| Crump, W. E. G-10-43136 | Q Natural Resources, LLC only | Miller Block B-29 (Penn.) | Ward | 1 | 110 | 404K | Jan 1993 – Sep 2023 |
| Brown, J. O. Trust G-6-257693 | Chalker Operating Inc. only | Blocker (Page) | Harrison | 1 | 105 | 4.28K | Apr 2010 – Nov 2010 |
| Smith, F. G. -A- G-10-44875 | Crescent Energy Operating, LLC only | Miller Block B-29 (Penn.) | Ward | 1 | 103 | 127K | Jan 1993 – Mar 2008 |
| Texu -Q- G-10-127485 | Mewbourne Oil Company only | Block 12 (Devonian) | Andrews | 1 | 102 | 0 | Oct 1993 – Oct 1993 |
| Blalock "A" G-6-234310 | Sabine Oil & Gas Corporation only | Blocker (Cotton Valley) | Harrison | 1 | 101 | 23.2K | Mar 2007 – Oct 2019 |
| Wilber, B. E. G-3-229929 | Goldston Oil Corporation only | Devil (Fault Block C) | Jefferson | 1 | 100 | 113K | Jul 2007 – Jul 2010 |
| Shovlin Vehle G-4-270623 | Block "T" Petroleum, Inc. only | Las Hermanitas (Wilcox Cons.) | Duval | 1 | 96 | 9.25K | Sep 2013 – Jul 2021 |
| 8411 JV-P Block -5- G-10-299752 | Libertad Operating LLC only | Spraberry (Trend Area) | Andrews | 1 | 93 | 1.97K | May 2025 – Mar 2026 |
| Waddell TR A G-10-35665 | Blackbeard Operating, LLC only | Block 27 (McKee) | Crane | 1 | 93 | 777K | Jan 1993 – Nov 2025 |
| Blocker Ranch #2 G-4-69971 | Lewis Petro Properties, Inc. only | Gold River, North (Olmos) | Webb | 1 | 91 | 234K | Jan 1993 – Dec 2016 |
| Anderson G-6-120484 | Buffco Production Inc. only | Blocker (Travis Peak) | Harrison | 1 | 87 | 39.6K | Jun 1994 – Jan 1996 |
| University 12-F G-10-91714 | Contango Resources, LLC only | Block 12 (Yates) | Andrews | 1 | 84 | 23.6K | Aug 1994 – Apr 2012 |
| Blocker Heirs G-6-259603 | Comstock Oil & Gas, LLC only | Carthage (Haynesville Shale) | Harrison | 1 | 78 | 2.28M | Jun 2010 – Apr 2026 |
| University 12-F G-10-85816 | Crescent Energy Operating, LLC only | Block 12 (Yates) | Andrews | 1 | 75 | 11.1K | Sep 2001 – May 2011 |
| State Tract 368-L G-3-194254 | El Paso Production Oil & Gas Co. only | Block 368-L (5300 Sand) | Brazos-LB | 1 | 74 | 142K | Sep 2003 – Apr 2004 |
| Miller, Jane Dean et Al G-10-54790 | Two P Partners, LLC only | Miller Block B-29 (Penn.) | Ward | 1 | 71 | 222K | Jan 1993 – Apr 2026 |
| Cooper 49 G-10-57037 | Arco Permian only | Block 16 (Devonian) | Ward | 1 | 70 | 29.6K | Jan 1993 – Nov 1994 |
| Blocker Heirs G-6-253054 | Comstock Oil & Gas, LLC only | Carthage (Haynesville Shale) | Harrison | 1 | 70 | 2.57M | Jun 2009 – Apr 2026 |
| Blocker Heirs G-6-261481 | Comstock Oil & Gas, LLC only | Carthage (Haynesville Shale) | Harrison | 1 | 68 | 2.55M | Oct 2010 – Apr 2026 |
| Shovlin-Vehle G-4-233106 | Block "T" Petroleum, Inc. only | Las Hermanitas (House Sand) | Duval | 1 | 68 | 4.51M | Jul 2007 – Apr 2026 |
| East Side Block Unit G-4-67504 | Royal Production Company, Inc. only | Agua Dulce (Consolidated Frio) | Nueces | 1 | 68 | 13.2K | Jan 1993 – Apr 1994 |
| Waddell TR A G-10-35607 | Blackbeard Operating, LLC only | Block 27 (McKee) | Crane | 1 | 67 | 367K | Jan 1993 – Apr 2023 |
| State Tract 629-L SW/4 G-2-106159 | White Marlin Operating Co, LLC only | Matagorda Block 629 (4300) | Matgrda IS-LB | 1 | 64 | 350K | Jan 1993 – Sep 2025 |
| Miller, Jane Dean et Al G-10-53342 | Devon Louisiana Corporation only | Miller Block B-29 (Penn.) | Ward | 1 | 64 | 9.22K | Jan 1993 – Oct 1996 |
| Blalock "A" G-6-242952 | Sabine Energy Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 61 | 30K | Jun 2008 – Oct 2008 |
