| Smith O-13-25327 | Marwell Petroleum Ltd Partnrship | Matlock | 1 | 42.8K | 29.9K | by Jan 1993 – Aug 2026 |
| Hamman B O-13-34382 | Oakridge Oil and Gas, LP | Bryson, East | 4 | 42.6K | 5.02K | Feb 2025 – Aug 2026 |
| L.A. Worthington O-13-32761 | Oakridge Oil and Gas, LP | KRS (Marble Falls) | 4 | 42.4K | 547K | Nov 2013 – Aug 2026 |
| Rater West O-13-33660 | G & F Oil, Inc. | KRS (Marble Falls) | 1 | 42.4K | 577K | Jul 2017 – Jul 2026 |
| Marley O-13-26444 | Barnett, G. | Bryson, East | 1 | 42.4K | 45 | by Jan 1993 – Aug 2026 |
| Henderson O-13-32256 | Eagleridge Operating, LLC | KRS (Marble Falls) | 5 | 42.3K | 882K | Jan 2012 – Aug 2026 |
| Allar Co. O-13-21764 | D L Operating | Crum (Marble Falls) | 3 | 42.1K | 550K | by Jan 1993 – Aug 2026 |
| Boyd, L O-13-32635 | Oakridge Oil and Gas, LP | KRS (Marble Falls) | 3 | 42.1K | 351K | Jun 2013 – Oct 2020 |
| Clayton, M. C. O-13-31851 | Rio Bravo Production, LLC | Bryson, East | 3 | 41.8K | 4.63K | Sep 2011 – Aug 2026 |
| Cherryhomes, Virginia O-13-3473 | Bridwell Oil Co. | Avis, East (Bryson) | 1 | 41.8K | 20 | by Jan 1993 – Aug 2026 |
| Corry O-13-33434 | Delfin Operating, LLC | Bowie, SW. (Marble Falls) | 1 | 41.5K | 247K | Dec 2014 – Aug 2026 |
| Boaz O-13-22222 | Bry-Tex Partners, LLC | Bryson, East | 15 | 41.5K | 87.5K | by Jan 1993 – Jul 2018 |
| Owen Estate O-13-18650 | Oakmont Oil and Gas | Bryson, East (Miss) | 2 | 41.2K | 135 | by Jan 1993 – Aug 2026 |
| Emard O-13-34171 | G & F Oil, Inc. | Joy (Strawn 3300) | 1 | 40.7K | 196 | Dec 2022 – Jul 2026 |
| Briley "B" O-13-23763 | Pop Operating Company | Mercury (Strawn) | 2 | 40.7K | 438 | by Jan 1993 – Aug 2026 |
| Sewell A O-13-31743 | Oakridge Oil and Gas, LP | Newark, East (Barnett Shale) | 1 | 40.5K | 1.11M | Jul 2010 – Aug 2026 |
| Bommarito O-13-32950 | FX Energy Operating, LLC | KRS (Marble Falls) | 2 | 40.2K | 513K | Jun 2014 – Feb 2026 |
| McClure South O-13-32934 | FX Energy Operating, LLC | KRS (Marble Falls) | 2 | 40K | 1.43M | Apr 2014 – Aug 2026 |
| Blount O-13-3293 | Moody Ranch Oil, LLC | Jack County Regular | 31 | 39.8K | 84 | by Jan 1993 – Aug 2026 |
| Jones Heirs O-13-19938 | Rio Bravo Production, LLC | Jack County Regular | 1 | 39.6K | 12 | by Jan 1993 – Aug 2026 |
| Davis O-13-33077 | Oakridge Oil and Gas, LP | Neale (Marble Falls) | 2 | 39.5K | 296K | Jun 2014 – Aug 2026 |
| Roach -B- O-13-3317 | Charles D. Self Operating, LLC | Jack County Regular | 25 | 39.4K | 21 | by Jan 1993 – Aug 2026 |
| Noble O-13-29824 | Swan PC, LP | Jack County Regular | 1 | 39.2K | 169K | Oct 2000 – Mar 2011 |
| State of Texas O-13-3634 | Rio Bravo Production, LLC | Dearing (Strawn) | 1 | 39.1K | 65 | by Jan 1993 – Aug 2026 |
| Fowler 254 O-13-31709 | Rio Bravo Production, LLC | Cary-Mag (Conglomerate) | 2 | 39.1K | 928K | Oct 2010 – Aug 2026 |
