| Mackey "29" O-10-36450 | Diamondback E&P LLC only | Bryant -G- (Devonian) | Midland | 2 | 373K | 3.82M | Jan 2000 – Jul 2026 |
| Mackey, A. W. O-8-9190 | Stasney Well Service, LLC only | Schkade (Miss.) | Shackelford | 3 | 131K | 708K | Jan 1993 – Jul 2026 |
| Mackey O-10-28367 | Byrd Operating Company only | Parks (Pennsylvanian) | Midland | 2 | 128K | 321K | Jan 1993 – Aug 2009 |
| Mackey O-5-4233 | Wildfire Energy Operating LLC only | Aguila Vado (Eagleford) | Burleson | 1 | 120K | 402K | Aug 2015 – Jul 2026 |
| Mackey, W. C. O-7-6979 | R2Q Operating LLC only | East Texas | — | 6 | 99K | 8.13K | Jan 1993 – Jul 2026 |
| Mackey O-10-46620 | Diamondback E&P LLC only | Spraberry (Trend Area) | Midland | 3 | 70.1K | 217K | May 2015 – Jul 2026 |
| Mackey, L. L. O-6-14148 | Dallas Production Company LLC only | Willow Springs (Pettit) | Gregg | 2 | 60.9K | 321K | Nov 2001 – Jul 2026 |
| Mackey-McCord A O-8-28073 | Eagle Natural Resources, LLC only | Throckmorton County Regular | Throckmorton | 2 | 37.3K | 12K | Jan 1997 – Jul 2026 |
| Mackey Heirs O-6-14357 | Dallas Production Company LLC only | Willow Springs (T.peak Trans.) | Gregg | 1 | 30K | 621K | Nov 2004 – Jul 2026 |
| Mackey O-10-39307 | Endeavor Energy Resources L.P. only | Parks (Consolidated) | Midland | 2 | 29.9K | 68.1K | Apr 2009 – Sep 2015 |
| Mackey O-6-13672 | O.T. Oil only | Willow Springs (Travis Peak) | Gregg | 1 | 21.3K | 0 | Mar 1997 – Jul 2026 |
| McKinley, J. C. O-6-13440 | Elms Oil Company only | Willow Springs-Mackey (Tr. Pk.) | Gregg | 1 | 14.3K | 20.2K | May 1995 – Jul 2026 |
| Mackey, L. L. O-6-14044 | Buffco Production Inc. only | Willow Springs (Travis Peak) | Gregg | 1 | 13.7K | 70.6K | Oct 2000 – May 2019 |
| Mackey Heirs 'J' O-6-15395 | Dallas Production Company LLC only | Willow Springs (T.peak Trans.) | Gregg | 1 | 13.6K | 211K | Jan 2014 – Jul 2026 |
| Lee -G- O-6-11772 | Eqv Operating LLC only | Willow Springs-Mackey (Tr. Pk.) | Gregg | 1 | 10.4K | 100K | Jan 1993 – Jul 2026 |
| Mackey, W. C. O-6-11552 | Buffco Production Inc. only | Glenwood (Travis Peak) | Gregg | 1 | 6.94K | 13K | Jan 1993 – May 1996 |
| Mackey, L. L. O-6-10480 | Dallas Production, Inc. only | Willow Springs-Mackey (Tr. Pk.) | Gregg | 1 | 6.41K | 121K | Jan 1993 – Feb 2015 |
| Mackey O-10-36161 | Byrd Operating Company only | Parks (Spraberry) | Midland | 1 | 4.33K | 6.49K | Jan 2000 – Sep 2000 |
| Mackey O-6-1324 | Gaines Operating, LLC only | Potter | — | 2 | 3.92K | 5.04K | Jan 1993 – Jul 2026 |
| South Ruth Mackey O-3-20079 | Texakoma Oil & Gas Corporation only | Serbin (Taylor Sand) | Bastrop | 3 | 1.82K | 3.09K | Jan 1993 – Jul 1994 |
| Mackey Prospect O-3-19988 | Texakoma Oil & Gas Corporation only | Serbin (Taylor Sand) | Bastrop | 1 | 1.33K | 5.39K | Jan 1993 – Jul 1994 |
| Stone Heirs O-6-12095 | Progas Properties, Inc. only | Willow Springs-Mackey (Tr. Pk.) | Gregg | 1 | 1.24K | 8.19K | Jan 1993 – Jul 2026 |
| Mackey O-1-3878 | Ginco Operating Co. only | Darst Creek (Buda) | — | 9 | 1.16K | 21 | Jan 1993 – Jul 2026 |
| Mackey Heirs 'H' O-6-15273 | Dallas Production, Inc. only | Willow Springs (T.peak Trans.) | Gregg | 1 | 1.05K | 32.2K | Feb 2013 – Dec 2020 |
| Mackey, A. W. O-8-27790 | Stasney, H. R. & Sons, Ltd. only | Schkade (Caddo, Lower) | Shackelford | 1 | 1.02K | 8.42K | Feb 1996 – Feb 2002 |
