| Blocker Heirs G-6-243333 | Enpower Resources Inc. only | Carthage, North (Cotton Valley) | Harrison | 1 | 1.51K | 178K | Sep 2008 – Aug 2024 |
| Block, Eric O-1-821 | Perkins, Eugene O. only | La Vernia | Guadalupe | 11 | 1.51K | 104 | Jan 1993 – May 2002 |
| State -LB- O-10-61721 | Scout Energy Management LLC only | Block 31 (Grayburg) | Crane | 1 | 1.5K | 12.5K | Jul 2024 – Apr 2026 |
| Andrews University 21 O-10-37665 | Williams, Clayton Energy, Inc. only | Block 5 (Wolfcamp) | Andrews | 1 | 1.5K | 1.48K | Nov 2005 – Feb 2008 |
| Dickard G-6-226948 | Sabine Energy Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 1.49K | 462K | Mar 2007 – Apr 2026 |
| University 8 G-9-103448 | Red Stag Operating, LLC only | Block 51 (Strawn) | Crockett | 1 | 1.47K | 916K | Jan 1993 – Apr 2026 |
| Crump O-10-20454 | Eagle Rock Operating Company,llc only | Block a-28 (Wichita-Albany) | Andrews | 1 | 1.47K | 22.8K | Jan 1993 – Mar 2000 |
| Raider Power State O-10-45794 | Vin Fisher Operating, Inc. only | Block a-34, Northwest (Glorieta) | Andrews | 1 | 1.46K | 0 | Nov 2014 – Jun 2015 |
| Fasken Block "BA" G-10-144926 | Endeavor Energy Resources L.P. only | Lowe (Atoka) | Andrews | 1 | 1.44K | 329K | Mar 1993 – Mar 2024 |
| Brown "A" O-9-15918 | Henry Petroleum LP only | Block 4 (Penn) | Upton | 1 | 1.44K | 3.56K | Mar 2006 – Aug 2006 |
| Young, Delcia M. -B- G-6-100029 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 1.43K | 276K | Jan 1993 – Apr 2026 |
| Block 31 Unit G-10-167583 | OXY USA Inc. only | Block 31 (Queen) | Crane | 1 | 1.42K | 209K | Feb 1998 – Sep 2018 |
| University 9-18 "B" G-10-165710 | Texaco E & P Inc. only | Block 18 (Cherry Canyon) | Ward | 1 | 1.42K | 149K | Sep 1997 – Dec 1998 |
| University 6-24 O-10-32424 | Westland Oil Development Corp. only | Block 6 (Strawn) | Andrews | 1 | 1.42K | 1.95K | Jan 1993 – Jan 1996 |
| Texu "Q" O-10-34797 | Mewbourne Oil Company only | Block 12 | Andrews | 1 | 1.41K | 516 | Aug 1995 – Mar 1996 |
| University "X" O-10-34994 | WTG Exploration only | Block 12 (Wolfcamp) | Andrews | 1 | 1.41K | 475 | Jul 1996 – Dec 1996 |
| University 9-5 A O-10-36637 | Thompson, J. Cleo only | University Block 9 (Penn.) | Andrews | 2 | 1.4K | 512 | May 2001 – Jun 2001 |
| Woods "B" G-6-227084 | Brookston Energy, Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 1.39K | 344K | Sep 2006 – Aug 2025 |
| Block 31 Unit G-10-279854 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 1.39K | 427K | Aug 2015 – Apr 2026 |
| George Gas Unit "A" G-6-82744 | BP America Production Company only | Blocker (Cotton Valley) | Harrison | 1 | 1.37K | 387K | Jan 1993 – Feb 2004 |
| Maia O-10-51793 | Ring Energy, Inc. only | Block a-34 (San Andres) | Gaines | 1 | 1.36K | 4.71K | Apr 2018 – Sep 2018 |
| -32- Hall G-10-51883 | Abraxas Petroleum Corporation only | Block 16 (Devonian) | Ward | 1 | 1.36K | 234K | Jan 1993 – Nov 2005 |
| Blocker Heirs G-6-218361 | Enpower Resources Inc. only | Carthage, North (Cotton Valley) | Harrison | 1 | 1.36K | 226K | Nov 2005 – Aug 2015 |
| Block, E. Heirs "B" O-4-14238 | Osborn,w.b. Oil & Gas Operations only | Sun, West (8800) | Starr | 1 | 1.35K | 0 | May 2022 – Apr 2026 |
| Wernecke, Ernest D. East G-4-178013 | Block "T" Petroleum, Inc. only | Rosita, W. (Wilcox) | Duval | 1 | 1.35K | 445K | Jun 2000 – Apr 2026 |
| Blalock Gas Unit 2 G-6-95670 | TGNR East Texas II LLC only | Blocker (Cotton Valley) | Harrison | 1 | 1.35K | 642K | Jan 1993 – May 2015 |
