| Kurth, J.H., Jr. -B- O-3-27180 | Foundation Energy Management LLC | Newton, N. (Kurth Sand) | Newton | 3 | 2.15M | 1.01M | Jun 2016 – Apr 2026 |
| Guitar Consolidated O-10-37089 | Foundation Energy Management LLC | Would Have (Clearfork) | Howard | 42 | 1.16M | 390K | May 2003 – Nov 2019 |
| Would Have East Side Unit O-10-37786 | Foundation Energy Management LLC | Would Have (Clearfork) | Howard | 27 | 780K | 134K | Jun 2006 – Nov 2019 |
| Sun Pipe Line Co. Fee O-3-20040 | Foundation Energy Management LLC | Sour Lake | Hardin | 6 | 700K | 531K | Jan 1993 – Apr 2026 |
| Wilkinson, et Al O-3-19968 | Foundation Energy Management LLC | Sour Lake | Hardin | 1 | 471K | 74K | Jan 1993 – Apr 2026 |
| Kurth, J. H., Jr. -A- O-3-5035 | Foundation Energy Management LLC | Newton, N. (Kurth Sand) | Newton | 3 | 440K | 213K | Jan 1993 – Apr 2026 |
| Brooks, G.W. Fee O-3-12115 | Foundation Energy Management LLC | Silsbee (W-1) | Hardin | 8 | 425K | 1.17M | Jan 1993 – Apr 2026 |
| Carpenter Unit O-3-20271 | Foundation Energy Management LLC | Sour Lake | Hardin | 5 | 423K | 127K | Jan 1993 – Apr 2026 |
| Chevron Fee O-3-20138 | Foundation Energy Management LLC | Sour Lake | Hardin | 3 | 376K | 145K | Jan 1993 – Apr 2026 |
| Brooks, G W O-3-11736 | Foundation Energy Management LLC | Silsbee (1) | Hardin | 9 | 349K | 670K | Jan 1993 – Dec 2024 |
| Brooks, G. W. Fee O-3-23679 | Foundation Energy Management LLC | Silsbee (2) | Hardin | 7 | 346K | 1.05M | Jun 1999 – Apr 2026 |
| F. P. Elliot Fee O-3-27300 | Foundation Energy Management LLC | Silsbee (Y-2) | Hardin | 2 | 325K | 159K | May 2017 – Apr 2026 |
| Elliott, F. P., Fee O-3-3806 | Foundation Energy Management LLC | Silsbee, West | Hardin | 4 | 233K | 243K | Jun 1993 – Apr 2016 |
| Arco et Al O-3-20044 | Foundation Energy Management LLC | Sour Lake | Hardin | 3 | 221K | 230K | Jan 1993 – May 2011 |
| Brooks , G. W. Fee O-3-13220 | Foundation Energy Management LLC | Silsbee (W-2) | Hardin | 4 | 206K | 843K | Jan 1993 – Apr 2026 |
| Amoco-Berryman O-3-20272 | Foundation Energy Management LLC | Sour Lake | Hardin | 1 | 204K | 116K | Jan 1993 – Feb 2023 |
| Gauss et Al O-3-19982 | Foundation Energy Management LLC | Sour Lake | Hardin | 3 | 200K | 103K | Jan 1993 – Apr 2019 |
| F. P. Elliot O-3-27510 | Foundation Energy Management LLC | Silsbee (2) | Hardin | 1 | 190K | 106K | Jan 2019 – Apr 2026 |
| Ward "17" O-10-37441 | Foundation Energy Management LLC | Would Have (Clearfork) | Howard | 1 | 186K | 97.3K | Oct 2004 – Sep 2019 |
| Elliott, F. P., Fee O-3-24285 | Foundation Energy Management LLC | Silsbee (U) | Hardin | 1 | 180K | 142K | Jul 2002 – Apr 2026 |
| Mobil Fee Unit O-3-20067 | Foundation Energy Management LLC | Sour Lake | Hardin | 2 | 153K | 51.4K | Jan 1993 – Apr 2026 |
| McCaig O-3-20419 | Foundation Energy Management LLC | Sour Lake | Hardin | 1 | 153K | 322K | Jan 1993 – Aug 2013 |
| Elliott, F. P. Fee O-3-13221 | Foundation Energy Management LLC | Silsbee, West (1ST Yegua) | Hardin | 1 | 150K | 160K | Jan 1993 – Jan 2022 |
| Brooks, G. W. O-3-20902 | Foundation Energy Management LLC | Silsbee (Y) | Hardin | 2 | 147K | 192K | Jan 1993 – Feb 2011 |
| Brooks, G W O-3-11741 | Foundation Energy Management LLC | Silsbee (V) | Hardin | 3 | 146K | 366K | Jan 1993 – Apr 2026 |
