| Venti O-10-51929 | Ring Energy, Inc. only | Block a-34 (San Andres) | Andrews | 1 | 59.3K | 33.8K | Dec 2018 – Jul 2022 |
| Umiversity Block 46 O-9-14826 | Otb Operating, LLC only | Farmer (San Andres) | Crockett | 10 | 59.2K | 42.9K | Oct 1998 – Apr 2026 |
| University "20-14" A O-10-37791 | OXY USA Inc. only | Block 21 NW (Wolfcamp) | Winkler | 1 | 58.4K | 97.7K | Oct 2005 – Feb 2017 |
| Block, B. F. O-14-82 | Large Operating LLC only | Panhandle Carson County Field | Carson | 14 | 58.4K | 230K | Jan 1993 – Apr 2026 |
| Vulcan O-10-50430 | Ring Energy, Inc. only | Block a-34 (San Andres) | Andrews | 1 | 57.9K | 22.7K | Jun 2018 – Dec 2022 |
| Furina O-10-51759 | Ring Energy, Inc. only | Block a-34 (San Andres) | Andrews | 1 | 57.7K | 80.7K | Oct 2018 – Apr 2026 |
| Watson, L. A., et Al G-10-48903 | XTO Energy Inc. only | Block 16 (Ellen.) | Ward | 1 | 57.6K | 13.3M | Jan 1993 – Mar 2026 |
| McElroy Ranch Co. "F" G-9-143739 | Diamondback E&P LLC only | Block 42 (Penn) | Upton | 1 | 57.5K | 958K | Jan 1993 – Apr 2026 |
| University "12-A" O-10-418 | WTG Exploration only | Block 12 | Andrews | 4 | 57.4K | 125K | Jan 1993 – Apr 2026 |
| University 9-18 'A' O-10-34850 | Continental Resources, Inc. only | Block 18 (Cherry Canyon) | Ward | 1 | 57.3K | 509K | Feb 1996 – Jan 2020 |
| Block 31 Unit O-10-38509 | OXY USA Inc. only | Block 31 (Atoka 7600) | Crane | 2 | 57.1K | 90.9K | Oct 2007 – Aug 2019 |
| 8411 JV-P Block -5- O-10-42593 | Libertad Operating LLC only | Spraberry (Trend Area) | Andrews | 2 | 56.8K | 246K | Sep 2011 – Mar 2026 |
| State Lease 59454 O-3-20820 | Jefferson Block 24 Oil & Gas LLC only | High Is. Blk. 24L (FB-DD, HC) | High IS-LB | 1 | 56.6K | 191K | May 1993 – Jun 2016 |
| Fred, I. O-10-18183 | Freedom Energy, Inc. only | Miller Block B-29 (Penn.) | Ward | 2 | 56.2K | 1.33M | Jan 1993 – Apr 2026 |
| Block O-13-30812 | Modern Exploration, Inc. only | Newark, East (Barnett Shale) | Cooke | 2 | 55.6K | 580K | Mar 2007 – Apr 2026 |
| University 9-AA- O-10-48656 | Citation Oil & Gas Corp. only | University Block 9 (Penn.) | Andrews | 1 | 55.3K | 47.5K | Oct 2016 – Apr 2026 |
| University "6-25-SE" O-10-24667 | Endeavor Energy Resources L.P. only | Block 6, NE. (Spraberry) | Andrews | 2 | 55.3K | 108K | Jan 1993 – Jul 2003 |
| University -X- O-10-22761 | WTG Exploration only | Block 12 | Andrews | 3 | 55.1K | 351K | Jan 1995 – Apr 2026 |
| Fortson Gas Unit G-10-58600 | XTO Energy Inc. only | Block 16 (Ellen.) | Ward | 1 | 55K | 12M | Jan 1993 – Apr 2026 |
| Lee O-9-15722 | Summit Petroleum LLC only | Block 42 (Wolfcamp) | Upton | 1 | 54.8K | 166K | Apr 2005 – Apr 2025 |
| Henderson, M. F. O-10-22310 | Walbet, Inc. only | Block 31, NW. (Penn Upper) | Crane | 1 | 54.6K | 98 | Jan 1993 – Apr 2026 |
| University 18-12A O-10-45897 | WTG Exploration only | Block 17, Southeast (Delaware) | Ward | 1 | 54.1K | 53.3K | Jan 2015 – Apr 2026 |
| Washington, Emanuel Oil Unit "A" O-6-10999 | Phillips, Jack L. Co. only | Blocker (Page) | Harrison | 1 | 54.1K | 5.97K | Jan 1993 – Mar 2026 |
| University -A- O-10-20041 | Walsh & Watts, Inc. only | Block 31 (Devonian) | Crane | 2 | 54.1K | 140K | Jan 1993 – Nov 2020 |
| University -JB- O-10-32576 | BC Operating, Inc. only | University Block 9 (Penn.) | Andrews | 3 | 54.1K | 159K | Jan 1993 – Sep 2008 |
