| Mitchell, Alex 1 G-9-157237 | White Rock Oil & Gas, LLC only | Deer Canyon (Penn) | Terrell | 1 | 516K | 25.7M | Oct 1995 – Aug 2026 |
| Mitchell, Alex 1 G-9-160662 | White Rock Oil & Gas, LLC only | Deer Canyon (Penn) | Terrell | 1 | 330K | 17.5M | Sep 1996 – Aug 2026 |
| Creek Ranch 12 G-9-161624 | White Rock Oil & Gas, LLC only | Deer Canyon (Penn) | Terrell | 1 | 298K | 19.3M | Sep 1996 – Aug 2026 |
| Gills 7 G-10-214540 | Anadarko E&P Onshore LLC only | Haley (Lwr. Wolfcamp-Penn Cons.) | Loving | 1 | 254K | 32.3M | Oct 2005 – May 2024 |
| Creek Ranch 11 G-9-161990 | White Rock Oil & Gas, LLC only | Deer Canyon (Penn) | Terrell | 1 | 250K | 12.2M | Aug 1996 – Aug 2026 |
| University 4 G-9-185612 | White Rock Oil & Gas, LLC only | Deer Canyon (Penn) | Terrell | 1 | 178K | 8.96M | Sep 2001 – Aug 2026 |
| McKenzie 85 G-10-184469 | Alpine Gas Company, LLC only | Walker (Penn Detrital) | Pecos | 1 | 119K | 2.76M | Dec 2001 – May 2005 |
| Creek Ranch 12 G-9-155629 | White Rock Oil & Gas, LLC only | Deer Canyon (Penn) | Terrell | 1 | 93.9K | 5.81M | Jul 1995 – Aug 2026 |
| Mitchell, Alex 1 G-9-165705 | White Rock Oil & Gas, LLC only | Deer Canyon (Penn) | Terrell | 1 | 92.1K | 8.3M | May 1997 – Aug 2026 |
| University 4 G-9-190425 | White Rock Oil & Gas, LLC only | Deer Canyon (Penn) | Terrell | 1 | 90.4K | 3.02M | Jun 2002 – Aug 2026 |
| Mitchell, Alex 2 G-9-154018 | White Rock Oil & Gas, LLC only | Deer Canyon (Penn) | Terrell | 1 | 90.2K | 3.53M | Feb 1995 – Aug 2026 |
| Acu G-9-177346 | White Rock Oil & Gas, LLC only | Acu, E. (Penn Sand) | Terrell | 1 | 89.7K | 9.98M | Mar 2000 – Aug 2026 |
| APC 28-5 G-10-255799 | Anadarko E&P Onshore LLC only | Haley (Lwr. Wolfcamp-Penn Cons.) | Loving | 1 | 89.7K | 14M | Jan 2010 – Jun 2024 |
| DK Boyd 75-14 Gas Unit G-10-239286 | Anadarko E&P Onshore LLC only | Haley (Lwr. Wolfcamp-Penn Cons.) | Loving | 1 | 89.6K | 11M | Nov 2007 – Jul 2026 |
| Gills 6 G-10-230795 | Anadarko E&P Onshore LLC only | Haley (Lwr. Wolfcamp-Penn Cons.) | Loving | 1 | 83.5K | 9.62M | Aug 2007 – Jan 2022 |
| Pennzoil Fee G-4-106486 | Merit Energy Company only | Jeffress, S.E. (Vicksburg T) | Hidalgo | 1 | 72.8K | 1.61M | by Jan 1993 – Nov 1996 |
| Dickson, Paul G-3-216265 | Penn Virginia Oil & Gas, L.P. only | Fannett * | Jefferson | 1 | 68.7K | 3.36M | Oct 2005 – Jan 2009 |
| Creek Ranch 12 G-9-165708 | White Rock Oil & Gas, LLC only | Deer Canyon (Penn) | Terrell | 1 | 64.4K | 4.86M | Apr 1997 – Aug 2026 |
| Creek Ranch 15 G-9-168914 | White Rock Oil & Gas, LLC only | Deer Canyon (Penn) | Terrell | 1 | 61.6K | 6.25M | May 1998 – Aug 2026 |
| McElroy Ranch Co. "F" G-9-143739 | Diamondback E&P LLC only | Block 42 (Penn) | Upton | 1 | 57.9K | 963K | by Jan 1993 – Aug 2026 |
| Haley Unit G-10-74251 | Permian Resources Operating, LLC only | Evetts (Pennsylvanian) | Winkler | 1 | 57.9K | 1.38M | by Jan 1993 – Apr 2025 |
| APC 28-10 G-10-252984 | Anadarko E&P Onshore LLC only | Haley (Lwr. Wolfcamp-Penn Cons.) | Loving | 1 | 57.6K | 4.91M | Aug 2009 – Apr 2024 |
| Mitchell, Mary 1 G-9-158997 | White Rock Oil & Gas, LLC only | Deer Canyon (Penn) | Terrell | 1 | 56.1K | 1.66M | Mar 1996 – Dec 1998 |
| APC 75-30 G-10-251502 | Anadarko E&P Onshore LLC only | Haley (Lwr. Wolfcamp-Penn Cons.) | Loving | 1 | 55.7K | 4.98M | Jun 2009 – Dec 2020 |
| Creek Ranch 1 G-9-164847 | White Rock Oil & Gas, LLC only | Deer Canyon (Penn) | Terrell | 1 | 52.3K | 4.39M | Mar 1997 – Aug 2026 |
