| Roden, Mary L. Gas Unit G-6-142211 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 3.56K | 994K | Jan 1993 – Jan 2025 |
| Woods "B" G-6-139335 | Brookston Energy, Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 3.55K | 705K | Jan 1993 – Apr 2026 |
| Block 31 Unit G-10-279504 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 3.54K | 634K | Oct 2015 – Apr 2026 |
| Young, Delcia M. -B- G-6-235246 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 3.54K | 353K | Jan 2008 – Apr 2026 |
| Anderson G-6-197645 | Sabine Energy Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 3.54K | 384K | Sep 2003 – Jun 2019 |
| Glasscock "W" Fee G-10-204153 | Chevron U. S. A. Inc. only | Block 32 (Wolfcamp) | Glasscock | 1 | 3.52K | 29.9K | Nov 2003 – Sep 2011 |
| University "47A" G-10-169039 | Formentera Operations LLC only | Block 31 (Queen) | Crane | 1 | 3.5K | 62K | Jun 1998 – Apr 2026 |
| Coffman-Blocker O-13-21680 | Doolaree Corporation only | Sherman (Woodson Zone 8) | Grayson | 1 | 3.49K | 926 | Jan 1993 – Nov 1998 |
| Terrell Gas Unit G-6-218576 | Pedernales Petroleum OP, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 3.49K | 516K | Dec 2005 – Dec 2023 |
| Ware Gas Unit -A- G-6-152346 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 3.47K | 660K | Nov 1994 – Nov 2007 |
| University "7-3" O-10-33601 | Mitchell Energy Corporation only | Block 7 (Permo-Penn) | Martin | 1 | 3.47K | 2.45K | Jan 1993 – Apr 1995 |
| Brown, Katherine J. Gas Unit G-6-140781 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 3.47K | 734K | Jan 1993 – Apr 2026 |
| Mosley, Thelma Gas Unit G-6-226578 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 3.45K | 439K | Jan 2007 – Feb 2026 |
| Brune-Burnett -C- Gas Unit G-6-221200 | Sponte Operating, Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 3.44K | 607K | Jan 2006 – May 2016 |
| Woods "B" G-6-210900 | Brookston Energy, Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 3.43K | 694K | Apr 2005 – Apr 2026 |
| University "B" O-9-15060 | Reliance Energy, Inc. only | Block 38 (Spraberry) | Crockett | 1 | 3.42K | 0 | Aug 2000 – Sep 2015 |
| Brown, Maude B. Gas Unit G-6-141478 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 3.42K | 1.11M | Jan 1993 – May 2017 |
| Blocker Heirs G-6-235868 | Enpower Resources Inc. only | Carthage, North (Cotton Valley) | Harrison | 1 | 3.41K | 459K | Jun 2007 – Apr 2026 |
| Daniels "a" Gas Unit G-6-221459 | TGNR East Texas II LLC only | Blocker (Cotton Valley) | Harrison | 1 | 3.41K | 391K | May 2006 – Oct 2015 |
| Whittaker G-6-225273 | Sabine Energy Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 3.38K | 567K | Jan 2007 – Apr 2026 |
| Vann, Aurelia Gas Unit G-6-97404 | BP America Production Company only | Blocker (Cotton Valley) | Harrison | 1 | 3.37K | 974K | Jan 1993 – Aug 2007 |
| Washington,e.w. Heirs Gas Unit 1 G-6-216261 | TGNR East Texas II LLC only | Blocker (Cotton Valley) | Harrison | 1 | 3.37K | 662K | Sep 2005 – Dec 2025 |
| Block 86 Unit #3 G-2-176647 | Hedrick Production Inc. only | Clayton (Massive) | Live Oak | 1 | 3.37K | 247K | May 1999 – Mar 2026 |
| State Tract 336-L SE/4 G-3-133577 | Fairways Spec. Sales & Serv Inc only | Brazos Block 336-L (C-54) | Brazos-LB | 1 | 3.37K | 1.86M | Jan 1993 – Sep 1996 |
| Washington, Emanuel Gas Unit G-6-180856 | BP America Production Company only | Blocker (Cotton Valley) | Harrison | 1 | 3.37K | 622K | Dec 2000 – Jul 2019 |
