| Hagaman Unit O-3-26647 | Decker Operating Co., L.L.C. | BSR (Sub-Clarksville) | Madison | 1 | 196K | 411K | Oct 2014 – Jul 2026 |
| Sheldon Unit O-3-26251 | Decker Operating Co., L.L.C. | Halliday (Woodbine) | Madison | 1 | 174K | 528K | Jan 2013 – Jul 2026 |
| Andrews Unit O-3-26626 | Decker Operating Co., L.L.C. | Halliday (Woodbine) | Leon | 1 | 139K | 466K | Dec 2013 – Jul 2026 |
| Chapman Ranch "A" G-4-227943 | Decker Operating Co., L.L.C. | Mobil-David (Howell Hight) | Nueces | 1 | 123K | 1.66M | Feb 2007 – Sep 2025 |
| Chapman JO D O-4-13547 | Decker Operating Co., L.L.C. | Chapman Ranch (Upper Frio Cons.) | Nueces | 1 | 102K | 18.9K | Nov 2006 – Jul 2026 |
| Sample G-2-288959 | Decker Operating Co., L.L.C. | Bright Falcon (Yegua 9900) | Jackson | 1 | 77.5K | 4.46M | Jan 2020 – Jul 2026 |
| Chapman, J.O. 38 G-4-164385 | Decker Operating Co., L.L.C. | Mobil-David, W. (Howell Hight) | Nueces | 1 | 64.2K | 972K | May 1997 – Nov 2009 |
| Chapman Ranch G-4-232247 | Decker Operating Co., L.L.C. | Mobil-David (Howell Hight) | Nueces | 1 | 59.1K | 1.47M | Jul 2007 – Apr 2012 |
| Chapman Ranch G-4-235046 | Decker Operating Co., L.L.C. | Mobil-David (Howell Hight) | Nueces | 1 | 56.5K | 849K | Feb 2008 – Jul 2026 |
| Chapman, J. O. G-4-217866 | Decker Operating Co., L.L.C. | Mobil-David (Frio 12,600) | Nueces | 1 | 54K | 283K | Dec 2005 – Oct 2016 |
| Sample G-2-293767 | Decker Operating Co., L.L.C. | Bright Falcon (Yegua 9580) | Jackson | 1 | 46.6K | 1.61M | Oct 2022 – Jul 2026 |
| Chapman Ranch G-4-225042 | Decker Operating Co., L.L.C. | Mobil-David (Howell Hight) | Nueces | 1 | 42.2K | 1.42M | Jan 2007 – Jun 2026 |
| Murchison-Wofford O-5-879 | Decker Operating Co., L.L.C. | La Rue | Henderson | 1 | 34.7K | 72 | by Jan 1993 – Nov 2019 |
| Chapman, J. O. O-4-13553 | Decker Operating Co., L.L.C. | Chapman Ranch (Upper Frio Cons.) | Nueces | 1 | 31.1K | 3.75K | Apr 2009 – Mar 2021 |
| Chapman J. O. O-4-12911 | Decker Operating Co., L.L.C. | Chapman Ranch (5600) | Nueces | 2 | 28.5K | 65K | Dec 1999 – Oct 2006 |
| Chapman, J.O. "C" O-4-13397 | Decker Operating Co., L.L.C. | Chapman Ranch (Catahoula Cons.) | Nueces | 1 | 26.8K | 35.9K | May 2007 – Dec 2015 |
| Chapman Ranch O-4-5608 | Decker Operating Co., L.L.C. | Chapman Ranch, E. (Davis) | Nueces | 5 | 25.7K | 23 | Feb 1993 – Jul 2004 |
| Chapman Ranch -B- O-4-8644 | Decker Operating Co., L.L.C. | Chapman Ranch (5600) | Nueces | 1 | 20.1K | 24 | by Jan 1993 – Oct 2006 |
| Chapman, J. O. O-4-447 | Decker Operating Co., L.L.C. | Chapman Ranch (C- 3) | Nueces | 5 | 19K | 31K | by Jan 1993 – Oct 2006 |
| Porche G-2-177660 | Decker Operating Co., L.L.C. | Bright Falcon (Yegua 9600) | Jackson | 1 | 18.1K | 8.05M | Jun 2000 – Oct 2021 |
| Chapman Ranch "B" G-4-199951 | Decker Operating Co., L.L.C. | Chapman Ranch (9650) | Nueces | 1 | 16.9K | 1.22M | Nov 2003 – Mar 2016 |
| Chapman, J.O. G-4-164942 | Decker Operating Co., L.L.C. | Mobil-David, SW. (Howell Hight) | Nueces | 1 | 14.9K | 1.62M | May 1997 – Dec 2012 |
| Chapman Ranch, J. O. "D" O-4-13389 | Decker Operating Co., L.L.C. | Chapman Ranch (6260) | Nueces | 1 | 14.8K | 2.51K | Jul 2006 – Oct 2006 |
| Chapman J.O. O-4-13423 | Decker Operating Co., L.L.C. | Chapman Ranch (Catahoula Cons.) | Nueces | 9 | 13.5K | 20.7K | Nov 2006 – Dec 2015 |
| Chapman, J. O. O-4-12906 | Decker Operating Co., L.L.C. | Chapman Ranch (6600) | Nueces | 1 | 12.9K | 5.33K | Feb 2000 – Nov 2004 |
