| Rawles, F.L. A O-6-12889 | Cass Energy LLC only | Haynes (Mitchell) | Cass | 2 | 157K | 21 | by Jan 1993 – Aug 2026 |
| Whatley, Elmer O-6-12768 | Cass Energy LLC only | Haynes (Mitchell) | Cass | 2 | 90.2K | 21 | by Jan 1993 – Aug 2026 |
| Rosser, J. E. O-6-13052 | Cass Energy LLC only | Haynes (Mitchell) | Cass | 1 | 61.8K | 17 | by Jan 1993 – Aug 2026 |
| Poe, Oliver "A" O-6-12493 | Cass Energy LLC only | Haynes (Mitchell) | Cass | 1 | 56.7K | 21 | by Jan 1993 – Aug 2026 |
| Bemis, W. N. Estate "A" O-6-12500 | Cass Energy LLC only | Haynes (Mitchell) | Cass | 1 | 56.4K | 21 | by Jan 1993 – Feb 2026 |
| Hazelwood Unit O-6-4736 | McKnight, C. L. only | Haynes (Mitchell) | Cass | 1 | 45.4K | 21 | by Jan 1993 – Mar 2019 |
| Mitchell O-6-16080 | Barrow-Shaver Resources Co. only | Hidden Rock (Cotton Valley Lime) | Cass | 1 | 39K | 40.5K | Dec 2023 – Aug 2026 |
| Colley Unit O-6-4737 | McKnight, C. L. only | Haynes (Mitchell) | Cass | 2 | 36.4K | 1.96K | by Jan 1993 – Jan 2019 |
| Willis, S.B. O-6-10633 | Oil Patch Operators Co., L.L.C. only | Rodessa, E. (Mitchell 6000) | Cass | 1 | 35.2K | 97.1K | by Jan 1993 – Jul 2026 |
| Bywaters No. 3 O-6-12651 | Cass Energy LLC only | Haynes (Mitchell) | Cass | 1 | 33.4K | 21 | by Jan 1993 – Aug 2026 |
| Baldwin, Addie Scott No. 1 O-6-12711 | Cass Energy LLC only | Haynes (Mitchell) | Cass | 1 | 28.3K | 21 | by Jan 1993 – Aug 2026 |
| Lane, Mollie Mrs. O-6-12496 | Cass Energy LLC only | Haynes (Mitchell) | Cass | 1 | 26.9K | 21 | by Jan 1993 – Aug 2026 |
| Bemis, J. R. No. 31 O-6-12626 | Whatley, O.B. Oil Company, Inc. only | Haynes (Mitchell) | Cass | 1 | 15.9K | 21 | by Jan 1993 – Feb 1997 |
| Bemis, W. N. Estate "C" O-6-12502 | Whatley, O.B. Oil Company, Inc. only | Haynes (Mitchell) | Cass | 1 | 15.7K | 21 | by Jan 1993 – Jul 2002 |
| Bemis Estate O-6-12499 | Eagle Oil Management, LLC only | Haynes (Mitchell) | Cass | 1 | 15K | 21 | by Jan 1993 – Feb 2010 |
| Baldwin Heirs No. 2 O-6-12712 | Cass Energy LLC only | Haynes (Mitchell) | Cass | 1 | 14.6K | 21 | by Jan 1993 – Aug 2026 |
| Bivins, J. K. "A" O-6-12488 | Cass Energy LLC only | Haynes (Mitchell) | Cass | 1 | 13.5K | 20 | by Jan 1993 – Aug 2019 |
| Rodessa,east /6000 Mitchell/Unit O-6-5178 | Crow, David only | Rodessa, E. (Mitchell 6000) | Cass | 3 | 10.9K | 6.19K | by Jan 1993 – Dec 1998 |
| Baldwin Heirs O-6-12769 | Cass Energy LLC only | Haynes (Mitchell) | Cass | 2 | 7.73K | 21 | by Jan 1993 – Aug 2026 |
| Baldwin, Addie No. 15 O-6-12714 | Cass Energy LLC only | Haynes (Mitchell) | Cass | 1 | 7.73K | 21 | by Jan 1993 – Aug 2026 |
| Baldwin, Addie No. 17 O-6-12716 | Cass Energy LLC only | Haynes (Mitchell) | Cass | 1 | 7.68K | 21 | by Jan 1993 – Aug 2026 |
| Sparks, Joe O-6-12490 | Whatley, O.B. Oil Company, Inc. only | Haynes (Mitchell) | Cass | 1 | 7.31K | 21 | by Jan 1993 – May 2000 |
| McDonald School Land O-6-12890 | Whatley, O.B. Oil Company, Inc. only | Haynes (Mitchell) | Cass | 1 | 6.92K | 21 | by Jan 1993 – Jan 2012 |
| Price, George "A" O-6-12671 | Whatley, Audie Floyd Estate Of only | Haynes (Mitchell) | Cass | 1 | 6.12K | 20 | by Jan 1993 – Jul 2021 |
| Bemis, W. N. Estate "B" O-6-12501 | Whatley, O.B. Oil Company, Inc. only | Haynes (Mitchell) | Cass | 1 | 5.66K | 21 | by Jan 1993 – Nov 1999 |
