| Noll, R. M. O-10-40344 | Apache Corporation only | Vealmoor, East (Wolfcamp) | Howard | 3 | 9.59K | 32.6K | Jul 2011 – Jun 2012 |
| Axis O-10-32749 | Lakewood Operating, Ltd. only | C. C. Gunn (Canyon Reef) | Howard | 1 | 9.59K | 21.6K | by Jan 1993 – Apr 1995 |
| Cathey 2 O-10-40683 | Apache Corporation only | Talbot (Canyon) | Howard | 1 | 9.57K | 6.12K | Nov 2010 – Aug 2011 |
| Stringfellow, R. E. Unit O-10-21241 | Collins & Ware, Inc. only | Hutto, South (Wolfcamp) | Howard | 1 | 9.52K | 78.3K | by Jan 1993 – Jan 1999 |
| Edwards, M.M. O-10-24542 | New Height Energy, LLC only | Snyder (San Andres) | Howard | 3 | 9.52K | 18 | by Jan 1993 – Sep 2018 |
| Crenshaw 28 O-10-42143 | Callon Petroleum Operating Co only | Spraberry (Trend Area) | Howard | 1 | 9.49K | 37.2K | Nov 2011 – Apr 2018 |
| Oldham Trust 27 O-10-47122 | Highpeak Energy Holdings, LLC only | Spraberry (Trend Area) | Howard | 1 | 9.48K | 15.5K | Feb 2015 – Jan 2020 |
| White 17 O-10-47748 | Highpeak Energy Holdings, LLC only | Spraberry (Trend Area) | Howard | 1 | 9.48K | 2.88K | May 2016 – Oct 2020 |
| Guitar 12 O-10-40021 | Manhattan Petroleum, Inc. only | Spraberry (Trend Area) | Howard | 2 | 9.47K | 8.29K | Dec 2009 – Feb 2014 |
| Barr O-10-33706 | IP Petroleum Company, Inc. only | C. C. Gunn (Canyon Reef) | Howard | 1 | 9.44K | 15K | Feb 1993 – Jan 1994 |
| Barnett -A- O-10-4461 | Johnson Operating Company, LLC. only | Moore | Howard | 1 | 9.44K | 200 | by Jan 1993 – Dec 2020 |
| Broughton Farms 24 O-10-42940 | Big Star Oil & Gas, LLC only | Spraberry (Trend Area) | Howard | 1 | 9.41K | 23.4K | May 2012 – Oct 2014 |
| Davis, J.W. -B- O-10-52796 | Grayrock Energy II, LLC only | Iatan (San Andres) | Howard | 1 | 9.4K | 0 | Oct 2019 – Aug 2026 |
| Battjer, Patti O-10-48131 | Wash, Robert C. Inc. only | Howard Glasscock (Consolidated) | Howard | 1 | 9.39K | 121 | Dec 2011 – May 2026 |
| Wilkinson NO.2 O-10-28064 | Bates PC, LLC only | Moore | Howard | 5 | 9.38K | 23 | by Jan 1993 – Dec 2020 |
| Ray A O-10-41347 | New Height Energy, LLC only | Spraberry (Trend Area) | Howard | 1 | 9.38K | 118K | Nov 2011 – Mar 2022 |
| Settles, W. R.-C- O-10-41254 | Conocophillips Company only | Howard Glasscock (Consolidated) | Howard | 11 | 9.33K | 192 | Dec 2011 – Aug 2014 |
| Guitar O-10-26122 | Southstone Energy, LLC only | Moore | Howard | 15 | 9.32K | 21 | by Jan 1993 – Dec 2017 |
| Adkins O-10-46899 | OXY USA Inc. only | Spraberry (Trend Area) | Howard | 1 | 9.32K | 25.6K | Apr 2015 – Apr 2020 |
| Read, H. N. -D- O-10-21270 | Quantum Resources Management,llc only | Coahoma, N. (Fussel) | Howard | 1 | 9.22K | 199K | by Jan 1993 – Jun 2006 |
| Cherry, Edgar F. -A- O-10-9453 | Vaion Energy Texas Oil Operation only | Moore | Howard | 3 | 9.21K | 21 | by Jan 1993 – Dec 2018 |
| Broughton 11 O-10-38339 | Crownquest Operating, LLC only | Spraberry (Trend Area) | Howard | 1 | 9.17K | 15.3K | Jun 2007 – Jul 2011 |
| Carpenter Estate O-10-25991 | Emerald Production Corp. only | Sara-Mag (Canyon Lower) | Howard | 2 | 9.08K | 24K | by Jan 1993 – Apr 1995 |
| Midway 6 O-10-47582 | Crescent Energy Operating, LLC only | Spraberry (Trend Area) | Howard | 1 | 9.08K | 19.2K | Oct 2015 – Jan 2026 |
| Robb O-10-40181 | WTG Exploration only | Spraberry (Trend Area) | Howard | 1 | 9.06K | 21.6K | Feb 2010 – Feb 2018 |
