| Nelson Trust G-3-152795 | TC Oil and Gas, LLC only | Lost Ranch (LY-4 Yegua) | Liberty | 1 | 274K | 1.43M | Dec 1994 – May 2007 |
| Nelson, C. S. G-2-94294 | Sandel Operating Company only | Limes (Wilcox 9900) | Live Oak | 1 | 136K | 4.19M | Jan 1993 – Jul 2023 |
| Mikeska, George Jr. Unit G-3-159407 | Crimson Exploration Oper., Inc. only | Nelsonville ( Wilcox 10,400) | Austin | 1 | 80.7K | 1.27M | May 1996 – Aug 2010 |
| Nelson, C. S. G-2-152286 | Sandel Operating Company only | George West, West (9500) | Live Oak | 1 | 76.4K | 5.6M | Nov 1994 – Apr 2026 |
| Nelson, C.S. G-2-148741 | Pogo Producing Company LLC only | Limes (Wilcox F-1) | Live Oak | 1 | 53.2K | 2.39M | Feb 1994 – Jan 2006 |
| Nelson, C. S. Trust et Al G-2-147165 | CLR Secondary Recovery, LLC only | Limes (Wilcox F-1) | Live Oak | 1 | 47.5K | 1.92M | Oct 1993 – Jan 2016 |
| Nelson, C. S. G-2-174924 | Sandel Operating Company only | George West, West (10430) | Live Oak | 1 | 47.5K | 958K | Jun 1999 – Aug 2025 |
| Nelson, C. S. G-2-217590 | Sandel Operating Company only | George West, West (10430) | Live Oak | 1 | 43.8K | 622K | Dec 2005 – Apr 2026 |
| Nelson, C. S. G-2-111264 | OXY USA Inc. only | George West, West (10200) | Live Oak | 1 | 42K | 3.11M | Jan 1993 – Jan 2014 |
| Godfrey Nelson Gas Unit G-2-248652 | Kebo Oil & Gas, Inc. only | Houdmann-Buxkamper (9950) | Live Oak | 1 | 38K | 516K | Jan 2009 – Apr 2026 |
| Mikeska, Jerry G-3-164970 | Magnum Producing, LP only | Nelsonville ( Wilcox 10,400) | Austin | 1 | 35.8K | 2.4M | Aug 1997 – Mar 2026 |
| Nelson, B. P. A-40 G-3-207707 | Union Gas Operating Company only | Slessinger (Middle Wilcox) | Hardin | 1 | 35.6K | 902K | Oct 2004 – Apr 2026 |
| Marshall "B" G-2-200715 | Estate of James L. Nelson only | Slick, S. (Wilcox "J") | Goliad | 1 | 35.3K | 1.74M | May 2004 – Jul 2024 |
| Fossil Donelson Gas Unit #1 G-5-218176 | Contrast Energy, LLC only | Hilltop Resort (Pettet) | Leon | 1 | 34.3K | 2.06M | May 2006 – Jun 2024 |
| Donelson 15 G-14-265000 | Unbridled Resources, LLC only | Buffalo Wallow (Granite Wash) | Wheeler | 1 | 33.8K | 2.47M | Nov 2011 – Apr 2026 |
| Nelson, C. S. G-2-272720 | Sandel Operating Company only | George West, West (9500) | Live Oak | 1 | 32.5K | 1.1M | Apr 2014 – Apr 2026 |
| Nelson, C.S. G-2-147033 | Samson Lone Star LP only | Limes (Wilcox F-1) | Live Oak | 1 | 30.8K | 1.48M | Oct 1993 – Aug 2002 |
| Donelson 15 G-14-282375 | Unbridled Resources, LLC only | Buffalo Wallow (Granite Wash) | Wheeler | 1 | 28.2K | 636K | Jan 2015 – Apr 2026 |
| Nelson, C. L. Trust et Al G-2-96089 | Samson Lone Star, LLC only | Limes (Wilcox 9900) | Live Oak | 1 | 28.2K | 1.33M | Jan 1993 – Jun 2000 |
| E. Henke G-2-242488 | Estate of James L. Nelson only | Weesatche, West (Cook Mt.) | Goliad | 1 | 25.8K | 65.9K | Sep 2008 – Mar 2026 |
| Reynolds, Nelson G-5-97184 | Diversified Production LLC only | Personville, N (CV Consolidated) | Limestone | 1 | 24.5K | 1.16M | Jan 1993 – Apr 2026 |
| Nelson, C. S. G-2-94293 | Sandel Operating Company only | Limes (Wilcox 9500) | Live Oak | 1 | 21.6K | 2.51M | Jan 1993 – Apr 2026 |
| Phillips, H. S. G-3-171378 | | Nelsonville ( Wilcox 10,400) | Austin | 1 | 19.3K | 909K | Jan 1993 – Jul 2000 |
| Nelson Trust G-3-142921 | Greenhill Petroleum Corporation only | Numbat (LY-6 Cook Mountain) | Liberty | 1 | 18.1K | 72K | Jan 1993 – Dec 1994 |
| Harlan Nelson G-2-258706 | Kebo Oil & Gas, Inc. only | Houdman (Wilcox 8200) | Live Oak | 1 | 12.8K | 916K | Nov 2010 – Apr 2026 |