| Blocker Ranch-State A G-4-210375 | Vaquero Operating only | Gold River, North (Olmos) | Webb | 1 | 58 | 263K | Apr 2005 – Mar 2023 |
| McElroy Ranch Co. "F" G-9-158707 | FDL Operating, LLC only | Block 42 (Penn) | Upton | 1 | 52 | 83.4K | Mar 1996 – Nov 2010 |
| Hazel R. Byrne Gas Unit 2 G-6-280142 | Diversified Production LLC only | Blocker (Travis Peak) | Harrison | 1 | 52 | 139K | Aug 2015 – Sep 2025 |
| Miller, Jane Dean, et Al G-10-61146 | Two P Partners, LLC only | Miller Block B-29 (Penn.) | Ward | 1 | 52 | 84.7K | Jan 1993 – Apr 2026 |
| Taylor "B" Gas Unit G-6-83981 | Amoco Production Company only | Blocker (Cotton Valley) | Harrison | 1 | 51 | 16.5K | Jan 1993 – Aug 1994 |
| University C G-9-289747 | Petx Operating LLC only | Block 38 (Canyon Sd.) | Crockett | 1 | 50 | 12.9K | Jul 2020 – Sep 2025 |
| State University -AA- O-10-15889 | XTO Energy Inc. only | Block 9 (Devonian) | Andrews | 1 | 50 | 103 | Jan 1993 – Oct 1996 |
| University 6 O-9-15435 | Roca Operating, Inc. only | Block 38 (Ellenburger) | Crockett | 1 | 49 | 800 | Jul 2003 – Sep 2003 |
| McElroy Ranch Co. -F- G-9-143737 | Pennzoil Petroleum Company only | Block 42 (Penn) | Upton | 1 | 47 | 36.3K | Jan 1993 – Jun 1993 |
| Briscoe Tract 32 Block 3 G-4-87290 | Vaquero Operating only | Gold River, North (Olmos) | Webb | 1 | 46 | 147K | Jan 1993 – Sep 2019 |
| State Tract 369-L NE/4 G-3-237713 | Chroma Operating, Inc. only | Block 368-L (5300 Sand) | Brazos-LB | 1 | 44 | 118K | Sep 2007 – Jan 2008 |
| Kennedy G-6-232441 | Brookston Energy, Inc. only | Blocker (Page) | Harrison | 1 | 43 | 95.9K | Jan 2007 – Apr 2017 |
| Block 85 Unit G-2-173077 | Calpine Natural Gas Company only | Clayton (Block 85 SD) | Live Oak | 1 | 42 | 2.45K | Aug 1998 – May 1999 |
| Block 86 Unit G-2-180871 | Calpine Natural Gas Company only | Clayton (Block 85 SD) | Live Oak | 1 | 41 | 4.13K | Feb 1999 – Apr 1999 |
| University Lands 1 G-9-262538 | WTG Exploration only | University Block 32 (Woodford) | Terrell | 1 | 39 | 19.2K | Apr 2013 – Mar 2020 |
| Block 31 Unit G-10-163611 | Hilcorp Energy Company only | Block 31 (Queen) | Crane | 1 | 38 | 355K | Jun 1997 – Apr 2026 |
| Mustang Island Block 883-S G-4-269413 | Fieldwood Energy LLC only | Wildcat | Mustang IS-SB | 1 | 38 | 4.94K | Aug 2011 – Aug 2011 |
| Blocker Ranch-State B G-4-215035 | Vaquero Operating only | Gold River, North (Olmos) | Webb | 1 | 37 | 102K | Sep 2005 – Sep 2022 |
| Miller, Jane Dean Etal G-10-44156 | Devon Louisiana Corporation only | Miller Block B-29 (Penn.) | Ward | 1 | 36 | 74.5K | Jan 1993 – Sep 1995 |
| Adams, J. T. G-3-91500 | Block T Operating, LLC only | Adams Ranch (Nodosaria 1-Str.) | Jasper | 1 | 36 | 21K | Dec 1999 – Dec 2001 |
| Weatherby-Weatherby GU G-4-180574 | Block "T" Petroleum, Inc. only | Rosita, NW (Wilcox Cons.) | Duval | 1 | 36 | 6.78M | Dec 2000 – Oct 2012 |
| Boggan, Wayne O-11-60308 | BC Operating, Inc. only | Block 35 (Dean Sd.) | Dawson | 1 | 36 | 42 | Jan 1993 – Jun 1993 |
| Block 31 Unit G-10-168264 | Hilcorp Energy Company only | Block 31 (Queen) | Crane | 1 | 35 | 273K | Apr 1998 – Apr 2026 |
| Furrh Gas Unit G-6-101570 | Fortune Resources LLC only | Blocker (Cotton Valley) | Harrison | 1 | 33 | 249K | Jan 1993 – Mar 2026 |
| Block 31 Unit G-10-163949 | Hilcorp Energy Company only | Block 31 (Queen) | Crane | 1 | 32 | 1.3M | Jul 1997 – Apr 2026 |