| Johnson, W. D. -E- G-10-126518 | Williams Oil Company only | Estes Block 34 (Wolfcamp, Gas) | Ward | 1 | 6.58K | 191K | Jan 1993 – Jun 2025 |
| Blocker O-10-30070 | Prime Operating Company only | Spraberry (Trend Area) | Martin | 1 | 6.57K | 17.5K | Jan 1993 – Oct 1998 |
| University 38 -A- G-10-267637 | Slant Operating, LLC only | Block 31 (Devonian) | Crane | 1 | 6.55K | 75.2K | Jul 2012 – Jun 2023 |
| University 37 O-10-39203 | Diamondback E&P LLC only | Block 6 (Strawn) | Andrews | 1 | 6.55K | 3.48K | Nov 2008 – Jun 2015 |
| Brewster Gas Unit G-6-139288 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 6.53K | 928K | Jan 1993 – Apr 2017 |
| Greer, Cecil B. Gas Unit G-6-94961 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 6.52K | 722K | Jan 1993 – Apr 2026 |
| Blocker Heirs O-6-11858 | Harleton Oil & Gas Inc. only | Carthage (Burnett Sand) | Harrison | 1 | 6.51K | 956 | Jan 1993 – Aug 2000 |
| Pyote Gas Unit No. 11 G-10-172906 | CML Exploration, LLC only | Block 16 (Ellen.) | Ward | 1 | 6.51K | 1.53M | Oct 1998 – Dec 2020 |
| Washington, Emanuel Gas Unit G-6-234523 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 6.5K | 1.16M | Dec 2007 – Apr 2026 |
| Becker, H.G. Gas Unit G-6-216598 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 6.47K | 693K | Oct 2005 – Apr 2026 |
| Harris, James Gas Unit G-6-276958 | Valence Operating Company only | Blocker (Cotton Valley) | Harrison | 1 | 6.44K | 3.38M | Mar 2015 – Apr 2026 |
| Mohon GU G-6-208979 | Soldier Creek Energy, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 6.36K | 551K | Dec 2004 – Apr 2026 |
| Becker, H.G. Gas Unit G-6-211142 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 6.35K | 794K | Feb 2005 – Apr 2026 |
| Patterson-Herrin Gas Unit G-6-140685 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 6.32K | 1.74M | Jan 1993 – Apr 2026 |
| Brewster Gas Unit G-6-234149 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 6.32K | 1.13M | Nov 2007 – Apr 2026 |
| Greer, Cecil B. Gas Unit G-6-228318 | Soldier Creek Energy, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 6.32K | 875K | Feb 2007 – Apr 2026 |
| Hill Unit G-10-50619 | XTO Energy Inc. only | Block 16 (Devonian) | Ward | 1 | 6.31K | 8.24M | Jan 1993 – Mar 2013 |
| Williamson-Retrieve Unit No. 1 G-3-173119 | Timberwolf Energy, Inc. only | Angleton, South (F-9 Block D) | Brazoria | 1 | 6.31K | 737K | Mar 1999 – Mar 2026 |
| Pyote Gas Unit No. 12 G-10-48513 | XTO Energy Inc. only | Block 16 (Ellen.) | Ward | 1 | 6.28K | 1.23M | Jan 1993 – Jul 2024 |
| Becker, H.G. Gas Unit G-6-211143 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 6.26K | 697K | Mar 2005 – Apr 2026 |
| Wilber, B.E. G-3-103620 | EOG Resources, Inc. only | Devil (Fault Block C) | Jefferson | 1 | 6.25K | 1.57M | Jan 1993 – Jun 2003 |
| Riethmeyer, E. Gas Unit G-4-247418 | Block "T" Petroleum, Inc. only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 6.25K | 1.66M | Jan 2009 – Apr 2026 |
| Mobley Gas Unit G-6-181068 | Valence Operating Company only | Blocker (Cotton Valley) | Harrison | 1 | 6.24K | 806K | Dec 2000 – Mar 2008 |
| Daniels "a" Gas Unit G-6-134446 | Samson Lone Star, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 6.23K | 649K | Jan 1993 – Feb 2013 |
| Rosborough Gas Unit "B" G-6-229470 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 6.22K | 1.21M | May 2007 – Apr 2026 |