| Roi-Tan O-10-41369 | Crescent Energy Operating, LLC only | Spraberry (Trend Area) | Howard | 1 | 8.98K | 57.5K | Jan 2011 – Jan 2026 |
| Middleton "35" O-10-39859 | SMC Oil & Gas, Inc. only | Spraberry (Trend Area) | Howard | 1 | 8.95K | 7.21K | Apr 2010 – Jul 2023 |
| Guitar 14 O-10-50942 | New Height Energy, LLC only | Spraberry (Trend Area) R 40 Exc | Howard | 2 | 8.91K | 186K | Dec 2018 – Mar 2023 |
| Howard Fee O-10-38918 | Perimeter Resource Company only | Coahoma (Wolfcamp) | Howard | 1 | 8.91K | 48.4K | May 2008 – Jul 2026 |
| Peerless-Chalk O-10-41323 | Sahara Operating Company only | Howard Glasscock (Consolidated) | Howard | 3 | 8.87K | 0 | Dec 2011 – Jun 2026 |
| Clay, H. R. O-10-24284 | Quantum Resources Management,llc only | Howard-Glasscock (Glorieta) | Howard | 2 | 8.84K | 79 | by Jan 1993 – Jan 2005 |
| Ratliff, R. H. O-10-28342 | Marathon Oil Company only | Howard Glasscock | Howard | 6 | 8.84K | 21 | by Jan 1993 – Dec 1997 |
| Heckler 5 O-10-42933 | Ovintiv USA Inc. only | Spraberry (Trend Area) | Howard | 1 | 8.83K | 34K | May 2012 – May 2017 |
| Nichols-Odd Fellows Unit O-10-35904 | Endeavor Energy Resources L.P. only | Nichols 15 (Canyon Reef) | Howard | 1 | 8.81K | 66.5K | Apr 1998 – Apr 2002 |
| Sprague O-10-2789 | 5H Oil Co., LLC only | Howard Glasscock | Howard | 2 | 8.77K | 33 | by Jan 1993 – Mar 2003 |
| Clay, H. R. -C- O-10-41666 | Wash, Robert C. Inc. only | Howard Glasscock (Consolidated) | Howard | 4 | 8.74K | 67 | Dec 2011 – Jul 2026 |
| Summit 105 O-10-45461 | Highpeak Energy Holdings, LLC only | Cedar Flats (Miss.) | Howard | 1 | 8.71K | 126K | Apr 2013 – Aug 2026 |
| Oldham Trust 27 O-10-45575 | Highpeak Energy Holdings, LLC only | Big Spring (Strawn) | Howard | 1 | 8.69K | 37.5K | May 2014 – Jan 2020 |
| Marchbanks "28" O-10-36145 | Santa FE Snyder Corporation only | Hutto, South (Wolfcamp) | Howard | 1 | 8.67K | 20.1K | Nov 1999 – May 2000 |
| Vintage Guffee O-10-23083 | Bettis, Boyle & Stovall only | Ruwe-Cob (Penn Reef) | Howard | 2 | 8.64K | 16.6K | by Jan 1993 – Apr 1997 |
| Guitar Consolidated O-10-53414 | Apex Resources LLC only | Spraberry (Trend Area) | Howard | 35 | 8.59K | 0 | Dec 2019 – Aug 2026 |
| Lauderdale "A" O-11-64929 | SMC Oil & Gas, Inc. only | Ackerly (Dean Sand) | Howard | 1 | 8.57K | 6.71K | by Jan 1993 – Apr 2019 |
| Guthrie "25" O-10-39140 | Laredo Petroleum, Inc. only | Spraberry (Trend Area) | Howard | 1 | 8.56K | 17.2K | Nov 2008 – Feb 2012 |
| Stewart O-10-48050 | Wash, Robert C. Inc. only | Howard Glasscock (Consolidated) | Howard | 3 | 8.47K | 86 | Nov 2014 – Jul 2026 |
| Mapache Unit O-10-35399 | Finley Resources, Inc. only | Sara-Mag (Canyon Reef) | Howard | 1 | 8.42K | 11.2K | Jul 1997 – Jul 1999 |
| Reid 5 O-10-47115 | Crescent Energy Operating, LLC only | Spraberry (Trend Area) | Howard | 1 | 8.4K | 46.2K | Apr 2015 – Jan 2026 |
| Hyman, Sarah -C- O-10-41128 | Sterling Oil and Gas LLC only | Howard Glasscock (Consolidated) | Howard | 9 | 8.38K | 0 | Dec 2011 – Jul 2023 |
| Darwin O-10-51145 | Trilogy Operating, Inc. only | Garden City, NW (Strawn) | Howard | 1 | 8.29K | 81.9K | Aug 2018 – Aug 2026 |
| Little Gem O-10-35353 | Bettis, Boyle & Stovall only | C. C. Gunn (Canyon Reef) | Howard | 1 | 8.26K | 7.61K | Jun 1997 – Aug 1999 |
| Lloyd O-10-35186 | Clear Water Inc. only | Varel (San Andres) | Howard | 2 | 8.16K | 0 | Jan 1997 – Aug 2026 |