 |
| Clemens, C. C. G-6-149741 | Smith Resources, L.L.C. only | Willow Springs (Cotton Valley) | Gregg | 1 | 6.95K | 932K | Apr 1994 – Mar 2019 |
| Clemens, C. C. -A- O-7-8360 | Texaco E & P Inc. only | East Texas | Gregg | 6 | 6.21K | 7.29K | Jan 1993 – May 1995 |
| Clemens G-13-214522 | Eagleridge Operating, LLC only | Newark, East (Barnett Shale) | Parker | 1 | 6.16K | 2.71M | Nov 2005 – Apr 2026 |
| State of Texas Lease #49829 G-3-236335 | Rutherford Oil Corporation only | Clemens, N. (Frio C) | Brazoria | 1 | 5.76K | 252K | Apr 2008 – Mar 2010 |
| Clemens G-13-218137 | Eagleridge Operating, LLC only | Newark, East (Barnett Shale) | Parker | 1 | 4.67K | 1.82M | Mar 2006 – Apr 2026 |
| Clemens G-6-176110 | Dallas Production, Inc. only | Willow Springs (Cotton Valley,w) | Gregg | 1 | 4.25K | 591K | Nov 1999 – Aug 2013 |
| Clemens, Lothar E. "A" O-5-2452 | Ipact only | Corsicana (Shallow) | Navarro | 3 | 4.13K | 68 | Jan 1993 – Jan 2004 |
| State of Texas No. 49829 Tr. 5 G-3-189842 | Rutherford Oil Corporation only | Clemens, N. (Frio B) | Brazoria | 1 | 4.08K | 1.6M | Jul 2002 – Apr 2009 |
| Clemens Unit G-6-191952 | Sulphur River Exploration, Inc. only | Gilmer(jurassic) | Upshur | 1 | 3.43K | 1.26M | Jul 2002 – Apr 2026 |
| Clemens State Farm -B- G-3-132359 | Trinidad Resources, LLC only | Clemens, N. (Frio P-1) | Brazoria | 1 | 2.95K | 1.72M | Jan 1993 – Feb 2025 |
| State of Texas #49829, Tract #5 G-3-46733 | Rutherford Oil Corporation only | Clemens, N. (Frio B) | Brazoria | 1 | 2.59K | 964K | Jan 1993 – Feb 2000 |
| Grobe, Clemens C. O-1-10005 | Genie Oil Company "A" only | Fairfield | Bexar | 3 | 2.12K | 20 | Jan 1993 – Mar 2010 |
| Clemens State Tract 8 GU O-3-22980 | Rutherford Oil Corporation only | Clemens, SE. (Frio B) | Brazoria | 1 | 2.06K | 8.26K | May 1996 – Jul 1996 |
| Clemens G-6-198379 | Dallas Production Company LLC only | Willow Springs (Cotton Valley) | Gregg | 1 | 1.29K | 572K | Oct 2003 – Jun 2017 |
| Clemens G-13-263102 | Eagleridge Operating, LLC only | Newark, East (Barnett Shale) | Parker | 1 | 1.21K | 2.51M | Nov 2011 – Apr 2026 |
| Clemens G-13-263259 | Eagleridge Operating, LLC only | Newark, East (Barnett Shale) | Parker | 1 | 1.15K | 2.5M | Nov 2011 – Apr 2026 |
| Hinkle, J. T., -A- G-3-34343 | Rutherford Oil Corporation only | Clemens, N. (Frio P-1) | Brazoria | 1 | 673 | 237K | Jan 1993 – Sep 1999 |
| Clemens 'F' O-6-15783 | Dallas Production Company LLC only | Willow Springs (T.peak Trans.) | Gregg | 1 | 657 | 5.9K | Nov 2020 – Oct 2021 |
| Clemens, Lothar O-5-2378 | KRK Productions only | Corsicana (Shallow) | Navarro | 8 | 535 | 21 | Jan 1993 – Nov 1999 |
| Collins, R. R. "C" O-7-8710 | Clemens, Thomas N. only | East Texas | Gregg | 1 | 336 | 9 | Apr 1993 – Dec 1993 |