| Leona Unit O-5-1871 | Marquee Corporation only | Leona (Sub-Clarksville) | Leon | 6 | 157K | 21 | by Jan 1993 – Jul 2020 |
| Nestor O-5-3413 | Texas Royalty Corp. only | Red Oak (FB-a, Sub Clarksville) | Leon | 1 | 74.9K | 200 | by Jan 1993 – May 2021 |
| 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 |
| 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 |
| Seale O-3-26692 | Roberts & Hammack Inc. only | BSR (Sub-Clarksville) | Leon | 1 | 40.3K | 22 | May 2013 – Aug 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 |
| Pipes O-5-3429 | Texas Royalty Corp. only | Red Oak (FB-a, Sub Clarksville) | Leon | 1 | 31.9K | 2.02K | by Jan 1993 – May 2018 |
| Black, W. D. O-5-2019 | Roberts & Hammack Inc. only | Red Oak (Sub-Clarksville) | Leon | 2 | 30K | 99.2K | by Jan 1993 – Aug 2026 |
| Alston-Guokas Oil Unit O-5-3008 | Roberts & Hammack Inc. only | Red Oak (Sub-Clarksville) | Leon | 1 | 22.9K | 17.5K | by Jan 1993 – Aug 2026 |
| Guokas, Charles O-5-2890 | Roberts & Hammack Inc. only | Red Oak (Sub-Clarksville) | Leon | 1 | 21.7K | 11.8K | by Jan 1993 – Aug 2026 |
| Powers, E. B. O-5-2108 | Roberts & Hammack Inc. only | Red Oak (Sub-Clarksville) | Leon | 1 | 21.3K | 44.6K | by Jan 1993 – Aug 2026 |
| Allbritton, Bessie "C" O-5-2398 | Roberts & Hammack Inc. only | Red Oak (Sub-Clarksville) | Leon | 1 | 20.1K | 461 | by Jan 1993 – Aug 2026 |
| Oliver & Tracy O-5-1959 | Roberts & Hammack Inc. only | Red Oak (Sub-Clarksville) | Leon | 1 | 19.6K | 461 | by Jan 1993 – Aug 2026 |
| Donahoe, James O-5-2966 | Roberts & Hammack Inc. only | Red Oak (Sub-Clarksville) | Leon | 1 | 18K | 1.06K | by Jan 1993 – Aug 2026 |
| Leathers O-5-3800 | Deguello Operating LLC only | Red Oak (Subclarksville 6060) | Leon | 1 | 17.9K | 0 | Oct 2004 – Aug 2026 |
| Belger, R. Unit O-5-2577 | Roberts & Hammack Inc. only | Red Oak (Sub-Clarksville) | Leon | 1 | 17.4K | 20.3K | by Jan 1993 – Aug 2026 |
| Lewis, C. L. Oil Unit O-5-2898 | Roberts & Hammack Inc. only | Red Oak (Sub-Clarksville) | Leon | 1 | 15.6K | 13.9K | by Jan 1993 – Aug 2026 |
| Caldwell "State" O-5-3013 | Roberts & Hammack Inc. only | Red Oak (Sub-Clarksville) | Leon | 2 | 15.4K | 37.4K | by Jan 1993 – Aug 2026 |
| Caldwell O-5-2812 | Roberts & Hammack Inc. only | Red Oak (Sub-Clarksville) | Leon | 1 | 15K | 26.8K | by Jan 1993 – Aug 2026 |
| Dale Gas Unit NO.1 G-5-131904 | Texas Royalty Corp. only | Red Oak (FB-a, Sub Clarksville) | Leon | 1 | 14K | 939K | by Jan 1993 – Sep 2022 |
| Kendall & Baker, et al, Oil Unit O-5-1764 | Roberts & Hammack Inc. only | Red Oak (Sub-Clarksville) | Leon | 2 | 14K | 353 | by Jan 1993 – Aug 2026 |
| Dale G.U. No. 2 G-5-135318 | Texas Royalty Corp. only | Red Oak (FB-a, Sub Clarksville) | Leon | 1 | 14K | 939K | by Jan 1993 – Sep 2022 |
| Allbritton, Bessie O-5-1790 | Roberts & Hammack Inc. only | Red Oak (Sub-Clarksville) | Leon | 1 | 13.7K | 456 | by Jan 1993 – Aug 2026 |
| Jones, Fred E. O-5-2062 | Roberts & Hammack Inc. only | Red Oak (Sub-Clarksville) | Leon | 1 | 13.6K | 402 | by Jan 1993 – Aug 2026 |
| Floyd, G. O-5-2648 | Showhorn Holding Co., L.L.C. only | Red Oak (Subclarksville 6060) | Leon | 1 | 12.4K | 21 | Mar 1993 – Aug 2026 |
| Coldiron, Frank O-5-1708 | Barrow-Shaver Resources Co. only | Red Oak (Sub-Clarksville) | Leon | 1 | 12.2K | 5.58K | by Jan 1993 – Aug 2026 |
