| Carter, Louise O-5-3430 | Jetta Operating Company, Inc. only | Alabama Ferry (Glenrose D, West) | Leon | 1 | 53.2K | 702K | by Jan 1993 – Mar 2014 |
| Lipsey O-6-15005 | Quantum Oil & Gas Corporation only | Navarro Crossing (Woodbine) | Leon | 1 | 52.7K | 0 | Oct 2010 – Mar 2021 |
| Robeson O-5-3895 | Maximus Operating, Ltd. only | Pleasant Ridge (Woodbine) | Leon | 1 | 52.4K | 8 | May 2009 – Aug 2026 |
| Jackson, Ron G-5-129516 | Flamingo Oil & Gas only | Eileen Sullivan (Glen Rose) | Leon | 1 | 52.2K | 3.01M | by Jan 1993 – Feb 2011 |
| Knight, Sam O-5-3370 | Deguello Operating LLC only | Centerville, S. (Woodbine W-1) | Leon | 1 | 51.6K | 6.82K | by Jan 1993 – Nov 2019 |
| Nash Bros Unit O-3-26810 | Deguello Operating LLC only | Halliday (Woodbine) | Leon | 1 | 49.8K | 85K | May 2013 – Dec 2023 |
| Cooper O-5-3125 | HD Operating Co, LLC only | Alabama Ferry (Glenrose D, West) | Leon | 1 | 49.6K | 61.9K | by Jan 1993 – Dec 2025 |
| Bunyard O-3-25932 | Deguello Operating LLC only | Halliday (Woodbine) | Leon | 1 | 49.1K | 85.6K | Nov 2011 – May 2021 |
| Fossil Wildman Trust Unit No. 3 O-5-3941 | Contrast Energy, LLC only | Hilltop Resort (Glen Rose 8498) | Leon | 1 | 48.2K | 8.87K | Mar 2011 – Jun 2025 |
| Rowfu (Harris "B") O-5-3814 | XTO Energy Inc. only | Red Oak (Dexter) | Leon | 1 | 48.2K | 128K | Oct 2005 – Aug 2011 |
| Wells, Maxie W. O-5-3075 | Quantum Oil & Gas Corporation only | Alabama Ferry (Glenrose D, West) | Leon | 1 | 46.1K | 320K | by Jan 1993 – Jan 2024 |
| Lewis, C. L. O-5-2604 | Roberts & Hammack Inc. only | Red Oak (Sub-Clarksville) | Leon | 3 | 45.4K | 55.2K | by Jan 1993 – Aug 2026 |
| Wall Ranch O-3-27234 | Oak Energy, LLC only | Halliday (Woodbine) | Leon | 1 | 45.3K | 1.88K | Oct 2014 – Mar 2023 |
| Dotson, Alice "A" O-5-2442 | Roberts & Hammack Inc. only | Red Oak (Sub-Clarksville) | Leon | 3 | 43.9K | 44.7K | by Jan 1993 – Aug 2026 |
| Sand Hill Farm C-3 O-5-3888 | Tag Operating Company, Inc. only | Oakwood Dome (Woodbine) | Leon | 1 | 43.6K | 18 | Jan 2009 – Aug 2026 |
| Sullivan, T.A. Unit O-3-14675 | Etx Energy, LLC only | Halliday (Woodbine) | Leon | 2 | 43K | 215 | by Jan 1993 – May 2018 |
| Ward O-3-22354 | Carr Resources, Inc. only | Halliday (Woodbine) | Leon | 1 | 42.8K | 18K | Mar 1994 – Mar 2014 |
| Lane O-3-20000 | Goldsmith Operating, LLC only | Halliday (Woodbine) | Leon | 1 | 42.7K | 19.3K | by Jan 1993 – Mar 2026 |
| Rowfu (Coleman) O-5-3817 | XTO Energy Inc. only | Red Oak (Dexter) | Leon | 1 | 42.1K | 45.9K | Feb 2006 – May 2010 |
| Hill, James D. O-5-3053 | Pitco Investments, Ltd. only | Alabama Ferry (Glenrose D, West) | Leon | 3 | 41.9K | 438K | by Jan 1993 – Oct 2003 |
| Sullivan, Joe A. Estate Unit O-5-3050 | Lakeshore Operating, LLC only | Alabama Ferry (Glenrose D, West) | Leon | 2 | 41.9K | 128K | by Jan 1993 – Aug 2026 |
| Fossil Fridkin-Kaufman O-5-3514 | Fossil Operating, Inc. only | Hilltop Resort (Austin Chalk) | Leon | 1 | 41.1K | 260 | Oct 1995 – May 2003 |
| Davis Heirs O-3-24314 | Etx Energy, LLC only | Halliday (Woodbine) | Leon | 1 | 40.5K | 47.3K | Nov 2002 – Jul 2013 |
| Wallrath O-5-3948 | Allied Operating Texas, LLC only | Centerville, S. (Woodbine W-1) | Leon | 1 | 40.3K | 0 | Apr 2011 – Nov 2011 |
| Seale O-3-26692 | Roberts & Hammack Inc. only | BSR (Sub-Clarksville) | Leon | 1 | 40.3K | 22 | May 2013 – Aug 2026 |
