| Block 31 Unit G-10-279501 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 15K | 1.94M | Oct 2015 – Apr 2026 |
| White, J.M. O-10-34485 | McDonnold Operating, Inc. only | Block a-34 (Ellenburger) | Andrews | 1 | 14.8K | 7.37K | May 1995 – Aug 1997 |
| Block 69 O-1-11410 | Shefts & Shefts, Inc. only | Salt Flat | Caldwell | 1 | 14.8K | 20.7K | Jan 1993 – Jan 2024 |
| University 10-18 "A" G-10-159158 | Chevron U. S. A. Inc. only | Block 18 (Cherry Canyon) | Ward | 1 | 14.8K | 427K | Jul 1996 – Mar 2005 |
| Fasken Block 6 O-10-30622 | Citation Oil & Gas Corp. only | Hutex (Bend) | Andrews | 1 | 14.8K | 873K | Jan 1993 – Oct 2012 |
| University 20-2 O-10-35485 | OXY USA Inc. only | Block 20 (Delaware Cons.) | Winkler | 1 | 14.7K | 26.7K | Apr 1997 – Sep 2009 |
| State Lease 74581 G-4-96886 | Texas Offshore Operations, LLC only | Block 772 (Frio, Middle C) | Mustang IS-LB | 1 | 14.7K | 8.51M | Jan 1993 – Oct 2016 |
| State Tract 98-L O-3-25326 | Gulf Coast Operations, LLC only | Block 98-L (MA-2) | High IS-LB | 2 | 14.6K | 334K | Jul 2006 – Jul 2007 |
| University -36B- O-10-59097 | Formentera Operations LLC only | Block 31 (Penn. 7620) | Crane | 1 | 14.6K | 25.9K | Feb 2023 – Apr 2026 |
| University 12 "E" G-9-118899 | Ozark Exploration, Inc. only | Block 51 (Strawn) | Crockett | 1 | 14.5K | 1.64M | Jan 1993 – May 2024 |
| Jordan, Augusta O-10-39008 | Parallel Petroleum LLC only | Block a-34 (San Andres) | Andrews | 1 | 14.4K | 0 | Aug 2008 – Apr 2026 |
| Runnels, Mack V. Gas Unit G-6-167202 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 14.4K | 1.6M | Jan 1998 – Sep 2017 |
| Texas Pacific Oil Company G-10-91514 | Bald Eagle Operating Inc. only | Block a-34 (Yates) | Andrews | 1 | 14.3K | 106K | Jul 1997 – Oct 2022 |
| Means, R. M., Etal -B- O-10-45395 | Vin Fisher Operating, Inc. only | Block a-34 (San Andres) | Andrews | 2 | 14.3K | 0 | Apr 2014 – Apr 2026 |
| Bluford Thornton 82 G-10-180395 | XTO Energy Inc. only | Block 16 (Montoya) | Ward | 1 | 14.3K | 4.66M | Nov 2000 – Apr 2026 |
| Block 7 -A- O-13-33729 | JLW Operations, LLC only | Mankins | Archer | 1 | 14.2K | 0 | Mar 2018 – Apr 2026 |
| University -B15- O-9-3540 | MHM Pipeline Co., Inc. only | Block 4 (Devonian) | Upton | 1 | 14.2K | 511K | Jan 1993 – Jan 2026 |
| University "O" O-10-32821 | Apache Corporation only | Block 31, East (Atoka) | Crane | 1 | 14.2K | 111K | Jan 1993 – Jul 2006 |
| University 12 21 O-10-43306 | Crescent Energy Operating, LLC only | Block 12 | Andrews | 1 | 14.2K | 20.3K | Apr 2012 – Apr 2026 |
| Watson, L. A. et al B G-10-180865 | XTO Energy Inc. only | Block 16 (Montoya) | Ward | 1 | 14.1K | 7.07M | Oct 2000 – Mar 2026 |
| University -34- O-10-21330 | WTG Exploration only | Block 17, Southeast (Delaware) | Ward | 1 | 14.1K | 33.4K | Jan 1993 – Nov 2025 |
| Stallings Gas Unit G-10-195663 | SMC Oil & Gas, Inc. only | Block 16 (Montoya) | Ward | 1 | 14.1K | 5.62M | Jan 2003 – Feb 2026 |
| Block #56 O-1-3124 | Shefts & Shefts, Inc. only | Salt Flat | Caldwell | 1 | 14K | 10.1K | Jan 1993 – Apr 2026 |
| University "13-A" O-10-36289 | Energen Resources Corporation only | Block 2 (Grayburg) | Andrews | 2 | 13.9K | 0 | Mar 2000 – Jun 2003 |
| Thornton, Bluford G-10-47928 | XTO Energy Inc. only | Block 16 (Devonian) | Ward | 1 | 13.8K | 7.1M | Jan 1993 – Dec 2007 |
