| 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 |
| Smolik, Albert G-2-101678 | Foundation Energy Management LLC | Word, N. (Edwards) | Lavaca | 1 | 21.3K | 4.45M | Jan 1993 – Oct 2025 |
| F. P. Elliot Fee O-3-28075 | Foundation Energy Management LLC | Silsbee (Y) | Hardin | 1 | 19.4K | 39.6K | Aug 2023 – Apr 2026 |
| Kuderer Oil Unit No. 2 O-3-10899 | Foundation Energy Management LLC | Village Mills, East (Z-1) | Hardin | 1 | 17.3K | 13K | Jan 1993 – Aug 1999 |
| Carter, W. R. O-3-23643 | Foundation Energy Management LLC | Village Mills, East (T-1) | Hardin | 2 | 16.2K | 213K | Mar 1999 – Aug 2013 |
| Ellery, J., Fee O-3-5175 | Foundation Energy Management LLC | Silsbee, South (Wilcox 11000) | Hardin | 1 | 15.9K | 104 | Jan 1993 – Apr 2026 |
| Boles, Alfred et al Unit O-3-10759 | Foundation Energy Management LLC | Copeland Creek (3200 Sand) | Polk | 1 | 13.8K | 3.03K | Jan 1993 – Jul 2001 |
| Smolik, Albert G-2-96320 | Foundation Energy Management LLC | Word, N. (Edwards) | Lavaca | 1 | 13.4K | 2.94M | Jan 1993 – Apr 2026 |
| Brooks, G. W., Fee O-3-26734 | Foundation Energy Management LLC | Silsbee (W-1) | Hardin | 1 | 12K | 59.4K | Dec 2013 – Jun 2018 |
| Julia Mott Gas Unit No. 2A G-2-178893 | Foundation Energy Management LLC | Yoakum (Edwards) | De Witt | 1 | 10.7K | 3.59M | May 2000 – Apr 2026 |
| Carter, W. R. et UX O-3-13761 | Foundation Energy Management LLC | Village Mills, East (O) | Hardin | 2 | 8.5K | 52.9K | Jan 1993 – Apr 2013 |
| Nelson, O. C. Fee O-3-3793 | Foundation Energy Management LLC | Silsbee, North (Yegua 4-D) | Hardin | 2 | 8.31K | 40.5K | Feb 1993 – May 1997 |
| Trusty Oil Unit O-3-23920 | Foundation Energy Management LLC | Village Mills, East (T-1) | Hardin | 1 | 8.15K | 35.6K | Nov 2000 – Aug 2010 |
| Sudduth, H. W. Fee O-3-5130 | Foundation Energy Management LLC | Newton, N. (Kurth Sand) | Newton | 1 | 8.07K | 8.35K | Jan 1993 – Nov 1996 |
| Julia Mott Gas Unit No. 1 G-2-215069 | Foundation Energy Management LLC | Yoakum (Edwards) | De Witt | 1 | 7.95K | 360K | Mar 2005 – Apr 2022 |
| Julia Mott Gas Unit No. 3 G-2-280535 | Foundation Energy Management LLC | Yoakum (Wilcox 7450) | De Witt | 1 | 7.2K | 519K | Sep 2013 – Apr 2026 |
| Mott, Julia Gas Unit #5 G-2-212209 | Foundation Energy Management LLC | Yoakum (Wilcox 7450) | De Witt | 1 | 6.55K | 819K | May 2005 – Apr 2026 |
| Crain Gas Unit No. 2 G-2-175313 | Foundation Energy Management LLC | Meyersville, North (Wilcox J) | De Witt | 1 | 6.11K | 300K | Sep 1999 – Nov 2018 |
| Trusty Oil Unit O-3-11905 | Foundation Energy Management LLC | Village Mills, East (P) | Hardin | 2 | 5.26K | 310 | Jan 1993 – Apr 1996 |
| Kuderer Oil Unit 1 O-3-24850 | Foundation Energy Management LLC | Village Mills East (Q) | Hardin | 1 | 4.41K | 11.2K | May 2006 – Aug 2016 |
| Nelson, O. C. Fee O-3-3792 | Foundation Energy Management LLC | Silsbee, North (Yegua 4-B) | Hardin | 3 | 4.39K | 39.4K | Jan 1993 – Apr 1999 |
| Albert Smolik Unit 1 G-2-161752 | Foundation Energy Management LLC | Word, N. (Edwards) | Lavaca | 1 | 4.07K | 1.19M | Jul 1996 – Apr 2026 |
| Cunningham, Mary J. G-3-210920 | Foundation Energy Management LLC | Silsbee, North (Yegua 2C) | Hardin | 1 | 3.85K | 55.4K | Aug 2005 – Jan 2013 |
| Julia Mott Gas Unit No. 3 G-2-183677 | Foundation Energy Management LLC | Yoakum (Wilcox 7300) | De Witt | 1 | 3.56K | 155K | Mar 2001 – Mar 2009 |
| Neimann, Henry G-8-18101 | Foundation Energy Management LLC | Pottsville (Marble Falls) | Hamilton | 1 | 2.83K | 127K | Jan 1993 – Mar 2019 |