| Sullivan, Gordon B. O-5-3068 | Treadstone Energy Partners, LLC only | Alabama Ferry (Glenrose D, West) | Leon | 3 | 40.3K | 74.2K | by Jan 1993 – Sep 2012 |
| Knight, Sam O-5-3400 | Etx Energy, LLC only | Pleasant Ridge (Woodbine) | Leon | 1 | 39.9K | 21 | by Jan 1993 – Jul 2013 |
| Lacey Heirs O-5-2661 | Amerril Energy LLC only | Pleasant Ridge (Woodbine) | Leon | 2 | 39.9K | 9.02K | by Jan 1993 – May 2013 |
| Pierce O-3-19879 | Goldsmith Operating, LLC only | Halliday (Woodbine) | Leon | 1 | 39.9K | 19.9K | by Jan 1993 – Jun 2026 |
| Largent Heirs O-5-3064 | Flamingo Oil & Gas only | Alabama Ferry (Glenrose D, West) | Leon | 4 | 39.6K | 275K | by Jan 1993 – Jul 2016 |
| Daughtry Gas Unit G-5-236025 | Atlas Operating LLC only | Bear Grass (Travis Peak) | Leon | 1 | 39.4K | 2.38M | Mar 2008 – Jun 2026 |
| Nash, William O-5-3452 | CLR Secondary Recovery, LLC only | Evans Chapel (Sub-Clarksville) | Leon | 1 | 38.6K | 25.2K | Apr 1993 – Sep 2023 |
| Johnson O-5-3489 | Texas Royalty Corp. only | Red Oak (FB-a, Sub Clarksville) | Leon | 1 | 38.2K | 208K | Jul 1994 – Feb 2023 |
| Jeter O-5-3877 | Roberts & Hammack Inc. only | Red Oak (Dexter) | Leon | 1 | 38.1K | 23.6K | Jun 2008 – Aug 2026 |
| Fossil Hillegeist O-5-3507 | Fossil Operating, Inc. only | Hilltop Resort (Austin Chalk) | Leon | 1 | 36.4K | 362 | Mar 1995 – Feb 2010 |
| Cox, Phillip O-6-14379 | Wheeler Operating Corporation only | Navarro Crossing (Woodbine) | Leon | 1 | 35.9K | 12.8K | Feb 2005 – Jan 2010 |
| Holsey O-5-3137 | Torch Operating Company only | Alabama Ferry (Glenrose "D") | Leon | 3 | 35.8K | 77.8K | by Jan 1993 – Mar 1993 |
| Robinson-Terry G-5-131703 | Flamingo Oil & Gas only | Eileen Sullivan (Glen Rose) | Leon | 1 | 35.3K | 1.85M | by Jan 1993 – Aug 2026 |
| Gillen, Ira G-5-175055 | Valence Operating Company only | Bear Grass (Travis Peak) | Leon | 1 | 35.3K | 3.3M | Oct 1999 – Aug 2026 |
| Rowfu (Anderson, C.) O-5-3837 | XTO Energy Inc. only | Red Oak (Dexter) | Leon | 1 | 34.8K | 35.4K | Aug 2006 – Aug 2011 |
| McBride Gas Unit No. 1 G-5-282970 | Diversified Production LLC only | Branton (Rodessa) | Leon | 1 | 34.8K | 2.82M | May 2017 – Aug 2026 |
| Marshall Unit O-3-15728 | Etx Energy, LLC only | Halliday (Woodbine) | Leon | 2 | 34.6K | 38 | by Jan 1993 – May 2013 |
| Polly O-5-3071 | Thomfield Energy LLC only | Alabama Ferry (Glenrose D, West) | Leon | 1 | 34.5K | 383K | by Jan 1993 – Aug 2026 |
| 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 |
| Lemke G-5-129074 | Flamingo Oil & Gas only | Eileen Sullivan (Glen Rose) | Leon | 1 | 34.1K | 1.76M | by Jan 1993 – Aug 2026 |
| Spring Creek O-5-3081 | Carr Resources, Inc. only | Alabama Ferry (Glenrose D, West) | Leon | 2 | 34.1K | 627K | by Jan 1993 – Dec 2024 |
| Rowfu (Harris, Bobby Ray) O-5-3849 | XTO Energy Inc. only | Red Oak (Dexter) | Leon | 2 | 33.8K | 63.4K | Jun 2007 – Aug 2011 |
| Sam Leathers Trust (Allocation) O-3-26937 | Trailblazer Energy Resources,llc only | Halliday (Woodbine) | Leon | 1 | 33.8K | 74.1K | Jun 2013 – Jul 2018 |
| Ward, Elmer O-5-2907 | J.F.W. Equipment, Inc. only | Pleasant Ridge (Woodbine) | Leon | 1 | 33.6K | 5.61K | by Jan 1993 – Mar 2023 |
| Champion Ranch "B" O-5-3504 | Amerril Energy LLC only | Centerville, S. (Woodbine W-1) | Leon | 1 | 32.4K | 151 | Feb 1995 – Aug 2014 |