| Clemons Unit O-2-10184 | EOG Resources, Inc. only | Eagleville (Eagle Ford-2) | Karnes | 8 | 2.32M | 5.07M | Aug 2012 – Aug 2026 |
| Heard, Clement O-2-2585 | Hilcorp Energy Company only | Tom Oconnor (5500 Sand) | Refugio | 20 | 1.34M | 986K | by Jan 1993 – Apr 2026 |
| Heard, Clement O-2-2873 | Hilcorp Energy Company only | Tom Oconnor (5900 Sand) | Refugio | 22 | 1.22M | 1.07M | by Jan 1993 – Aug 2026 |
| Heard, Clement O-2-2523 | Hilcorp Energy Company only | Tom Oconnor (4500 Greta Mass.) | Refugio | 16 | 540K | 277K | by Jan 1993 – Aug 2026 |
| Clemmons G-6-232834 | Etoco, L.P. only | Brookeland (Austin Chalk, 8800) | Tyler | 1 | 462K | 1.95M | Nov 2007 – Aug 2026 |
| Clements, Hally et Al G-6-215639 | Burk Royalty Co., Ltd. only | Brookeland (Austin Chalk, 8800) | Tyler | 1 | 300K | 1.17M | Apr 2001 – Aug 2026 |
| Clement O-1-17252 | Warwick-Artemis, LLC only | Eagleville (Eagle Ford-1) | Wilson | 2 | 292K | 120K | Sep 2013 – Aug 2026 |
| Alexander O-14-8667 | Amarillo Exploration, Inc. only | Clementine (St. Louis) | Hansford | 4 | 185K | 52.1K | Jun 2012 – Aug 2026 |
| Clements, George S. O-2-3814 | Pegasus Operating, Inc. only | Texana (6620 Frio) | Jackson | 2 | 146K | 65.7K | by Jan 1993 – May 2005 |
| Clements O-10-39001 | Petroplex Energy Inc. only | Spraberry (Trend Area) | Martin | 2 | 125K | 319K | Apr 2008 – Aug 2026 |
| Jones, Clem O-7-8140 | Basa Resources, Inc. only | East Texas | Gregg | 7 | 124K | 109K | by Jan 1993 – Aug 2026 |
| Clement, W. W. O-1-3277 | Wen-BE only | Charlotte (Navarro) | Atascosa | 6 | 123K | 102K | by Jan 1993 – Aug 2026 |
| McLemore A-330 O-8-27011 | WB Mullin Operating LLC only | Throckmorton County Regular | Throckmorton | 15 | 122K | 29 | Sep 1993 – Aug 2026 |
| Clements, E. W. O-7-7801 | Linder, John Operating Co., LLC only | East Texas | Gregg | 3 | 115K | 59.7K | by Jan 1993 – Aug 2026 |
| Clements Allocation a 26-35 O-10-59385 | Langford & Brigham Operating LLC only | Spraberry (Trend Area) | Borden | 1 | 105K | 130K | Jan 2023 – Aug 2026 |
| Heard, Clement O-2-4791 | Hilcorp Energy Company only | Tom Oconnor (7500) | Refugio | 4 | 105K | 332K | by Jan 1993 – Oct 2009 |
| Barker-Clements OL Unit O-3-14336 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Lee | 1 | 96.3K | 106K | by Jan 1993 – Aug 2026 |
| Heard, Clement O-2-8936 | Hilcorp Energy Company only | Tom Oconnor (4600) | Refugio | 2 | 95.3K | 56.2K | Nov 2004 – Aug 2017 |
| Clemens Unit G-6-145228 | Sulphur River Exploration, Inc. only | Gilmer(jurassic) | Upshur | 1 | 89.5K | 6.5M | Apr 1993 – Aug 2026 |
| Clements, E. W. O-7-6933 | Basa Resources, Inc. only | East Texas | Gregg | 6 | 85.3K | 13.1K | by Jan 1993 – Jan 2025 |
| Durkee Gas Unit #1 G-6-17052 | T W Clemons Operating Co., LLC only | Woodlawn (Pettit) | Harrison | 1 | 79.4K | 662K | Aug 1994 – Aug 2026 |
| Clemens, C. C. -B- O-7-8361 | Rusk Co. Well Service Co., Inc. only | East Texas | Gregg | 1 | 77K | 532 | by Jan 1993 – Jun 2026 |
| Clemens Unit G-6-145268 | Sulphur River Exploration, Inc. only | Gilmer(jurassic) | Upshur | 1 | 76.8K | 5.75M | Apr 1993 – Aug 2026 |
| Clemens O-6-14121 | Buffco Production Inc. only | Willow Springs, W.(tr. Pk.) | Gregg | 1 | 75.2K | 268K | Aug 2001 – Aug 2026 |
| Durkee Gas Unit #1 G-6-227604 | T W Clemons Operating Co., LLC only | Woodlawn (Pettit) | Harrison | 1 | 71.4K | 458K | Feb 2007 – Aug 2026 |