| Garver Heirs O-5-2091 | Showhorn Holding Co., L.L.C. only | Red Oak, South (Sub-Clarksville) | Leon | 1 | 10.5K | 0 | Apr 2003 – Aug 2026 |
| Dale Gas Unit No. 4 G-5-148473 | Texas Royalty Corp. only | Red Oak (FB-a, Sub Clarksville) | Leon | 1 | 10.1K | 659K | Dec 1993 – Apr 2019 |
| Harcrow O-5-1848 | Roberts & Hammack Inc. only | Red Oak (Sub-Clarksville) | Leon | 1 | 10.1K | 401 | by Jan 1993 – Aug 2026 |
| Doris Stone G-5-75458 | Roberts & Hammack Inc. only | Red Oak (FB-a, Sub Clarksville) | Leon | 1 | 9K | 130K | by Jan 1993 – Aug 2026 |
| Jones Gas Unit #1 G-5-36927 | Barrow-Shaver Resources Co. only | Red Oak (Sub-Clarksville) | Leon | 1 | 8.73K | 378K | by Jan 1993 – May 2021 |
| Cadenhead "C" G-5-217078 | Rusk Energy Operating LLC only | Red Oak (FB-B, Sub-Clarksville) | Leon | 1 | 8.45K | 87.2K | Nov 2005 – Aug 2026 |
| Jones, Ruth G-5-70205 | Roberts & Hammack Inc. only | Red Oak (Sub-Clarksville) | Leon | 1 | 8.37K | 91.7K | by Jan 1993 – Aug 2026 |
| Eames G-5-139923 | Texas Royalty Corp. only | Red Oak (FB-a, Sub Clarksville) | Leon | 1 | 8.37K | 1.23M | by Jan 1993 – Sep 2022 |
| Henson G-5-142278 | Texas Royalty Corp. only | Red Oak (FB-a, Sub Clarksville) | Leon | 1 | 8.26K | 1.32M | by Jan 1993 – Sep 2022 |
| Johnson G-5-144857 | Texas Royalty Corp. only | Red Oak (FB-a, Sub Clarksville) | Leon | 1 | 7.73K | 871K | Apr 1993 – Sep 2022 |
| Marathon O-5-3601 | Texas Royalty Corp. only | Red Oak (FB-a, Sub Clarksville) | Leon | 1 | 7.56K | 138 | Mar 1998 – May 2018 |
| Dotson,alice O-5-1957 | Roberts & Hammack Inc. only | Red Oak (Sub-Clarksville) | Leon | 1 | 7.43K | 26.3K | by Jan 1993 – May 2026 |
| Harcrow, Eva O-5-1866 | Italian-American Oil Co., Inc. only | Red Oak (Sub-Clarksville) | Leon | 1 | 6.78K | 72 | by Jan 1993 – May 2004 |
| Cadenhead, C. L. G-5-53991 | Italian-American Oil Co., Inc. only | Red Oak (FB-B, Sub-Clarksville) | Leon | 1 | 6.1K | 255K | by Jan 1993 – Jun 2009 |
| Harris G-5-140219 | Texas Royalty Corp. only | Red Oak (FB-a, Sub Clarksville) | Leon | 1 | 5.67K | 703K | by Jan 1993 – May 2021 |
| Coldiron Gas Unit #1 G-5-141634 | Barrow-Shaver Resources Co. only | Red Oak (Sub-Clarksville) | Leon | 1 | 5.64K | 290K | by Jan 1993 – Oct 2015 |
| Moore Estate G-5-139371 | Texas Royalty Corp. only | Red Oak (FB-a, Sub Clarksville) | Leon | 1 | 5.61K | 950K | by Jan 1993 – Sep 2022 |
| Leach G-5-137080 | Texas Royalty Corp. only | Red Oak (FB-a, Sub Clarksville) | Leon | 1 | 5.14K | 665K | by Jan 1993 – Sep 2022 |
| Whitley, B. J. O-5-2064 | Showhorn Holding Co., L.L.C. only | Red Oak, South (Sub-Clarksville) | Leon | 1 | 4.97K | 0 | Sep 2002 – Jul 2022 |
| Wall Ranch O-5-4324 | Oak Energy, LLC only | Red Oak (Subclarksville 6060) | Leon | 1 | 4.58K | 2.99K | Dec 2020 – Aug 2021 |
| Weathersby Unit #1 O-5-2177 | Lyas, Inc. only | Red Oak, South (Sub-Clarksville) | Leon | 1 | 4.28K | 0 | Apr 2004 – Feb 2011 |
| Harris, B.R. G-5-146788 | Italian-American Oil Co., Inc. only | Red Oak (FB-a, Sub Clarksville) | Leon | 1 | 4.24K | 491K | Jun 1993 – Mar 2008 |
| Waters-Perry et al Oil Unit O-5-1758 | Barrow-Shaver Resources Co. only | Red Oak (Sub-Clarksville) | Leon | 1 | 3.74K | 104 | by Jan 1993 – Sep 2001 |