| Santa FE Ranch G-4-183767 | Trinity River Energy Oper, LLC only | Tom East (13,800) | Brooks | 1 | 0 | 22.4M | Jun 2001 – Feb 2017 |
| Santa FE Ranch G-4-185501 | Wagner Oil Company only | Tom East (13,800) | Brooks | 1 | 0 | 21.5M | Jul 2001 – Jul 2026 |
| Santa FE Ranch G-4-185707 | Wagner Oil Company only | Tom East (13,800) | Brooks | 1 | 0 | 27.2M | Sep 2001 – Jul 2026 |
| Santa FE Ranch G-4-185874 | Legend Natural Gas IV, LP only | Tom East (13,800) | Brooks | 1 | 0 | 5.89M | Sep 2001 – Jan 2012 |
| Santa FE Ranch G-4-186882 | Wagner Oil Company only | Tom East (13,800) | Brooks | 1 | 0 | 12.6M | Oct 2001 – Jul 2026 |
| Santa FE Ranch G-4-187144 | Trinity River Energy Oper, LLC only | Tom East (13,800) | Brooks | 1 | 0 | 2.29M | Dec 2001 – Jan 2017 |
| Santa FE Ranch G-4-187145 | Wagner Oil Company only | Tom East (13,800) | Brooks | 1 | 0 | 12.4M | Dec 2001 – Jul 2026 |
| Santa FE Ranch G-4-187275 | Wagner Oil Company only | Tom East (13,800) | Brooks | 1 | 0 | 18.9M | Dec 2001 – Jul 2026 |
| Santa FE Ranch G-4-187481 | Trinity River Energy Oper, LLC only | Tom East (13,800) | Brooks | 1 | 0 | 0 | Dec 2001 – Jan 2017 |
| Santa FE Ranch G-4-187663 | Hughes, Dan A. Company, L.P. only | Tom East (13,800) | Brooks | 1 | 0 | 6.85M | Jan 2002 – Jul 2026 |
| Santa FE Ranch G-4-188336 | Trinity River Energy Oper, LLC only | Tom East (13,800) | Brooks | 1 | 0 | 8.86M | Feb 2002 – Dec 2016 |
| Santa FE Ranch G-4-188337 | Smith Production Inc. only | Tom East (13,800) | Brooks | 1 | 0 | 169K | Nov 2001 – Jul 2010 |
| Santa FE Ranch G-4-188472 | Hughes, Dan A. Company, L.P. only | Tom East (13,800) | Brooks | 1 | 0 | 2.39M | Mar 2002 – Jul 2026 |
| Santa FE Ranch G-4-188650 | Hughes, Dan A. Company, L.P. only | Tom East (13,800) | Brooks | 1 | 0 | 4.01M | Mar 2002 – Jul 2026 |
| Santa FE Ranch G-4-188724 | Wagner Oil Company only | Tom East (13,800) | Brooks | 1 | 0 | 2.9M | Mar 2002 – Jul 2026 |
| Santa FE Ranch G-4-188728 | Wagner Oil Company only | Tom East (13,800) | Brooks | 1 | 0 | 10.9M | Feb 2002 – Jul 2026 |
| Santa FE Ranch G-4-189378 | Wagner Oil Company only | Tom East (13,800) | Brooks | 1 | 0 | 6.04M | Mar 2002 – Jul 2026 |
| Santa FE Ranch G-4-189385 | Legend Natural Gas IV, LP only | Tom East (13,800) | Brooks | 1 | 0 | 3.94M | Jan 2002 – Feb 2012 |
| Santa FE Ranch G-4-189418 | Trinity River Energy Oper, LLC only | Tom East (13,800) | Brooks | 1 | 0 | 5.88M | Jan 2002 – Dec 2016 |
| Santa FE Ranch G-4-189429 | Trinity River Energy Oper, LLC only | Tom East (13,800) | Brooks | 1 | 0 | 0 | Jan 2002 – Jan 2017 |
| Santa FE Ranch G-4-189845 | Hughes, Dan A. Company, L.P. only | Tom East (13,800) | Brooks | 1 | 0 | 8.27M | May 2002 – Jul 2026 |
| Santa FE Ranch G-4-189976 | Legend Natural Gas IV, LP only | Tom East (13,800) | Brooks | 1 | 0 | 5.58M | Apr 2002 – Feb 2012 |