| Creek Ranch 12 G-9-175237 | White Rock Oil & Gas, LLC only | Deer Canyon (Penn) | Terrell | 1 | 51.1K | 4.95M | Mar 1999 – Aug 2026 |
| Hughes & Talbot 75-26 G-10-244691 | Anadarko E&P Onshore LLC only | Haley (Lwr. Wolfcamp-Penn Cons.) | Loving | 1 | 48.2K | 10.5M | Nov 2008 – Nov 2023 |
| Creek Ranch 11 G-9-191106 | White Rock Oil & Gas, LLC only | Deer Canyon (Penn) | Terrell | 1 | 46.2K | 8.48M | Mar 2002 – Aug 2026 |
| McKenzie State 6 G-10-184468 | Alpine Gas Company, LLC only | Walker (Penn Detrital) | Pecos | 1 | 43.4K | 435K | Dec 2001 – May 2005 |
| Eagle Draw 15 A G-9-190535 | Nichols,edwin S Explorations Inc only | Trek (Penn) | Crockett | 1 | 43.1K | 6.69M | Jun 2002 – Jan 2010 |
| La Jolla G-4-145367 | Pennzoil Exploration & Prod. Co. only | Brayton, N. (Vicksburg 11,500) | Nueces | 1 | 38.7K | 104K | Feb 1993 – Jan 1998 |
| Demontrand Gas Unit G-6-108989 | Ursus Oil and Gas only | Penn-Griffith (Pettit) | Rusk | 1 | 37.1K | 624K | by Jan 1993 – Jul 2026 |
| Cleveland, R. et Al G-10-133100 | Chevron U. S. A. Inc. only | Worsham-Bayer (Penn.) | Reeves | 1 | 36K | 2.9M | by Jan 1993 – Aug 2025 |
| Haley Unit G-10-179198 | Permian Resources Operating, LLC only | Evetts (Pennsylvanian) | Winkler | 1 | 34.7K | 3.64M | Jul 2001 – Feb 2021 |
| APC 29-1 G-10-234033 | Anadarko E&P Onshore LLC only | Haley (Lwr. Wolfcamp-Penn Cons.) | Loving | 1 | 33.2K | 15.2M | Dec 2006 – Apr 2024 |
| Penn, Stella G-1-154937 | Varas Energy Operating Company, only | Hostetter (Wilcox 10300) | McMullen | 1 | 32.6K | 6.21M | May 1995 – Jun 2001 |
| Mitchell, Alex 1 G-9-191350 | White Rock Oil & Gas, LLC only | Deer Canyon (Penn) | Terrell | 1 | 32.1K | 5.82M | Aug 2002 – Aug 2026 |
| University 20-7 G-10-226682 | Pdeh LLC only | Haley (Lwr. Wolfcamp-Penn Cons.) | Loving | 1 | 30.9K | 1.45M | Jan 2007 – Mar 2022 |
| University 4 G-9-249802 | White Rock Oil & Gas, LLC only | Deer Canyon (Penn) | Terrell | 1 | 30.9K | 794K | Feb 2009 – Aug 2026 |
| South Keystone /Ellen/ Unit G-10-140449 | Pennzoil Exploration & Prod. Co. only | Keystone (Ellenburger) | Winkler | 1 | 30K | 152K | by Jan 1993 – Jul 1997 |
| Cleveland, R. et Al G-10-76231 | Chevron U. S. A. Inc. only | Worsham-Bayer (Penn.) | Reeves | 1 | 28.6K | 3.42M | by Jan 1993 – Aug 2026 |
| Culbertson State 16 G-9-153377 | White Rock Oil & Gas, LLC only | South Park (Penn) | Terrell | 1 | 27.7K | 3.11M | Jan 1995 – Mar 2004 |
| Anderson 11 G-10-244116 | Anadarko E&P Onshore LLC only | Haley (Lwr. Wolfcamp-Penn Cons.) | Loving | 1 | 25.8K | 13.1M | Sep 2008 – Jul 2026 |
| Cleveland, R. et Al G-10-76139 | Chevron U. S. A. Inc. only | Worsham-Bayer (Penn.) | Reeves | 1 | 24.9K | 2.58M | by Jan 1993 – Feb 2015 |
| Haley, J. E. 29 G-10-215363 | Anadarko E&P Onshore LLC only | Haley (Lwr. Wolfcamp-Penn Cons.) | Loving | 1 | 24.3K | 1.21M | May 2005 – Oct 2016 |
| Lyne, T. J.-Pvog G-2-191196 | Penn Virginia Oil & Gas, L.P. only | Tom Lyne, N. (Wilcox 10,700) | Live Oak | 1 | 24.3K | 1.05M | Jun 2002 – Mar 2008 |
| Creek Ranch -12- G-9-224129 | White Rock Oil & Gas, LLC only | Deer Canyon (Penn) | Terrell | 1 | 23.6K | 4.68M | Sep 2004 – Aug 2026 |
| Moore, Kathleen J. G-10-20680 | XTO Energy Inc. only | Rojo Caballos (Penn.) | Pecos | 1 | 23.6K | 4.34M | by Jan 1993 – Aug 2026 |
| Turner Ranch West G-9-272530 | Hibernia Resources IV, LLC only | June Ann (Pennsylvanian) | Tom Green | 1 | 23.4K | 752K | Aug 2012 – Aug 2026 |
| D. Pennington Coop Unit G-13-262553 | Bedrock Production, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 22.2K | 1.34M | Aug 2011 – Mar 2021 |