| Becker, H.G. Gas Unit G-6-216022 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 3.35K | 254K | Aug 2005 – Mar 2025 |
| King, W. E. O-10-34795 | Abarta Oil & Gas Co., Inc. only | Block a-34, Northwest (Glorieta) | Andrews | 2 | 3.35K | 48 | Oct 1995 – Oct 1999 |
| Patterson-Herrin Gas Unit G-6-213562 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 3.34K | 1.02M | Jun 2005 – Apr 2026 |
| Blalock "A" G-6-211913 | Sabine Energy Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 3.34K | 416K | Feb 2005 – Apr 2026 |
| Pyote Gas Unit NO 2 G-10-147248 | XTO Energy Inc. only | Block 16 (Devonian) | Ward | 1 | 3.32K | 9.15M | Sep 1993 – Mar 2026 |
| Dorsett, W.N. Gas Unit G-6-153341 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 3.32K | 641K | Jan 1995 – Feb 2008 |
| Mosley, Thelma Gas Unit G-6-178378 | Valence Operating Company only | Blocker (Cotton Valley) | Harrison | 1 | 3.31K | 581K | Apr 2000 – Apr 2012 |
| State Tract 368-L G-3-186927 | El Paso Production Oil & Gas Co. only | Block 368-L (7080) | Brazos-LB | 1 | 3.3K | 208K | Nov 2001 – Jan 2002 |
| Blocker, W. O. et Al O-13-16618 | Itx Pipeline Company, LLC only | Chico, West (Conglomerate 5700) | Wise | 2 | 3.3K | 351K | Jan 1993 – Apr 2026 |
| University 31-6 O-10-41909 | Devon Energy Production Co, L.P. only | Block 31, NW. (Penn Upper) | Crane | 1 | 3.29K | 858 | Apr 2011 – Nov 2014 |
| Block 31 Unit G-10-279500 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 3.29K | 1.22M | Oct 2015 – Apr 2026 |
| Knackstedt, G.C. Gas Unit G-6-182419 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 3.25K | 383K | Mar 2001 – Aug 2017 |
| Watson, L. A. et Al G-10-48904 | XTO Energy Inc. only | Block 16 (Devonian) | Ward | 1 | 3.25K | 996K | Jan 1993 – Apr 2026 |
| Harris, James Gas Unit G-6-90395 | Valence Operating Company only | Blocker (Cotton Valley) | Harrison | 1 | 3.22K | 744K | Jan 1993 – Sep 2021 |
| Block, Ida O-14-1651 | Red Line Company, Ltd. only | Panhandle Carson County Field | Carson | 2 | 3.2K | 8.07K | Jan 1993 – Oct 2014 |
| Block 31 Unit G-10-287136 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 3.2K | 2.43M | Mar 2019 – Feb 2026 |
| Block #36 O-1-3048 | W.W. Energy only | Salt Flat | Caldwell | 1 | 3.19K | 533 | Jan 1993 – Aug 2022 |
| George, T.W. Gas Unit "A" G-6-214984 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 3.19K | 645K | Jul 2005 – Apr 2026 |
| Block #22 O-2-1122 | H & G Oil only | Pettus | Bee | 1 | 3.18K | 35 | Jan 1993 – Sep 1996 |
| Rosborough, Dr. J.F. Gas Unit G-6-220766 | Brookston Energy, Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 3.18K | 600K | Mar 2006 – Apr 2026 |
| Harris-Munden GU G-6-206254 | Craton Operating LLC only | Blocker (Cotton Valley) | Harrison | 1 | 3.17K | 249K | Nov 2004 – Jun 2023 |
| Brune-Burnett Gas Unit "B" G-6-144146 | BP America Production Company only | Blocker (Cotton Valley) | Harrison | 1 | 3.17K | 858K | Feb 1993 – Nov 2016 |
| Roscoe, Rosa R. Gas Unit G-6-140688 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 3.16K | 1.13M | Jan 1993 – Apr 2026 |
| Block 31 Unit G-10-279846 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 3.15K | 1.31M | Aug 2015 – Apr 2026 |
| Woods "B" G-6-208435 | Brookston Energy, Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 3.15K | 735K | Feb 2005 – Aug 2025 |