| Howard 33-22 G-10-300114 | Apache Corporation only | Phantom (Wolfcamp) | Ward | 1 | 196K | 370K | Mar 2014 – Apr 2026 |
| Howard, V. B. G-2-169750 | De la Torre Oil & Gas, Inc only | Oakville (Mid Wilcox 9200) | Live Oak | 1 | 65.1K | 1.88M | Apr 1998 – Aug 2025 |
| Howard No. 1 GU G-3-152680 | Timberwolf Energy, Inc. only | Angleton, S. (F-4 FB-AZ) | Brazoria | 1 | 46.6K | 5.38M | Dec 1994 – Mar 2026 |
| Howard Unit G-13-272291 | Scout Energy Management LLC only | Newark, East (Barnett Shale) | Montague | 1 | 38.7K | 581K | Dec 2013 – Apr 2026 |
| Howard No. 2 GU G-3-154623 | Timberwolf Energy, Inc. only | Angleton, S. (F-4 FB-AZ) | Brazoria | 1 | 30.8K | 4.11M | May 1995 – Mar 2026 |
| Hodge, Howard J. G-10-44232 | XTO Energy Inc. only | Waha (Mississippian) | Pecos | 1 | 29.8K | 10.3M | Jan 1993 – Jun 2021 |
| Herman, A. S. G-3-168802 | Howard Exploration, Inc. only | Blessing, NE. (F-26) | Matagorda | 1 | 26.6K | 1.7M | May 1998 – May 2014 |
| Flake, Henry Jr. Gas Unit G-3-87467 | Howard Exploration, Inc. only | Hitchcock, NE. (Frio 9100) | Galveston | 1 | 25.3K | 487K | Jan 1993 – Mar 1997 |
| Howard Unit G-13-273752 | EOG Resources, Inc. only | Newark, East (Barnett Shale) | Montague | 1 | 25K | 524K | Dec 2010 – Jun 2021 |
| Hodge, J. Howard B G-10-171640 | XTO Energy Inc. only | Waha (Montoya FB-2) | Reeves | 1 | 25K | 9.72M | Dec 1998 – Jan 2026 |
| Howard Unit G-6-55324 | Uosi Operating, Inc. only | Palestine (Pettit 10,390) | Anderson | 1 | 24.6K | 611K | Jan 1993 – Jan 2016 |
| Hodge, J. Howard G-10-190090 | XTO Energy Inc. only | Waha (Montoya) | Reeves | 1 | 22.4K | 15M | Feb 2002 – Mar 2026 |
| Hodge, J. Howard B G-10-256760 | XTO Energy Inc. only | Waha (Montoya FB-2) | Reeves | 1 | 22.3K | 5.27M | Jan 2010 – Mar 2026 |
| Howard a Unit G-13-275330 | EOG Resources, Inc. only | Newark, East (Barnett Shale) | Montague | 1 | 19.2K | 1.07M | Apr 2011 – Apr 2026 |
| University Land 20-30 G-9-153852 | DJH Oil & Gas LLC only | Howards Creek (Canyon) | Crockett | 1 | 19.1K | 673K | Feb 1995 – Oct 2021 |
| Howard "A" G-6-197737 | Sheridan Production Co III, LLC only | Stockman (Travis Peak) | Shelby | 1 | 18.9K | 1.1M | Aug 2003 – Apr 2026 |
| Hodge, J. Howard G-10-113077 | XTO Energy Inc. only | Waha (Montoya FB-2) | Pecos | 1 | 16.9K | 14.2M | Jan 1993 – Mar 2026 |
| Wilson Family Trust G-3-176900 | Howard Exploration, Inc. only | Hillje (Frio 5998) | Wharton | 1 | 15.6K | 1.64M | Apr 2000 – Oct 2016 |
| Hodge, J. Howard G-10-261744 | Breitburn Operating L.P. only | Waha (Montoya FB-2) | Pecos | 1 | 15.1K | 6.14M | Jun 2010 – Oct 2024 |
| Howard a Unit G-13-274376 | EOG Resources, Inc. only | Newark, East (Barnett Shale) | Montague | 1 | 15.1K | 1.46M | Apr 2011 – Apr 2026 |
| University Land 19-30 G-9-193443 | DJH Oil & Gas LLC only | Howards Creek (Canyon) | Crockett | 1 | 14.1K | 419K | Nov 2002 – Oct 2021 |
| Howard Unit G-13-273803 | EOG Resources, Inc. only | Newark, East (Barnett Shale) | Montague | 1 | 13.4K | 570K | Dec 2010 – Apr 2026 |
| Howard G-3-262672 | Amrwr, LLC only | Giddings (Buda) | Grimes | 1 | 13.1K | 864K | Feb 2011 – Dec 2013 |
| Howard Gas Unit G-13-256016 | BKV Barnett II, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 12.8K | 1.25M | Jul 2010 – Apr 2026 |
| Enis-Howard (AW) G-13-284918 | BKV Barnett II, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 12.6K | 2.37M | Apr 2018 – Apr 2026 |