| University Lands -1806- O-10-36266 | Wagner Oil Company only | Block 6, NE. (Strawn) | Andrews | 1 | 13.8K | 0 | Dec 1999 – Jul 2007 |
| Pyote Gas Unit 11 G-10-178813 | XTO Energy Inc. only | Block 16 (Montoya) | Ward | 1 | 13.7K | 4.3M | Jun 2000 – Apr 2026 |
| Brown, Olson 1 O-10-26255 | Sandridge Expl. and Prod., LLC only | Block a-41 (Ellenburger) | Andrews | 1 | 13.7K | 44 | Jan 1993 – Feb 2000 |
| Block 31 Unit G-10-279532 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 13.7K | 4.14M | Oct 2015 – Apr 2026 |
| Acu 5A O-10-45778 | Vin Fisher Operating, Inc. only | Block a-34 (San Andres) | Andrews | 1 | 13.6K | 0 | Dec 2014 – Apr 2026 |
| Block 31 Unit G-10-240433 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 13.5K | 7.81M | Aug 2007 – Mar 2026 |
| Armstrong O-10-25870 | Redco Oil & Gas, Inc. only | Block a-34 (Yates) | Andrews | 1 | 13.5K | 39 | Jan 1993 – Apr 2026 |
| University "12-39" G-9-82417 | Blackstone Energy Services LLC only | Block 39-B (Ellen) | Crockett | 1 | 13.5K | 261K | Jan 1993 – Apr 2026 |
| E. Riethmeyer Gas Unit G-4-234045 | Block "T" Petroleum, Inc. only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 13.5K | 3.83M | Oct 2007 – Apr 2026 |
| University "1-6" O-10-28529 | RBJ & Associates, LLC only | Block 31, NW. (Penn Upper) | Crane | 1 | 13.5K | 127 | Jan 1993 – Feb 2007 |
| University 7 O-9-13679 | Reliance Energy, Inc. only | Block 38 (Ellenburger) | Crockett | 1 | 13.4K | 49.2K | Jul 1994 – Jun 2001 |
| Odysseus O-10-50163 | Ring Energy, Inc. only | Block a-34 (San Andres) | Gaines | 1 | 13.4K | 11.8K | Oct 2017 – Feb 2019 |
| Block 31 Unit G-10-224150 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 13.3K | 1.79M | Nov 2005 – Apr 2026 |
| Matton O-10-51718 | Ring Energy, Inc. only | Block a-34 (San Andres) | Gaines | 1 | 13.3K | 25.6K | Oct 2018 – Apr 2023 |
| Boyd 28 O-10-36058 | Ocean Energy, Inc. only | Block 21 NW (Wolfcamp) | Winkler | 1 | 13.3K | 9 | Jul 1999 – Jul 2000 |
| King 29 O-10-46669 | Formentera Operations LLC only | Block 31 (Devonian) | Crane | 1 | 13.3K | 25.7K | Dec 2014 – Oct 2022 |
| Octavius O-10-49041 | Ring Energy, Inc. only | Block a-34 (San Andres) | Gaines | 1 | 13.2K | 638 | Jul 2017 – Feb 2019 |
| Andrews University 33 O-10-37675 | Williams, Clayton Energy, Inc. only | Block 5 (Wolfcamp) | Andrews | 1 | 13.2K | 14.4K | Nov 2005 – Apr 2008 |
| S.T. 218-L S/2 SE/4 G-3-229316 | Apex Oil & Gas, Inc. only | Galveston Block 218-L (Rob M-1) | Galveston-LB | 1 | 13.1K | 2.29M | Jun 2006 – Nov 2008 |
| State of Texas -BG- O-9-2302 | Egi, Inc. only | Block 49 (2450) | Reagan | 1 | 13.1K | 885 | Jan 1993 – Apr 2026 |
| University Block 46 O-9-11783 | Mariah Energy Corp. only | Block 46, East (Grayburg) | Crockett | 11 | 13K | 3.72K | Jan 1993 – Sep 1998 |
| Becker, H.G. Gas Unit G-6-89090 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 13K | 1.59M | Jan 1993 – Apr 2026 |
| University 35A O-10-27237 | Formentera Operations LLC only | Block 31 (Devonian) | Crane | 3 | 13K | 234K | Nov 2012 – Apr 2026 |
| State of Texas -T- O-10-426 | Olsen Energy Inc. only | Block 12 | Andrews | 2 | 13K | 9.86K | Jan 1993 – May 2011 |
| State "OA" O-10-24220 | Gruy Petroleum Management Co. only | Block 17, Southeast (Delaware) | Ward | 1 | 12.9K | 70.2K | Jan 1993 – Nov 2003 |