| Sampson-Clark GU G-3-138868 | Hilcorp Energy Company only | Vidor Ames (Yegua EY) | Orange | 1 | 398K | 6.12M | Jan 1993 – Nov 2012 |
| Black Stone Clarke A-169 G-6-294622 | Zarvona Energy LLC only | Brookeland (Austin Chalk, 8800) | Tyler | 1 | 213K | 1.98M | Oct 2022 – Apr 2026 |
| Clark, E.A. Unit 1 G-6-152397 | Cago, Inc. only | Brookeland (Austin Chalk, 8800) | Sabine | 1 | 204K | 1.25M | Jul 1994 – Mar 1998 |
| Sampson-Clark GU G-3-139658 | Hilcorp Energy Company only | Vidor Ames (Yegua EY) | Orange | 1 | 202K | 3.55M | Jan 1993 – Jul 2015 |
| Ericson Clark G-2-223255 | Sandel Operating Company only | Maxine, East (8400) | Live Oak | 1 | 90.8K | 3.05M | Aug 2006 – Nov 2023 |
| Charles D. Clark 1H G-14-277950 | Presidio Petroleum LLC only | Clark Martin (Granite Wash) | Roberts | 1 | 84.2K | 2.38M | Apr 2015 – Apr 2026 |
| Windham-Clark 103 Unit G-9-214430 | Southwest Royalties, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 83.4K | 1.13M | Feb 2005 – Mar 2026 |
| City H & F Properties Gas Unit G-4-192121 | EOG Resources, Inc. only | Clarkwood, S. (Moore) | Nueces | 1 | 80.2K | 3.61M | Oct 2002 – Oct 2007 |
| Judy Clark State C19-16 G-10-288190 | Diamondback E&P LLC only | Phantom (Wolfcamp) | Reeves | 1 | 79.2K | 313K | May 2013 – Jul 2021 |
| Clark Gas Unit II G-2-223305 | Petrovybe Opco LLC only | Christmas, Deep (Wilcox 10800) | De Witt | 1 | 78.6K | 5.6M | Aug 2006 – Mar 2026 |
| Black Stone Clarke A-169 G-6-294623 | Zarvona Energy LLC only | Brookeland (Austin Chalk, 8800) | Tyler | 1 | 74.8K | 2.42M | Oct 2022 – Apr 2026 |
| Puckett Heirs G-6-100377 | Energy Production Corporation only | Neuhoff (Clarksville) | Wood | 1 | 72.8K | 1.56M | Jan 1993 – Dec 2013 |
| Clark-Sain G-4-189119 | Abaco Operating, LLC only | Loco Sueno (Vicksburg QE 1) | Kenedy | 1 | 71.8K | 2.59M | May 2002 – Dec 2025 |
| Clark, L. et al Unit No. 1 G-3-192893 | Karbuhn Oil Company only | Hebert (H-2A) | Jefferson | 1 | 71.1K | 1.34M | Dec 2002 – Apr 2010 |
| Clark Unit G-13-270716 | Eagleridge Operating, LLC only | Newark, East (Barnett Shale) | Montague | 1 | 64.5K | 649K | May 2012 – Apr 2026 |
| O'Connor-Goins Unit, et Al G-3-94912 | Sandel Operating Company only | Iola (Sub-Clarksville) | Grimes | 1 | 61.7K | 3.16M | Jan 1993 – Apr 2026 |
| Clark G-14-274568 | Presidio Petroleum LLC only | Clark Martin (Granite Wash) | Roberts | 1 | 60.4K | 2.08M | Nov 2013 – Apr 2026 |
| Clark-Sain G-4-187581 | Abaco Operating, LLC only | Loco Sueno (Vicksburg QE 1) | Kenedy | 1 | 59.7K | 2.67M | Jan 2002 – Apr 2026 |
| Monadnock 80 G-14-277908 | Presidio Petroleum LLC only | Clark Martin (Granite Wash) | Roberts | 1 | 55.7K | 1.93M | Feb 2015 – Apr 2026 |
| Hachar, D. D. G-4-177211 | Columbus Energy, LLC only | Clark Ranch (Lobo) | Webb | 1 | 55.4K | 6.06M | May 2000 – Aug 2025 |
| Clark Unit G-13-270718 | Eagleridge Operating, LLC only | Newark, East (Barnett Shale) | Montague | 1 | 50.7K | 1.84M | May 2012 – Apr 2026 |
| Martinez, D. S. G-4-136910 | Columbus Energy, LLC only | Clark Ranch (Lobo) | Webb | 1 | 47.4K | 6.73M | Jan 1993 – Apr 2026 |
| Hale G-14-236435 | Presidio Petroleum LLC only | Clark Martin (Granite Wash) | Roberts | 1 | 43.8K | 498K | Oct 2007 – Apr 2026 |
| Sampson-Clark GU G-3-272838 | Hilcorp Energy Company only | Vidor Ames (Yegua EY) | Orange | 1 | 43.5K | 822K | Jun 2013 – Dec 2016 |
| Martinez, D.S. G-4-163520 | Columbus Energy, LLC only | Clark Ranch (Lobo) | Webb | 1 | 43K | 3.52M | Jun 1997 – Sep 2024 |
