| Robertson Hill Ranch C G-13-275758 | Willowbend Investments, Inc. | Newark, East (Barnett Shale) | Palo Pinto | 1 | 54K | 916K | Jul 2008 – Mar 2022 |
| Robertson Hill Ranch B G-13-277362 | Willowbend Investments, Inc. | Newark, East (Barnett Shale) | Palo Pinto | 1 | 42.9K | 993K | Oct 2008 – Jun 2015 |
| Robertson Hill Ranch C G-13-277372 | Willowbend Investments, Inc. | Newark, East (Barnett Shale) | Palo Pinto | 1 | 33.5K | 750K | Jul 2008 – Mar 2022 |
| Robertson Hill Ranch B G-13-277388 | Willowbend Investments, Inc. | Newark, East (Barnett Shale) | Palo Pinto | 1 | 30K | 1.19M | Oct 2008 – Mar 2022 |
| Robertson Hill Ranch B G-13-277358 | Willowbend Investments, Inc. | Newark, East (Barnett Shale) | Palo Pinto | 1 | 26.8K | 413K | Oct 2008 – Mar 2022 |
| Robertson Hill Ranch G-13-238820 | Willowbend Investments, Inc. | Newark, East (Barnett Shale) | Palo Pinto | 1 | 26.4K | 1.08M | May 2008 – Mar 2022 |
| Robertson Hill Ranch G-13-275635 | Willowbend Investments, Inc. | Newark, East (Barnett Shale) | Palo Pinto | 1 | 24.9K | 248K | Oct 2008 – Aug 2017 |
| Robertson Hill Ranch G-13-275632 | Willowbend Investments, Inc. | Newark, East (Barnett Shale) | Palo Pinto | 1 | 15.2K | 238K | Mar 2008 – Mar 2022 |
| Henderson "A" G-13-234445 | Willowbend Investments, Inc. | Rusmag, SE. (Congl. 4900) | Jack | 1 | 5.96K | 74.4K | Oct 2007 – Mar 2020 |
| Elaine Shepherd G-13-285352 | Willowbend Investments, Inc. | Shoshone (Middle Congl.) | Jack | 1 | 5.63K | 177K | Jun 2018 – Apr 2026 |
| Robertson Hill Ranch C G-13-277371 | Willowbend Investments, Inc. | Newark, East (Barnett Shale) | Palo Pinto | 1 | 5.11K | 143K | Jul 2008 – Mar 2022 |
| Franklin G-13-200130 | Willowbend Investments, Inc. | Newark, East (Barnett Shale) | Jack | 1 | 5.02K | 366K | Mar 2004 – Mar 2025 |
| Henderson "A" G-13-211358 | Willowbend Investments, Inc. | Newark, East (Barnett Shale) | Jack | 1 | 2.6K | 110K | Aug 2005 – Sep 2007 |
| Henderson "C" G-13-215327 | Willowbend Investments, Inc. | Rusmag, SE. (Congl. 4900) | Jack | 1 | 2.56K | 481K | Mar 2006 – Apr 2026 |
| Pirtle G-9-221853 | Willowbend Investments, Inc. | Cree-Sykes (Gardner, Upper) | Runnels | 1 | 2.15K | 158K | Sep 2006 – May 2010 |
| Robertson Hill Ranch B G-13-277370 | Willowbend Investments, Inc. | Newark, East (Barnett Shale) | Palo Pinto | 1 | 2.03K | 42.4K | Oct 2008 – Jan 2016 |
| Campbell G-13-219740 | Willowbend Investments, Inc. | Chalk Hill, E. (Congl.) | Archer | 1 | 1.63K | 70.1K | Jun 2006 – Apr 2026 |
| Shepherd, Elaine G-13-278962 | Willowbend Investments, Inc. | Shoshone (Middle Congl.) | Jack | 1 | 1.36K | 191K | Dec 2014 – Jun 2020 |
| Franklin G-13-72487 | Willowbend Investments, Inc. | Darner-Hammon (Bend Congl.) | Jack | 1 | 1.29K | 63K | Jan 1993 – Mar 2025 |
| South Mathis G-13-238749 | Willowbend Investments, Inc. | Pearl Mosley (Congl., Upper) | Jack | 1 | 987 | 122K | Aug 2008 – Dec 2015 |
| Franklin G-13-207304 | Willowbend Investments, Inc. | Newark, East (Barnett Shale) | Jack | 1 | 895 | 178K | Mar 2005 – Jun 2020 |
| Maag, J. B. G-13-224110 | Willowbend Investments, Inc. | Vogtsberger, South(conglomerate) | Archer | 1 | 844 | 125K | Jul 2006 – Apr 2026 |
| Wynn G-13-114197 | Willowbend Investments, Inc. | Tally (Congl.) | Clay | 1 | 743 | 96.8K | Jan 1993 – Apr 2009 |
| Wales G-13-78024 | Willowbend Investments, Inc. | Wales (Viola) | Montague | 1 | 320 | 374K | Jan 1993 – Apr 2026 |
