| University Block 42 G-9-163253 | Burlington Resources Oil&gas Co. only | Redemption (Ellenburger) | Crockett | 1 | 2.72K | 9.28K | Apr 1997 – Oct 1997 |
| Dinkle G-6-225276 | Sabine Oil & Gas Corporation only | Blocker (Cotton Valley) | Harrison | 1 | 2.72K | 428K | Dec 2006 – Dec 2015 |
| Harris-Munden GU G-6-82659 | NFR Energy, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 2.72K | 262K | Jan 1993 – Mar 2010 |
| S.T. 218-L S/2 SE/4 G-3-246824 | Hall-Houston Expl. III, L.P. only | Galveston Block 218-L (RL-5SAND) | Galveston-LB | 1 | 2.71K | 653K | Nov 2008 – Mar 2010 |
| Weatherby-Weatherby Gas Unit G-4-139577 | Block "T" Petroleum, Inc. only | Rosita, NW (Wilcox Cons.) | Duval | 1 | 2.71K | 4.03M | Jan 1993 – Apr 2026 |
| James Gas Unit G-6-91274 | BP America Production Company only | Blocker (Cotton Valley) | Harrison | 1 | 2.71K | 1.35M | Jan 1993 – Sep 2008 |
| State Tract 405-LN/2 SE/4 G-3-224098 | Black Pool Energy, LP only | Brazos Block 405 (10,040 Sand) | Brazos-LB | 1 | 2.69K | 3.17M | Aug 2006 – Oct 2018 |
| Thompson, J. Phillip Gas Unit G-6-87530 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 2.69K | 605K | Jan 1993 – Jun 2016 |
| Crews & Mast "A" G-10-68274 | Bald Eagle Operating Inc. only | Block a-34 (Yates) | Andrews | 1 | 2.68K | 48K | Aug 1997 – Oct 2022 |
| Block 31 Unit G-10-279626 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 2.67K | 713K | Oct 2015 – Apr 2026 |
| Tutt, W. R. G-6-118364 | Valence Operating Company only | Blocker (Cotton Valley) | Harrison | 1 | 2.66K | 170K | Jan 1993 – Apr 2026 |
| Chauvin-Landry Gas Unit G-6-216044 | BP America Production Company only | Blocker (Cotton Valley) | Harrison | 1 | 2.66K | 523K | Sep 2005 – Jul 2010 |
| Bartlett-Bailey Gas Unit #1 G-6-169077 | Walkabout Operating, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 2.65K | 386K | Apr 1998 – Dec 2007 |
| Anderson G-6-226254 | Sabine Energy Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 2.65K | 511K | Dec 2006 – Apr 2026 |
| Block 86 Unit G-2-144230 | Parker & Parsley Development L.P only | Clayton (Block 86 SD) | Live Oak | 1 | 2.65K | 479K | Jan 1993 – Apr 1996 |
| Block 31 Unit G-10-279503 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 2.63K | 379K | Oct 2015 – Apr 2026 |
| Brown, Maude B. Gas Unit G-6-236684 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 2.62K | 486K | Apr 2008 – Apr 2026 |
| Harris-Munden Gas Unit G-6-206022 | Encana Oil & Gas(usa) Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 2.62K | 295K | Oct 2004 – Apr 2007 |
| Wight, A. W. G-10-166519 | Contango Resources, LLC only | Block 27 (Tubb) | Crane | 1 | 2.62K | 152K | Nov 1997 – Sep 2012 |
| Block #38 O-1-3155 | W.W. Energy only | Salt Flat | Caldwell | 1 | 2.61K | 2.57K | Jan 1993 – Sep 2023 |
| State University -DG- O-10-29585 | McDonnold Operating, Inc. only | Block 16 (Bone Springs) | Ward | 1 | 2.61K | 15 | Nov 1993 – Apr 1995 |
| Dinkle G-6-206253 | Sabine Oil & Gas Corporation only | Blocker (Cotton Valley) | Harrison | 1 | 2.6K | 669K | Oct 2004 – Oct 2017 |
| E. Riethmeyer Gas Unit G-4-232265 | Block "T" Petroleum, Inc. only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 2.59K | 1.01M | Aug 2007 – Nov 2011 |
| High Island 24L SL 59455 G-3-174818 | Jefferson Block 24 Oil & Gas LLC only | High Is. Blk. 24L (FB-C, GK) | High IS-LB | 1 | 2.58K | 2.84K | Oct 2007 – Mar 2008 |
| University "47A" G-10-168030 | Formentera Operations LLC only | Block 31 (Queen) | Crane | 1 | 2.57K | 303K | Mar 1998 – Apr 2026 |
