| McGee, June O-10-29512 | Phoenix Hydrocarbons Operating only | Block 31, NW. (Penn Upper) | Crane | 1 | 8.71K | 623 | Jan 1993 – Aug 1999 |
| Riethmeyer,e. Gas Unit G-4-237523 | Block "T" Petroleum, Inc. only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 8.7K | 2.15M | Apr 2008 – Apr 2026 |
| 7810 JV-P Corner O-10-25271 | BTA Oil Producers only | Block 6, NE. (Spraberry) | Andrews | 1 | 8.64K | 22.2K | Jan 1993 – Dec 1997 |
| Thompson, J. Phillip Gas Unit G-6-167007 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 8.61K | 1.41M | Jan 1998 – Apr 2026 |
| Patterson-Herrin Gas Unit G-6-202866 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 8.59K | 1.47M | Apr 2004 – Apr 2026 |
| Allen, Lenora Gas Unit G-6-230595 | Spindletop Oil & Gas Company only | Blocker (Cotton Valley) | Harrison | 1 | 8.51K | 809K | Jul 2007 – Apr 2026 |
| Young, Delcia M. -B- G-6-223141 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 8.47K | 793K | Aug 2006 – Apr 2026 |
| Watson, L. A. et al B G-10-52064 | XTO Energy Inc. only | Block 16 (Devonian) | Ward | 1 | 8.39K | 3.57M | Jan 1993 – Jun 2002 |
| Merchant Block 4 O-3-7622 | De-Vac Inc. only | Hull | Liberty | 2 | 8.32K | 13 | Jan 1993 – Sep 2012 |
| Brewster, Nancy Gas Unit G-6-94001 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 8.3K | 1.37M | Jan 1993 – Apr 2026 |
| Resch, Kathleen M. G-6-168113 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 8.26K | 1.29M | Jan 1998 – Apr 2026 |
| University "11" O-9-16198 | RRP Operating LLC only | Block 44 (Lower Ellenburger) | Crockett | 2 | 8.2K | 0 | Feb 2007 – Jun 2014 |
| Allen, Lenora Gas Unit G-6-233705 | Spindletop Oil & Gas Company only | Blocker (Cotton Valley) | Harrison | 1 | 8.18K | 1.33M | Sep 2007 – Apr 2026 |
| Blocker, W. O. O-13-29641 | DWP Oil & Gas only | Chico, West (Caddo Congl. Upper) | Wise | 1 | 8.16K | 131K | May 1999 – Apr 2026 |
| Ware Gas Unit -A- G-6-92389 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 8.12K | 1.25M | Jan 1993 – Apr 2026 |
| University O-9-2335 | Octane Energy Operating, LLC only | Block 4 (Devonian) | Upton | 1 | 8.1K | 550K | Jan 1993 – Jan 2023 |
| State Tract 98-L G-3-194190 | Maritech Resources, Inc. only | Block 98-L (MA-4B) | High IS-LB | 1 | 8.1K | 1.22M | Feb 2003 – Jun 2006 |
| Brown, Maude B. Gas Unit G-6-221208 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 8.08K | 1.42M | Feb 2006 – Apr 2026 |
| Blocker 3 O-10-44996 | Reliance Energy, Inc. only | Mabee (Strawn) | Martin | 1 | 8.08K | 8.43K | Apr 2014 – Apr 2026 |
| Parish, Joseph G-6-219180 | RFE Operating, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 8.06K | 798K | Jan 2006 – Apr 2026 |
| State of Texas -X- O-10-391 | Texaco E & P Inc. only | Block 7 (Devonian) | Martin | 1 | 8.06K | 18 | Jan 1993 – Jan 1995 |
| Becker, H.G. Gas Unit G-6-141496 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 8.04K | 1.25M | Jan 1993 – Mar 2026 |
| Bartlett-Bailey Gas Unit #1 G-6-143401 | Walkabout Operating, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 8.03K | 1.68M | Jan 1993 – Apr 2026 |
| Block 31 Unit G-10-218737 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 7.95K | 3.08M | Nov 2010 – Apr 2026 |
| M. K. Dreyfus-Blocker (Alloc.) G-6-275215 | TGNR East Texas II LLC only | Waskom (Cotton Valley) | Harrison | 1 | 7.94K | 3.62M | Aug 2014 – Apr 2026 |