| Santa FE Ranch G-4-190028 | Hughes, Dan A. Company, L.P. only | Tom East (13,800) | Brooks | 1 | 0 | 3.43M | Jun 2002 – Jan 2023 |
| Santa FE Ranch G-4-190031 | Exxon Mobil Corporation only | Tom East (13,800) | Brooks | 1 | 0 | 794K | Jun 2002 – Jan 2014 |
| Santa FE Ranch G-4-190185 | Smith Production Inc. only | Tom East (13,800) | Brooks | 1 | 0 | 3.17M | May 2002 – Dec 2010 |
| Santa FE Ranch G-4-190284 | Wagner Oil Company only | Tom East (13,800) | Brooks | 1 | 0 | 578K | Jun 2002 – Jul 2026 |
| Santa FE Ranch G-4-190465 | Trinity River Energy Oper, LLC only | Tom East (13,800) | Brooks | 1 | 0 | 1.61M | Jul 2002 – Dec 2016 |
| Santa FE Ranch G-4-190658 | Trinity River Energy Oper, LLC only | Tom East (13,800) | Brooks | 1 | 0 | 3.96M | Apr 2002 – Dec 2016 |
| Santa Fee Ranch G-4-191098 | Exxon Mobil Corporation only | Tom East (13,800) | Brooks | 1 | 0 | 5.66M | Jul 2002 – Feb 2013 |
| Santa FE Ranch G-4-192325 | Hughes, Dan A. Company, L.P. only | Tom East (13,800) | Brooks | 1 | 0 | 13.2M | Oct 2002 – Jul 2026 |
| Santa FE Ranch G-4-192836 | Hughes, Dan A. Company, L.P. only | Tom East (13,800) | Brooks | 1 | 0 | 3.35M | Nov 2002 – Jul 2026 |
| Santa FE Ranch G-4-193814 | Hughes, Dan A. Company, L.P. only | Tom East (13,800) | Brooks | 1 | 0 | 17.2M | Aug 2002 – Jul 2026 |
| Santa FE Ranch G-4-194536 | Hughes, Dan A. Company, L.P. only | Tom East (13,800) | Brooks | 1 | 0 | 13.9M | Nov 2002 – Jul 2026 |
| Santa FE Ranch G-4-194922 | Hughes, Dan A. Company, L.P. only | Tom East (13,800) | Brooks | 1 | 0 | 6.06M | Dec 2002 – Jul 2026 |
| Sante FE Ranch G-4-195178 | Exxon Mobil Corporation only | Tom East (13,800) | Brooks | 1 | 0 | 2.2M | Jan 2003 – Aug 2013 |
| Santa FE Ranch G-4-196214 | Exxon Mobil Corporation only | Tom East (13,800) | Brooks | 1 | 0 | 10.8M | Dec 2002 – Oct 2011 |
| Santa FE Ranch G-4-196252 | Exxon Mobil Corporation only | Tom East (13,800) | Brooks | 1 | 0 | 0 | May 2002 – Dec 2005 |
| Santa FE Ranch G-4-196615 | Hughes, Dan A. Company, L.P. only | Tom East (13,800) | Brooks | 1 | 0 | 4.99M | Jan 2003 – Jul 2026 |
| Santa FE Ranch G-4-196972 | Trinity River Energy Oper, LLC only | Tom East (13,800) | Brooks | 1 | 0 | 30.5K | Jul 2002 – Dec 2017 |
| Santa FE Ranch G-4-199607 | Hughes, Dan A. Company, L.P. only | Tom East (13,800) | Brooks | 1 | 0 | 5.74M | Jan 2004 – Jul 2017 |
| Santa FE Ranch "B" G-4-199821 | Exxon Mobil Corporation only | Tom East (13,800) | Brooks | 1 | 0 | 82.1K | Nov 2003 – Jul 2004 |
| Santa FE Ranch G-4-201230 | Exxon Mobil Corporation only | Tom East (13,800) | Brooks | 1 | 0 | 4.41M | Mar 2004 – Aug 2012 |
| Santa FE Ranch G-4-206601 | Hughes, Dan A. Company, L.P. only | Tom East (13,800) | Brooks | 1 | 0 | 6.17M | Nov 2004 – Jul 2026 |
| Santa FE Ranch G-4-230740 | Abaco Operating, LLC only | Tom East (13,800) | Brooks | 1 | 0 | 161K | Jul 2007 – Feb 2016 |