| Key, Hobart O-6-5981 | King Operating Corporation only | Gooch (Pettit) | Harrison | 1 | 36.2K | 108K | Jan 1993 – Sep 2021 |
| Blocker-Key O-6-14797 | Smith Resources, L.L.C. only | Bethany (Travis Peak Cons.) | Harrison | 1 | 30K | 350K | Mar 2008 – Apr 2026 |
| Blocker-Key O-6-14238 | Smith Resources, Inc. only | Bethany (Travis Peak a Sand) | Harrison | 1 | 24.4K | 232K | Aug 2003 – Feb 2008 |
| Cargill, G. E. O-6-11943 | Brammer-Keystone Energy, L.L.C. only | Jonesville (Travis Peak 5940) | Harrison | 2 | 20.7K | 97.9K | Jan 1993 – Sep 1999 |
| Key, Beatrice Gas Unit G-6-239201 | Diversified Production LLC only | Carthage, North (Cotton Valley) | Harrison | 1 | 16.5K | 1.46M | Jul 2008 – Feb 2026 |
| Keys, Patsy G-6-213908 | Brookston Energy, Inc. only | Carthage, North (Cotton Valley) | Harrison | 1 | 15K | 1.77M | Oct 2004 – Apr 2026 |
| Whipkey Gas Unit G-6-276441 | Merit Energy Company only | Woodlawn (Cotton Valley) | Harrison | 1 | 14.1K | 3M | Nov 2014 – Apr 2026 |
| Key, Beatrice Gas Unit G-6-238676 | Diversified Production LLC only | Woodlawn (Cotton Valley) | Harrison | 1 | 13.9K | 1.08M | Apr 2008 – Apr 2026 |
| Vef Key Unit G-6-221733 | Smith Resources, L.L.C. only | Carthage (Cotton Valley) | Harrison | 1 | 12.8K | 345K | May 2006 – May 2020 |
| Key, Beatrice Gas Unit G-6-239128 | Diversified Production LLC only | Carthage, North (Cotton Valley) | Harrison | 1 | 11.3K | 1.78M | May 2008 – Feb 2026 |
| Key, Beatrice Gas Unit G-6-239203 | Diversified Production LLC only | Carthage, North (Cotton Valley) | Harrison | 1 | 7.52K | 627K | Jul 2008 – Apr 2026 |
| Key, Beatrice Gas Unit G-6-238135 | Diversified Production LLC only | Woodlawn (Cotton Valley) | Harrison | 1 | 6.03K | 501K | Feb 2008 – Aug 2019 |
| Key, Albert G-6-250721 | Buffco Production Inc. only | Carthage, North (Cotton Valley) | Harrison | 1 | 5.47K | 130K | Dec 2009 – Mar 2015 |
| Keys, Patsy G-6-209744 | Brookston Energy, Inc. only | Carthage, North (Cotton Valley) | Harrison | 1 | 5.22K | 482K | Jan 2005 – Nov 2016 |
| Key, Beatrice Gas Unit G-6-238677 | Diversified Production LLC only | Woodlawn (Cotton Valley) | Harrison | 1 | 5.19K | 412K | Apr 2008 – Nov 2017 |
| Keys, Patsy G-6-213224 | Brookston Energy, Inc. only | Carthage, North (Cotton Valley) | Harrison | 1 | 4.94K | 297K | May 2005 – Oct 2024 |
| Key Estate G-6-30009 | GMX Resources Inc. only | Carthage (Pettit, Lower Gas) | Harrison | 1 | 4.89K | 368K | Jul 1993 – Mar 2008 |
| Key, Beatrice Gas Unit G-6-218367 | Diversified Production LLC only | Woodlawn (Cotton Valley) | Harrison | 1 | 4.72K | 416K | Dec 2005 – Feb 2023 |
| Keys, Patsy G-6-213231 | Brookston Energy, Inc. only | Carthage, North (Cotton Valley) | Harrison | 1 | 4.71K | 753K | Jun 2005 – Apr 2026 |
| Keys, Patsy G-6-204562 | Brookston Energy, Inc. only | Carthage, North (Cotton Valley) | Harrison | 1 | 4.43K | 542K | Jun 2004 – Apr 2026 |
| Faulconer-Key G-6-145040 | Smith Resources, L.L.C. only | Ware (Cotton Valley) | Harrison | 1 | 3.65K | 860K | Mar 1993 – Oct 2013 |
| Keys, Patsy G-6-214826 | Brookston Energy, Inc. only | Carthage, North (Cotton Valley) | Harrison | 1 | 3.19K | 399K | Jun 2005 – Apr 2026 |
| Key G-6-145262 | Comstock Oil & Gas, LLC only | Ware (Cotton Valley) | Harrison | 1 | 3.06K | 632K | Apr 1993 – Jul 2017 |
