| East Cowden (Grayburg) Unit O-10-22927 | Basin Oil & Gas Operating, LLC only | Cowden, North | Ector | 92 | 10.4M | 3.6M | Jan 1993 – Apr 2026 |
| Moss Grayburg-San Andres Unit O-10-20089 | OXY USA Inc. only | Cowden, South | Ector | 39 | 960K | 248K | Jan 1993 – Apr 2026 |
| West Grayburg Unit O-10-20416 | Occidental Permian Ltd. only | Cowden, South | Ector | 41 | 951K | 257K | Jan 1993 – Apr 2026 |
| Edwards Field Grayburg Unit O-10-20424 | AD Astra Resources, LLC only | Edwards | Ector | 84 | 585K | 120K | Jan 1993 – Apr 2026 |
| Lazy E "A" O-10-33519 | Beach Exploration, Inc. only | Double -H- (Grayburg) | Ector | 7 | 327K | 81.7K | Jan 1993 – Apr 2026 |
| Kloh, A., Etal -G- /NCT-B/ O-10-14412 | Acoma Operating, LLC only | Moss (Grayburg) | Ector | 5 | 186K | 164K | Jan 1993 – Apr 2026 |
| Foster, H. S. -C- O-10-9641 | Helms Oil & Gas, LLC only | Double -H- (Grayburg) | Ector | 6 | 185K | 104K | Jan 1993 – Oct 2021 |
| Johnson O-10-14920 | Unitex Oil & Gas, L.L.C. only | Donnelly, North (Grayburg) | Ector | 7 | 155K | 263K | Jan 1993 – Apr 2026 |
| Barrow, Augusta O-10-27395 | Formentera Operations LLC only | Hence (Grayburg) | Ector | 3 | 110K | 17.8K | Jan 1993 – Apr 2026 |
| Lazy -E- O-10-33271 | Beach Exploration, Inc. only | Double -H- (Grayburg) | Ector | 4 | 109K | 32.6K | Jan 1993 – Apr 2026 |
| TXL O-10-8306 | Libertad Operating LLC only | Double -H- (Grayburg) | Ector | 3 | 105K | 48.4K | Jan 1993 – Mar 2026 |
| Edwards -B- II O-10-13633 | Baker Operating, Inc. only | Double -H- (Grayburg) | Ector | 5 | 82.8K | 1.25K | Jan 1993 – Apr 2026 |
| Edwards-Brown -B- O-10-28930 | Baker Operating, Inc. only | Double -H- (Grayburg) | Ector | 3 | 68.6K | 114K | Jan 1993 – Apr 2026 |
| Ector 'BF' Fee O-10-34397 | Diamond S Energy Company only | York (Grayburg) | Ector | 4 | 65K | 326K | Jan 1995 – Apr 2026 |
| Ector -a- Fee O-10-8643 | Helms Oil & Gas, LLC only | Double -H- (Grayburg) | Ector | 7 | 63.4K | 18.9K | Jan 1993 – Aug 2021 |
| Edwards O-10-46498 | Flat Top Operating, LLC only | Double -H- (Grayburg) | Ector | 3 | 61K | 0 | Jun 2015 – Mar 2026 |
| Moss, Paul O-10-8690 | Aghorn Operating, Inc. only | Moss (Grayburg) | Ector | 8 | 44.4K | 1.25K | Jan 1993 – Feb 2026 |
| Edwards O-10-14739 | Baker Operating, Inc. only | Double -H- (Grayburg) | Ector | 4 | 40.9K | 24.3K | Jan 1993 – Apr 2026 |
| Edwards-Ranch -B- O-10-27807 | Baker Operating, Inc. only | Double -H- (Grayburg) | Ector | 3 | 30.4K | 28.6K | Jan 1993 – Apr 2026 |
| Edwards -B- O-10-13416 | Baker Operating, Inc. only | Double -H- (Grayburg) | Ector | 5 | 28.7K | 82.4K | Jan 1993 – Apr 2026 |
| Moss, Paul, Etal -A- O-10-8783 | Gray, W. H. Operating only | Harper | Ector | 1 | 25.5K | 6.88K | Jan 1993 – Apr 2026 |
| Edwards Estate -GB- O-10-13877 | Baker Operating, Inc. only | Double -H- (Grayburg) | Ector | 4 | 24K | 21 | Jan 1993 – Apr 2026 |
| Edwards O-10-37755 | Schalk Oil Company, Inc. only | Double -H- (Grayburg) | Ector | 1 | 22.8K | 0 | Dec 2005 – Aug 2019 |
| Shell, Edwards O-10-30682 | Baker Operating, Inc. only | Double -H- (Grayburg) | Ector | 2 | 21.7K | 8.77K | Jan 1993 – Apr 2026 |
| Foster, B. J. -A- O-10-35215 | Baker Operating, Inc. only | Double -H- (Grayburg) | Ector | 1 | 21.6K | 0 | Feb 1997 – Apr 2026 |