| Bywaters "B" O-6-12591 | Whatley, O.B. Oil Company, Inc. only | Haynes (Mitchell) | Cass | 1 | 5.34K | 21 | by Jan 1993 – Aug 1998 |
| Bemis, J. R. No. 20 O-6-12592 | Whatley, O.B. Oil Company, Inc. only | Haynes (Mitchell) | Cass | 1 | 4.68K | 21 | by Jan 1993 – Mar 2004 |
| Starcke O-6-12903 | Sklar & Phillips Oil Co. only | Rodessa, NW. (Mitchell) | Cass | 1 | 3.38K | 2.2K | by Jan 1993 – Jul 1994 |
| Grogan Manufacturing Co. "A" O-6-12492 | Cass Energy LLC only | Haynes (Mitchell) | Cass | 1 | 2.94K | 0 | Dec 2012 – Nov 2024 |
| Bemis, J. R. No. 12 O-6-12624 | Eagle Oil Management, LLC only | Haynes (Mitchell) | Cass | 1 | 2.93K | 21 | by Jan 1993 – Nov 2006 |
| Grogan Mfg. Co. O-6-13054 | Cass Energy LLC only | Haynes (Mitchell) | Cass | 1 | 2.35K | 12 | Oct 1993 – Apr 2024 |
| Lex #2 O-6-12921 | Whatley, O.B. Oil Company, Inc. only | Haynes (Mitchell) | Cass | 1 | 2.24K | 21 | by Jan 1993 – Dec 1994 |
| Bemis Estate "D" No. 8 O-6-12623 | Whatley, O.B. Oil Company, Inc. only | Haynes (Mitchell) | Cass | 1 | 1.87K | 21 | by Jan 1993 – Jun 2002 |
| Bivins, J. K. "B" O-6-12489 | Cass Energy LLC only | Haynes (Mitchell) | Cass | 1 | 1.44K | 10 | Nov 1993 – Jun 1995 |
| Bywaters No. 10 O-6-12652 | Whatley, O.B. Oil Company, Inc. only | Haynes (Mitchell) | Cass | 1 | 1.43K | 21 | by Jan 1993 – Aug 1997 |
| Bemis Estate "D" No. 3 O-6-12628 | Whatley, O.B. Oil Company, Inc. only | Haynes (Mitchell) | Cass | 1 | 1.38K | 21 | by Jan 1993 – Dec 1995 |
| Bemis, J. R. No. 28 O-6-12563 | Whatley, O.B. Oil Company, Inc. only | Haynes (Mitchell) | Cass | 1 | 1.01K | 21 | by Jan 1993 – May 1995 |
| Bemis, J. R. No. 10 O-6-12593 | Whatley, O.B. Oil Company, Inc. only | Haynes (Mitchell) | Cass | 1 | 929 | 21 | by Jan 1993 – Feb 2003 |
| Bemis Estate "D" No. 6 O-6-12625 | Whatley, O.B. Oil Company, Inc. only | Haynes (Mitchell) | Cass | 1 | 888 | 21 | by Jan 1993 – Aug 1998 |
| Bywaters "C" O-6-12653 | Whatley, O.B. Oil Company, Inc. only | Haynes (Mitchell) | Cass | 1 | 838 | 21 | by Jan 1993 – Nov 1994 |
| Hall,w.m. O-6-5721 | Bobcat Operating only | Rodessa, E. (Mitchell 6000) | Cass | 1 | 428 | 23 | Feb 1993 – Oct 1996 |
| Bemis Estate No. 12 O-6-13082 | Whatley, O.B. Oil Company, Inc. only | Haynes (Mitchell) | Cass | 1 | 339 | 7 | Nov 1993 – May 1994 |
| Poe, Oliver "B" O-6-12494 | Whatley, O.B. Oil Company, Inc. only | Haynes (Mitchell) | Cass | 1 | 141 | 21 | by Jan 1993 – Mar 2001 |
| Rawles, F. L. O-6-13057 | Cass Energy LLC only | Haynes (Mitchell) | Cass | 1 | 112 | 0 | Sep 2010 – Dec 2010 |
| McDonald, G. H. -A- O-6-12491 | Spear Production Company, Inc. only | Haynes (Mitchell) | Cass | 1 | 98 | 11 | by Jan 1993 – Dec 1993 |
| Baldwin, Addie No. 13 O-6-12713 | Whatley, O.B. Oil Company, Inc. only | Haynes (Mitchell) | Cass | 1 | 39 | 21 | by Jan 1993 – Jul 1995 |
| Bemis Estate No. 3 O-6-12562 | Whatley, O.B. Oil Company, Inc. only | Haynes (Mitchell) | Cass | 1 | 37 | 21 | by Jan 1993 – Jan 1995 |
| Baldwin Heirs No. 3 O-6-12715 | Whatley, O.B. Oil Company, Inc. only | Haynes (Mitchell) | Cass | 1 | 19 | 21 | by Jan 1993 – Sep 1994 |
| Tolleson No. 1 SWD O-6-13055 | Spear Production Company, Inc. only | Haynes (Mitchell) | Cass | 1 | 0 | 0 | — |
| Whatley, G. W. No. 1 O-6-13158 | Whatley, O.B. Oil Company, Inc. only | Haynes (Mitchell) | Cass | 1 | 0 | 0 | — |