| Bath Gas Unit A G-6-138810 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 5.89K | 1.22M | Jan 1993 – Apr 2026 |
| Becker, Jossie Taylor Gas Unit G-6-242520 | Brammer Engineering, Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 5.85K | 748K | Aug 2008 – Apr 2026 |
| Roscoe, Rosa R. Gas Unit G-6-89737 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 5.85K | 1.25M | Jan 1993 – Apr 2026 |
| Dorsett, W.N. Gas Unit G-6-94003 | BP America Production Company only | Blocker (Cotton Valley) | Harrison | 1 | 5.82K | 880K | Jan 1993 – Aug 2016 |
| Justice Gas Unit G-6-230226 | Soldier Creek Energy, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 5.81K | 521K | Jan 2007 – Apr 2026 |
| Wheeler G-6-233174 | Fortune Resources LLC only | Blocker (Cotton Valley) | Harrison | 1 | 5.78K | 931K | Oct 2007 – Mar 2026 |
| Mohon GU G-6-97644 | Soldier Creek Energy, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 5.76K | 789K | Jan 1993 – Apr 2026 |
| Runnels, Mack V. Gas Unit G-6-138815 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 5.76K | 1.5M | Jan 1993 – Sep 2018 |
| State of Texas Block 582-S G-3-180649 | Vamos Oil & Gas, LLC only | Matagorda Island BLK.582-S(m-1) | Matgrda IS-SB | 1 | 5.76K | 4.39M | Sep 2000 – Aug 2007 |
| Bath Gas Unit A G-6-142667 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 5.75K | 1.17M | Jan 1993 – Jan 2014 |
| Woods "B" G-6-161185 | Brookston Energy, Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 5.75K | 899K | Dec 1996 – Feb 2026 |
| Washington, Emanuel Gas Unit G-6-141109 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 5.72K | 1.07M | Jan 1993 – Apr 2026 |
| University -36A- O-10-60018 | Formentera Operations LLC only | Block 31 (Penn. 7620) | Crane | 1 | 5.71K | 9.22K | Aug 2023 – Apr 2026 |
| Lone Star Block 29 O-13-19412 | Goodner, Rob Oil Interest only | Clay County Regular | Clay | 7 | 5.71K | 20 | Jan 1993 – Mar 2012 |
| Dudeck Heirs Gas Unit G-6-217744 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 5.71K | 1.04M | Dec 2005 – Apr 2026 |
| University 20-12 O-10-35069 | Lonesome B, LLC only | Block 20 (Bone Spring) | Winkler | 2 | 5.7K | 7.59K | Aug 1996 – Apr 1997 |
| Brune-Burnett Gas Unit "B" G-6-229468 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 5.69K | 924K | May 2007 – Jun 2022 |
| Woods "B" G-6-225461 | Brookston Energy, Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 5.69K | 944K | Jul 2006 – Apr 2026 |
| Resch, Kathleen M. G-6-141818 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 5.67K | 1.92M | Jan 1993 – Feb 2019 |
| Rosborough, Dr. J.F. Gas Unit G-6-234541 | Brookston Energy, Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 5.67K | 992K | Jan 2008 – Apr 2026 |
| Thompson, J. Philip Gas Unit G-6-140519 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 5.64K | 1.25M | Jan 1993 – Apr 2026 |
| George, T.W. Gas Unit "A" G-6-212403 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 5.61K | 1.01M | Apr 2005 – Apr 2026 |
| Brune-Burnett Gas Unit "B" G-6-241851 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 5.54K | 840K | Jun 2007 – Apr 2026 |
| W.D. Johnson O-10-50290 | Sundown Energy LP only | Estes Block 34 (Penn.) | Ward | 1 | 5.51K | 49K | May 2018 – Jan 2019 |
| Chauvin-Landry Gas Unit G-6-220762 | Sponte Operating, Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 5.49K | 720K | Mar 2006 – Aug 2022 |
