| T. T. Co. Fee O-3-3929 | Radco Operations, L.P. only | Sour Lake | Hardin | 427 | 1.72M | 738 | by Jan 1993 – Jul 2026 |
| Arriola Fee O-3-123 | Whitehead Resources, Ltd. only | Arriola* | Hardin | 86 | 1.63M | 557K | by Jan 1993 – Aug 2026 |
| Wing, Wilson D. O-3-252 | Porter, James W. Special only | Batson Old | Hardin | 94 | 1.31M | 870 | by Jan 1993 – Aug 2026 |
| Feldman, D. D. Fee O-3-3616 | Saratoga Production Company LLC only | Saratoga | Hardin | 243 | 1.25M | 57 | by Jan 1993 – Jul 2026 |
| Choate Fee O-3-224 | Tandem Energy Corporation only | Batson New | Hardin | 57 | 964K | 41.8K | by Jan 1993 – Aug 2026 |
| Sun Pipe Line Co. Fee O-3-20040 | Foundation Energy Management LLC only | Sour Lake | Hardin | 6 | 702K | 531K | by Jan 1993 – Aug 2026 |
| Tarver - Hardin O-3-3866 | Radco Operations, L.P. only | Sour Lake | Hardin | 28 | 677K | 21 | by Jan 1993 – Jul 2026 |
| T. P. Ranch O-3-23675 | Hanson Production Company only | Sour Lake, E. (Price) | Hardin | 2 | 583K | 330K | Apr 1999 – Nov 2006 |
| Porter O-3-25084 | Corona Operating, LLC only | Batson Old | Hardin | 59 | 577K | 0 | Oct 2007 – Aug 2026 |
| Wilkinson, et Al O-3-19968 | Foundation Energy Management LLC only | Sour Lake | Hardin | 1 | 471K | 74K | by Jan 1993 – Aug 2026 |
| BP Vickers "A" O-3-24903 | Neches Transport Inc. only | Silsbee, North (Yegua 4-D) | Hardin | 1 | 452K | 168K | Aug 2006 – Aug 2026 |
| B. P. America O-3-24436 | Hilcorp Energy Company only | Husky (8350) | Hardin | 3 | 443K | 599K | Jul 2003 – Jan 2015 |
| BP Country Lane O-3-25062 | Zachry Exploration, LLC only | Arriola Dome (6650 Sand) | Hardin | 1 | 439K | 4.11M | Jul 2007 – Aug 2026 |
| East Texas Oil Company Fee "B" O-3-21875 | Milestone Operating, Inc. only | Village Mills (Cockfield 2) | Hardin | 5 | 430K | 598K | by Jan 1993 – Nov 2022 |
| Brooks, G.W. Fee O-3-12115 | Foundation Energy Management LLC only | Silsbee (W-1) | Hardin | 8 | 426K | 1.17M | by Jan 1993 – Aug 2026 |
| Carpenter Unit O-3-20271 | Foundation Energy Management LLC only | Sour Lake | Hardin | 5 | 425K | 127K | by Jan 1993 – Aug 2026 |
| Black Stone Gas Unit O-3-24395 | S & S Operating Company, Inc. only | Sour Lake, E. (Price) | Hardin | 1 | 401K | 268K | May 2003 – Aug 2026 |
| Bashara, Sam O-3-14469 | P.o.&g. Operating, LLC only | Saratoga, West | Hardin | 9 | 386K | 238K | by Jan 1993 – Aug 2026 |
| Isaac O-3-24805 | Cobra Oil & Gas Corporation only | Peppiatt (Yegua 8500) | Hardin | 2 | 383K | 455K | Nov 2005 – Aug 2026 |
| Pica O-3-25032 | Wagner Oil Company only | Sour Lake Easter (Yegua) | Hardin | 1 | 379K | 437K | Apr 2007 – Aug 2026 |
| Chevron Fee O-3-20138 | Foundation Energy Management LLC only | Sour Lake | Hardin | 3 | 378K | 145K | by Jan 1993 – Aug 2026 |
| Clubb West O-3-25144 | Wagner Oil Company only | Sour Lake Easter (Yegua) | Hardin | 2 | 370K | 1.37M | Dec 2007 – Aug 2026 |
| Vastar Fee O-3-24574 | Penwell Energy, Inc. only | Sour Lake, E. (9920) | Hardin | 5 | 353K | 678K | Jun 2004 – Mar 2023 |
| Brooks, G. W. Fee O-3-23679 | Foundation Energy Management LLC only | Silsbee (2) | Hardin | 7 | 349K | 1.06M | Jun 1999 – Aug 2026 |
| Brooks, G W O-3-11736 | Foundation Energy Management LLC only | Silsbee (1) | Hardin | 9 | 349K | 670K | by Jan 1993 – Dec 2024 |
