| Armstrong 16 O-10-42694 | Resolute Natural Res. Co., LLC only | Wolfbone (Trend Area) | Reeves | 1 | 9.66K | 100K | Mar 2012 – Aug 2012 |
| J & S Armstrong State 60-2-6 O-10-43489 | Cimarex Energy Co. only | Ford, West (Wolfcamp) | Culberson | 1 | 9.65K | 521K | Sep 2011 – Dec 2014 |
| Armstrong, E O-10-34679 | Coda Energy, Inc. only | Andrews (Wolfcamp-Penn.) | Andrews | 1 | 9.63K | 12.8K | Oct 1995 – Jun 1996 |
| 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 O-3-23284 | Ernest Operating Company only | Hooker Creek (Navarro A) | Burleson | 1 | 8.99K | 54.6K | Aug 1997 – Aug 2026 |
| Armstrong Unit O-1-6358 | Petro Lions, LLC only | Fairfield | Bexar | 7 | 8.85K | 19 | by Jan 1993 – Aug 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 |
| Strong Gas Unit G-6-236064 | SND Operating, L.L.C. only | Naconiche Creek (Rod.-TP Cons.) | Nacogdoches | 1 | 8.71K | 1.5M | Feb 2008 – Aug 2026 |
| 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 |
| Armstrong G-14-256732 | Complete Oil & Gas Services, LLC only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 8.04K | 521K | Jan 2010 – Nov 2021 |
| Old Ocean Unit O-3-3213 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 32 | 7.96K | 222K | by Jan 1993 – Feb 2008 |
| Armstrong G-14-237684 | Zephyr Lone Star Oper Co.,l.l.c. only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 7.83K | 439K | Mar 2008 – Aug 2017 |
| Armstrong, Tobin "S" O-4-14268 | Headington Energy Partners, LLC only | Candelaria (Consolidated) | Kenedy | 1 | 7.71K | 9.79K | Apr 2025 – Aug 2026 |
| Armstrong O-13-18469 | Mountain Creek Oil Company, Inc. only | Montague County Regular | Montague | 4 | 7.64K | 21 | by Jan 1993 – Aug 2026 |
| Armstrong, Elizabeth -E- O-10-34676 | Coda Energy, Inc. only | Andrews (Wolfcamp-Penn.) | Andrews | 4 | 7.61K | 8.71K | Oct 1995 – Jun 1996 |
| Armstrong O-10-27254 | Sledge Bros. Oil Co. only | Ken Regan (Delaware) | Reeves | 1 | 7.58K | 45.8K | by Jan 1993 – Jan 2007 |
| Armstrong G-6-110933 | Elms Oil Company only | Percy Wheeler (Travis Peak) | Cherokee | 1 | 7.52K | 482K | by Jan 1993 – Jul 2026 |
| Old Ocean Unit G-3-138192 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 7.42K | 2.29M | by Jan 1993 – Sep 2001 |
| Armstrong G-3-153613 | Baker, Brent Oil & Gas, Inc. only | Giddings (Austin Chalk, Gas) | Brazos | 1 | 7.39K | 1.04M | Jan 1995 – Jan 2025 |
| Johnson Foundation O-3-24454 | EOG Resources, Inc. only | Old Ocean (Armstrong) | Matagorda | 1 | 7.34K | 47.5K | Sep 2003 – Apr 2005 |
| Strong, W. C. G-6-105724 | TGNR East Texas II LLC only | Oak Hill (Cotton Valley) | Rusk | 1 | 7.32K | 1.49M | by Jan 1993 – Apr 2015 |
| Strong, S. K. O-6-11286 | Nadel and Gussman, L.L.C. only | Minden, E. (Travis Peak) | Rusk | 1 | 7.27K | 245K | by Jan 1993 – Mar 2006 |
| Old Ocean Unit G-3-7593 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 7.11K | 1.31M | by Jan 1993 – Nov 1998 |
| Armstrong, Iona Faye Gas Unit G-6-98601 | Merit Energy Company only | Oak Hill (Cotton Valley) | Rusk | 1 | 7.02K | 2.77M | by Jan 1993 – Aug 2026 |
| Old Ocean Unit G-3-124841 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Matagorda | 1 | 7.02K | 1.37M | by Jan 1993 – Feb 2004 |
