| Katz (Strawn) Unit O-8-30524 | Atlas Operating LLC | Katz (Strawn) | 245 | 13.2M | 30.5M | May 2010 – Aug 2026 |
| East River Unit O-8-24609 | Kinder Morgan Production Co LLC | Katz (5100) | 44 | 1.27M | 47.7K | by Jan 1993 – Oct 2009 |
| North Knox City Unit O-13-9795 | Daylight Petroleum LLC | Knox City, North (Canyon) | 59 | 1.22M | 77.2K | by Jan 1993 – Aug 2026 |
| Fant Ranch Unit O-13-25860 | Tree Operating, LLC | Fant (Congl., Lo.) | 53 | 540K | 41.6K | by Jan 1993 – Aug 2026 |
| Megargel Drilling Co. O-13-17972 | Taylor Oil & Gas Serv | Hailey (Tannehill) | 19 | 445K | 36.9K | by Jan 1993 – Jul 2026 |
| Howell, G. L. O-8-5186 | Cholla Petroleum, Inc. | Katz | 13 | 344K | 12K | by Jan 1993 – Oct 2009 |
| McFaddin Unit O-13-29901 | Bridwell Oil Co. | Two Tee (Tannehill) | 10 | 344K | 0 | Jan 2001 – Aug 2026 |
| Smith, Lee O-13-28174 | Bridwell Oil Co. | Knox City, West (Strawn) | 2 | 284K | 21 | by Jan 1993 – Aug 2026 |
| Richardson, T. J. O-8-26707 | Apache Corporation | Katz | 3 | 275K | 1.58K | by Jan 1993 – Oct 2009 |
| Cartwright "Q" O-13-9078 | Pony Express Corporate Trust | Texoma, East (Tannehill) | 16 | 231K | 21 | by Jan 1993 – Mar 2023 |
| Thorman, F. W. O-11-66949 | Great American Resources Inc. | Valley View (Tannehill) | 7 | 231K | 40 | by Jan 1993 – Jul 2026 |
| Ellis Ranch O-13-32639 | Double M Petroproperties, Inc. | PF-Ellis (Caddo) | 7 | 200K | 30.7K | Oct 2012 – Aug 2026 |
| Orsborn Unit O-8-20333 | Apache Corporation | Katz (5100) | 29 | 169K | 19.8K | by Jan 1993 – Mar 2009 |
| Richardson North O-8-29219 | Apache Corporation | Katz | 3 | 167K | 0 | Mar 2003 – Oct 2009 |
| Howell, G.L. O-8-25214 | Apache Corporation | Katz (5100) | 4 | 157K | 5.95K | by Jan 1993 – Oct 2009 |
| Orsborn O-8-20334 | Apache Corporation | Katz | 18 | 154K | 22.8K | by Jan 1993 – Oct 2009 |
| McFaddin Ranch "A" O-13-21557 | Bridwell Oil Co. | Little Giant (Tannehill) | 6 | 152K | 21 | by Jan 1993 – May 2024 |
| Wilde O-13-29662 | RHB Exploration & Production,llc | Knox City, NE. (Canyon Reef) | 2 | 132K | 0 | Jul 1999 – Jun 2026 |
| Pitchfork Ranch Unit O-13-29560 | RHB Exploration & Production,llc | Knox City, NE. (Canyon Reef) | 1 | 129K | 0 | Aug 1998 – Mar 2010 |
| Richardson North O-8-30431 | Great American Resources Inc. | Katz (Strawn) | 4 | 127K | 0 | Nov 2009 – Aug 2026 |
| Thormann, F. W. O-13-4115 | Great American Resources Inc. | Knox City, West (Strawn) | 8 | 122K | 40 | by Jan 1993 – Aug 2026 |
| McFaddin Ranch "A" O-13-20707 | Bbe Production, LLC | Little Giant (Tannehill) | 4 | 108K | 166 | by Jan 1993 – Aug 2026 |
| Burnett Estate O-13-18959 | Texas JWB LLC | Bobby B (Tann) | 18 | 98.6K | 4.22K | by Jan 1993 – Dec 2020 |
| McFadden O-13-32460 | M. E. Operating & Services, Inc. | Little Giant (Tannehill) | 7 | 96.9K | 0 | Mar 2013 – Aug 2026 |
| Orsborn, Alma O-8-25760 | Apache Corporation | Katz (5100) | 3 | 94.6K | 13.7K | by Jan 1993 – Feb 2008 |