| Vann, Aurelia Gas Unit G-6-141576 | BPX Operating Company only | Blocker (Cotton Valley) | Harrison | 1 | 2.56K | 708K | Jan 1993 – Sep 2009 |
| University 11-18 "A" G-10-158167 | Texaco E & P Inc. only | Block 18 (Cherry Canyon) | Ward | 1 | 2.5K | 90.1K | Mar 1996 – Jul 1996 |
| Bath Gas Unit "B" G-6-141816 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 2.5K | 950K | Jan 1993 – Apr 2026 |
| Blalock Gas Unit 2 G-6-227893 | TGNR East Texas II LLC only | Blocker (Cotton Valley) | Harrison | 1 | 2.48K | 679K | Apr 2007 – Apr 2026 |
| Blocker Heirs G-6-228313 | Enpower Resources Inc. only | Carthage, North (Cotton Valley) | Harrison | 1 | 2.47K | 465K | Jan 2007 – May 2023 |
| Bath Gas Unit "B" G-6-87908 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 2.46K | 963K | Jan 1993 – Apr 2026 |
| Blalock "A" G-6-223421 | Sabine Energy Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 2.46K | 291K | Aug 2006 – Feb 2018 |
| State Tract 338-L Unit G-3-140446 | Samson Contour Energy E&P, LLC only | Brazos Block 338-L (Miocene) | Brazos-LB | 1 | 2.44K | 4.05M | Jan 1993 – Apr 2003 |
| Blalock Gas Unit 2 G-6-217844 | TGNR East Texas II LLC only | Blocker (Cotton Valley) | Harrison | 1 | 2.42K | 1.21M | Jan 2006 – Apr 2026 |
| Blocker, W. O. G-13-163438 | DWP Oil & Gas only | Morris (Consolidated Congl.) | Wise | 1 | 2.41K | 240K | Mar 1997 – Apr 2026 |
| Becker, Jossie Taylor Gas Unit G-6-245682 | Brammer Engineering, Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 2.4K | 348K | Jan 2009 – Dec 2020 |
| Junior Varsity O-10-45326 | Ring Energy, Inc. only | Block a-34, Northwest (Glorieta) | Andrews | 1 | 2.4K | 0 | Aug 2014 – Jun 2015 |
| Rogers, V. G. O-6-14286 | RFE Operating, LLC only | Blocker (Page) | Harrison | 1 | 2.39K | 59.3K | Dec 2003 – Jul 2016 |
| University -35- G-10-170843 | Slant Operating, LLC only | Block 31 (Queen) | Crane | 1 | 2.39K | 183K | Oct 1998 – Jan 2022 |
| Pepper Gas Unit 1 G-6-222633 | Fortune Resources LLC only | Blocker (Cotton Valley) | Harrison | 1 | 2.39K | 353K | Oct 2006 – Mar 2026 |
| Anderson G-6-224719 | Sabine Oil & Gas Corporation only | Blocker (Cotton Valley) | Harrison | 1 | 2.38K | 568K | Dec 2006 – Jan 2021 |
| Shovlin Vehle/Moore "A" G-4-225681 | Block "T" Petroleum, Inc. only | Las Hermanitas (House Sand) | Duval | 1 | 2.37K | 2.83M | Jan 2007 – Apr 2026 |
| Dorsett, W.N. Gas Unit G-6-251891 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 2.37K | 2M | May 2009 – Apr 2026 |
| State of Texas -AH- O-10-389 | Texaco E & P Inc. only | Block 7 (Devonian) | Martin | 1 | 2.36K | 19 | Jan 1993 – Jan 1995 |
| Dinkle G-6-222257 | Sabine Energy Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 2.35K | 445K | May 2006 – Apr 2026 |
| Bartlett-Bailey Gas Unit #1 G-6-213528 | Walkabout Operating, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 2.35K | 528K | Jul 2005 – Apr 2026 |
| Dorsett, W.N. Gas Unit G-6-154199 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 2.34K | 605K | Apr 1995 – Oct 2008 |
| Brune-Burnett Gas Unit "B" G-6-229403 | Sponte Operating, Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 2.33K | 357K | May 2007 – Apr 2010 |
| Brewster Gas Unit G-6-224381 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 2.33K | 769K | Oct 2006 – Apr 2026 |
| Woods "B" G-6-210894 | Brookston Energy, Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 2.33K | 534K | Mar 2005 – Mar 2026 |