| Isaacs O-14-9491 | Unit Petroleum Company only | Canadian, SE (Douglas) | Hemphill | 2 | 165K | 762K | Jul 2016 – Apr 2026 |
| Isaacs "D" G-14-268059 | Unit Petroleum Company only | Hemphill (Granite Wash.) | Hemphill | 1 | 114K | 2.13M | Jun 2012 – Apr 2026 |
| Isaacs '212' G-14-269432 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 101K | 2.17M | Jan 2013 – Apr 2026 |
| Isaacs, John C. Jr et Al G-14-260358 | Mewbourne Oil Company only | Canadian, SW. (Granite Wash) | Hemphill | 1 | 100K | 1.91M | Nov 2010 – Apr 2026 |
| Isaacs 1 O-14-9419 | Bce-Mach III LLC only | Mendota, NW. (Douglas, Lo.) | Hemphill | 1 | 98.1K | 322K | Sep 2014 – Sep 2021 |
| Isaacs 207 G-14-265416 | Bce-Mach III LLC only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 82.1K | 2.98M | Aug 2011 – Apr 2026 |
| Isaacs '205' G-14-272159 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 74.7K | 2.52M | Dec 2013 – Apr 2026 |
| Isaacs, John C. Jr., Etal -F- O-14-3993 | BP America Production Company only | Mendota, NW. (Douglas, Lo.) | Hemphill | 4 | 72.4K | 213K | Jan 1993 – May 2009 |
| Isaacs G-14-253295 | Unbridled Resources, LLC only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 69.3K | 3.46M | May 2009 – Apr 2026 |
| Isaacs 148 G-14-272302 | Mmgl Txph, LLC only | Mathers Ranch (Granite Wash) | Hemphill | 1 | 65.7K | 1.7M | Nov 2012 – Apr 2026 |
| Isaacs "B" G-14-258727 | Unit Petroleum Company only | Mendota, NW. (Granite Wash) | Roberts | 1 | 62K | 2.64M | May 2010 – Apr 2026 |
| Isaacs 80 O-14-5243 | Bce-Mach III LLC only | Gem-Hemphill (Douglas Lo.) | Hemphill | 4 | 60.7K | 467K | Jan 1993 – Sep 2023 |
| Isaacs, John et al "G" G-14-263479 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 54.9K | 1.05M | Aug 2011 – Apr 2026 |
| Isaacs 210 G-14-278045 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 53.8K | 1.84M | Jan 2015 – Apr 2026 |
| Isaacs '212' G-14-267228 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 52.9K | 1.16M | Mar 2012 – Apr 2026 |
| Isaacs 125 O-14-7337 | FX Energy Operating, LLC only | Gem-Hemphill (Douglas Lo.) | Hemphill | 1 | 48.8K | 355K | Jan 2000 – Apr 2026 |
| Brunson -18- O-10-32146 | Isaacson Energy Resources, LLC only | Dewey Lake (Strawn) | Glasscock | 1 | 48.3K | 344K | Jan 1993 – Apr 2026 |
| Isaacs G-14-188959 | Bracken Operating, L.L.C. only | Canadian, SE (Douglas) | Hemphill | 1 | 46.7K | 1.09M | Sep 2002 – Mar 2026 |
| Fields-Isaacs O-6-13928 | Sheridan Production Co III, LLC only | Waskom (Gloyd) | Harrison | 1 | 42.8K | 1.12M | Apr 1999 – Jun 2013 |
| John Isaacs et al 'G' G-14-267517 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 40.9K | 877K | May 2012 – Apr 2026 |
| Black Stone Isaacs A-316 G-6-230246 | Anadarko E&P Company LP only | Brookeland (Austin Chalk, 8800) | Jasper | 1 | 39.3K | 3.24M | Jan 2007 – Jul 2008 |
| John Isaacs et al "G" G-14-267160 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 38.2K | 1.07M | Jan 2012 – Apr 2026 |
| Isaacs, John C. Jr. et Al G-14-275037 | Mewbourne Oil Company only | Canadian, SW. (Granite Wash) | Hemphill | 1 | 37.5K | 1.38M | Jun 2014 – Apr 2026 |
| Isaacs 1 G-14-237514 | Bce-Mach III LLC only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 35.2K | 937K | May 2008 – Apr 2026 |
| Isaacs "C" 196 G-14-249470 | Mmgl Txph, LLC only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 34.1K | 1.92M | Nov 2008 – Apr 2026 |
| Isaacs '205' G-14-276226 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 32.9K | 993K | Sep 2014 – Apr 2026 |
