| High Island 24L SL59456 G-3-174791 | Jefferson Block 24 Oil & Gas LLC only | High Is. BLK 24L (FB-F, J-Ser) | High IS-LB | 1 | 1.13K | 510K | Sep 1999 – Oct 2000 |
| State Tract 774 - L SW/4 G-4-176651 | Dominion Oklahoma Texas E&P, Inc only | Block 774 (L. 11,450) | Mustang IS-LB | 1 | 1.13K | 60K | Jan 2000 – Jan 2001 |
| State Lease 81980 G-4-119168 | Texas Offshore Operations, LLC only | Block 772 (Frio, Middle C) | Mustang IS-LB | 1 | 1.13K | 7.42M | Jan 1993 – Jan 2002 |
| Blocker, Vef Unit 2 G-6-221573 | Faulconer Energy, LLC only | Hardwood (Cotton Valley) | Harrison | 1 | 1.12K | 300K | May 2006 – Mar 2023 |
| Jenkins 'a' Unit G-6-280141 | Diversified Production LLC only | Blocker (Travis Peak) | Harrison | 1 | 1.12K | 344K | Jul 2015 – Jul 2020 |
| Jax 28 O-10-48981 | Eliteenergyholdings LLC only | Block 31 (Ellenburger) | Crane | 1 | 1.12K | 0 | Apr 2017 – Oct 2019 |
| Shovlin Vehle/Moore "A" G-4-214907 | Block "T" Petroleum, Inc. only | Las Hermanitas (House Sand) | Duval | 1 | 1.09K | 2.53M | Nov 2005 – Apr 2026 |
| 7906 JV-P Henry G-10-92832 | BTA Oil Producers only | Block 16 (Devonian) | Ward | 1 | 1.09K | 3.45M | Jan 1993 – Dec 2004 |
| University -27- O-10-14046 | Cox, John L. only | Block 9 (Ellenburger) | Andrews | 1 | 1.08K | 1.54K | Jan 1993 – Oct 1993 |
| State Tract 98-L G-3-104475 | Seiran E & P Company, LLC only | Block 98-L | High IS-LB | 1 | 1.06K | 677K | Jan 1993 – Aug 1996 |
| Block 31 Unit G-10-295381 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 1.06K | 146K | May 2023 – Apr 2026 |
| East Block 31/Atoka/Unit G-10-210336 | Formentera Operations LLC only | Block 31, East (Atoka) | Crane | 1 | 1.06K | 848K | Feb 2005 – Apr 2026 |
| Blalock "A" G-6-222253 | Sabine Energy Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 1.06K | 227K | Jun 2006 – Jun 2024 |
| Haynes, R. W. Gas Unit G-6-231449 | Fortune Resources LLC only | Blocker (Cotton Valley) | Harrison | 1 | 1.05K | 172K | Feb 2007 – Mar 2026 |
| Pakenham 2 G-9-64266 | OXY USA Inc. only | University Block 34,E.(WOLFCAMP) | Terrell | 1 | 1.05K | 410K | Jan 1993 – Nov 2013 |
| Blocker, W. O. O-13-28011 | Penny, Ralph E. only | Morris (Consolidated Congl.) | Wise | 1 | 1.04K | 93.5K | Jan 1993 – Oct 2001 |
| Alldredge G-6-158994 | Howell & Sandlin, Inc. only | Blocker (Travis Peak) | Harrison | 1 | 1.03K | 222K | May 1996 – Dec 1997 |
| Wheeler G-6-114383 | Soldier Creek Energy, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 1.03K | 296K | Jan 1993 – Feb 2023 |
| University 12 G-9-219231 | EP Energy E&P Company, L.P. only | Block 39-B (Ellen) | Crockett | 1 | 1.03K | 6.5K | Mar 2006 – Dec 2008 |
| Block, Erich O-1-929 | Source Petroleum Inc. only | La Vernia | Guadalupe | 2 | 1.03K | 76 | Jan 1993 – Dec 1999 |
| Blocker Ranch-State B G-4-93604 | Vaquero Operating only | Gold River, North (Olmos) | Webb | 1 | 1.03K | 421K | Jan 1993 – Sep 2022 |
| Block 55-L SW/4 G-3-204073 | Seiran E & P Company, LLC only | High Island Blk. 55-L (DB-6) | High IS-LB | 1 | 1.01K | 480K | Jul 2004 – Jun 2008 |
| Block 31 Unit G-10-172168 | Hilcorp Energy Company only | Block 31 (Queen) | Crane | 1 | 1.01K | 90.9K | Jan 1999 – Apr 2026 |
| Mosley, Thelma Gas Unit G-6-98589 | BP America Production Company only | Blocker (Cotton Valley) | Harrison | 1 | 991 | 359K | Jan 1993 – Dec 2010 |
| Block 86 Unit G-2-195692 | Hedrick Production Inc. only | Clayton (Block 75 SD) | Live Oak | 1 | 973 | 55.4K | Dec 2001 – Mar 2003 |