| Athena O-10-49962 | Ring Energy, Inc. only | Block a-34 (San Andres) | Gaines | 1 | 53.9K | 19.8K | Nov 2017 – Jul 2022 |
| 9015 JV-P Block -9- O-10-33528 | BTA Oil Producers, LLC only | Block 9 (Fusselman) | Andrews | 2 | 53.9K | 96.2K | Jan 1993 – Jul 2010 |
| Neal, George #2 O-6-12679 | Enpower Resources Inc. only | Blocker (Richardson Sand) | Harrison | 1 | 53.7K | 325K | Jan 1993 – Aug 2014 |
| Ajax O-10-50418 | Ring Energy, Inc. only | Block a-34 (San Andres) | Gaines | 1 | 53.7K | 17.2K | Jan 2018 – Apr 2026 |
| State "OC" O-10-24215 | Cimarex Energy Co. of Colorado only | Block 17, Southeast (Delaware) | Ward | 3 | 52.7K | 261K | Jan 1993 – May 2016 |
| U-Tex-B- O-10-21340 | WTG Exploration only | Block 17, Southeast (Delaware) | Ward | 3 | 52.6K | 122K | Jan 1993 – Nov 2025 |
| State Tract 563-L G-2-114520 | Reunion Energy Company only | Matagorda Block 563-L (6517) | Matgrda IS-LB | 1 | 52.3K | 127K | Jan 1993 – Apr 1994 |
| University -927- O-10-30170 | Thompson, J. Cleo only | University Block 9 (Penn.) | Andrews | 1 | 52.2K | 5.99K | Jan 1993 – Jul 2014 |
| Block Z Unit O-11-68777 | Los Hijos de Sanchez J LLC only | Walker (Devonian) | Cochran | 1 | 52.1K | 78 | Apr 2005 – Aug 2025 |
| Charities O-10-49890 | Ring Energy, Inc. only | Block a-34 (San Andres) | Andrews | 1 | 51.9K | 34.9K | Oct 2017 – Apr 2026 |
| McNeill, Muriel T. O-10-23724 | Flat Top Operating, LLC only | Block a-28 (Wichita-Albany) | Gaines | 1 | 51.8K | 64.7K | Jan 1993 – Mar 2026 |
| Parker, J. E. -D- O-10-30931 | Platform Operating, LLC only | University Block 9 (Penn.) | Andrews | 2 | 50.8K | 10.9K | Jan 1993 – Apr 2026 |
| University O-10-19957 | Walsh & Watts, Inc. only | Block 31 (Devonian) | Crane | 1 | 50.7K | 418K | Jan 1993 – Apr 2026 |
| State of Texas -BB- O-10-385 | Bass Petroleum, Inc only | Block 6 (Devonian) | Andrews | 2 | 50.6K | 3.19K | Jan 1993 – Dec 2002 |
| Waddell, W.N. Tr. -4- O-10-24052 | Burlington Res O & G Co-Midland only | Block 31, NW. (Penn Upper) | Crane | 3 | 50.2K | 37.1K | Jan 1993 – Aug 2005 |
| Crews-Mast Ltd. O-10-31196 | Vin Fisher Operating, Inc. only | Block a-34, Northwest (Glorieta) | Andrews | 1 | 50.1K | 8.33K | Jan 1993 – Apr 2026 |
| High Island 24-L, N/2, NW/4 O-3-26021 | Jefferson Block 24 Oil & Gas LLC only | High Is. Blk. 24L(FB-C, CM-11) | High IS-LB | 1 | 49.5K | 65.9K | Aug 2012 – Jun 2016 |
| Roadrunner 1 O-10-39805 | Blackbeard Operating, LLC only | Block 31, NW. (Penn Upper) | Crane | 1 | 49.5K | 24.4K | Dec 2009 – Apr 2026 |
| Crump, J. L. O-10-18581 | Petex only | Block a-28 (Wichita-Albany) | Andrews | 1 | 49.4K | 70.5K | Jan 1993 – Sep 2023 |
| Cooper 49 G-10-56791 | XTO Energy Inc. only | Block 16 (Ellen.) | Ward | 1 | 49.1K | 7.24M | Jan 1993 – Nov 2010 |
| Calypso O-10-50270 | Ring Energy, Inc. only | Block a-34 (San Andres) | Andrews | 1 | 48.8K | 7.38K | Dec 2017 – Dec 2020 |
| Soft Tail G-10-175680 | McGee Drilling Corporation only | Block 17, Southeast (Delaware) | Ward | 1 | 48.7K | 919K | Nov 1999 – Jan 2025 |
| University 12-10 O-10-42644 | White Rock Oil & Gas, LLC only | Block 12 | Andrews | 1 | 48.5K | 51.4K | Mar 2012 – Apr 2026 |
| Triton O-10-50003 | Ring Energy, Inc. only | Block a-34 (San Andres) | Gaines | 1 | 48.4K | 27.4K | Dec 2017 – Oct 2021 |
| Deford-White Oil Unit O-10-45834 | Citation Oil & Gas Corp. only | Block a-34 (San Andres) | Andrews | 2 | 47.8K | 11.1K | Oct 2014 – Apr 2026 |