| Pegasus Field Unit #3 PF Record G-9-151315 | XTO Energy Inc. only | Pegasus (Devonian) | Upton | 1 | 2.35M | 184M | Nov 1994 – Apr 2026 |
| Pegasus Ellen. Unit PF Record G-9-196072 | XTO Energy Inc. only | Pegasus (Ellenburger) | Upton | 1 | 336K | 1.54M | Jun 2003 – Feb 2026 |
| Windham "108" G-9-205285 | EOG Resources, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 190K | 4.11M | Jun 2003 – Apr 2026 |
| Amacker-Barnett 21 Unit G-9-205076 | EOG Resources, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 163K | 2.32M | Nov 2003 – Apr 2026 |
| Bloxom G-9-183825 | BCP Resources, LLC only | Bloxom (Devonian) | Upton | 1 | 155K | 3.88M | Mar 2001 – Apr 2026 |
| Blue Topaz 102 G-9-198027 | EOG Resources, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 154K | 4.74M | Sep 2002 – Apr 2026 |
| Barnett 21 G-9-194003 | EOG Resources, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 151K | 3.3M | Jan 2003 – Apr 2026 |
| Amacker, V.T. 61 G-9-208672 | Civitas Permian Operating, LLC only | Amacker-Tippett (Devonian) | Upton | 1 | 147K | 4.27M | Dec 2004 – Nov 2023 |
| Amacker Allen 80 G-9-205415 | EOG Resources, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 140K | 2.5M | Aug 2003 – Apr 2026 |
| Amacker "a" 88 G-9-201807 | EOG Resources, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 136K | 3.09M | May 2002 – Apr 2026 |
| Barnett "21" G-9-206557 | EOG Resources, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 128K | 1.67M | Jun 2003 – Apr 2026 |
| Amacker, V. T. 61 G-9-218416 | Civitas Permian Operating, LLC only | Amacker-Tippett (Devonian) | Upton | 1 | 128K | 5.25M | Apr 2006 – Mar 2026 |
| Shirk 13 G-9-200687 | EOG Resources, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 128K | 2.28M | May 2003 – Nov 2024 |
| Windham 108 G-9-193431 | EOG Resources, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 127K | 4.11M | Jan 2003 – Apr 2026 |
| University Section 3 G-9-183827 | BCP Resources, LLC only | Bloxom (Devonian) | Upton | 1 | 125K | 7.46M | Jul 2001 – Mar 2026 |
| Bloxom G-9-180530 | BCP Resources, LLC only | Bloxom (Devonian) | Upton | 1 | 123K | 3.06M | Aug 2000 – Dec 2024 |
| Halff Estate "20" G-9-205244 | EOG Resources, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 122K | 1.52M | Feb 2004 – Apr 2026 |
| Peridot 101 G-9-204089 | EOG Resources, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 122K | 2.17M | Jan 2004 – Apr 2026 |
| Halff Estate "20" G-9-185073 | EOG Resources, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 120K | 2.67M | Jun 2001 – Apr 2026 |
| Amacker, V. T. 78 G-9-208664 | Civitas Permian Operating, LLC only | Amacker-Tippett (Devonian) | Upton | 1 | 118K | 2.76M | Nov 2004 – Apr 2020 |
| Amacker, V. T. 78 G-9-211884 | Civitas Permian Operating, LLC only | Amacker-Tippett (Devonian) | Upton | 1 | 116K | 2.4M | Mar 2005 – Oct 2020 |
| Garnet 108 G-9-201810 | EOG Resources, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 116K | 3M | Oct 2003 – Apr 2026 |
| Amacker-Allen 80 G-9-206421 | EOG Resources, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 115K | 1.78M | Apr 2004 – Jul 2025 |
| Mann 22 G-9-199505 | EOG Resources, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 114K | 1.69M | Jul 2003 – Apr 2026 |
| Weir, George 14 G-9-197791 | EOG Resources, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 111K | 2.61M | Dec 2002 – Apr 2026 |