| Fultz G-13-207270 | Willowbend Investments, Inc. | Newark, East (Barnett Shale) | Jack | 1 | 231 | 336K | Mar 2005 – Jun 2017 |
| Medders G-13-219739 | Willowbend Investments, Inc. | Chalk Hill, E. (Congl.) | Archer | 1 | 200 | 58K | Jun 2006 – Mar 2017 |
| Wynn "A" G-13-110582 | Willowbend Investments, Inc. | Tally (Congl.) | Clay | 1 | 169 | 64.6K | Jan 1993 – Apr 2009 |
| Medders G-13-219738 | Willowbend Investments, Inc. | Chalk Hill, E. (Congl.) | Archer | 1 | 117 | 21K | Jun 2006 – Jun 2012 |
| Franklin G-13-113031 | Willowbend Investments, Inc. | Darner-Hammon (Bend Congl.) | Jack | 1 | 68 | 7.71K | Jan 1993 – Apr 2001 |
| Shepherd, Elaine G-13-217591 | Willowbend Investments, Inc. | Shoshone (Middle Congl.) | Jack | 1 | 52 | 107K | Jun 2006 – Jul 2014 |
| Franks G-13-209954 | Willowbend Investments, Inc. | Joplin, SW. (Strawn) | Jack | 1 | 43 | 15.8K | Jun 2005 – Aug 2006 |
| Dennis, Tom G-13-193408 | Willowbend Investments, Inc. | Newark, East (Barnett Shale) | Tarrant | 1 | 15 | 754K | Jan 2003 – Sep 2013 |
| Dennis, Tom G-13-226585 | Willowbend Investments, Inc. | Newark, East (Barnett Shale) | Tarrant | 1 | 13 | 92.5K | Mar 2007 – Mar 2009 |
| Henderson "A" G-13-228782 | Willowbend Investments, Inc. | Newark, East (Barnett Shale) | Jack | 1 | 5 | 11.6K | May 2007 – Jan 2009 |
| Dennis, Tom G-13-201384 | Willowbend Investments, Inc. | Newark, East (Barnett Shale) | Tarrant | 1 | 2 | 704K | Apr 2004 – May 2025 |
| Resort Unit G-13-212960 | Willowbend Investments, Inc. | Newark, East (Barnett Shale) | Tarrant | 1 | 2 | 2.92M | Oct 2005 – Mar 2024 |
| Dennis, Tom G-5-202831 | Willowbend Investments, Inc. | Newark, East (Bend Conglomerate) | Tarrant | 1 | 0 | 886K | Jun 2004 – Apr 2026 |
| Franklin G-13-21353 | Willowbend Investments, Inc. | Darner-Hammon (Bend Congl.) | Jack | 1 | 0 | 0 | — |
| Elaine Shepherd G-13-295874 | Willowbend Investments, Inc. | Jack County Regular (Gas) | Jack | 1 | 0 | 105K | Sep 2023 – Apr 2026 |
| Pirtle G-9-241657 | Willowbend Investments, Inc. | Cree-Sykes (Gardner, Upper) | Runnels | 1 | 0 | 19.5K | Sep 2008 – Mar 2010 |
| Whitehead G-9-209975 | Willowbend Investments, Inc. | Branch, S. (Ranger A) | Concho | 1 | 0 | 80.6K | May 2005 – Jul 2018 |
| Shepherd, Elaine G-13-217592 | Willowbend Investments, Inc. | Shoshone (Middle Congl.) | Jack | 1 | 0 | 15.8K | Jun 2006 – Sep 2011 |
| Shepherd, Elaine G-13-217593 | Willowbend Investments, Inc. | Shoshone (Middle Congl.) | Jack | 1 | 0 | 107K | Jun 2006 – Jul 2014 |
| Whitehead G-9-197313 | Willowbend Investments, Inc. | Branch, S. (Ranger A) | Concho | 1 | 0 | 68.1K | Aug 2003 – Jul 2018 |
| Whitehead G-9-164330 | Willowbend Investments, Inc. | Branch, S. (Crosscut) | Menard | 1 | 0 | 0 | — |
| Whitehead, G. G-9-157421 | Willowbend Investments, Inc. | Branch, S. (Crosscut) | Concho | 1 | 0 | 0 | — |
| Whitehead G-9-150688 | Willowbend Investments, Inc. | Branch, S. (Ranger A) | Concho | 1 | 0 | 80.2K | Jul 1994 – Jun 2002 |
| Whitehead G-9-149319 | Willowbend Investments, Inc. | Branch, South (Crosscut A) | Concho | 1 | 0 | 0 | — |
| Whitehead G-9-149316 | Willowbend Investments, Inc. | Branch, S. (Strawn) | Concho | 1 | 0 | 192K | Mar 1994 – Aug 2017 |
| Whitehead G-9-145372 | Willowbend Investments, Inc. | Branch, S. (Home Creek) | Concho | 1 | 0 | 7.31K | Apr 1993 – Jul 1993 |