| Clement Heard 42 O-2-11813 | Hilcorp Energy Company only | Tom Oconnor (4500 Greta Mass.) | Refugio | 1 | 70.3K | 8.26K | Aug 2019 – Aug 2026 |
| Clemens 'B' O-6-15466 | Dallas Production Company LLC only | Willow Springs (T.peak Trans.) | Gregg | 1 | 69.7K | 285K | Dec 2014 – Aug 2026 |
| Clement Unit St O-3-24738 | Aspect Energy, LLC only | Spruce (10900) | Chambers | 1 | 65K | 278K | Mar 2005 – Aug 2006 |
| Clements, W. M. O-7-8293 | ZTH Operating, LLC only | East Texas | Gregg | 7 | 60.9K | 2.64K | by Jan 1993 – Apr 2026 |
| Clement O-10-23541 | Roff Operating Company, LLC only | Sulphur Draw (Dean 8790) | Martin | 2 | 56.6K | 257K | by Jan 1993 – Jul 2016 |
| Alexander-Odc O-14-3199 | Hamman Oil & Refining Company only | Clementine (Morrow, Upper) | Hansford | 2 | 54.5K | 494K | by Jan 1993 – Apr 2020 |
| Clemmer O-8-32033 | Mesa Ridge Holdings LLC only | Harold (Flippen Lime) | Jones | 6 | 54.3K | 0 | Aug 2016 – Jun 2026 |
| J.M. & R.M. Clemmer O-8-31955 | Mesa Ridge Holdings LLC only | Harold (Flippen Lime) | Jones | 1 | 52.9K | 0 | Mar 2016 – Jun 2026 |
| Clements, L. C. O-14-6403 | Chaparral Energy, L.L.C. only | Horizon (Cleveland) | Ochiltree | 3 | 52.2K | 409K | by Jan 1993 – Apr 2011 |
| McLemore A-178 O-8-27026 | Shaida, John H. only | Sloan (Miss.) | Shackelford | 1 | 51.2K | 29 | Sep 1993 – Aug 2026 |
| L Ranch D O-2-9278 | Ginger Oil Company (A) only | South la Ward (Clements B Sand) | Jackson | 2 | 50.9K | 8.13K | Oct 2008 – Jan 2010 |
| Clemens Unit G-6-161359 | Sulphur River Exploration, Inc. only | Gilmer(jurassic) | Upshur | 1 | 47.2K | 3.44M | Nov 1996 – Aug 2026 |
| McLemore A-232 O-8-27036 | Petrocorp Incorporated,a Tx.corp only | McLemore (Miss.) | Shackelford | 1 | 46.6K | 40.2K | Oct 1993 – Feb 2000 |
| McLemore A-232 G-8-152239 | Shaida, John H. only | Shackelford County Regular (Gas) | Shackelford | 1 | 42.9K | 95.9K | Jun 1994 – Aug 2026 |
| Clements Gas Unit No. 3 O-6-10639 | Eqv Operating LLC only | Alpine (Pettit) | Harrison | 1 | 41K | 21 | by Jan 1993 – Aug 2026 |
| Cook-Clemons GU G-4-185342 | Merit Energy Company only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 39.6K | 5.38M | Jun 2001 – Mar 2021 |
| L Ranch D Unit O-2-9485 | Wagner Oil Company only | South la Ward (Clements B Sand) | Jackson | 1 | 38K | 60.9K | Feb 2010 – Apr 2015 |
| Clements O-8-26727 | Bayou Operating Company, Inc. only | Bull (Gardner) | Taylor | 3 | 34.7K | 10.7K | by Jan 1993 – Aug 2019 |
| Clement Heard 41 O-2-11811 | Hilcorp Energy Company only | Tom Oconnor (4500 Greta Mass.) | Refugio | 1 | 34K | 2.08K | Jul 2019 – Mar 2023 |
| Frank Davis Estate Gas Unit #2 G-6-17050 | T W Clemons Operating Co., LLC only | Woodlawn (Pettit) | Harrison | 1 | 33.5K | 473K | Sep 2001 – Aug 2026 |
| Cook-Clemons GU G-4-187054 | El Paso E & P Company, L. P. only | Monte Christo, N. (Vicksburg T) | Hidalgo | 1 | 33.3K | 2.68M | Sep 2001 – Jan 2008 |
| Clemens Unit G-6-74485 | Sulphur River Exploration, Inc. only | Gilmer(jurassic) | Upshur | 1 | 32.2K | 3.39M | by Jan 1993 – Mar 2023 |
| Rosalie O-14-9691 | Amarillo Exploration, Inc. only | Clementine (St. Louis) | Hansford | 1 | 32K | 0 | Oct 2018 – Aug 2026 |
| Doby-Clemens (Alloc) G-6-282487 | Dallas Production Company LLC only | Willow Springs (Cotton Valley) | Gregg | 1 | 30.6K | 3.16M | Mar 2017 – Aug 2026 |
| Moore, Clemmie O-13-16990 | W.T. Waggoner Estate, Inc. only | Foard County Regular | Foard | 2 | 27.4K | 19 | Apr 1993 – Oct 2013 |