| Goldsmith, C. A. O-10-38510 | Hilcorp Energy Company only | Goldsmith (Grayburg) | Ector | 4 | 21.2K | 709K | Nov 2007 – May 2016 |
| Edwards -41- O-10-30162 | Baker Operating, Inc. only | Double -H- (Grayburg) | Ector | 1 | 20.3K | 9.01K | Jan 1993 – Apr 2026 |
| Edwards -A- O-10-13415 | Baker Operating, Inc. only | Double -H- (Grayburg) | Ector | 2 | 14.8K | 59 | Jan 1993 – Apr 2026 |
| Edwards Estate O-10-27063 | Midenergy Operating, LLC only | Double -H- (Grayburg) | Ector | 1 | 13.5K | 594 | Jan 1993 – Nov 2011 |
| Edwards Ranch -32- O-10-13516 | Baker Operating, Inc. only | Double -H- (Grayburg) | Ector | 1 | 12.3K | 46 | Jan 1993 – Apr 2026 |
| Ector -C- Fee /NCT-2/ O-10-17029 | O'Ryan Oil and Gas only | Moss (Grayburg) | Ector | 1 | 11.9K | 22 | Jan 1993 – Apr 2026 |
| Edwards -C- O-10-13417 | Baker Operating, Inc. only | Double -H- (Grayburg) | Ector | 1 | 10.6K | 58 | Jan 1993 – Apr 2026 |
| Clyde -B- O-10-20011 | Conocophillips Company only | Goldsmith (Grayburg) | Ector | 1 | 10.3K | 37.3K | Jan 1993 – Apr 2007 |
| Father Mulcahy O-10-37413 | Andector Exploration Company only | Goldsmith (Grayburg) | Ector | 1 | 9.49K | 0 | Mar 2004 – Oct 2011 |
| Johnson, J. L. O-10-17759 | Sundown Energy LP only | Donnelly, North (Grayburg) | Ector | 4 | 8.15K | 29.1K | Jan 1993 – Nov 2002 |
| 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 |
| Edwards-Brown O-10-13545 | Baker Operating, Inc. only | Double -H- (Grayburg) | Ector | 2 | 6.6K | 46 | Jan 1993 – Apr 2026 |
| Cowden O-10-17307 | Sundown Energy LP only | Donnelly, North (Grayburg) | Ector | 2 | 4.9K | 249K | Jan 1993 – Oct 1999 |
| York, R. L. -B- O-10-33939 | Legacy Reserves Operating LP only | York (Queen-Grayburg) | Ector | 1 | 4.12K | 3.75K | Sep 1993 – Oct 1994 |
| Ector -AU- Fee G-10-36023 | Formentera Operations LLC only | Goldsmith, East (Grayburg) | Ector | 1 | 4.02K | 786K | Jan 1993 – Jul 2019 |
| Cross, J. T. O-10-12062 | Acoma Operating, LLC only | Moss (Grayburg) | Ector | 5 | 3.27K | 18 | Jan 1993 – Jan 2014 |
| TXL 1902-T O-10-33940 | Endeavor Energy Resources L.P. only | York (Queen-Grayburg) | Ector | 4 | 3.23K | 17.5K | Sep 1993 – May 2006 |
| Embar O-10-39756 | Conocophillips Company only | Andector (Grayburg) | Ector | 2 | 3.06K | 0 | Jan 2013 – Apr 2017 |
| TXL O-10-13105 | Cuervo, Inc. only | Double -H- (Grayburg) | Ector | 2 | 2.6K | 420 | Jan 1993 – Nov 1998 |
| Wight -6- Gas Unit G-10-19938 | United Oil & Shale LLC only | Goldsmith, East (Grayburg) | Ector | 1 | 2.44K | 1.25M | Jan 1993 – Feb 2014 |
| TXL O-10-33630 | Denbury Management, Inc. only | York (Grayburg) | Ector | 3 | 2.37K | 2.23K | Jan 1993 – Aug 1993 |
| Embar-B O-10-35562 | Conocophillips Company only | Andector (Grayburg) | Andrews | 2 | 2.3K | 12.2K | Jul 1997 – Oct 2002 |
| Jessie B O-10-35631 | Black Gold Industries Oprtng LLC only | Goldsmith (Grayburg) | Ector | 2 | 1.97K | 69.6K | Feb 1998 – Oct 2023 |
| Blakeney 32 G-10-58099 | Breck Operating Corp. only | Goldsmith, East (Grayburg) | Ector | 1 | 1.96K | 26.3K | Jan 1993 – Jun 1997 |
| Johnson, J. L., Jr., Etal O-10-9208 | Pennant Dev. and Prod., LLC only | Donnelly, North (Grayburg) | Ector | 1 | 1.77K | 19.9K | Jan 1993 – Mar 2013 |