| Washington,e.w. Heirs Gas Unit 1 G-6-227307 | TGNR East Texas II LLC only | Blocker (Cotton Valley) | Harrison | 1 | 1.34K | 485K | Mar 2007 – Apr 2026 |
| Daniels "a" Gas Unit G-6-216094 | TGNR East Texas II LLC only | Blocker (Cotton Valley) | Harrison | 1 | 1.33K | 875K | Sep 2005 – Apr 2022 |
| Bruce, Frank G-6-257148 | Harleton Oil & Gas Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 1.33K | 470K | Apr 2010 – Apr 2026 |
| Clark, Winston et Al G-6-109591 | Craton Operating LLC only | Blocker (Cotton Valley) | Harrison | 1 | 1.31K | 307K | Jan 1993 – Apr 2026 |
| Block 75 Unit G-2-263461 | Hedrick Production Inc. only | Clayton (Wilcox 7360) | Live Oak | 1 | 1.31K | 108K | Nov 2010 – Jun 2015 |
| State Lease 59455 G-3-47266 | Jefferson Block 24 Oil & Gas LLC only | High Is. Blk. 24L (FB-C, HC) | High IS-LB | 1 | 1.3K | 2.06M | Jan 1993 – Dec 2003 |
| Harrison, B. S. G-6-99793 | Comstock Oil & Gas, LP only | Blocker (Cotton Valley) | Harrison | 1 | 1.29K | 392K | Jan 1993 – Sep 2005 |
| State Lease 103389 G-3-244795 | Jefferson Block 24 Oil & Gas LLC only | High Is. Blk. 24-L (HF Sand) | High IS-LB | 1 | 1.28K | 382K | Sep 2008 – Jun 2009 |
| Blalock Gas Unit 2 G-6-225255 | TGNR East Texas II LLC only | Blocker (Cotton Valley) | Harrison | 1 | 1.28K | 441K | Feb 2007 – Nov 2017 |
| 440-L Unit G-3-150318 | Capco Offshore of Texas, Inc. only | Brazos Block 440 (-C- Sd.) | Brazos-LB | 1 | 1.28K | 7.47M | Jul 1994 – May 2009 |
| Doyle Harris Gas Unit G-6-280151 | Diversified Production LLC only | Blocker (Travis Peak) | Harrison | 1 | 1.25K | 418K | Nov 2015 – Apr 2026 |
| L. C. Weatherby Gas Unit G-4-136273 | Block "T" Petroleum, Inc. only | Rosita, NW (Wilcox Cons.) | Duval | 1 | 1.25K | 6.58M | Jan 1993 – Apr 2026 |
| Whittaker G-6-197543 | Sabine Energy Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 1.25K | 316K | Jul 2003 – Jun 2024 |
| University Block 42 G-9-225740 | EOG Resources, Inc. only | Redemption (Ellenburger) | Crockett | 1 | 1.25K | 18.3K | Feb 2007 – Feb 2011 |
| Cooper 49 G-10-192722 | XTO Energy Inc. only | Block 16 (Devonian) | Ward | 1 | 1.24K | 1.13M | Feb 2002 – Apr 2026 |
| HI 22-L (TX S/L M-95936) G-3-159630 | Global Natural Resources Corp. only | Block 23-L (10,240) | High IS-LB | 1 | 1.24K | 84.1K | Jun 1996 – Aug 1996 |
| University 44 O-10-48364 | Formentera Operations LLC only | Block 31 (Devonian) | Crane | 1 | 1.21K | 566 | Oct 2014 – Aug 2015 |
| Herring Ranch Block 55 G-2-135709 | Mooringsport Energy Prod. Co. only | Clayton (Wilcox 7370-Herring SD) | Live Oak | 1 | 1.21K | 46.6K | Jan 1993 – May 1994 |
| J. F. Hathaway O-10-43023 | Crescent Energy Operating, LLC only | Estes Block 34 (Wich.-Alb., L.) | Ward | 1 | 1.19K | 0 | Oct 2011 – Mar 2015 |
| Keys, Warren G-6-155214 | Petrogas Energy Services, LLC only | Blocker (Travis Peak) | Harrison | 1 | 1.19K | 237K | May 1995 – Dec 2001 |
| Block 31 Unit G-10-168911 | OXY USA EOR, LLC only | Block 31 (Queen) | Crane | 1 | 1.19K | 198K | Apr 1998 – May 2016 |
| State Tract 336-L G-3-133123 | Fairways Spec. Sales & Serv Inc only | Brazos Block 336-L (R-43) | Brazos-LB | 1 | 1.15K | 2.5M | Jan 1993 – Apr 2003 |
| State Tract 336-L SE/4 G-3-132512 | Fairways Spec. Sales & Serv Inc only | Brazos Block 336-L (C-54) | Brazos-LB | 1 | 1.14K | 3.84M | Jan 1993 – Apr 2003 |
| McElroy Ranch Co. "F" G-9-143614 | FDL Operating, LLC only | Block 42 (Penn) | Upton | 1 | 1.14K | 80.3K | Jan 1993 – Mar 2013 |