| George, T.W. Gas Unit "A" G-6-230463 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 5.15K | 1.06M | Jul 2007 – Apr 2026 |
| Block 86 Unit G-2-57691 | Sheridan Energy,inc. only | Clayton (Block 75 SD) | Live Oak | 1 | 5.14K | 181K | Jan 1993 – Jul 1998 |
| Bath Gas Unit "B" G-6-138813 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 5.14K | 1.4M | Jan 1993 – Apr 2026 |
| Mobley Gas Unit G-6-180626 | Valence Operating Company only | Blocker (Cotton Valley) | Harrison | 1 | 5.13K | 888K | Oct 2000 – Aug 2015 |
| Dorsett, W.N. Gas Unit G-6-144003 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 5.11K | 1.2M | Jan 1993 – Apr 2026 |
| Block G-4-277340 | Petrovybe Opco LLC only | La Grulla (Yegua 7100) | Starr | 1 | 5.06K | 633K | Feb 2015 – Apr 2026 |
| Woods "B" G-6-182489 | Brookston Energy, Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 5.05K | 1.29M | Apr 2001 – Feb 2026 |
| Brune-Burnett -C- Gas Unit G-6-230091 | Sponte Operating, Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 5.05K | 374K | Apr 2007 – Nov 2015 |
| Bath Gas Unit "B" G-6-221856 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 5.03K | 582K | Apr 2006 – Apr 2026 |
| Resch Gas Unit "B" G-6-152669 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 4.99K | 812K | Dec 1994 – Oct 2014 |
| Anderson G-6-199015 | Sabine Oil & Gas Corporation only | Blocker (Cotton Valley) | Harrison | 1 | 4.99K | 758K | Nov 2003 – Feb 2019 |
| Bath Gas Unit A G-6-221787 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 4.98K | 1.05M | Apr 2006 – Mar 2022 |
| Dinkle G-6-203783 | Sabine Energy Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 4.98K | 898K | Jun 2004 – Mar 2026 |
| Mobley G-6-100843 | Valence Operating Company only | Blocker (Cotton Valley) | Harrison | 1 | 4.98K | 658K | Jan 1993 – Mar 2008 |
| Roscoe, Rosa R. Gas Unit G-6-140898 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 4.96K | 836K | Jan 1993 – Apr 2026 |
| James Gas Unit G-6-171238 | BP America Production Company only | Blocker (Cotton Valley) | Harrison | 1 | 4.96K | 348K | Oct 1998 – Sep 2015 |
| Bath Gas Unit A G-6-87773 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 4.96K | 1.05M | Jan 1993 – Apr 2026 |
| Wood Unit G-10-59062 | Samson Lone Star LP only | Block 16 (Ellen.) | Ward | 1 | 4.94K | 477K | Jan 1993 – Mar 2003 |
| Brewster, Nancy Gas Unit G-6-143050 | BP America Production Company only | Blocker (Cotton Valley) | Harrison | 1 | 4.94K | 1.27M | Jan 1993 – Jul 2020 |
| Brewster, Nancy Gas Unit G-6-167766 | BP America Production Company only | Blocker (Cotton Valley) | Harrison | 1 | 4.92K | 890K | Jan 1998 – Aug 2009 |
| Brewster, Nancy Gas Unit G-6-142108 | BPX Operating Company only | Blocker (Cotton Valley) | Harrison | 1 | 4.91K | 959K | Jan 1993 – Dec 2015 |
| Washington, Emanuel Gas Unit G-6-144318 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 4.91K | 983K | Jan 1993 – Apr 2026 |
| East Side Block Unit G-4-167539 | Wallis Energy, Inc. only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 4.9K | 263K | Mar 1998 – Apr 2026 |
| Mohon GU G-6-206499 | Soldier Creek Energy, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 4.87K | 520K | Nov 2004 – Nov 2025 |
| Knackstedt, G.C. Gas Unit G-6-181457 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 4.87K | 331K | Jan 2001 – Apr 2026 |