| Key G-6-227011 | Comstock Oil & Gas, LLC only | Ware (Cotton Valley) | Harrison | 1 | 2.8K | 548K | Oct 2006 – Apr 2026 |
| Key, Beatrice Gas Unit G-6-236974 | Diversified Production LLC only | Woodlawn (Cotton Valley) | Harrison | 1 | 2.73K | 246K | Feb 2008 – Nov 2013 |
| Keys, Patsy G-6-218042 | Brookston Energy, Inc. only | Carthage, North (Cotton Valley) | Harrison | 1 | 2.35K | 323K | Nov 2005 – Oct 2024 |
| Cargill, G. E. O-6-13391 | Brammer-Keystone Energy, L.L.C. only | Waskom (Riley 6225) | Harrison | 1 | 2.27K | 49.5K | Jun 1994 – Nov 1995 |
| Weiser, Susanna Key G-6-250067 | Buffco Production Inc. only | Carthage, North (Cotton Valley) | Harrison | 1 | 2.13K | 202K | Nov 2009 – Jun 2024 |
| Vef Key Unit O-6-14635 | Smith Resources, L.L.C. only | Beckville, N. (Travis Peak) | Harrison | 1 | 2.09K | 45.2K | May 2006 – Oct 2008 |
| Albert Key O-6-15392 | Buffco Production Inc. only | Bethany (Travis Peak Cons.) | Harrison | 1 | 1.94K | 8.44K | Apr 2015 – Nov 2024 |
| Key, Beatrice Gas Unit G-6-283505 | Diversified Production LLC only | Woodlawn (Rodessa) | Harrison | 1 | 1.81K | 316K | Nov 2017 – Apr 2025 |
| Key, Beatrice Gas Unit G-6-236976 | Sabine Oil & Gas Corporation only | Woodlawn (Cotton Valley) | Harrison | 1 | 1.67K | 276K | Mar 2008 – Jul 2018 |
| Keys, Warren G-6-155214 | Petrogas Energy Services, LLC only | Blocker (Travis Peak) | Harrison | 1 | 1.19K | 237K | May 1995 – Dec 2001 |
| Gray-Hickey G-6-70609 | Shelby Operating Company only | Waskom (Cotton Valley) | Harrison | 1 | 1.04K | 530K | Feb 1993 – Apr 2026 |
| Key, Beatrice Gas Unit G-6-284829 | Diversified Production LLC only | Woodlawn (Rodessa) | Harrison | 1 | 738 | 408K | Jul 2018 – Oct 2024 |
| Faulconer-Key G-6-146519 | Smith Resources, L.L.C. only | Ware (Cotton Valley) | Harrison | 1 | 592 | 322K | Aug 1993 – Feb 2014 |
| Weiser, Susanna Key G-6-297854 | Buffco Production Inc. only | Carthage (Travis Peak) | Harrison | 1 | 472 | 1.46K | Sep 2024 – Apr 2026 |
| Key Deep GU G-6-262310 | Sabine Energy Inc. only | Carthage (Haynesville Shale) | Harrison | 1 | 274 | 2.21M | May 2011 – Apr 2026 |
| Williams, Ireland G-6-95953 | Brammer-Keystone Energy, L.L.C. only | Waskom (Cotton Valley) | Harrison | 1 | 103 | 1.46K | Jan 1993 – Feb 1993 |
| Key Gas Unit G-6-29409 | Smith Resources, Inc. only | Bethany (Pettit) | Harrison | 1 | 0 | 454K | Feb 1993 – Jul 2015 |
| Winston 'C' G-6-159228 | Hawkeye Drilling Co. only | Wildcat | Harrison | 1 | 0 | 0 | — |
| Abney, C. M. G-6-158623 | Hawkeye Drilling Co. only | Longwood (Nacatoch) | Harrison | 1 | 0 | 0 | — |
| Albert Key G-6-299622 | Buffco Production Inc. only | Bethany (Travis Peak Cons.) | Harrison | 1 | 0 | 69 | Mar 2025 – Mar 2025 |
| Key O-6-4856 | Herbst Resources, Inc. only | Longwood (Goodland Lime) | Harrison | 4 | 0 | 0 | — |
| Pierce, Reuben G-6-150275 | Brammer-Keystone Energy, L.L.C. only | Waskom (Travis Peak 6385 Sand) | Harrison | 1 | 0 | 24.1K | Mar 1994 – Sep 1998 |
| McLofflin Gas Unit G-6-150012 | Brammer-Keystone Energy, L.L.C. only | Waskom (Travis Peak 7) | Harrison | 1 | 0 | 500K | May 1994 – Feb 1999 |
| McLofflin Gas Unit G-6-148911 | Brammer-Keystone Energy, L.L.C. only | Waskom (Travis Peak 7) | Harrison | 1 | 0 | 279K | Jan 1994 – Nov 1996 |
| Ireland Williams Gas Unit O-6-13637 | Brammer-Keystone Energy, L.L.C. only | Waskom (Pettit, Upper) | Harrison | 1 | 0 | 0 | — |