| Houston "M" G-3-150204 | Howard Exploration, Inc. only | Chocolate Bayou, N. (Schenck) | Brazoria | 1 | 12.5K | 228K | Jun 1994 – Jun 1996 |
| Chalk Estate G-10-153661 | Citation Oil & Gas Corp. only | Howard-Glasscock (Wolfcamp 7400) | Howard | 1 | 11.8K | 328K | Jan 1995 – Apr 2026 |
| Al-SW Btlt G-4-160388 | Howard Exploration, Inc. only | Amore (Vicksburg 5500) | Starr | 1 | 11K | 1.31M | Oct 1996 – Jun 2013 |
| University 20-30A G-9-156464 | DJH Oil & Gas LLC only | Howards Creek (Canyon) | Crockett | 1 | 10.8K | 385K | Oct 1995 – Oct 2021 |
| Hampton, Howard G-6-154535 | Basa Resources, Inc. only | White Oak (Cotton Valley Sand) | Gregg | 1 | 10.4K | 1.26M | Apr 1995 – Dec 2024 |
| Henderson Trust G-9-144782 | Apache Corporation only | Howards Creek (Canyon) | Crockett | 1 | 10.2K | 1.41M | Apr 1993 – Sep 2025 |
| Enis-Howard (AW) G-13-284919 | BKV Barnett II, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 9.35K | 2.22M | Apr 2018 – Apr 2026 |
| University Land 31-30 G-9-162484 | DJH Oil & Gas LLC only | Howards Creek (Canyon) | Crockett | 1 | 8.92K | 334K | Jan 1997 – Oct 2021 |
| University 18-33 Gas Unit North G-9-161615 | DJH Oil & Gas LLC only | Howards Creek (Canyon) | Crockett | 1 | 8.91K | 611K | Dec 1996 – Oct 2021 |
| Howard Unit G-13-254338 | Eagleridge Operating, LLC only | Newark, East (Barnett Shale) | Hood | 1 | 8.9K | 2.56M | Nov 2009 – Apr 2026 |
| University Land 30-30 G-9-140194 | DJH Oil & Gas LLC only | Howards Creek (Canyon) | Crockett | 1 | 7.4K | 851K | Jan 1993 – Oct 2021 |
| Hampton, Howard G-6-154859 | Chevron U. S. A. Inc. only | White Oak (Cotton Valley Sand) | Gregg | 1 | 7.29K | 834K | Apr 1995 – May 2009 |
| Houston "M" G-3-138425 | Howard Exploration, Inc. only | Chocolate Bayou, N. (Schenck) | Brazoria | 1 | 6.81K | 255K | Jan 1993 – Jun 1994 |
| Howard G-3-262163 | Allied Operating Texas, LLC only | Giddings (Buda) | Grimes | 1 | 6.78K | 496K | Oct 2010 – Feb 2014 |
| Howard a-Ellis Est (Alloc) G-6-284782 | Diversified Production LLC only | Oak Hill (Cotton Valley) | Rusk | 1 | 6.53K | 3.62M | May 2018 – Apr 2026 |
| University Land 30-30 G-9-153356 | DJH Oil & Gas LLC only | Howards Creek (Canyon) | Crockett | 1 | 6.38K | 592K | Feb 1995 – Jan 2020 |
| University 18-33 Gas Unit North G-9-140956 | DJH Oil & Gas LLC only | Howards Creek (Canyon) | Crockett | 1 | 5.73K | 815K | Jan 1993 – Jan 2022 |
| University Land 20-30 G-9-140782 | DJH Oil & Gas LLC only | Howards Creek (Canyon) | Crockett | 1 | 5.7K | 669K | Jan 1993 – Oct 2021 |
| University Land 30-30A G-9-140197 | DJH Oil & Gas LLC only | Howards Creek (Canyon) | Crockett | 1 | 5.66K | 776K | Jan 1993 – Oct 2021 |
| Hampton, Howard G-6-154150 | Diversified Production LLC only | White Oak (Cotton Valley Sand) | Upshur | 1 | 5.5K | 1.33M | Mar 1995 – Apr 2026 |
| Henderson Trust "E" G-9-109167 | Exxon Corp. only | Howards Creek (Canyon) | Crockett | 1 | 4.83K | 137K | Jan 1993 – Jan 1997 |
| Grubbs G-3-145820 | Howard Exploration, Inc. only | Chocolate Bayou, N. (9700) | Brazoria | 1 | 4.52K | 285K | Jun 1993 – Mar 1995 |
| Henderson Trust G-9-144781 | Apache Corporation only | Howards Creek (Canyon) | Crockett | 1 | 4.2K | 491K | Mar 1993 – Mar 2026 |
| Hampton, Howard G-6-183864 | Diversified Production LLC only | Glenwood (Cotton Valley) | Upshur | 1 | 4.16K | 809K | Jun 2001 – Apr 2026 |
| University Block 33 17 & 18 G.U. G-9-143883 | DJH Oil & Gas LLC only | Howards Creek (Canyon) | Crockett | 1 | 4.08K | 530K | Jan 1993 – Jan 2022 |