| Crainshaw O-13-32634 | Oakridge Oil and Gas, LP | KRS (Marble Falls) | 2 | 39K | 802K | Aug 2012 – Aug 2026 |
| Flo-Coop, Inc. O-13-30144 | Jay Management Company, LLC | Bryson, East | 1 | 38.4K | 13.3K | Apr 2003 – Jan 2013 |
| Cook O-13-32403 | Eagleridge Operating, LLC | KRS (Marble Falls) | 5 | 38.4K | 2.61M | May 2011 – Jan 2026 |
| Rider-Bridges O-13-32978 | FX Energy Operating, LLC | KRS (Marble Falls) | 3 | 38.4K | 921K | Jun 2014 – Dec 2021 |
| Wilton O-13-22931 | M & a Oil Company, Ltd. | Crum (Marble Falls) | 1 | 38.1K | 98.1K | by Jan 1993 – Aug 2026 |
| Sewell B O-13-32971 | Oakridge Oil and Gas, LP | Neale (Marble Falls) | 3 | 38.1K | 578K | Jul 2014 – Aug 2026 |
| Tillery O-13-32204 | Eagleridge Operating, LLC | KRS (Marble Falls) | 1 | 38.1K | 618K | May 2012 – Jul 2023 |
| Peterson, Bill O-13-27512 | Blevins Production LLC | Jack County Regular | 18 | 38.1K | 23 | by Jan 1993 – Aug 2026 |
| Koger O-13-17914 | Ranger Operating Co. | Jack County Regular | 1 | 37.8K | 9.63K | by Jan 1993 – Aug 2026 |
| Enlow O-13-27661 | B.O.L.D. Oil and Gas, LLC | Jack County Regular | 1 | 37.6K | 40 | by Jan 1993 – Aug 2026 |
| Anderson-Cooper S-2 Unit O-13-31784 | Eagleridge Operating, LLC | KRS (Marble Falls) | 2 | 37.6K | 798K | Dec 2010 – Apr 2021 |
| Sheppard 'C' O-13-33364 | Scout Energy Management LLC | Risch, East (Caddo Congl.) | 3 | 37.4K | 99.6K | Jan 2015 – Aug 2026 |
| Carpenter, J. C. O-13-3367 | Quest Petroleum Company | Jack County Regular | 2 | 37.4K | 21 | by Jan 1993 – Dec 2019 |
| Edwards-Worthington O-13-32480 | Oakridge Oil and Gas, LP | KRS (Marble Falls) | 4 | 36.9K | 169K | Sep 2012 – Jul 2022 |
| Shown O-13-32973 | Oakridge Oil and Gas, LP | Neale (Marble Falls) | 2 | 36.8K | 665K | May 2014 – Aug 2026 |
| Nash, Sallie O-13-18279 | Kroh Operating LLC | Jack County Regular | 2 | 36.6K | 29.1K | by Jan 1993 – Jul 2014 |
| Wright O-13-19967 | Lufkin Production Company Inc. | Clay County Regular | 10 | 36.5K | 219 | by Jan 1993 – Nov 2024 |
| Stewart O-13-3576 | Schlittler, Willard | Bryson, East | 3 | 36.5K | 98.5K | by Jan 1993 – Aug 2026 |
| Peavy, S. O-13-23313 | JDL Operating, LLC | Jennifer (Caddo) | 3 | 36.5K | 382K | by Jan 1993 – Jul 2026 |
| Roper O-13-25364 | Quest Petroleum Company | Rusmag | 6 | 36.4K | 209K | by Jan 1993 – Apr 2026 |
| Perkins O-13-32892 | Stone Creek Operating, LLC | KRS (Marble Falls) | 1 | 36.2K | 277K | May 2014 – Jan 2020 |
| Clayton, J. R. O-13-11746 | B.O.L.D. Oil and Gas, LLC | Jack County Regular | 1 | 36K | 5.83K | by Jan 1993 – Aug 2026 |
| Jones O-13-24872 | Horseshoe Production, LLC | Dearing (Caddo) | 1 | 35.8K | 13.1K | by Jan 1993 – Jul 2026 |
| Keyser O-13-22357 | 7-Iron Oil & Gas, LLC | Jack County Regular | 2 | 35.7K | 1.01K | by Jan 1993 – Jul 2026 |
| Maxey Estate O-13-12443 | Self, Charles Lynn | Jack County Regular | 16 | 35.6K | 79 | by Jan 1993 – Aug 2026 |