| Armstrong, Iona Faye Gas Unit G-6-129273 | Merit Energy Company only | Oak Hill (Cotton Valley) | Rusk | 1 | 6.98K | 2.39M | by Jan 1993 – Aug 2026 |
| Armstrong O-9-8720 | Endeavor Energy Resources L.P. only | Benedum (Spraberry) | Reagan | 1 | 6.66K | 8.48K | by Jan 1993 – Oct 2001 |
| Knight-Strong Gas Unit G-6-222104 | TGNR East Texas II LLC only | Carthage, SE (CV) | Panola | 1 | 6.58K | 588K | Jul 2006 – Aug 2017 |
| Johnson Foundation G-3-189090 | EOG Resources, Inc. only | Old Ocean (Armstrong) | Matagorda | 1 | 6.55K | 472K | Mar 2002 – Sep 2003 |
| Strong, W.C. G-6-224203 | TGNR East Texas II LLC only | Oak Hill (Cotton Valley) | Rusk | 1 | 6.43K | 1.41M | Dec 2006 – Aug 2026 |
| Armstrong, L. P. O-8-19506 | Cpmak Investments, Inc. only | Cassell (Fry) | Brown | 8 | 6.4K | 5 | by Jan 1993 – Aug 2026 |
| Strong G-6-234768 | Sabine Energy Inc. only | Oak Hill (Cotton Valley) | Rusk | 1 | 6.37K | 1.03M | Oct 2007 – Aug 2026 |
| Armstrong-Armstrong Unit O-3-21550 | Coastal Oil & Gas Corporation only | Giddings (Austin Chalk-3) | Fayette | 1 | 6.36K | 48.5K | by Jan 1993 – Feb 1993 |
| Strong Gas Unit G-6-233766 | SND Operating, L.L.C. only | Naconiche Creek (Rod.-TP Cons.) | Nacogdoches | 1 | 6.22K | 529K | Oct 2007 – Aug 2026 |
| Strong Gas Unit G-6-229736 | SND Operating, L.L.C. only | Naconiche Creek (Cotton Valley) | Nacogdoches | 1 | 6.15K | 396K | Aug 2007 – Aug 2026 |
| Old Ocean Unit G-3-179418 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 6.1K | 397K | Sep 2000 – Jul 2003 |
| Old Ocean Unit G-3-145064 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 5.85K | 255K | Feb 1994 – Oct 1996 |
| Dooley, C. G-8-114714 | Kramer Operating, LLC only | Strong, SW (Congl. D) | Stephens | 1 | 5.63K | 123K | by Jan 1993 – Aug 2026 |
| Buchanan Unit G-4-10123 | Wagner Oil Company only | Donna (Armstrong) | Hidalgo | 1 | 5.54K | 1.71M | by Jan 1993 – Aug 2026 |
| Old Ocean Unit G-3-158178 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 5.42K | 643K | May 1995 – Aug 2003 |
| Armstrong O-13-32610 | FX Energy Operating, LLC only | JMG Mag (Miss) | Jack | 2 | 5.4K | 451K | Jul 2013 – Aug 2023 |
| Old Ocean Unit G-3-74150 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Matagorda | 1 | 5.28K | 526K | by Jan 1993 – Nov 1996 |
| Strong Gas Unit G-6-150244 | TGNR East Texas II LLC only | Oak Hill (Cotton Valley) | Rusk | 1 | 5.05K | 3.4M | May 1994 – Aug 2026 |
| Old Ocean Unit G-3-136135 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 4.98K | 998K | by Jan 1993 – Oct 1997 |
| Armstrong, Tobin G-4-211347 | Headington Energy Partners, LLC only | Candelaria (Consolidated) | Kenedy | 1 | 4.98K | 410K | Feb 2005 – Jul 2024 |
| Old Ocean Unit G-3-131011 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 4.96K | 1.65M | by Jan 1993 – Feb 1998 |
| Strong, J.B. Gas Unit G-6-202399 | SND Operating, L.L.C. only | Naconiche Creek (Rod.-TP Cons.) | Nacogdoches | 1 | 4.92K | 351K | May 2004 – May 2026 |
| Strong, J.B. Gas Unit G-6-231217 | SND Operating, L.L.C. only | Naconiche Creek (Rod.-TP Cons.) | Nacogdoches | 1 | 4.64K | 371K | Aug 2007 – Aug 2026 |