| F. P. Elliot Fee O-3-27300 | Foundation Energy Management LLC only | Silsbee (Y-2) | Hardin | 2 | 335K | 162K | May 2017 – Aug 2026 |
| East Texas Oil Co. Fee -C- O-3-10916 | Milestone Operating, Inc. only | Village Mills, East (Z-2) | Hardin | 1 | 289K | 141K | by Jan 1993 – Aug 2026 |
| Penwell Energy Vastar-Pica Unit O-3-24247 | Penwell Energy, Inc. only | Sour Lake (DY-2) | Hardin | 1 | 287K | 0 | Jul 2002 – Nov 2015 |
| Gulf-Choate Fee O-3-210 | Arrowhead Operating Inc. only | Batson New | Hardin | 20 | 257K | 11.6K | by Jan 1993 – Jul 2026 |
| Texaco Fee 4596 O-3-20335 | Radco Operations, L.P. only | Sour Lake | Hardin | 2 | 256K | 143K | by Jan 1993 – Jul 2026 |
| East Texas Oil Co. Fee -C- O-3-10915 | Milestone Operating, Inc. only | Village Mills, East (Z-1) | Hardin | 3 | 244K | 224K | by Jan 1993 – Aug 2026 |
| Elliott, F. P., Fee O-3-3806 | Foundation Energy Management LLC only | Silsbee, West | Hardin | 4 | 233K | 243K | Jun 1993 – Apr 2016 |
| Mills, Nona Field Unit O-3-3204 | Western Energy Group, LLC only | Nona Mills (-F- Sand) | Hardin | 10 | 232K | 631K | by Jan 1993 – Mar 2020 |
| Arco et Al O-3-20044 | Foundation Energy Management LLC only | Sour Lake | Hardin | 3 | 221K | 230K | by Jan 1993 – May 2011 |
| Humble - West O-3-3865 | Radco Operations, L.P. only | Sour Lake | Hardin | 18 | 220K | 21 | by Jan 1993 – Jul 2026 |
| Beech Creek A O-3-25402 | Atlas Operating LLC only | Beech Creek (Yegua 5-A) | Hardin | 1 | 219K | 173K | Nov 2008 – Aug 2026 |
| Gulf Fee O-3-246 | Slatex Well Service, Inc. only | Batson Old | Hardin | 35 | 219K | 420 | by Jan 1993 – Jul 2026 |
| Rice University O-3-25080 | Burk Royalty Co., Ltd. only | Dorsey (Wilcox "D") | Hardin | 1 | 207K | 682K | Sep 2006 – Jul 2026 |
| Brooks , G. W. Fee O-3-13220 | Foundation Energy Management LLC only | Silsbee (W-2) | Hardin | 4 | 206K | 845K | by Jan 1993 – Aug 2026 |
| Amoco-Berryman O-3-20272 | Foundation Energy Management LLC only | Sour Lake | Hardin | 1 | 204K | 116K | by Jan 1993 – Feb 2023 |
| Pica"b" O-3-20062 | Wagner Oil Company only | Arriola, S. (Yegua 1-C) | Hardin | 1 | 202K | 305K | by Jan 1993 – Nov 2022 |
| Choate "A" O-3-7808 | Arrowhead Operating Inc. only | Batson New | Hardin | 13 | 201K | 9.47K | by Jan 1993 – Jul 2026 |
| Gauss et Al O-3-19982 | Foundation Energy Management LLC only | Sour Lake | Hardin | 3 | 200K | 103K | by Jan 1993 – Apr 2019 |
| F. P. Elliot O-3-27510 | Foundation Energy Management LLC only | Silsbee (2) | Hardin | 1 | 192K | 108K | Jan 2019 – Aug 2026 |
| Elliott, F. P., Fee O-3-24285 | Foundation Energy Management LLC only | Silsbee (U) | Hardin | 1 | 180K | 143K | Jul 2002 – Aug 2026 |
| Beech Creek O-3-24977 | Atlas Operating LLC only | Beech Creek (Yegua 5-A) | Hardin | 1 | 179K | 50.1K | Jun 2006 – Aug 2026 |
| Kuderer Oil Unit No. 1 O-3-10897 | H.E.R. Operating, LLC only | Village Mills, East (Z-1) | Hardin | 2 | 168K | 176K | by Jan 1993 – May 2026 |
| Arriola O-3-24728 | Titus Liberty Multi Well 2, LLC only | Arriola, S. (Vicksburg 6070) | Hardin | 1 | 167K | 177K | Jul 2005 – Mar 2025 |
| Coline V O-3-25734 | C.F.O., Inc. only | Batson New | Hardin | 7 | 167K | 0 | Mar 2012 – Aug 2026 |
| Jacques O-3-25947 | Century Exploration Houston, LLC only | Van Meter, East (Yegua, DY) | Hardin | 2 | 165K | 1.42M | May 2012 – Feb 2014 |