| Block 86 Unit G-2-191444 | Hedrick Production Inc. only | Clayton (Massive) | Live Oak | 1 | 7.92K | 545K | Mar 1999 – Sep 2012 |
| Thompson, J. Philip Gas Unit G-6-213520 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 7.91K | 1.11M | May 2005 – Apr 2026 |
| Arabian 3 O-10-46966 | WTG Exploration only | Block a-34 (San Andres) | Andrews | 1 | 7.9K | 2.82K | Jun 2015 – Apr 2026 |
| Johnson, W. D. G-10-130795 | Two P Partners, LLC only | Estes Block 34 (Penn.) | Ward | 1 | 7.9K | 269K | Jan 1993 – Mar 2021 |
| Block #22-Alex #1 O-1-3067 | W.W. Energy only | Salt Flat | Caldwell | 1 | 7.89K | 2.81K | Jan 1993 – Nov 2025 |
| University -15- O-9-12840 | Aratex Production Company only | Block 38 (Ellenburger) | Crockett | 1 | 7.85K | 45K | Jan 1993 – Nov 1997 |
| Cooper 49 G-10-152791 | XTO Energy Inc. only | Block 16 (Montoya) | Ward | 1 | 7.83K | 2.66M | Dec 1994 – Apr 2026 |
| Campbell Estate et Al G-10-54150 | XTO Energy Inc. only | Block 16 (Devonian) | Ward | 1 | 7.81K | 5.89M | Jan 1993 – Mar 2026 |
| Block 35 O-6-11195 | Arcadia Expl. & Prod. Company only | Talco | Titus | 1 | 7.8K | 21 | Jan 1993 – Sep 2002 |
| East Block B G-4-276981 | D. O. G. Operating, LLC only | Mestena Grande (Queen City Cons) | Jim Hogg | 1 | 7.8K | 253K | Oct 2015 – Mar 2026 |
| Becker, H.G. Gas Unit G-6-190096 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 7.8K | 797K | May 2001 – Apr 2026 |
| McElroy Ranch "F" O-9-13644 | Devon Energy Production Co, L.P. only | Block 42 (Wichita Albany) | Upton | 2 | 7.8K | 50.1K | Apr 1994 – Apr 2002 |
| University L O-10-33314 | Williams Oil Company only | Block 17 | Winkler | 1 | 7.78K | 43 | Jan 1993 – Dec 1998 |
| Allen, Lenora Gas Unit G-6-231463 | Spindletop Oil & Gas Company only | Blocker (Cotton Valley) | Harrison | 1 | 7.77K | 959K | Jul 2007 – Apr 2026 |
| State of Texas -R- O-10-424 | Endeavor Energy Resources L.P. only | Block 12 | Andrews | 2 | 7.75K | 52.7K | Jan 1993 – Mar 2004 |
| Simpson O-10-25318 | Bald Eagle Operating Inc. only | Block a-34 (Yates) | Gaines | 2 | 7.73K | 9.56K | Jan 1993 – Dec 2025 |
| Matthews, William Gas Unit G-6-208044 | Sponte Operating, Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 7.71K | 592K | Nov 2004 – Feb 2018 |
| Ware Gas Unit -A- G-6-142330 | BP America Production Company only | Blocker (Cotton Valley) | Harrison | 1 | 7.69K | 855K | Jan 1993 – May 2010 |
| Blalock "A" G-6-262182 | Sabine Energy Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 7.66K | 3.2M | Sep 2011 – Apr 2026 |
| Block 75 Unit G-2-133093 | Sage Energy Company only | Clayton (Block 86 SD) | Live Oak | 1 | 7.66K | 755K | Jan 1993 – Oct 1999 |
| American National Life Ins. Co. O-10-38350 | Eagle Rock Operating Company,llc only | Estes Block-34 (Holt) | Ward | 2 | 7.64K | 34.5K | Aug 2007 – Mar 2014 |
| Greer, Cecil B. Gas Unit G-6-223438 | Soldier Creek Energy, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 7.62K | 898K | Sep 2006 – Apr 2026 |
| Block 31 Unit G-10-257316 | Hilcorp Energy Company only | Block 31 (Penn. 7620) | Crane | 1 | 7.6K | 648K | Apr 2010 – Apr 2026 |
| McDonald, Myrtle G-10-178786 | XTO Energy Inc. only | Block 16 (Montoya) | Ward | 1 | 7.57K | 9.3M | Feb 2000 – Mar 2026 |
| Washington, Emanuel Gas Unit G-6-233858 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 7.57K | 969K | Nov 2007 – Apr 2026 |