| University "25-A" O-10-35085 | Arco Permian only | Block 31, East (Atoka) | Crane | 1 | 818 | 24.5K | Aug 1996 – Nov 1997 |
| Barbara O-10-44824 | Parallel Petroleum LLC only | Block a-34 (San Andres) | Andrews | 1 | 798 | 0 | Jan 2014 – May 2022 |
| University "11" G-9-118134 | Red Stag Operating, LLC only | Block 51 (Strawn) | Crockett | 1 | 797 | 354K | Jan 1993 – Apr 2026 |
| Fasken BLK -EE- NE/NW O-10-30340 | Energen Resources Corporation only | Block 2 (Grayburg) | Andrews | 1 | 786 | 21 | Jan 1993 – Feb 1995 |
| University "37A" G-10-169037 | Formentera Operations LLC only | Block 31 (Queen) | Crane | 1 | 782 | 107K | May 1998 – Apr 2026 |
| Block 31 Unit G-10-165332 | Hilcorp Energy Company only | Block 31 (Queen) | Crane | 1 | 776 | 196K | Oct 1997 – Apr 2026 |
| Becker, Jossie Taylor G-6-98312 | Brammer Engineering, Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 775 | 108K | Jan 1993 – Mar 1996 |
| High Island 24L SL 59456 G-3-165605 | Jefferson Block 24 Oil & Gas LLC only | High IS BLK.24L(FB-E,gp) | High IS-LB | 1 | 772 | 370K | Nov 1997 – Dec 1998 |
| Shovlin Vehle G-4-234013 | Block "T" Petroleum, Inc. only | Las Hermanitas (House Sand) | Duval | 1 | 771 | 2.12M | Oct 2007 – Apr 2026 |
| Block 31 Unit G-10-287217 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 766 | 327K | Mar 2019 – Apr 2026 |
| Jenkins 'A' G-6-280202 | Diversified Production LLC only | Blocker (Page) | Harrison | 1 | 751 | 131K | Jun 2015 – Aug 2023 |
| Harris, James Gas Unit G-6-202063 | Valence Operating Company only | Blocker (Cotton Valley) | Harrison | 1 | 740 | 1.01M | Mar 2004 – Apr 2026 |
| Block 31 Unit G-10-173575 | Hilcorp Energy Company only | Block 31 (Queen) | Crane | 1 | 738 | 169K | Mar 1999 – Apr 2026 |
| Blocker, W. O. G-13-129430 | DWP Oil & Gas only | Morris (Consolidated Congl.) | Wise | 1 | 737 | 196K | Jan 1993 – Apr 2026 |
| Williams Gas Unit G-6-231277 | Soldier Creek Energy, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 723 | 110K | Jan 2007 – Nov 2023 |
| Weatherby, L.C. Gas Unit G-4-129882 | Block "T" Petroleum, Inc. only | Rosita, NW (Wilcox Cons.) | Duval | 1 | 715 | 3.09M | Jan 1993 – Apr 2026 |
| Pepper Gas Unit 1 G-6-118214 | Fortune Resources LLC only | Blocker (Cotton Valley) | Harrison | 1 | 707 | 411K | Jan 1993 – Mar 2026 |
| Block 75 Unit G-2-175664 | Sage Energy Company only | Clayton (Block 85 SD) | Live Oak | 1 | 689 | 42.6K | Nov 1999 – Jan 2001 |
| Block 31 Unit G-10-175868 | Hilcorp Energy Company only | Block 31 (Queen) | Crane | 1 | 673 | 200K | Apr 2016 – Apr 2026 |
| State O-9-7301 | Sterlynn Oil & Gas, Inc. only | Block 47 (Shallow) | Crockett | 2 | 653 | 31 | Jan 1993 – Sep 2000 |
| Baldwin Heirs G-6-170836 | Enpower Resources Inc. only | Blocker (Travis Peak) | Harrison | 1 | 652 | 354K | Jun 1998 – Nov 2018 |
| University "11" O-10-34180 | Phillips Petroleum Company only | Block 11 (Wichita, LO) | Andrews | 1 | 644 | 1.07K | May 1994 – Oct 1994 |
| Block-Guerra G-4-127383 | Caribbean Energy LLC II only | Arroyo Los Olmos (Yegua 25) | Starr | 1 | 640 | 646K | Jan 1993 – Mar 2026 |
| Crews & Mast G-10-68152 | Bald Eagle Operating Inc. only | Block a-34 (Yates) | Andrews | 1 | 623 | 51.8K | Jul 1997 – Oct 2022 |
| Pyote Gas Unit #5 G-10-69783 | Abraxas Petroleum Corporation only | Block 16 (Devonian) | Ward | 1 | 620 | 1.88M | Jan 1993 – May 2019 |
