| VLT Thor State Unit O-10-57852 | Chevron U. S. A. Inc. only | Spraberry (Trend Area) | Howard | 8 | 2.56M | 4.59M | Oct 2022 – Apr 2026 |
| VLT Falcon Jayjohnson State Unit O-10-59040 | Chevron U. S. A. Inc. only | Spraberry (Trend Area) | Howard | 6 | 2.11M | 2.9M | Apr 2023 – Apr 2026 |
| Guitar Estate -B- O-10-31757 | Americo Energy Resources, LLC only | Zebulon | Howard | 4 | 944K | 60.9K | by Jan 1993 – Apr 2026 |
| Garrett, Horace Estate et al -A- O-10-32409 | Partee Drilling Inc. only | Howard-Glasscock (Wolfcamp 7400) | Howard | 12 | 717K | 2.39M | by Jan 1993 – Feb 2026 |
| Dodge Estate O-10-2913 | Basa Resources, Inc. only | Iatan, East Howard | Howard | 35 | 503K | 80.2K | by Jan 1993 – Apr 2026 |
| Tate -D- O-10-31348 | Mule Kick Operating LLC only | Luther, SE. (Silurian-Devonian) | Howard | 3 | 375K | 262K | by Jan 1993 – Jun 2023 |
| Garrett, Horace Estate et Al O-10-32247 | Partee Drilling Inc. only | Howard-Glasscock (Wolfcamp 7400) | Howard | 4 | 198K | 1.33M | by Jan 1993 – Sep 2018 |
| Chalk Estate O-10-19030 | Conocophillips Company only | Howard-Glasscock (Glorieta) | Howard | 9 | 153K | 17.2K | by Jan 1993 – Nov 2011 |
| Chalk Estate O-10-41224 | Citation Oil & Gas Corp. only | Howard Glasscock (Consolidated) | Howard | 15 | 115K | 59.5K | Dec 2011 – Apr 2026 |
| Guitar Trust Estate -D- O-10-8858 | Americo Energy Resources, LLC only | Varel (San Andres) | Howard | 16 | 112K | 32 | by Jan 1993 – Apr 2026 |
| State Wilkinson 30 O-10-46525 | Oxyrock Operating, LLC only | Spraberry (Trend Area) | Howard | 2 | 82.4K | 200K | Mar 2015 – Apr 2026 |
| Jones Estate "14A" O-10-41189 | Diamondback E&P LLC only | Spraberry (Trend Area) | Howard | 1 | 72.9K | 293K | Mar 2011 – Sep 2021 |
| Chalk Estate O-10-2761 | Conocophillips Company only | Howard Glasscock | Howard | 12 | 71.4K | 11K | by Jan 1993 – Nov 2011 |
| Guitar Trust Estate -A- O-10-8569 | Americo Energy Resources, LLC only | Varel (San Andres) | Howard | 2 | 59.3K | 37 | by Jan 1993 – Sep 2019 |
| Guitar Estate O-10-30097 | Diamondback E&P LLC only | Moore | Howard | 5 | 57.9K | 177 | by Jan 1993 – Apr 2026 |
| Buz State 24 O-10-47540 | Oxyrock Operating, LLC only | Spraberry (Trend Area) | Howard | 1 | 53.1K | 134K | Jan 2016 – Apr 2026 |
| Jones Estate "14" O-10-41201 | Diamondback E&P LLC only | Spraberry (Trend Area) | Howard | 1 | 51.4K | 98.2K | Feb 2011 – Apr 2026 |
| Guitar Trust Estate O-10-4471 | Hall Oil and Gas LLC only | Moore | Howard | 13 | 47K | 183 | by Jan 1993 – Apr 2026 |
| Guitar Trust Estate -A- O-10-8765 | P4 Operating, LLC only | Varel (San Andres) | Howard | 1 | 40K | 142 | by Jan 1993 – Apr 2026 |
| Jones Estate '18' O-10-42659 | Diamondback E&P LLC only | Spraberry (Trend Area) | Howard | 1 | 34.8K | 86.8K | Sep 2011 – Aug 2019 |
| Guitar Trust Estate -F- O-10-8466 | Americo Energy Resources, LLC only | Varel (San Andres) | Howard | 7 | 33.8K | 31 | by Jan 1993 – Apr 2026 |
| Guitar Trust Estate -C- O-10-8802 | Americo Energy Resources, LLC only | Varel (San Andres) | Howard | 6 | 31.9K | 25 | by Jan 1993 – Apr 2026 |
| Frazier, Nell Estate -C- O-10-28242 | Johnson Operating Company, LLC. only | Moore | Howard | 8 | 22.6K | 20 | by Jan 1993 – May 2021 |
| Frazier, Nell Estate O-10-26414 | Johnson Operating Company, LLC. only | Moore | Howard | 12 | 19.8K | 20 | by Jan 1993 – Dec 2020 |
| Frazier, Nell Estate -B- O-10-27616 | Johnson Operating Company, LLC. only | Moore | Howard | 4 | 17.1K | 23 | by Jan 1993 – Dec 2020 |