| Block 31 Unit G-10-173507 | OXY USA Inc. only | Block 31 (Queen) | Crane | 1 | 972 | 155K | Mar 1999 – Feb 2023 |
| Washington, E. W. Heirs G-6-107289 | TGNR East Texas II LLC only | Blocker (Cotton Valley) | Harrison | 1 | 963 | 244K | Jan 1993 – Apr 2026 |
| Pepper Gas Unit 1 G-6-240417 | Fortune Resources LLC only | Blocker (Cotton Valley) | Harrison | 1 | 948 | 311K | Apr 2007 – Mar 2026 |
| State Tract 368-L G-3-192274 | El Paso Production Oil & Gas Co. only | Block 368-L (Miocene Stray 2) | Brazos-LB | 1 | 942 | 418K | Apr 2002 – Jan 2003 |
| Dinkle G-6-222256 | Sabine Energy Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 933 | 165K | May 2006 – Mar 2026 |
| Cook Gas Unit G-6-222805 | Fortune Resources LLC only | Blocker (Cotton Valley) | Harrison | 1 | 927 | 428K | Oct 2006 – Mar 2026 |
| University "47" G-10-169025 | Formentera Operations LLC only | Block 31 (Queen) | Crane | 1 | 922 | 61.4K | May 1998 – Feb 2017 |
| Brazos S.T. 368-L G-3-171448 | El Paso Production Oil & Gas Co. only | Block 368-L (5600) | Brazos-LB | 1 | 910 | 3.97M | Dec 1998 – Oct 2002 |
| Blocker Heirs G-6-242145 | Enpower Resources Inc. only | Carthage, North (Cotton Valley) | Harrison | 1 | 909 | 318K | Jun 2008 – Sep 2025 |
| East Block 31 Atoka Unit G-10-217487 | Formentera Operations LLC only | Block 31, East (Atoka) | Crane | 1 | 909 | 221K | Jun 2006 – Jun 2019 |
| Block 31 Unit G-10-295480 | OXY USA EOR, LLC only | Block 31 (Devonian) | Crane | 1 | 908 | 449K | May 2023 – Apr 2026 |
| Block 31 Unit G-10-282456 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 904 | 228K | May 2017 – Apr 2026 |
| Brazos Block 478L G-3-219438 | Gulf E&P Ltd only | Brazos Block 440 (-B- Sd.) | Brazos-LB | 1 | 903 | 641K | Nov 2004 – Nov 2005 |
| Block 31 Unit G-10-282506 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 890 | 879K | May 2017 – Apr 2026 |
| Hubberd-Frost Nat. Bank Gas Unit G-4-137108 | Block "T" Petroleum, Inc. only | Rosita, NW (Wilcox Cons.) | Duval | 1 | 889 | 3.29M | Jan 1993 – Apr 2026 |
| Block 70, Unit 3 G-2-141917 | Bay Rock Operating Company only | Clayton (Slick 6450) | Live Oak | 1 | 885 | 149K | Jan 1993 – Aug 1995 |
| State Tract 336-L SE/4 G-3-133576 | Fairways Spec. Sales & Serv Inc only | Brazos Block 336-L (R-43) | Brazos-LB | 1 | 883 | 1.16M | Jan 1993 – Apr 2003 |
| University O-10-35921 | Scout Energy Management LLC only | Block 31 (Queen) | Crane | 1 | 880 | 14.7K | Jun 1998 – Dec 2000 |
| East Side Block Unit G-4-107637 | Wallis Energy, Inc. only | Agua Dulce (Vicksburg Consl.) | Nueces | 1 | 877 | 167K | Jan 1993 – Apr 2026 |
| Meek-Haynes Gas Unit G-6-242396 | Diversified Production LLC only | Blocker (Page) | Harrison | 1 | 874 | 138K | Mar 2008 – Dec 2016 |
| Shaw Gas Unit G-6-215332 | Enpower Resources Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 866 | 194K | Aug 2005 – Feb 2016 |
| University 22 A O-9-18036 | Baylor Operating, LLC only | Block 4 (Wolfcamp) | Upton | 1 | 842 | 0 | Apr 2012 – Sep 2017 |
| Crews-Mast "8B" O-10-46156 | Ring Energy, Inc. only | Block a-34, Northwest (Glorieta) | Andrews | 1 | 832 | 434 | Jan 2015 – Apr 2015 |
| UL 18-19 O-10-36971 | Olsen Energy Inc. only | Block 18 (Cherry Canyon) | Ward | 1 | 821 | 9.37K | Oct 2002 – Feb 2004 |
| Block 33-3 TXL Fee O-9-18901 | Chevron U. S. A. Inc. only | Roble Grande (Strawn\woodford) | Glasscock | 1 | 819 | 1.72K | Mar 2015 – Jun 2015 |