| Travis, Edna M. O-13-29145 | Daylight Petroleum LLC | T-N-T (Tannehill) | 4 | 93.8K | 0 | May 1996 – Aug 2026 |
| Howell O-8-31234 | Great American Resources Inc. | Katz (Strawn) | 2 | 93.4K | 0 | Feb 2013 – Aug 2026 |
| Fetsch A O-13-27488 | T Dozer D Oil Co. | Fetsch (Tannehill -D-) | 4 | 83.5K | 20 | by Jan 1993 – Jan 2024 |
| Hertel O-13-29361 | Petex | Hertel (Tannehill) | 6 | 80.1K | 0 | Jul 1997 – Aug 2026 |
| Richardson, C.A. O-13-29043 | Daylight Petroleum LLC | T-N-T (Tannehill) | 4 | 77.7K | 0 | Oct 1995 – Aug 2026 |
| Tackitt O-13-28176 | Bridwell Oil Co. | Knox City, West (Strawn) | 2 | 74.9K | 21 | by Jan 1993 – Aug 2026 |
| Hertel, Elizabeth M. et. Vir. O-13-29494 | Texcel Exploration, Inc. | Voss, Southeast (Tannehill -C-) | 5 | 71.5K | 0 | Apr 1998 – Aug 2026 |
| Livingston "A" O-13-29609 | Sojourner Drilling Corporation | Walter Bills (Tannehill) | 3 | 66.9K | 254 | Jan 1999 – Jul 2026 |
| Herring, O. M. O-13-24652 | Petex | Cross Tie, West | 2 | 64.6K | 54 | by Jan 1993 – Aug 2026 |
| Livingston Ranch 4 O-13-26520 | Royal Oryx OG LLC | Bobby B (Tann) | 9 | 62.3K | 171 | by Jan 1993 – Apr 2026 |
| Livingston Ranch O-13-25649 | Royal Oryx OG LLC | Bobby B (Tann) | 13 | 59K | 172 | by Jan 1993 – Apr 2026 |
| Wilde Unit O-13-29625 | RHB Exploration & Production,llc | Knox City, NE. (Canyon Reef) | 1 | 54.5K | 0 | Mar 1999 – Jan 2009 |
| Howell, J. W. O-13-11069 | Best Petroleum Explorations,inc. | J. E. K. (Strawn) | 2 | 52.8K | 33 | by Jan 1993 – Jul 2026 |
| Jones Unit O-13-34049 | Double M Petroproperties, Inc. | Aurelia | 1 | 50K | 0 | Jun 2021 – Aug 2026 |
| Dianne O-13-33893 | Teal Exploration, LLC | Goree, NW. (Tannehill) | 5 | 49.5K | 0 | Mar 2019 – Jul 2026 |
| McFaddin Ranch "E" O-13-31083 | Bridwell Oil Co. | Little Giant (Tannehill) | 3 | 48.4K | 0 | Sep 2008 – May 2024 |
| Farmer, Anna Beth O-13-21477 | THP Operating LLC | Big Four (Tannehill) | 7 | 46.5K | 140 | by Jan 1993 – Apr 2017 |
| Albus, David O-13-24290 | Bettis, Boyle & Stovall | Cross Tie, West | 1 | 46K | 54 | by Jan 1993 – Feb 2016 |
| Hobert Estate O-13-9527 | Daylight Petroleum LLC | Plumlee (Tannehill 2ND) | 7 | 45.6K | 21 | by Jan 1993 – Jul 2019 |
| Tankersley O-13-23472 | S.B. Street Operating, Inc. | Cross Tie (Strawn) | 2 | 45K | 21 | by Jan 1993 – Aug 2020 |
| Stroud, Lila O-13-9479 | BBS Oil Field Services Inc | Hackathorn (Tannehill) | 13 | 42.9K | 21 | by Jan 1993 – Jun 2026 |
| Kempner O-11-68177 | Bbe Production, LLC | Buzzard Peak (Tannehill) | 2 | 42.7K | 0 | Mar 2000 – Aug 2026 |
| Livingston "B" O-13-29630 | Polk Petroleum, Inc. | Byrd's Nest (Tannehill) | 3 | 42.2K | 193 | Mar 1999 – Apr 2015 |
| Howell O-13-26648 | Rio Bravo Production, LLC | J. E. K. (Tannehill) | 1 | 41.4K | 21 | by Jan 1993 – Aug 2026 |
| McFaddin Ranch O-13-14371 | Angelo, Ernest, Jr. | Two Tee (Tannehill) | 3 | 40.1K | 21 | by Jan 1993 – Dec 2000 |