| Hosey-Driskell Unit O-6-13177 | Wilson Energy Resources LLC only | Hosey-Driskell (Rodessa) | Cass | 28 | 442K | 119K | Jul 1993 – Feb 2026 |
| Hays-Campbell (AW) O-6-15992 | Barrow-Shaver Resources Co. only | Hidden Rock (Cotton Valley Lime) | Cass | 1 | 311K | 263K | Jun 2023 – Aug 2026 |
| Rawles, F.L. A O-6-12889 | Cass Energy LLC only | Haynes (Mitchell) | Cass | 2 | 157K | 21 | by Jan 1993 – Aug 2026 |
| Bell, William, Jr O-6-10302 | Stetson Petroleum Corp. only | Linden, East ( Cotton Valley) | Cass | 4 | 132K | 70K | by Jan 1993 – Jul 2026 |
| Hosey et Al O-6-12484 | Buffco Production Inc. only | Hosey-Driskell (Rodessa) | Cass | 2 | 117K | 57.9K | by Jan 1993 – Feb 2022 |
| Whatley, Elmer O-6-12768 | Cass Energy LLC only | Haynes (Mitchell) | Cass | 2 | 90.2K | 21 | by Jan 1993 – Aug 2026 |
| Cash, Russell N. O-6-2147 | Stroud Petroleum, Inc. only | Rodessa (Hill) | Cass | 2 | 76.6K | 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 |
| Macdonell Co. of Lima, Inc., The O-6-12308 | Valence Operating Company only | Frost (Smackover) | Cass | 1 | 49.4K | 109K | by Jan 1993 – Aug 2024 |
| Simpson "D" O-6-15604 | Buffco Production Inc. only | Lake Ferrell (Pettit, Upper) | Cass | 1 | 45.8K | 0 | Jun 2016 – Aug 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 |
| Spell O-6-12541 | Goldsberry Operating Co., Inc. only | Rodessa, NW. (Dees, Upper) | Cass | 1 | 33.7K | 31.2K | by Jan 1993 – Mar 2003 |
| Bywaters No. 3 O-6-12651 | Cass Energy LLC only | Haynes (Mitchell) | Cass | 1 | 33.4K | 21 | by Jan 1993 – Aug 2026 |
| Kildare /West Gloyd/ Unit O-6-4641 | Ridgeling Well Salvage only | Kildare | Marion | 19 | 32.9K | 2.39K | by Jan 1993 – Feb 2000 |
| Ella O-6-15919 | Rose City Resources, LLC only | Hidden Rock (Cotton Valley Lime) | Cass | 1 | 31.1K | 0 | Jul 2022 – 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 |
| Bell, William, Jr Unit O-6-15769 | Stetson Petroleum Corp. only | Linden, East ( Cotton Valley) | Cass | 1 | 15.8K | 8.62K | Dec 2019 – Jul 2026 |
| 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 |
| Godwin O-6-14224 | Artex Energy LLC only | Hosey-Driskell (Rodessa) | Cass | 1 | 15.4K | 0 | Mar 2003 – Feb 2022 |
| 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 |
| Ellington Trust O-6-12372 | Newton Corp.,the only | Lake Texarkna (Travis Peak) | Cass | 1 | 13.8K | 22 | by Jan 1993 – Jun 1998 |
| Glass, C. E. G-6-109495 | Comanche Well Service Corp. only | Atlanta, S. (Smackover) | Cass | 1 | 13.7K | 588K | by Jan 1993 – Sep 1998 |
| Bivins, J. K. "A" O-6-12488 | Cass Energy LLC only | Haynes (Mitchell) | Cass | 1 | 13.5K | 20 | by Jan 1993 – Aug 2019 |
| Nellie O-6-15958 | Rose City Resources, LLC only | Hidden Rock (Cotton Valley Lime) | Cass | 1 | 12.7K | 5.25K | Jan 2023 – Aug 2026 |
| George Early O-6-15663 | Buffco Production Inc. only | Lake Ferrell (Pettit, Upper) | Cass | 1 | 11.7K | 0 | Feb 2019 – Aug 2026 |
| 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 |
| Lawson O-6-15651 | Buffco Production Inc. only | Lake Ferrell (Pettit, Upper) | Cass | 2 | 8.78K | 0 | Oct 2018 – Aug 2026 |
| 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 |
| Lavert "D" O-6-11628 | Diamond a Inc. only | Hosey-Driskell (Rodessa) | Cass | 1 | 3.67K | 5.48K | by Jan 1993 – Jun 1993 |
| 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 |
| Allday O-6-11720 | Diamond a Inc. only | Hosey-Driskell (Rodessa) | Cass | 2 | 2.93K | 5.91K | by Jan 1993 – Jun 1993 |
| 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 |
| Stiles G-6-151117 | T-M Well Service, L.L.C. only | Rodessa (Hill North) | Cass | 1 | 2.85K | 38.7K | Dec 1993 – Nov 2014 |