| Blue Topaz 102 G-9-206556 | EOG Resources, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 110K | 2.31M | Sep 2003 – Apr 2026 |
| Shirk 13 G-9-190940 | EOG Resources, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 109K | 2.7M | Jul 2002 – Apr 2026 |
| Amacker-Bell 99 Unit G-9-201812 | EOG Resources, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 107K | 1.67M | Nov 2003 – Apr 2026 |
| Amacker, V. T. 106 G-9-148522 | Civitas Permian Operating, LLC only | Amacker-Tippett (Devonian) | Upton | 1 | 106K | 11.7M | Feb 1994 – Mar 2026 |
| Amacker, V. T. 61 G-9-202806 | Civitas Permian Operating, LLC only | Amacker-Tippett (Devonian) | Upton | 1 | 106K | 2.21M | Oct 2003 – Mar 2026 |
| Colter Trust G-9-180829 | BCP Resources, LLC only | Bloxom (Devonian) | Upton | 1 | 106K | 2.13M | Dec 2000 – Mar 2026 |
| Weir, George "14" G-9-198164 | EOG Resources, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 103K | 1.87M | Jul 2003 – Apr 2026 |
| Railway Ranch 9 G-9-212684 | Extex Operating Company only | Davis (Devonian) | Upton | 1 | 99.5K | 2.8M | Jul 2005 – Dec 2025 |
| Amacker Allen "80" G-9-219300 | EOG Resources, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 99.4K | 1.73M | Jun 2006 – Apr 2026 |
| Sapphire 102 G-9-205372 | EOG Resources, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 98.6K | 1.46M | Apr 2004 – Apr 2026 |
| Monique G-9-207321 | Summit Petroleum LLC only | Amacker-Tippett (Devonian) | Upton | 1 | 98.2K | 1.37M | Sep 2004 – Oct 2021 |
| Jade 101 G-9-211656 | EOG Resources, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 97K | 1.29M | Jan 2005 – Apr 2026 |
| Darby-Wildhorse 110 Unit G-9-211809 | EOG Resources, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 96.7K | 2.24M | May 2005 – Apr 2026 |
| Windham 103 G-9-199526 | EOG Resources, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 96.1K | 3.15M | Sep 2003 – Apr 2026 |
| Amacker, V. T. 79 G-9-210686 | Civitas Permian Operating, LLC only | Amacker-Tippett (Devonian) | Upton | 1 | 95.8K | 2.38M | Apr 2005 – Apr 2016 |
| Amacker-Barnett 21 Unit G-9-212285 | EOG Resources, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 94.1K | 1.19M | May 2004 – Apr 2026 |
| Pegasus Field Unit # 3 G-9-263664 | Breitburn Operating L.P. only | Pegasus (Devonian) | Upton | 1 | 93K | 1.66M | Aug 2010 – Jul 2021 |
| University 7 G-9-192720 | BCP Resources, LLC only | Benedum (Devonian, Gas) | Upton | 1 | 90.6K | 2.19M | Dec 2002 – Feb 2024 |
| Barnett Amacker G-9-223837 | Southwest Royalties, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 90.4K | 1.59M | Nov 2006 – Aug 2024 |
| Laura Eaves "87" G-9-206440 | EOG Resources, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 89.4K | 923K | Jul 2004 – Jul 2024 |
| Amacker, Barnett G-9-217389 | Southwest Royalties, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 89.4K | 2.71M | Feb 2006 – Apr 2026 |
| Crazy-Wildhorse 110 Unit G-9-212682 | EOG Resources, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 87.6K | 798K | Jun 2005 – Apr 2026 |
| Amacker, V. T. 106 G-9-248526 | Civitas Permian Operating, LLC only | Amacker-Tippett (Devonian) | Upton | 1 | 86.9K | 3M | Mar 2009 – Mar 2026 |
| Amacker, V. T. 105 G-9-18639 | Civitas Permian Operating, LLC only | Amacker-Tippett (Devonian) | Upton | 1 | 86.6K | 5.99M | Jan 1993 – Dec 2012 |
| Amacker Allen "80" G-9-207248 | EOG Resources, Inc. only | Amacker-Tippett (Devonian) | Upton | 1 | 84.2K | 907K | Oct 2004 – Apr 2026 |