| Cerrito-Matrix Unit F #23HHZ42-479-42628 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | ActiveGas | 5,913 | Jan 3, 2014 | 1 | Aug 2026 |
| Cerrito-Matrix Unit F #22HHZ42-479-42627 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | ActiveGas | 5,916 | Dec 30, 2013 | 1 | Apr 2021 |
| Cerrito-Matrix Unit F #24HHZ42-479-42629 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | ActiveGas | 5,888 | Dec 30, 2013 | 1 | Aug 2026 |
| Cerrito State #9HHZ42-479-42505 | Escondido Resources Oper Co LLC | WebbHawkville (Eagleford Shale) | ActiveGas | 11,189 | Jul 16, 2013 | 1 | Aug 2026 |
| Gilpin #3HHZ42-479-42356 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | ActiveGas | 6,150 | Mar 28, 2013 | 2 | Aug 2026 |
| Gilpin #2HHZ42-479-42355 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | ActiveGas | 5,993 | Mar 27, 2013 | 2 | Aug 2026 |
| Matrix Land Co. #30HHZ42-479-42162 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | ActiveGas | 6,148 | Nov 14, 2012 | 2 | Aug 2026 |
| Cerrito State #29HHZ42-479-41706 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | ActiveGas | 5,975 | Feb 10, 2012 | 2 | Aug 2026 |
| Cerrito-Sanchez a State Unit #28HHZ42-479-41708 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | ActiveGas | 5,732 | Feb 8, 2012 | 3 | Aug 2026 |
| Matrix Cerrito Unit C #21HHZ42-479-41546 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | ActiveGas | 5,909 | Sep 26, 2011 | 1 | Aug 2026 |
| Cerrito-Sanchez B State Unit #20HHZ42-479-41491 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | ActiveGas | 5,796 | Sep 13, 2011 | 2 | Aug 2026 |
| Cerrito-Sanchez State Unit #19HHZ42-479-41446 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | ActiveGas | 5,961 | Aug 22, 2011 | 3 | Aug 2026 |
| Matrix Cerrito Unit B #18HHZ42-479-41303 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | ActiveGas | 10,160 | May 16, 2011 | 2 | Aug 2026 |
| Matrix Cerrito Unit a #17HHZ42-479-41302 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | ActiveGas | 5,839 | May 13, 2011 | 2 | Aug 2026 |
| Cerrito I #16HHZ42-479-41258 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | ActiveGas | 7,939 | Apr 12, 2011 | 2 | Aug 2026 |
| Gilpin #1HHZ42-479-41207 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | ActiveGas | 6,051 | Mar 2, 2011 | 2 | Aug 2026 |
| Cerrito #15HHZ42-479-41188 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | ActiveGas | 6,302 | Feb 9, 2011 | 1 | Aug 2026 |
| Cerrito #14HHZ42-479-41186 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | ActiveGas | 6,086 | Feb 3, 2011 | 1 | Aug 2026 |
| Cerrito #2C42-479-40598 | Escondido Resources Oper Co LLC | WebbOwen (3700) | ActiveGas | 8,200 | Jan 21, 2011 | 2 | Sep 2021 |
| Cerrito #12HHZ42-479-41161 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | ActiveGas | 5,848 | Jan 13, 2011 | 1 | Aug 2026 |
| Cerrito #13HHZ42-479-41162 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | ActiveGas | 6,045 | Jan 13, 2011 | 1 | Aug 2026 |
| Cerrito a State Unit #11HHZ42-479-41101 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | ActiveGas | 5,921 | Nov 1, 2010 | 1 | Aug 2026 |
| Cerrito C State #10HZ42-479-40890 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | Temporarily abandonedGas | 9,677 | Apr 27, 2010 | 3 | Aug 2026 |
| Springer Ranch NO 2 #2HZ42-283-32263 | Escondido Resources Oper Co LLC | La SalleHawkville (Eagleford Shale) | ActiveGas | 11,326 | Apr 21, 2010 | 1 | Aug 2026 |
| Santa Cruz #2HZ42-479-40881 | Escondido Resources Oper Co LLC | WebbHawkville (Eagleford Shale) | PluggedGas | 12,000 | Apr 20, 2010 | 1 | Apr 2020 |
| Cerrito B State Unit #7HHZ42-479-40824 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | ActiveGas | 5,862 | Feb 24, 2010 | 2 | Aug 2026 |
| Cerrito #8HHZ42-479-40825 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | ActiveGas | 6,078 | Feb 24, 2010 | 2 | Aug 2026 |
| Cerrito State Unit #6HHZ42-479-40802 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | ActiveGas | 5,759 | Feb 11, 2010 | 1 | Aug 2026 |
| Cerrito #5HHZ42-479-40777 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | ActiveGas | 5,700 | Jan 22, 2010 | 2 | Aug 2026 |
| Cerrito #4HZ42-479-40737 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | ActiveGas | 8,500 | Dec 15, 2009 | 3 | Aug 2026 |
| Santa Cruz #1HZ42-479-40718 | Escondido Resources Oper Co LLC | WebbHawkville (Eagleford Shale) | PluggedGas | 12,000 | Nov 13, 2009 | 1 | Dec 2019 |
| Matrix Land Co. #12HHZ42-479-40704 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | ActiveGas | 6,099 | Oct 30, 2009 | 2 | Aug 2026 |
| Springer Ranch #1HZ42-283-32190 | Escondido Resources Oper Co LLC | La SalleHawkville (Eagleford Shale) | PluggedGas | 11,500 | Jun 26, 2009 | 3 | Nov 2016 |
| Cerrito Matrix E #142-479-40597 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | ActiveGas | 8,600 | Jun 9, 2009 | 2 | Aug 2026 |
| Cerrito #342-479-40599 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | ActiveGas | 8,330 | Jun 9, 2009 | 3 | Aug 2026 |
| Storey NO 9 #942-283-32160 | Escondido Resources Oper Co LLC | La SalleTres Encanto (Escondido) | PluggedOil | 9,000 | Aug 26, 2008 | 1 | Jul 2024 |
| Matrix Land Co. #642-479-31291 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | PluggedGas | 7,743 | Dec 14, 1992 | 1 | Aug 2017 |
| Matrix Land Co. #1042-479-35090 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | ActiveGas | 6,200 | Sep 12, 1990 | 1 | Aug 2026 |
| Matrix Land Co. #242-479-30755 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | PluggedGas | — | — | 0 | — |
| Cerrito Matrix H #342-479-31119 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | ActiveGas | 6,150 | — | 0 | — |
| Cerrito Matrix E #442-479-31136 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | Temporarily abandonedGas | 6,200 | — | 0 | — |
| Matrix Land Co. #542-479-31137 | Escondido Resources Oper Co LLC | WebbOwen (Olmos) | ActiveGas | 6,150 | — | 0 | — |