| Miller Estate Unit O-10-21252 | Crescent Energy Operating, LLC only | Hutto, South (Wolfcamp) | Howard | 1 | 16.3K | 177K | by Jan 1993 – Apr 2026 |
| Tate D O-10-50421 | Mule Kick Operating LLC only | Spraberry (Trend Area) | Howard | 1 | 14.1K | 204K | Jun 2017 – Oct 2020 |
| Horace Garrett Estate et al 'A' O-10-59997 | Partee Drilling Inc. only | Moore (Miss) | Howard | 3 | 13.4K | 42.7K | Aug 2023 – Feb 2026 |
| Guitar Trust Estate O-10-38418 | Free Rein Operating LLC only | Moore | Howard | 2 | 13.3K | 0 | Sep 2007 – Apr 2026 |
| Chalk Estate G-10-153661 | Citation Oil & Gas Corp. only | Howard-Glasscock (Wolfcamp 7400) | Howard | 1 | 11.8K | 328K | Jan 1995 – Apr 2026 |
| Horace Garrett Estate et Al O-10-51928 | Partee Drilling Inc. only | Spraberry (Trend Area) | Howard | 4 | 10.8K | 92.6K | Mar 2019 – Jun 2025 |
| Guitar Trust Estate O-10-8660 | P4 Operating, LLC only | Varel (San Andres) | Howard | 1 | 10K | 226 | by Jan 1993 – Mar 2013 |
| Carpenter Estate O-10-25991 | Emerald Production Corp. only | Sara-Mag (Canyon Lower) | Howard | 2 | 9.08K | 24K | by Jan 1993 – Apr 1995 |
| Guitar Trust Estate -A- O-10-30528 | Sola Operating, LLC only | Varel (San Andres) | Howard | 1 | 4.15K | 17 | by Jan 1993 – Dec 2019 |
| Guitar Trust Estate O-10-29978 | Americo Energy Resources, LLC only | Chaney (Clearfork) | Howard | 1 | 2.73K | 44 | by Jan 1993 – Oct 2002 |
| Walker, J.E. Estate -B- O-10-26771 | High Desert Resources, L.L.C. only | Moore | Howard | 2 | 2.3K | 20 | by Jan 1993 – Jan 2006 |
| Frazier, Nell Estate -A- O-10-27461 | Johnson Operating Company, LLC. only | Moore | Howard | 1 | 1.83K | 0 | Apr 1998 – Dec 2020 |
| Davis, Emma F. Estate "A" O-10-36357 | Basic Energy Services, L.P. only | Coahoma, N. (Fussel) | Howard | 1 | 1.72K | 12.4K | Apr 2000 – Mar 2004 |
| Walker, J. E. Estate O-10-27973 | Richman Petroleum Corp. only | Moore | Howard | 1 | 1.62K | 20 | by Jan 1993 – May 1999 |
| Davis, Emma F. Estate -A- O-10-26064 | Famcor Oil, Inc. only | Coahoma, N. (Fussel) | Howard | 1 | 1.54K | 248K | by Jan 1993 – Feb 1999 |
| Case-Rakow State 68 G-10-169194 | Lateral Oil and Gas, LLC only | Signal Peak (Wolfcamp) | Howard | 1 | 1.32K | 41.7K | Feb 1998 – Nov 2015 |
| Horace Garrett Estate et Al O-10-49575 | Partee Drilling Inc. only | Moore (Miss) | Howard | 1 | 1.29K | 5.91K | Dec 2017 – Feb 2019 |
| Davis, Emma F. Estate "A" G-10-172409 | Aroc (Texas) Inc. only | Coahoma, N. (Fussel) | Howard | 1 | 1K | 27.7K | Mar 1999 – Apr 2000 |
| Chalk Estate O-10-22542 | Citation Oil & Gas Corp. only | Howard-Glasscock (Wolfcamp 7400) | Howard | 2 | 932 | 3.41K | by Jan 1993 – Sep 1993 |
| Red Lake State O-10-34552 | Chevron Midcontinent, L.P. only | Spraberry (Trend Area) | Howard | 1 | 594 | 0 | Jul 1994 – Oct 1994 |
| Dodge, Granville M. Estate O-10-19287 | Anadarko Petroleum Corporation only | Iatan (San Andres) | Howard | 1 | 0 | 0 | — |
| Gilbert, G. Wright. Jr. Estate O-10-32046 | Select Water Solutions, LLC only | Modesta, N (Penn Reef, N) | Howard | 1 | 0 | 0 | — |
| O'Daniel, M. H. Estate O-10-26725 | Forest Oil Corporation only | Dorland (Fusselman) | Howard | 1 | 0 | 0 | — |
| Davis, Emma F Estate -A- O-10-25929 | Basa Resources, Inc. only | Coahoma (Miss) | Howard | 1 | 0 | 0 | — |
| Edwards, M. M. -GH- O-10-26968 | Dorland, D. L. Estate Of only | Dorland (Fusselman) | Howard | 3 | 0 | 0 | — |