| F. P. Elliot Fee O-3-27298 | Foundation Energy Management LLC | Silsbee (Y-5) | Hardin | 1 | 2.82K | 3.45K | Jul 2017 – May 2018 |
| Kuderer Unit 1 G-3-173566 | Foundation Energy Management LLC | Village Mills, East (R) | Hardin | 1 | 2.18K | 102K | Jun 1999 – Apr 2006 |
| Burrell G-14-102775 | Foundation Energy Management LLC | Graystone (Morrow SD) | Wheeler | 1 | 2.13K | 987K | Feb 1993 – Dec 2015 |
| Brooks, G W O-3-26401 | Foundation Energy Management LLC | Silsbee (T) | Hardin | 2 | 1.92K | 43.9K | Feb 2013 – Nov 2016 |
| Nashville A O-3-27717 | Foundation Energy Management LLC | Slessinger (Wilcox 10,000) | Hardin | 1 | 1.6K | 19.8K | Dec 2019 – Aug 2021 |
| Burrell, Opal G-14-111514 | Foundation Energy Management LLC | Graystone (Morrow SD) | Wheeler | 1 | 1.3K | 494K | Feb 1993 – Jun 2014 |
| Geldard, Bertha O-3-23717 | Foundation Energy Management LLC | Silsbee (2) | Hardin | 1 | 1.25K | 3.07K | Aug 1999 – Jan 2001 |
| Rea, T. K. G-8-18100 | Foundation Energy Management LLC | Pottsville (Marble Falls) | Hamilton | 1 | 1.22K | 331K | Jan 1993 – Mar 2019 |
| Mott, Julia Gas Unit G-2-70281 | Foundation Energy Management LLC | Yoakum (Edwards) | De Witt | 1 | 1.13K | 5.3M | Jan 1993 – Apr 2026 |
| Lister G-14-103744 | Foundation Energy Management LLC | Scandrill (Morrow) | Wheeler | 1 | 1.1K | 380K | Feb 1993 – Apr 2016 |
| Parks, J.W. -A- G-8-156086 | Foundation Energy Management LLC | Parks (Duffer) | Stephens | 1 | 1.06K | 377K | Sep 1995 – Apr 2013 |
| Elliot O-3-26627 | Foundation Energy Management LLC | Silsbee (U) | Hardin | 1 | 1.05K | 11.4K | Dec 2013 – Feb 2015 |
| Dawson, D. B. G-8-18097 | Foundation Energy Management LLC | Pottsville (Marble Falls) | Hamilton | 1 | 984 | 267K | Jan 1993 – Mar 2019 |
| Marwitz, W. A. G-8-18099 | Foundation Energy Management LLC | Pottsville (Marble Falls) | Hamilton | 1 | 753 | 369K | Jan 1993 – Mar 2019 |
| Trusty Oil Unit O-3-25593 | Foundation Energy Management LLC | Village Mills, East (R) | Hardin | 2 | 422 | 3.9K | Sep 2010 – Jan 2013 |
| Mott, Julia Gas Unit NO.2A G-2-84420 | Foundation Energy Management LLC | Yoakum (Edwards) | De Witt | 1 | 403 | 1.53M | Jan 1993 – Jul 2010 |
| Kuderer Oil Unit II O-3-17966 | Foundation Energy Management LLC | Village Mills, East (X-1) | Hardin | 1 | 372 | 214 | Jan 1993 – May 1993 |
| Nelson, O.C. Fee O-3-17300 | Foundation Energy Management LLC | Silsbee, North (Yegua 3-6900) | Hardin | 1 | 364 | 2.56K | Aug 1994 – Aug 1995 |
| Cunningham, Mary J. O-3-26150 | Foundation Energy Management LLC | Silsbee, North (Yegua 2C) | Hardin | 1 | 351 | 12.3K | Feb 2013 – Mar 2014 |
| Harris, J. W. G-8-40474 | Foundation Energy Management LLC | Pottsville (Marble Falls) | Hamilton | 1 | 282 | 18.3K | Jan 1993 – Mar 2018 |
| Burks, T. J., Estate G-8-40273 | Foundation Energy Management LLC | Pottsville (Marble Falls) | Hamilton | 1 | 275 | 42.7K | Jan 1993 – Mar 2019 |
| Karl G-2-179899 | Foundation Energy Management LLC | Yoakum (Edwards) | De Witt | 1 | 119 | 3.24M | Jul 2000 – Apr 2026 |
| Mott, Julia Gas Unit 2A G-2-208887 | Foundation Energy Management LLC | Yoakum (Edwards) | De Witt | 1 | 117 | 3.87M | Sep 2004 – Apr 2026 |
| Arco et Al G-3-198364 | Foundation Energy Management LLC | Sour Lake | Hardin | 1 | 110 | 35K | Jul 2004 – Dec 2011 |
| Rea, T. K. G-8-175065 | Foundation Energy Management LLC | Pottsville (Marble Falls) | Hamilton | 1 | 53 | 5.87K | Nov 2014 – Mar 2019 |