| Parker, James F. O-3-9626 | Foundation Energy Management LLC | Fred, East (8200 -C- Sand) | Tyler | 1 | 132K | 25.1K | Jan 1993 – Feb 2026 |
| Kirby Lumber Corp. -D- #1 O-3-136 | Foundation Energy Management LLC | Bancroft, North (Wilcox) | Newton | 2 | 131K | 25.1K | Jan 1993 – Oct 2016 |
| Brooks, G.W. Fee O-3-16928 | Foundation Energy Management LLC | Silsbee (Y) | Hardin | 2 | 118K | 263K | Jan 1993 – Jan 2022 |
| Elliott, F. P. Fee O-3-13197 | Foundation Energy Management LLC | Silsbee, West (U-Sand) | Hardin | 1 | 118K | 165K | Jan 1993 – Sep 2004 |
| Cunningham, Mary J. O-3-10321 | Foundation Energy Management LLC | Silsbee, North (Yegua 2) | Hardin | 3 | 105K | 198K | Jan 1993 – Feb 2012 |
| Brooks, G. W. O-3-23490 | Foundation Energy Management LLC | Silsbee (U) | Hardin | 2 | 96.1K | 664K | Jun 1998 – Mar 2025 |
| Brooks, G. W., Fee O-3-26247 | Foundation Energy Management LLC | Silsbee (V) | Hardin | 1 | 94.6K | 99.2K | Sep 2012 – Apr 2026 |
| Parker, J. F., -B- O-3-5821 | Foundation Energy Management LLC | Fred, East (8200 -C- Sand) | Tyler | 2 | 93.6K | 43.3K | Jan 1993 – Mar 2026 |
| Parker, J. F., -B- O-3-8098 | Foundation Energy Management LLC | Fred, East (8200 -A-) | Tyler | 1 | 85.1K | 31.8K | Jan 1993 – Apr 2026 |
| Rosedale O-3-20502 | Foundation Energy Management LLC | Sour Lake | Hardin | 3 | 82.8K | 178K | Jan 1993 – Sep 2005 |
| Brooks, G W O-3-11742 | Foundation Energy Management LLC | Silsbee (X) | Hardin | 4 | 79.1K | 217K | Jan 1993 – Feb 2014 |
| Geldard, Bertha O-3-11740 | Foundation Energy Management LLC | Silsbee (T) | Hardin | 1 | 78.8K | 192K | Jan 1993 – Dec 2013 |
| Flag-Redfern O-3-20237 | Foundation Energy Management LLC | Sour Lake | Hardin | 3 | 77.9K | 70.4K | Jan 1993 – Jul 2003 |
| Dillard O-10-37099 | Foundation Energy Management LLC | Would Have (Clearfork) | Howard | 1 | 70.4K | 32.7K | Sep 2003 – Nov 2019 |
| Brooks, G. W., Fee O-3-10361 | Foundation Energy Management LLC | Silsbee, E. (X-1 Yegua) | Hardin | 1 | 63.8K | 90K | Jan 1993 – Feb 2009 |
| Kurth, J. H.,jr.-A- O-3-27294 | Foundation Energy Management LLC | Blue Marsh (Quinn) | Newton | 1 | 55.1K | 19.3K | Jul 2017 – May 2019 |
| Griffith O-8-16000 | Foundation Energy Management LLC | Obrien (Strawn) | Haskell | 1 | 46.4K | 24 | Jan 1993 – Dec 2017 |
| Fly, Florence O-8-15919 | Foundation Energy Management LLC | Obrien (Strawn) | Haskell | 2 | 38.6K | 24 | Jan 1993 – Aug 2017 |
| Hampton, A. Fee O-3-12906 | Foundation Energy Management LLC | Hampton (Yegua T) | Hardin | 1 | 34.4K | 26.2K | Jan 1993 – Jul 2016 |
| Gallsworthy, Jimmiebel O-3-23807 | Foundation Energy Management LLC | Village Mills, East (V-1) | Hardin | 1 | 31.4K | 105K | Mar 2000 – Mar 2016 |
| Brooks, G. W. Fee O-3-26735 | Foundation Energy Management LLC | Silsbee (1) | Hardin | 1 | 31.2K | 130K | Feb 2016 – Apr 2026 |
| Gibson O-10-43869 | Foundation Energy Management LLC | Would Have (Clearfork) | Howard | 1 | 29.4K | 11.1K | Aug 2005 – Nov 2019 |
| Kuderer Oil Unit I O-3-13340 | Foundation Energy Management LLC | Village Mills, East (P) | Hardin | 3 | 25.8K | 129K | Jan 1993 – Mar 2016 |
| F. P. Elliot Fee O-3-27885 | Foundation Energy Management LLC | Silsbee (Y-3) | Hardin | 1 | 24.2K | 38.9K | May 2018 – Jul 2023 |
| Kurth, J.H., Jr. -A- O-3-27553 | Foundation Energy Management LLC | Blue Marsh (Yegua 5TH) | Newton | 1 | 21.7K | 26.4K | Jun 2019 – Feb 2021 |