| Thelma Mosley Gas Unit G-6-285469 | Valence Operating Company only | Blocker (Cotton Valley) | Harrison | 1 | 6.22K | 2.91M | Oct 2018 – Apr 2026 |
| Lynch, David Gas Unit G-6-242541 | Brammer Engineering, Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 6.21K | 913K | Sep 2008 – Jan 2026 |
| Blalock Gas Unit 2 G-6-218632 | TGNR East Texas II LLC only | Blocker (Cotton Valley) | Harrison | 1 | 6.2K | 1.07M | Nov 2005 – Aug 2012 |
| Washington, Emanuel Gas Unit G-6-89994 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 6.2K | 1.39M | Jan 1993 – Apr 2026 |
| Amis Gas Unit G-6-230229 | Soldier Creek Energy, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 6.19K | 341K | May 2007 – Dec 2017 |
| 9015 JV-P Block 9 -B- O-10-36051 | Henry Petroleum LP only | Andrews, South (Wolfcamp) | Andrews | 1 | 6.18K | 2.25K | Aug 1999 – Apr 2003 |
| Becker, H.G. Gas Unit G-6-142100 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 6.18K | 1.3M | Jan 1993 – Apr 2026 |
| J. M. White 'A' O-10-45635 | Citation Oil & Gas Corp. only | Block a-34 (San Andres) | Andrews | 2 | 6.18K | 647 | Oct 2014 – May 2024 |
| Mobley Gas Unit G-6-282977 | Valence Operating Company only | Blocker (Cotton Valley) | Harrison | 1 | 6.14K | 2.81M | Aug 2017 – Apr 2026 |
| Harris G-6-205229 | Harleton Oil & Gas Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 6.14K | 1.19M | Sep 2004 – Apr 2026 |
| Haynes Gas Unit G-6-178516 | SM Operating Company LLC only | Blocker (Page) | Harrison | 1 | 6.14K | 869K | Jun 2000 – Mar 2026 |
| Durelle O-10-36208 | Formentera Operations LLC only | Block 27 (Tubb) | Crane | 3 | 6.13K | 29.3K | Nov 1999 – Apr 2020 |
| Brown, Maude B. Gas Unit G-6-180348 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 6.13K | 653K | Oct 2000 – Apr 2021 |
| Brown, Maude B. Gas Unit G-6-141453 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 6.08K | 1M | Jan 1993 – Apr 2018 |
| Knackstedt, G.C. Gas Unit G-6-84700 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 6.04K | 956K | Jan 1993 – Apr 2026 |
| University C O-9-15436 | Osborn Heirs Company only | Block 38 (Canyon Sd.) | Crockett | 1 | 6.03K | 69.1K | Jul 2003 – Apr 2020 |
| Block 75 Unit G-2-240043 | Hedrick Production Inc. only | Clayton (Wilcox 7360) | Live Oak | 1 | 6.03K | 782K | Aug 2008 – Mar 2026 |
| Bartlett-Bailey Gas Unit #1 G-6-140124 | Walkabout Operating, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 6.02K | 1.76M | Jan 1993 – Dec 2025 |
| Brune-Burnett -C- Gas Unit G-6-224377 | Sponte Operating, Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 6K | 428K | Oct 2006 – Jun 2014 |
| George, T.W. Gas Unit "A" G-6-162689 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 5.99K | 839K | Feb 1997 – Apr 2026 |
| High Island 24L SL59456 G-3-167568 | Jefferson Block 24 Oil & Gas LLC only | High Is. Blk. 24L (FB-E, HF) | High IS-LB | 1 | 5.98K | 690K | Feb 1998 – Mar 1999 |
| Amis Gas Unit G-6-223436 | Soldier Creek Energy, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 5.96K | 822K | Aug 2006 – Apr 2026 |
| University -C- O-10-26433 | Merit Energy Company only | Block 31 (Devonian) | Crane | 1 | 5.93K | 16.5K | Jan 1993 – Oct 1998 |
| Crippled Horse O-10-61633 | Vin Fisher Operating, Inc. only | Block a-34 (San Andres) | Andrews | 4 | 5.9K | 0 | Oct 2024 – Apr 2026 |
| High Island 24L SL59456 G-3-180132 | Jefferson Block 24 Oil & Gas LLC only | High Is. Blk. 24L (FB-E, JG) | High IS-LB | 1 | 5.89K | 838K | May 2000 – Apr 2003 |