| Armstrong Gas Unit G-3-110517 | Perdido Energy, LLC only | Peveto (9600) | Orange | 1 | 297K | 6.94M | by Jan 1993 – Jan 2024 |
| Armstrong State G-10-281705 | COG Operating LLC only | Ford, West (Wolfcamp) | Culberson | 1 | 163K | 3.09M | Nov 2016 – Aug 2026 |
| Armstrong-Armstrong Unit G-3-144580 | Hunt Petroleum Corporation only | Giddings (Austin Chalk, Gas) | Fayette | 1 | 161K | 1.9M | Feb 1993 – Jan 2004 |
| Armstrong G-14-273227 | Unbridled Resources, LLC only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 149K | 6.73M | Oct 2013 – Aug 2026 |
| Armstrong State G-10-278238 | COG Operating LLC only | Ford, West (Wolfcamp) | Culberson | 1 | 149K | 2.94M | May 2015 – Aug 2026 |
| Armstrong State G-10-278421 | COG Operating LLC only | Sandbar (Bone Spring) | Culberson | 1 | 145K | 1.03M | Apr 2013 – Aug 2026 |
| Armstrong N State Unit G-10-276246 | COG Operating LLC only | Sandbar (Bone Spring) | Culberson | 1 | 109K | 739K | Feb 2014 – Mar 2025 |
| Old Ocean Unit G-3-133678 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 88.5K | 1.3M | by Jan 1993 – Jul 2001 |
| Old Ocean Unit G-3-125946 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 77.4K | 657K | by Jan 1993 – Sep 2004 |
| Armstrong G-14-276551 | Unbridled Resources, LLC only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 77.1K | 3.74M | Nov 2014 – Aug 2026 |
| Armstrong G-14-280376 | Unbridled Resources, LLC only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 64.6K | 3.31M | Jul 2015 – Jul 2025 |
| Armstrong 16 G-10-289347 | Resolute Natural Res. Co., LLC only | Phantom (Wolfcamp) | Reeves | 1 | 64.4K | 700K | Sep 2012 – Sep 2024 |
| Old Ocean Unit G-3-157797 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 54.3K | 3.21M | May 1995 – Jan 2024 |
| Armstrong G-14-275384 | Unbridled Resources, LLC only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 52.6K | 2.71M | Jun 2014 – Aug 2026 |
| Old Ocean Unit G-3-131307 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 46K | 1.76M | by Jan 1993 – Dec 1999 |
| Old Ocean Unit G-3-87408 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Matagorda | 1 | 37.5K | 2.5M | by Jan 1993 – Jan 2011 |
| Old Ocean Unit G-3-135848 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 34.8K | 4.22M | by Jan 1993 – Nov 2011 |
| Armstrong 14 G-10-289550 | Resolute Natural Res. Co., LLC only | Phantom (Wolfcamp) | Reeves | 1 | 30.4K | 229K | Jul 2012 – Nov 2021 |
| Old Ocean Unit G-3-7587 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 28K | 4.27M | by Jan 1993 – Feb 2004 |
| Old Ocean Unit G-3-7584 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 26.5K | 3.57M | by Jan 1993 – Nov 2002 |
| Old Ocean Unit G-3-126737 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 26.1K | 1.85M | by Jan 1993 – Aug 2026 |
| Armstrong G-14-282790 | Unbridled Resources, LLC only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 26K | 1.26M | Dec 2016 – Aug 2026 |
| Old Ocean Unit G-3-136880 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 25.3K | 4.43M | by Jan 1993 – Aug 2026 |
| Armstrong G-14-218380 | Complete Oil & Gas Services, LLC only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 24.3K | 1.1M | Apr 2006 – Mar 2023 |
| Armstrong G-14-276813 | Unbridled Resources, LLC only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 22.1K | 1.35M | Jul 2014 – Jul 2025 |
| Armstrong G-14-286875 | Unbridled Resources, LLC only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 20.8K | 1.37M | Jul 2017 – Aug 2026 |
| Old Ocean Unit G-3-136851 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 20.4K | 1.47M | by Jan 1993 – Apr 2003 |
| Old Ocean Unit G-3-157759 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 19.5K | 1.92M | Jul 1995 – Dec 2007 |
| Armstrong G-14-217303 | Complete Oil & Gas Services, LLC only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 19.5K | 1.03M | Oct 2005 – Mar 2023 |
| Old Ocean Unit G-3-170146 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 19.5K | 4.23M | Aug 1998 – Aug 2003 |
| Old Ocean Unit G-3-235088 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 18.6K | 1.16M | Mar 2008 – Aug 2026 |
| Armstrong G-14-229819 | Zephyr Lone Star Oper Co.,l.l.c. only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 18.5K | 845K | Jul 2007 – Jan 2018 |
| Old Ocean Unit G-3-158667 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 15.7K | 1.42M | May 1995 – Apr 2008 |
| Armstrong G-14-210628 | Complete Oil & Gas Services, LLC only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 15.5K | 823K | Mar 2005 – Mar 2023 |
| Old Ocean Unit G-3-137150 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 14.2K | 1.99M | by Jan 1993 – Apr 1998 |
| Old Ocean Unit G-3-158180 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 14.1K | 592K | Jul 1995 – Jan 2000 |
| Rice Gas Unit G-4-98902 | Remora Operating, LLC only | Donna (Armstrong) | Hidalgo | 1 | 13.8K | 1.12M | Oct 2004 – Aug 2026 |
| Old Ocean Unit G-3-239810 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 13K | 416K | Jul 2008 – Jan 2020 |
| Armstrong G-14-227393 | Zephyr Lone Star Oper Co.,l.l.c. only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 12.9K | 681K | Dec 2006 – Apr 2019 |
| Armstrong, Tobin G-4-208657 | Headington Energy Partners, LLC only | Candelaria (Consolidated) | Kenedy | 1 | 12.4K | 1.62M | May 2004 – Apr 2024 |
| Armstrong OL G-3-157683 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Grimes | 1 | 12.1K | 4.79M | Feb 1996 – Jun 2003 |
| Armstrong G-14-238239 | Zephyr Lone Star Oper Co.,l.l.c. only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 12K | 604K | Nov 2007 – Dec 2016 |
| Old Ocean Unit G-3-152176 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 11.3K | 1.22M | May 1995 – Jan 2004 |
| Old Ocean Unit G-3-134505 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 9.98K | 226K | by Jan 1993 – Aug 2023 |
| Armstrong G-14-120289 | Formation Resour Field Svcs, LLC only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 9.67K | 549K | by Jan 1993 – Oct 2022 |
| Schuster Gas Unit G-4-193290 | Wagner Oil Company only | Donna (Armstrong) | Hidalgo | 1 | 9.56K | 372K | Feb 2003 – Aug 2026 |
| Old Ocean Unit G-3-160005 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 9.41K | 1.26M | Jul 1996 – Jul 2001 |
| Armstrong-Kenedy Gas Unit G-4-282625 | Headington Energy Partners, LLC only | Rita, S.E. (Consolidated) | Kenedy | 1 | 9.04K | 757K | Nov 2017 – Jul 2026 |
| Armstrong G-14-245403 | Zephyr Lone Star Oper Co.,l.l.c. only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 8.83K | 528K | Oct 2008 – Nov 2017 |
| Armstrong G-14-250874 | Zephyr Lone Star Oper Co.,l.l.c. only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 8.11K | 572K | May 2009 – Mar 2019 |