| JV-S 7211 Block 16 G-10-184055 | Abraxas Petroleum Corporation only | Block 16, SW. (Permo-Penn) | Ward | 1 | 620 | 671 | Apr 2001 – Sep 2001 |
| Block 31 Unit G-10-295629 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 615 | 78.8K | Jun 2023 – Jan 2026 |
| Sog Cowden O-10-47061 | CLR Secondary Recovery, LLC only | Block 31 (Atoka 7600) | Crane | 1 | 603 | 0 | May 2014 – Aug 2014 |
| Block, E. Heirs "B" G-4-88284 | Exxon Corp. only | Sun, West (8800) | Starr | 1 | 600 | 12K | Jan 1993 – Jun 1993 |
| Harris G-6-243455 | Harleton Oil & Gas Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 596 | 468K | Oct 2008 – Mar 2022 |
| Blocker, W. O. G-13-187399 | DWP Oil & Gas only | Morris (Consolidated Congl.) | Wise | 1 | 595 | 123K | Sep 2001 – Apr 2026 |
| State Lease 59454 G-3-141065 | Jefferson Block 24 Oil & Gas LLC only | High Is. Blk. 24L (FB-DD, HF) | High IS-LB | 1 | 591 | 85.1K | Jan 1993 – May 1993 |
| McElroy Ranch Co. -F- G-9-143736 | Pennzoil Petroleum Company only | Block 42 (Penn) | Upton | 1 | 581 | 13.1K | Feb 1993 – Jun 1993 |
| Anderson G-6-238159 | Sabine Energy Inc. only | Blocker (Cotton Valley) | Harrison | 1 | 580 | 159K | Jun 2008 – Apr 2026 |
| University Block 14 Cons O-10-41518 | Ring Energy, Inc. only | Shafter Lake (Yates) | Andrews | 1 | 576 | 318 | Dec 2011 – Jan 2017 |
| Block 31 Unit G-10-295710 | Hilcorp Energy Company only | Block 31 (Devonian) | Crane | 1 | 575 | 172K | May 2023 – Apr 2026 |
| McQuatters, Eugenia O-10-64604 | Ring Energy, Inc. only | Block a-34 (San Andres) | Andrews | 6 | 573 | 0 | Jan 2026 – Apr 2026 |
| Neptune O-10-49733 | Ring Energy, Inc. only | Block a-34 (San Andres) | Andrews | 1 | 565 | 0 | Nov 2017 – Mar 2018 |
| Block 31 Unit G-10-279800 | OXY USA Inc. only | Block 31 (Devonian) | Crane | 1 | 558 | 354K | Aug 2015 – Feb 2023 |
| McElroy Ranch Co. "F" G-9-143615 | FDL Operating, LLC only | Block 42 (Penn) | Upton | 1 | 557 | 74.3K | Jan 1993 – Nov 2010 |
| Block 31 Unit G-10-164179 | Hilcorp Energy Company only | Block 31 (Queen) | Crane | 1 | 554 | 156K | Oct 1997 – May 2010 |
| Glasscock "S" Fee G-10-218115 | Burk Royalty Co., Ltd. only | Block 32 (Wolfcamp) | Glasscock | 1 | 553 | 95.5K | Jul 2006 – Apr 2026 |
| State Tract 335-L SW/4 G-3-132553 | Fairways Spec. Sales & Serv Inc only | Brazos Block 336-L (R-43) | Brazos-LB | 1 | 550 | 2.17M | Jan 1993 – Apr 2003 |
| Block 31 Unit G-10-165871 | Hilcorp Energy Company only | Block 31 (Queen) | Crane | 1 | 534 | 181K | Oct 1997 – Apr 2026 |
| Quarter 3 O-10-47191 | Crownquest Operating, LLC only | Block a-34 (San Andres) | Andrews | 1 | 524 | 523 | Aug 2015 – Apr 2016 |
| Greene, O. W. G-4-237120 | Block "T" Petroleum, Inc. only | Rosita, NW (Wilcox Cons.) | Duval | 1 | 518 | 518K | Apr 2008 – Apr 2026 |
| Block 31 Unit G-10-163950 | Hilcorp Energy Company only | Block 31 (Queen) | Crane | 1 | 512 | 290K | Oct 1997 – Apr 2026 |
| Brazos Block 478-L G-3-179676 | Capco Offshore of Texas, Inc. only | Brazos Block 440 (-C- Sd.) | Brazos-LB | 1 | 509 | 3.09M | Sep 2000 – Oct 2004 |
| Block O-14-113 | Roxi Production only | Panhandle Carson County Field | Carson | 1 | 500 | 690 | Jan 1993 – Oct 1996 |
| Block Estate O-13-19196 | Benco only | Archer County Regular | Archer | 4 | 486 | 28 | Jul 1993 – Apr 1997 |