| Eidson "C" O-10-23114 | Diamondback E&P LLC only | Penwell | Ector | 1 | 7.8K | 21 | Jan 1993 – Jan 2023 |
| Cummins U O-10-28917 | Baker Operating, Inc. only | Goldsmith, W. (San Andres) | Ector | 1 | 7.65K | 51.6K | Jan 1993 – Apr 2026 |
| Ector -AP- Fee O-10-17974 | Garner's Well Service LLC only | Harper | Ector | 6 | 7.59K | 55 | Jan 1993 – Oct 2012 |
| Parker, J. E. O-10-9448 | Bright & Co. only | Goldsmith (5600) | Ector | 1 | 7.57K | 19.7K | Jan 1993 – Oct 2006 |
| Cowden F O-10-46133 | Andector Exploration Company only | Goldsmith | Ector | 1 | 7.5K | 2.89K | Oct 2011 – May 2018 |
| Susie O-10-14461 | Phoenix Hydrocarbons Operating only | Goldsmith (5600) | Ector | 1 | 7.41K | 15.8K | Jan 1993 – Oct 2006 |
| Carlinville National Bank O-10-8093 | Three-B Oil Company, The only | Yarbrough & Allen (Wolfcamp) | Ector | 1 | 7.35K | 21 | Jan 1993 – Apr 2015 |
| Hawkeye A O-10-36231 | OXY USA WTP LP only | G & W (Devonian) | Ector | 1 | 7.34K | 22.5K | Jan 2000 – Jun 2002 |
| Parker Trust "11" O-10-34909 | Sandridge Expl. and Prod., LLC only | Monahans Draw (Canyon 8388) | Ector | 1 | 7.25K | 153 | Apr 1996 – Mar 2008 |
| Cross -C- O-10-47660 | OXY USA WTP LP only | Cowden, South | Ector | 1 | 7.11K | 6.2K | Feb 2016 – Apr 2026 |
| Douglass Parker O-10-41873 | Sheridan Production Company, LLC only | Monahans Draw (Canyon 8388) | Ector | 1 | 7.11K | 10.2K | Nov 2011 – Mar 2014 |
| Connell Estate C O-10-55838 | Cross Timbers Energy, LLC only | Jordan, S. (Devonian) | Ector | 1 | 7.05K | 12.5K | Mar 2021 – Mar 2022 |
| Blakeney, B. H. -A- O-10-21424 | Endeavor Energy Resources L.P. only | Goldsmith, E. (Grayburg, N.) | Ector | 2 | 6.95K | 39.2K | Jan 1993 – Oct 2001 |
| Henderson -A- O-10-874 | Satanta Oil Company only | Cowden, South | Ector | 2 | 6.83K | 1.02K | Jan 1993 – Apr 2026 |
| Cowden G O-10-28931 | Magruder, Edwin H., Jr. only | Goldsmith (5600) | Ector | 1 | 6.82K | 46.4K | Jan 1993 – Oct 2006 |
| Abigail O-10-44186 | Scout Energy Management LLC only | Goldsmith (Clear Fork) | Ector | 2 | 6.81K | 17.1K | Jun 2013 – Apr 2018 |
| Johnson "F-1" O-10-30348 | Arco Permian only | Cowden, North (Canyon) | Ector | 1 | 6.81K | 3.82K | Jan 1993 – Nov 1994 |
| TXL -E- O-10-49721 | Formentera Operations LLC only | Goldsmith, W. (San Andres) | Ector | 4 | 6.8K | 40.1K | Mar 2018 – Apr 2026 |
| TXL "L" a/C 2 O-10-49726 | Formentera Operations LLC only | Goldsmith, W. (San Andres) | Ector | 3 | 6.78K | 46K | Mar 2018 – Apr 2026 |
| Ratliff -E- O-10-33023 | Pronghorn Management Corporation only | Headlee (Bend) | Ector | 1 | 6.62K | 93 | Mar 1993 – Jul 2012 |
| Edwards-Brown O-10-13545 | Baker Operating, Inc. only | Double -H- (Grayburg) | Ector | 2 | 6.6K | 46 | Jan 1993 – Apr 2026 |
| Headlee 2920 G O-10-58615 | Diamondback E&P LLC only | Spraberry (Trend Area) | Ector | 1 | 6.56K | 5.54K | Mar 2026 – Apr 2026 |
| Midland Farms -AJ- O-10-9162 | Apache Corporation only | Fasken (Penn.) | Ector | 3 | 6.53K | 16.4K | Jan 1993 – Jan 1997 |
| Bunch-O-Lunch O-10-36438 | OXY USA WTP LP only | Goldsmith, W. (Fusselman) | Ector | 1 | 6.46K | 4.89K | Oct 2000 – Jul 2002 |
| Thomas -A- O-10-49720 | Formentera Operations LLC only | Goldsmith, W. (San Andres) | Ector | 2 | 6.42K | 49.5K | Mar 2018 – Apr 2026 |