| McKinley, J. C. "A" O-6-12378 | Bowles Energy, Inc. only | Willow Springs-Mackey (Tr. Pk.) | Gregg | 1 | 1K | 5.13K | Jan 1993 – Mar 2008 |
| McLendon, J.A. Estate Unit O-6-10272 | Agate Petroleum, Inc. only | Willow Springs-Mackey (Tr. Pk.) | Gregg | 1 | 885 | 35.9K | Jan 1993 – Oct 1999 |
| Mackey, L.L. O-6-16004 | Buffco Production Inc. only | Willow Springs (Travis Peak) | Gregg | 1 | 572 | 12K | Nov 2023 – Jul 2026 |
| Mackey O-10-36148 | Byrd Operating Company only | Warfield (Wolfcamp) | Midland | 1 | 124 | 129 | Nov 1999 – Sep 2000 |
| George Mackey O-1-19063 | Multipay Energy, Inc. only | Riddle | Caldwell | 1 | 123 | 0 | Nov 2015 – Jul 2026 |
| Magrill O-6-12348 | Machin & Associates, Inc. only | Willow Springs-Mackey (Tr. Pk.) | Gregg | 1 | 92 | 359 | Jan 1993 – Sep 1993 |
| Mackey, A. W. O-8-3270 | Ruff Oil Co. only | Shackelford County Regular | — | 4 | 88 | 21 | Jan 1993 – Feb 2002 |
| Mackey, A. W., -B- O-8-8945 | Satterwhite Oil Company only | Shackelford County Regular | — | 3 | 63 | 6 | Jan 1993 – Jun 2006 |
| L. L. Mackey Estate Unit O-6-12948 | Sonat Exploration Company -Tyler only | Willow Springs-Mackey (Tr. Pk.) | Gregg | 1 | 61 | 2.72K | Jan 1993 – Aug 1994 |
| Sumner-Mackey O-8-23451 | Satterwhite Oil Company only | Shackelford County Regular | Shackelford | 2 | 60 | 6 | Jan 1993 – Jul 2026 |
| Mackey A O-6-15586 | Gaines Operating, LLC only | Marion County (Shallow) | Marion | 1 | 60 | 0 | Jan 2018 – Jul 2026 |
| Bill Mackey Gas Unit O-6-14178 | Enerquest Corporation only | Willow Springs (Rodessa) | Gregg | 1 | 35 | 1 | May 2002 – Apr 2004 |
| Mackey-McCord O-8-4995 | Jacobs, C. E., Co. only | McKeichan (Strawn) | Throckmorton | 3 | 23 | 8 | Jan 1993 – Aug 2003 |
| Mackey, W. C. "B" O-7-8672 | Gregg Operating, Inc. only | East Texas | Gregg | 3 | 8 | 4 | Jan 1993 – Mar 2005 |
| Reed-Mackey O-1-3745 | Great Plains Resources, Inc. only | Luling-Branyon | — | 3 | 4 | 0 | Jan 1993 – Jul 2026 |
| Mackey Heirs G-6-180047 | Dallas Production, Inc. only | Willow Springs (Cotton Valley,w) | Gregg | 1 | 0 | 212K | Sep 2000 – Aug 2006 |
| Mackey, Bill G-6-179879 | Enerquest Corporation only | Willow Springs (Travis Peak) | Gregg | 1 | 0 | 32.8K | Sep 2000 – Aug 2003 |
| McAfee, Willie G-6-110755 | Silver Oak Operating, LLC only | Willow Springs-Mackey (Tr. Pk.) | Gregg | 1 | 0 | 413K | Jan 1993 – Jul 2026 |
| McLendon, J.A. G-6-173670 | Trivium Operating, LLC only | Willow Springs-Mackey (Tr. Pk.) | Gregg | 1 | 0 | 172K | Jun 1999 – Apr 2019 |
| Denson G-6-152630 | Cook Exploration Co. only | Willow Springs-Mackey (Tr. Pk.) | Gregg | 1 | 0 | 792K | Nov 1994 – Mar 2021 |
| McGrede G-6-105585 | Cook Exploration Co. only | Willow Springs-Mackey (Tr. Pk.) | Gregg | 1 | 0 | 3.24K | Jan 1993 – Sep 2013 |
| Flewellen G-6-90394 | Neches Exploration, L.L.C. only | Willow Springs-Mackey (Tr. Pk.) | Gregg | 1 | 0 | 764K | Jan 1993 – Jul 2026 |
| McKinley, J.C. "A" G-6-151577 | Bowles Properties, Inc. only | Willow Springs-Mackey (Tr. Pk.) | Gregg | 1 | 0 | 528 | Jul 1994 – May 1995 |
| Mackey Heirs G-6-143362 | Dallas Production Company LLC only | Willow Springs (Cotton Valley,w) | Gregg | 1 | 0 | 3.63M | Jan 1993 – Jul 2026 |
| Casteberry G-6-105463 | Cook Exploration Co. only | Willow Springs-Mackey (Tr. Pk.) | Gregg | 1 | 0 | 57.1K | Jan 1993 – May 2017 |