| Clark A G-2-260283 | Geosouthern Energy Corporation only | De Witt (Eagle Ford Shale) | De Witt | 1 | 43K | 71.2K | Dec 2011 – Feb 2012 |
| Martin Trust G-14-278052 | Presidio Petroleum LLC only | Clark Martin (Granite Wash) | Roberts | 1 | 41.3K | 2.51M | Jan 2015 – Apr 2026 |
| City H & F Properties G-4-146385 | Firstrike Energy Corporation only | Clarkwood, South (9400) | Nueces | 1 | 40.6K | 1.4M | May 1993 – Jan 2013 |
| Clark Unit G-13-270717 | Eagleridge Operating, LLC only | Newark, East (Barnett Shale) | Montague | 1 | 40.3K | 960K | May 2012 – Apr 2026 |
| Clark G-3-161819 | Hilcorp Energy Company only | Bernard, East (7700) | Fort Bend | 1 | 39K | 2.44M | Dec 1996 – Apr 2026 |
| Black Stone Clarke A-169 G-6-219210 | Zarvona Energy LLC only | Brookeland (Austin Chalk, 8800) | Tyler | 1 | 37.3K | 592K | Feb 2006 – Apr 2026 |
| Clark G-3-173290 | Hilcorp Energy Company only | Bernard, East (7700) | Fort Bend | 1 | 37.1K | 3.76M | Dec 1998 – Sep 2025 |
| Clark-Sain G-4-207190 | Abaco Operating, LLC only | Ball Ranch (Vicksburg Cons.) | Kenedy | 1 | 37K | 3.53M | Apr 2004 – Jul 2020 |
| Clark XS G-14-269131 | BE Anadarko II, LLC only | Roberts Co. (St. Louis) | Roberts | 1 | 35.9K | 4.46M | Mar 2012 – Apr 2026 |
| Clark-Sain G-4-232200 | Abaco Operating, LLC only | Ball Ranch (Vicksburg Cons.) | Kenedy | 1 | 34.8K | 1.83M | Aug 2007 – Apr 2026 |
| Clark a Unit G-13-273671 | EOG Resources, Inc. only | Newark, East (Barnett Shale) | Montague | 1 | 34.3K | 799K | Jul 2010 – Apr 2026 |
| Clark-Sain G-4-195640 | Abaco Operating, LLC only | Loco Sueno (Vicksburg QE 1) | Kenedy | 1 | 33.4K | 1.43M | Jun 2003 – Apr 2026 |
| Geistman GU G-4-192677 | EOG Resources, Inc. only | Clarkwood, S. (Watson) | Nueces | 1 | 32.9K | 1.37M | Dec 2002 – May 2005 |
| Clark C G-6-178983 | Eqv Operating LLC only | Carthage (Pettit, Upper) | Panola | 1 | 32.4K | 1.49M | Jun 2000 – Apr 2026 |
| Jones "A" G-6-195656 | Montare Operating, Ltd. only | Schneider (Sub-Clarksville) | Wood | 1 | 32.3K | 916K | Oct 2002 – Apr 2026 |
| State Clark 38-47 G-10-283604 | Atlantic Resources Company, LLC only | Ford, West (Wolfcamp) | Reeves | 1 | 32.3K | 348K | Aug 2017 – Oct 2018 |
| Clark-Sain G-4-223415 | Abaco Operating, LLC only | Ball Ranch (Vicksburg Cons.) | Kenedy | 1 | 32K | 2.01M | Oct 2006 – May 2025 |
| Clark Unit G-13-273346 | EOG Resources, Inc. only | Newark, East (Barnett Shale) | Montague | 1 | 31.1K | 1.44M | Jul 2010 – Apr 2026 |
| Clark, L. W. (Deep) G-13-235240 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 30.5K | 919K | Sep 2007 – Apr 2026 |
| Clark C G-6-29974 | Eqv Operating LLC only | Carthage (Pettit, Lower Gas) | Panola | 1 | 29.2K | 2.93M | Jan 1993 – Apr 2026 |
| Prevost G-4-163522 | Columbus Energy, LLC only | Clark Ranch (Lobo) | Webb | 1 | 27.6K | 5.01M | Apr 1997 – Apr 2026 |
| Kim C3 G-14-277438 | BE Anadarko II, LLC only | Clark Martin (Granite Wash) | Roberts | 1 | 27.4K | 2.85M | Oct 2014 – Apr 2026 |
| Mallett Unit G-3-88290 | Sandel Operating Company only | Iola (Sub-Clarksville) | Grimes | 1 | 27.3K | 1.18M | Jan 1993 – Apr 2026 |
| Kim Flowers G-14-130832 | Templar Operating LLC only | Clark Martin (Granite Wash) | Roberts | 1 | 26.4K | 307K | Jul 1994 – Apr 2018 |
| Clark-Sain G-4-190023 | Abaco Operating, LLC only | Loco Sueno (Vicksburg QE 1) | Kenedy | 1 | 26.1K | 1.28M | Jul 2002 – Apr 2026 |