| Gaus-Janssen G-2-183151 | Decker Operating Co., L.L.C. | Runge, E. (Hackney) | Karnes | 1 | 11.8K | 653K | Feb 2001 – Mar 2005 |
| Chapman Ranch G-4-235060 | Decker Operating Co., L.L.C. | Mobil-David (Frio 12,600) | Nueces | 1 | 11.1K | 682K | Jan 2008 – Jan 2009 |
| Chapman Ranch G-4-230045 | Decker Operating Co., L.L.C. | Mobil-David (Howell Hight) | Nueces | 1 | 10.6K | 711K | Aug 2007 – Apr 2012 |
| Chapman, J. O. O-4-7598 | Decker Operating Co., L.L.C. | Chapman Ranch (C- 5) | Nueces | 2 | 10.3K | 4.32K | by Jan 1993 – Mar 1996 |
| Chapman Ranch G-4-276142 | Decker Operating Co., L.L.C. | Chapman Ranch (Upper Frio Cons.) | Nueces | 1 | 10.1K | 273K | Jan 2015 – Sep 2016 |
| Chapman Ranch G-4-221355 | Decker Operating Co., L.L.C. | Mobil-David (Howell Hight) | Nueces | 1 | 10.1K | 319K | Apr 2006 – Oct 2013 |
| Chapman Ranch G-4-173989 | Decker Operating Co., L.L.C. | Chapman Ranch, S. (Mass. 4700) | Nueces | 1 | 10.1K | 489K | Apr 1999 – Jul 2002 |
| Chapman, J. O. O-4-12969 | Decker Operating Co., L.L.C. | Chapman Ranch (C-15) | Nueces | 1 | 9.9K | 3.49K | Nov 2000 – Jan 2005 |
| Chapman Ranch "B" G-4-194740 | Decker Operating Co., L.L.C. | Chapman Ranch (9650) | Nueces | 1 | 9.49K | 761K | Apr 2003 – Jun 2007 |
| Chapman Ranch O-4-13500 | Decker Operating Co., L.L.C. | Chapman Ranch (Upper Frio Cons.) | Nueces | 1 | 7.76K | 27.2K | Jun 2008 – May 2013 |
| Kirby Heirs G-5-237244 | Decker Operating Co., L.L.C. | Thomas Lake (Cotton Valley) | Henderson | 1 | 5.69K | 486K | Mar 2008 – Jul 2026 |
| Champman J.O. O-4-13378 | Decker Operating Co., L.L.C. | Chapman Ranch (Upper Frio Cons.) | Nueces | 4 | 5.14K | 15.2K | Nov 2006 – Jan 2012 |
| Chapman, J. O. O-4-8378 | Decker Operating Co., L.L.C. | Chapman Ranch (4780) | Nueces | 2 | 5.08K | 3.46K | Sep 2001 – Oct 2004 |
| Chapman Ranch G-4-234945 | Decker Operating Co., L.L.C. | Mobil-David (Howell Hight) | Nueces | 1 | 3.94K | 132K | Nov 2007 – Oct 2014 |
| Chapman Ranch G-4-261596 | Decker Operating Co., L.L.C. | Chapman Ranch (Catahoula Cons.) | Nueces | 1 | 2.76K | 93.6K | May 2011 – Aug 2019 |
| Gladney Gas Unit G-5-262916 | Decker Operating Co., L.L.C. | Tri-Cities (Cotton Valley) | Henderson | 1 | 2.5K | 700K | Nov 2010 – Jul 2026 |
| Chapman Ranch G-4-247512 | Decker Operating Co., L.L.C. | Chapman Ranch (Upper Frio Cons.) | Nueces | 1 | 2.05K | 26.5K | Oct 2008 – Apr 2012 |
| Chapman, J. O. O-4-8124 | Decker Operating Co., L.L.C. | Chapman Ranch (6800) | Nueces | 1 | 2.04K | 2.17K | Dec 1995 – Jan 1997 |
| Janssen, J. F. G-2-82613 | Decker Operating Co., L.L.C. | Runge, E. (Roeder 10250) | Karnes | 1 | 1.91K | 189K | by Jan 1993 – Sep 2005 |
| Chapman, J. O. O-4-12946 | Decker Operating Co., L.L.C. | Chapman Ranch (Catahoula, Msv,e) | Nueces | 1 | 1.82K | 17.2K | Jun 2000 – Jan 2005 |
| Chapman, J.O. G-4-119922 | Decker Operating Co., L.L.C. | Chapman Ranch (Miocene Cons.) | Nueces | 1 | 1.82K | 78.1K | by Jan 1993 – Jan 2003 |
| Chapman Ranch -B- O-4-13379 | Decker Operating Co., L.L.C. | Chapman Ranch (Upper Frio Cons.) | Nueces | 1 | 1.78K | 0 | Nov 2006 – Oct 2012 |
| Chapman Ranch O-4-13508 | Decker Operating Co., L.L.C. | Chapman Ranch (Catahoula Cons.) | Nueces | 1 | 1.45K | 74.3K | Jun 2008 – Jul 2015 |
| Chapman, J. O. G-4-166735 | Decker Operating Co., L.L.C. | Mobil-David (Anderson) | Nueces | 1 | 1.39K | 151K | Jan 1998 – Mar 2006 |
| Herring Gas Unit G-2-202959 | Decker Operating Co., L.L.C. | Clayton, North (5780 Slick) | Live Oak | 1 | 1.33K | 48.1K | Oct 2003 – Feb 2004 |