| Nelson East Blessing Unit G-3-233390 | Clearly Petroleum, LLC only | Pheasant, SW. (Frio 11000) | Matagorda | 1 | 12.3K | 160K | Dec 2007 – Jan 2017 |
| Caswell Snelson G-13-261995 | Scout Energy Management LLC only | Newark, East (Barnett Shale) | Montague | 1 | 11.3K | 365K | Jul 2011 – Jun 2015 |
| Surovik, Frank G-3-182413 | Magnum Producing, LP only | Nelsonville ( Wilcox 10,400) | Austin | 1 | 11K | 381K | Nov 2000 – May 2006 |
| Donelson 15 G-14-233461 | Unbridled Resources, LLC only | Buffalo Wallow (Granite Wash) | Wheeler | 1 | 9.71K | 430K | Sep 2007 – Mar 2018 |
| Mikeska G-3-173745 | Crimson Exploration Oper., Inc. only | Nelsonville (Wilcox 10,800) | Austin | 1 | 9.49K | 232K | May 1999 – Aug 2010 |
| Chapman Brothers G-2-214134 | Estate of James L. Nelson only | Poehler (Yegua 4700) | Goliad | 1 | 9.4K | 117K | Oct 2005 – Apr 2010 |
| Ideus G-2-182522 | Estate of James L. Nelson only | Gottschalt (Third Yegua) | Goliad | 1 | 9.2K | 313K | Sep 2000 – Feb 2017 |
| Rau G-2-139306 | Estate of James L. Nelson only | Weser (Recklaw 7560) | Goliad | 1 | 8.92K | 1.22M | Jan 1993 – Mar 2026 |
| Altman, William B. G-2-89864 | Estate of James L. Nelson only | Boyce (Recklaw) | Goliad | 1 | 8.02K | 323K | Jan 1993 – Mar 2026 |
| Nelson, Wayne G-3-184844 | Eca Holdings, L.P. only | Tavener, N. (Cook MTN-1) | Fort Bend | 1 | 7.74K | 156K | Jan 2001 – Apr 2002 |
| Alexander, George G-3-148822 | Magnum Producing, LP only | Nelsonville ( Wilcox 10,400) | Austin | 1 | 6.82K | 133K | Aug 1993 – Jan 2009 |
| Smith Gas Unit G-2-99848 | Nelson, James L. only | Pena, S.W. (7420) | Karnes | 1 | 6.73K | 159K | Jan 1993 – Jan 1998 |
| Mikeska, George Jr. Unit G-3-140120 | Pierce Junction Petroleum Inc. only | Nelsonville ( Wilcox 10,400) | Austin | 1 | 6.72K | 214K | Jan 1993 – Jul 1994 |
| Mikeska, George Unit G-3-142345 | Magnum Producing & Operating Co. only | Nelsonville ( 8,750) | Austin | 1 | 6.6K | 213K | Jan 1993 – Jun 1997 |
| Chapman, M.M. et UX G-2-155084 | Estate of James L. Nelson only | Poehler (Yegua -B-) | Goliad | 1 | 6.45K | 181K | Jul 1995 – Oct 2017 |
| Caswell Snelson G-13-261996 | Scout Energy Management LLC only | Newark, East (Barnett Shale) | Montague | 1 | 6.1K | 239K | Jul 2011 – Oct 2015 |
| Caswell Snelson G-13-261916 | Scout Energy Management LLC only | Newark, East (Barnett Shale) | Montague | 1 | 5.6K | 164K | Aug 2011 – Jun 2015 |
| Phillips, H. S. G-3-203940 | Magnum Producing, LP only | Nelsonville (Wilcox 10,800) | Austin | 1 | 5.09K | 84.9K | May 2004 – Jan 2007 |
| Donelson 15 G-14-239571 | Unbridled Resources, LLC only | Buffalo Wallow (Granite Wash) | Wheeler | 1 | 4.89K | 243K | Jun 2008 – Nov 2013 |
| Ideus Unit G-2-161801 | Estate of James L. Nelson only | Weesatche, West (Luling) | Goliad | 1 | 4.71K | 566K | Sep 1996 – Feb 2017 |
| Urban-Foerster Unit G-2-89214 | Estate of James L. Nelson only | Poehler (Slick-Wilcox 8000) | Goliad | 1 | 4.11K | 728K | Jan 1993 – Mar 2026 |
| Reynolds, Nelson G-5-162150 | Diversified Production LLC only | Personville, N (CV Consolidated) | Limestone | 1 | 3.87K | 1.27M | Feb 1997 – Apr 2026 |
| Nelson G-2-234239 | Inland Ocean, Inc. only | Clayton (Wilcox 6875) | Live Oak | 1 | 3.87K | 57.8K | Mar 2008 – Jan 2010 |
| Nelson G-14-185244 | Mewbourne Oil Company only | Spearman, East (Atoka) | Hansford | 1 | 3.67K | 1.04M | Aug 2001 – Apr 2026 |
| Nelson 'A' G-2-291654 | MB Energy, LLC only | Clayton (Slick 6450) | Live Oak | 1 | 3.36K | 217K | Jul 2021 – Mar 2024 |