| Roscoe, Rosa R. Gas Unit G-6-244730 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 5.49K | 3.21M | Jul 2008 – Apr 2026 |
| Mobley G-6-159427 | Valence Operating Company only | Blocker (Cotton Valley) | Harrison | 1 | 5.45K | 725K | Jul 1996 – Aug 2005 |
| Resch, Kathleen M. G-6-82658 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 5.43K | 768K | Jan 1993 – Sep 2017 |
| Woods "B" G-6-184706 | Brookston Energy, Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 5.4K | 1.02M | Aug 2001 – Feb 2026 |
| Thoroughbred 11 O-10-46845 | WTG Exploration only | Block a-34 (San Andres) | Andrews | 2 | 5.4K | 8.86K | Sep 2015 – Apr 2026 |
| Brune-Burnett -C- Gas Unit G-6-230882 | Sponte Operating, Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 5.39K | 857K | Oct 2006 – Feb 2016 |
| Block O-14-121 | Fort Worth Natural Gas, Inc. only | Panhandle Carson County Field | Carson | 7 | 5.39K | 2.51K | Jan 1993 – Sep 1999 |
| Bath Gas Unit A G-6-221548 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 5.38K | 760K | Mar 2006 – Aug 2022 |
| Runnels, Mack V. Gas Unit G-6-141705 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 5.32K | 1.57M | Jan 1993 – Apr 2026 |
| Roden, Mary L. Gas Unit G-6-90396 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 5.32K | 1.03M | Jan 1993 – Apr 2026 |
| Justice Gas Unit G-6-223439 | Soldier Creek Energy, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 5.32K | 719K | Aug 2006 – Apr 2026 |
| Knackstedt, G.C. Gas Unit G-6-140344 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 5.3K | 1.47M | Jan 1993 – Apr 2026 |
| Block 70 Unit 3 O-2-8113 | Bay Rock Operating Company only | Clayton (Queen City) | Live Oak | 1 | 5.3K | 184 | Sep 1995 – Apr 2010 |
| State of Texas -AB- O-10-30806 | Texaco E & P Inc. only | Block 5 (Wolfcamp) | Andrews | 1 | 5.3K | 4.66K | Jan 1993 – Dec 1994 |
| University "6-32" O-10-25577 | Westland Oil Development Corp. only | Block 6, NE. (Spraberry) | Andrews | 1 | 5.29K | 3.1K | Jan 1993 – Apr 1998 |
| Roden, Mary L. Gas Unit G-6-217116 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 5.29K | 1.17M | Oct 2005 – Apr 2026 |
| University D O-10-34849 | Oilfield Management, Inc. (A) only | Block 6 (Strawn) | Andrews | 1 | 5.27K | 11.3K | Feb 1996 – Feb 1998 |
| Block 31 Unit G-10-279628 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 5.26K | 1.08M | Oct 2015 – Apr 2026 |
| Becker, Jossie Taylor Gas Unit G-6-235146 | Brammer Engineering, Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 5.26K | 719K | Feb 2008 – Dec 2014 |
| University "6-13" O-10-36831 | WTG Exploration only | University Block 6 (Devonian) | Gaines | 1 | 5.23K | 0 | Mar 2002 – May 2004 |
| Mohon GU G-6-222221 | Soldier Creek Energy, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 5.21K | 681K | Sep 2005 – Nov 2025 |
| George, T.W. Gas Unit "A" G-6-142050 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 5.2K | 1.13M | Jan 1993 – Apr 2026 |
| Roden, Mary L. Gas Unit G-6-138530 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 5.2K | 1.36M | Jan 1993 – Apr 2026 |
| State Tract 98-L G-3-188835 | Coastland Operations, LLC only | Block 98-L (SD-A) | High IS-LB | 1 | 5.16K | 496K | Jan 2002 – Dec 2002 |
| Mohon GU G-6-181265 | Soldier Creek Energy, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 5.15K | 772K | Jan 2001 – May 2014 |