| Rosborough Gas Unit "B" G-6-216023 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 4.85K | 480K | Aug 2005 – Apr 2026 |
| Shaw Gas Unit G-6-140724 | East Texas Exploration, LLC only | Blocker (Travis Peak) | Harrison | 1 | 4.85K | 1.5M | Jan 1993 – Aug 2015 |
| State "OB" O-10-24082 | Cimarex Energy Co. of Colorado only | Block 17, Southeast (Delaware) | Ward | 1 | 4.83K | 15.2K | Jan 1993 – Oct 2014 |
| Knackstedt, G.C. Gas Unit G-6-141386 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 4.83K | 1.44M | Jan 1993 – Apr 2026 |
| Justice Gas Unit G-6-223440 | Soldier Creek Energy, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 4.79K | 794K | Aug 2006 – Apr 2026 |
| Whittaker G-6-192545 | Sabine Oil & Gas Corporation only | Blocker (Cotton Valley) | Harrison | 1 | 4.77K | 756K | Dec 2002 – Nov 2017 |
| University 40-6 O-10-33573 | Coastal Management Corporation only | Block 6, NE. (Spraberry) | Andrews | 1 | 4.76K | 8.01K | Jan 1993 – Jan 1997 |
| Block #35 O-1-3141 | W.W. Energy only | Salt Flat | Caldwell | 1 | 4.71K | 2.35K | Jan 1993 – Sep 2023 |
| Amis Gas Unit G-6-227983 | Soldier Creek Energy, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 4.7K | 705K | Jan 2007 – Apr 2026 |
| Offshoot 20 O-10-46830 | WTG Exploration only | Block a-34 (San Andres) | Andrews | 4 | 4.69K | 3.64K | Jun 2015 – Oct 2019 |
| Block 85 Unit G-2-169313 | Hedrick Production Inc. only | Clayton (Block 85 SD) | Live Oak | 1 | 4.68K | 356K | Mar 1998 – Oct 2002 |
| Thompson Gas Unit -B- G-6-99999 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 4.68K | 716K | Jan 1993 – Apr 2026 |
| McGinty O-11-67564 | Ring Energy, Inc. only | Block D (Devonian) | Yoakum | 1 | 4.65K | 0 | Nov 2010 – Oct 2012 |
| Brown, Katherine J. Gas Unit G-6-141431 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 4.65K | 1.44M | Jan 1993 – Apr 2026 |
| East Block A G-4-276984 | D. O. G. Operating, LLC only | Mestena Grande (Queen City Cons) | Jim Hogg | 1 | 4.65K | 171K | Oct 2015 – Mar 2026 |
| Patterson-Herrin Gas Unit G-6-87089 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 4.64K | 1.01M | Jan 1993 – Apr 2026 |
| Bartlett-Bailey Gas Unit #1 G-6-142838 | Breitburn Operating L.P. only | Blocker (Cotton Valley) | Harrison | 1 | 4.64K | 969K | Jan 1993 – Nov 2010 |
| Block 88 O-1-11674 | Shefts & Shefts, Inc. only | Salt Flat | Caldwell | 1 | 4.63K | 875 | Jan 1993 – Apr 2024 |
| Resch, Kathleen M. G-6-140121 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 4.63K | 1.44M | Jan 1993 – Apr 2026 |
| Becker, Jossie Taylor Gas Unit G-6-219851 | Brammer Engineering, Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 4.62K | 857K | Mar 2006 – Apr 2026 |
| Block 31 Unit G-10-279799 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 4.61K | 1.37M | Aug 2015 – Apr 2026 |
| Block 75 Unit G-2-136265 | Sage Energy Company only | Clayton (Block 86 SD) | Live Oak | 1 | 4.6K | 232K | Jan 1993 – Sep 1998 |
| Blocker-Fultz #1 O-6-12848 | GMX Resources Inc. only | Blocker (Richardson Sand) | Harrison | 2 | 4.59K | 24.1K | Jan 1993 – Feb 1999 |
| George, T.W. Gas Unit "B" G-6-84939 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 4.58K | 1.03M | Jan 1993 – Dec 2024 |
| Dudeck Heirs Gas Unit G-6-96849 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 4.57K | 947K | Jan 1993 – Apr 2026 |