| Isaacs -209- G-14-76665 | Mountainside Energy Operating, L only | Canadian, SW. (Granite Wash) | Hemphill | 1 | 32.1K | 2.3M | Jan 1993 – Nov 2024 |
| Isaacs G-14-248211 | Unbridled Resources, LLC only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 32.1K | 2.11M | Nov 2008 – Apr 2026 |
| Black Stone Isaacs A-316 G-3-238899 | Anadarko E&P Onshore LLC only | Magnolia Springs (Austin Chalk) | Jasper | 1 | 31.7K | 2.1M | Aug 2008 – Feb 2016 |
| Isaacs -208- O-14-6917 | Chevron U. S. A. Inc. only | Canadian, SE (Douglas) | Hemphill | 1 | 31.5K | 287K | Aug 1993 – Feb 2007 |
| Isaacs 208 G-14-278400 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 30.5K | 2.16M | Jul 2015 – Apr 2026 |
| Isaacs, John C. Jr. "K" O-14-7084 | Mmgl Txph, LLC only | Mendota, NW. (Cherokee) | Hemphill | 2 | 30.3K | 1.41M | Nov 1995 – Apr 2026 |
| Isaacs, John C. Jr et Al G-14-255701 | Mewbourne Oil Company only | Canadian, SW. (Granite Wash) | Hemphill | 1 | 27.5K | 1.22M | Feb 2010 – Apr 2026 |
| Isaacs -208- O-14-5550 | Highmark Energy Operating, LLC only | Canadian, SW. (Granite Wash) | Hemphill | 1 | 27.1K | 1.06M | Jan 1993 – Dec 2024 |
| Isaacs 1 G-14-161400 | Bce-Mach III LLC only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 26.4K | 1.63M | Nov 1996 – Apr 2026 |
| Isaacs -209- O-14-5527 | Chevron U. S. A. Inc. only | Canadian SW. (Douglas,lower) | Hemphill | 3 | 26.2K | 499K | Jan 1993 – Aug 2006 |
| Isaacs G-14-198502 | Mountainside Energy Operating, L only | Canadian, SW. (Granite Wash) | Hemphill | 1 | 26K | 1.89M | Jun 2003 – Mar 2026 |
| Isaacs 148 G-14-272258 | Mmgl Txph, LLC only | Mathers Ranch (Granite Wash) | Hemphill | 1 | 24.9K | 856K | Oct 2012 – Feb 2026 |
| Isaacs 'C' 196 G-14-268834 | Mmgl Txph, LLC only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 24.8K | 1.09M | Jan 2013 – Apr 2026 |
| Isaacs '209' G-14-276181 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 24.5K | 1.27M | Jul 2014 – Apr 2026 |
| Isaacs G-14-239813 | Mmgl Txph, LLC only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 23.5K | 1.36M | Jul 2008 – Apr 2026 |
| Isaacs -210- G-14-101069 | Mountainside Energy Operating, L only | Canadian, SW. (Granite Wash) | Hemphill | 1 | 23.2K | 2.41M | Jan 1993 – Mar 2026 |
| Isaacs G-14-201103 | Mountainside Energy Operating, L only | Canadian, SW. (Granite Wash) | Hemphill | 1 | 23.2K | 1.76M | Mar 2004 – May 2020 |
| Isaacs 208 G-14-173810 | Mountainside Energy Operating, L only | Canadian, SW. (Granite Wash) | Hemphill | 1 | 21.3K | 1.79M | Jul 1999 – Mar 2026 |
| Isaacs 1 G-14-165635 | Bce-Mach III LLC only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 19K | 143K | Aug 1997 – Apr 2026 |
| Isaacs 204 G-14-123569 | Cimarex Energy Co. of Colorado only | Red Deer Creek (Morrow, Upper) | Hemphill | 1 | 18.8K | 1.62M | Jan 1993 – Apr 2009 |
| Isaacs 195 G-14-268175 | Mmgl Txph, LLC only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 18.4K | 927K | Nov 2012 – Apr 2026 |
| Isaacs "C" G-14-235638 | Mmgl Txph, LLC only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 17.6K | 911K | Dec 2007 – Feb 2016 |
| Isaacs -211- G-14-82244 | Chevron U. S. A. Inc. only | Canadian, SW. (Granite Wash) | Hemphill | 1 | 16K | 547K | Jan 1993 – Sep 2011 |
| Isaacs -210- G-14-62063 | Highmark Energy Operating, LLC only | Canadian, SW. (Granite Wash) | Hemphill | 1 | 15.8K | 906K | Jan 1993 – Jan 2026 |