| TXL -L- Acct. 4 O-10-11647 | Apache Corporation only | TXL (San Andres) | Ector | 2 | 6.4K | 25.5K | Jan 1993 – Feb 2018 |
| Rigel O-10-34268 | Marathon Oil Company only | Orion (Wolfcamp) | Ector | 1 | 6.38K | 60.6K | Aug 1994 – Apr 1996 |
| Fraser, Geo. C. -A- O-10-2440 | Water Energy Services, LLC only | Harper | Ector | 5 | 6.34K | 4.04K | Jan 1993 – May 2005 |
| Mobil-Slator -2- O-10-29824 | Baker Operating, Inc. only | Goldsmith (5600) | Ector | 1 | 6.31K | 21 | Jan 1993 – Oct 2006 |
| Slator -a- Tract II O-10-49725 | Formentera Operations LLC only | Goldsmith, W. (San Andres) | Ector | 2 | 6.27K | 39.4K | Mar 2018 – Apr 2026 |
| Deford O-10-34526 | Phillips Petroleum Company only | Goldsmith (5600) | Ector | 1 | 6.23K | 22.2K | Jun 1995 – Sep 1997 |
| Goldsmith, C.A. Etal O-10-50959 | XTO Energy Inc. only | TXL (Wolfcamp) | Ector | 3 | 6.14K | 12.4K | Nov 2018 – Jun 2022 |
| Phillips-Slator -26- A O-10-30092 | Forest Oil Permian Corporation only | Goldsmith (5600) | Ector | 1 | 6.12K | 7.4K | Jan 1993 – Apr 1999 |
| TXL -GGG- O-10-17270 | Raptor Resources, Inc. only | Lawson (San Andres) | Ector | 1 | 6.1K | 110 | Jan 1993 – Aug 2002 |
| Connell, W.E. NCT-5 O-10-64238 | Cross Timbers Energy, LLC only | Jordan (Fusselman) | Ector | 1 | 6.1K | 13.1K | Sep 2025 – Apr 2026 |
| Phillips-Slator -24- O-10-38036 | Scout Energy Management LLC only | Goldsmith (Clear Fork) | Ector | 1 | 6.08K | 635 | Nov 2006 – Jun 2023 |
| TXL "L" O-10-23977 | Dominion Oklahoma Texas E&P, Inc only | Goldsmith, East (Clear Fork LO) | Ector | 1 | 6.08K | 24K | Jan 1993 – Jan 1999 |
| Eidson, Millard O-10-4881 | Eastland Oil Company, The only | Penwell (Pennsylvanian, Lower) | Ector | 1 | 6K | 21 | Jan 1993 – Apr 2003 |
| Slator -D- O-10-49715 | Formentera Operations LLC only | Goldsmith, W. (San Andres) | Ector | 2 | 5.96K | 52.6K | Mar 2018 – Apr 2026 |
| TXL B O-10-35972 | OXY USA Inc. only | TXL (Devonian) | Ector | 1 | 5.91K | 4.28K | Nov 1998 – Jun 1999 |
| Thomas -E- O-10-20189 | OXY USA WTP LP only | TXL (San Andres) | Ector | 3 | 5.87K | 14.8K | Jan 1993 – Jun 2015 |
| Cowden "Co" O-10-24904 | Raptor Petroleum Develop, LLC only | Cowden, South | Ector | 1 | 5.84K | 1.39K | Jan 1993 – May 2018 |
| Forbess O-10-4865 | Phillips Petroleum Company only | Penwell (Ellenburger) | Ector | 2 | 5.84K | 4.47K | Jan 1993 – Mar 1994 |
| TXL-C O-10-50075 | Drake Oil & Gas, LLC only | Goldsmith, W. (San Andres) | Ector | 3 | 5.8K | 0 | Jul 2018 – Apr 2026 |
| Edwards Estate O-10-25168 | Hendrix, John H. Corporation only | Edwards, West (Canyon) | Ector | 1 | 5.8K | 1.17K | Jan 1993 – Jan 1995 |
| Connell, Heirs O-10-55146 | Cross Timbers Energy, LLC only | Jordan, S. (Devonian) | Ector | 1 | 5.76K | 1.75K | Nov 2020 – Sep 2021 |
| TXL "J" G-10-46983 | Walsh & Watts, Inc. only | Goldsmith, W. (San Andres) | Ector | 1 | 5.76K | 456K | Jan 1993 – Apr 2026 |
| Trapper, John A O-10-36519 | OXY USA WTP LP only | Mash (Devonian) | Ector | 1 | 5.74K | 21.9K | Oct 2000 – Apr 2002 |
| Frank -A- O-10-233 | Conocophillips Company only | Andector (McKee) | Ector | 6 | 5.69K | 27.6K | Jan 1993 – May 1998 |
| Holt, O. B. O-10-35483 | Texland Petroleum, L.P. only | Cowden, North (Deep) | Ector | 2 | 5.68K | 496 | Apr 1997 – Aug 2008 |