| Nueces Bay State Tract 688 #542-409-32948 | Energy Twenty Operating LLC | San PatricioNueces Bay Deep Consolidated | PluggedGas | 11,900 | Aug 3, 2018 | 2 | Jan 2020 |
| Mayo-Owen G.U. #742-409-33050 | Energy Twenty Operating LLC | San PatricioWhite Point East (Consolidated) | PluggedGas | 13,000 | Jul 27, 2015 | 1 | Jun 2019 |
| Powell #142-361-30960 | Energy Twenty Operating LLC | OrangeWildcat | Temporarily abandonedGas | 9,132 | Aug 15, 2014 | 2 | — |
| Nueces Bay State Tract 688 #442-409-32916 | Energy Twenty Operating LLC | San PatricioNueces Bay Deep Consolidated | PluggedGas | 13,000 | Nov 7, 2013 | 2 | Apr 2013 |
| State Tract 706 #242-355-33954 | Energy Twenty Operating LLC | NuecesWildcat | Temporarily abandonedGas | 16,450 | Jan 17, 2013 | 2 | — |
| Nueces Bay St 688 #342-409-32900 | Energy Twenty Operating LLC | San PatricioNueces Bay W. (8500) | PluggedGas | 12,100 | May 12, 2011 | 2 | Oct 2011 |
| State Tract 746A/750A GU #1HHZ42-355-34000 | Energy Twenty Operating LLC | NuecesTule Lake (Frio Consolidated) | Temporarily abandonedGas | 12,736 | Jul 9, 2010 | 3 | Mar 2016 |
| Emily Langham a #20ST42-407-30711 | Energy Twenty Operating LLC | San JacintoUrbana (Wilcox Consolidated) | ActiveGas | 12,500 | Jun 7, 2010 | 3 | Nov 2017 |
| Emily Langham a #1642-407-30708 | Energy Twenty Operating LLC | San JacintoUrbana (Wilcox Consolidated) | ActiveGas | 11,659 | Mar 25, 2010 | 1 | Jul 2018 |
| Emily Langham a #1742-407-30704 | Energy Twenty Operating LLC | San JacintoUrbana (Wilcox Consolidated) | Temporarily abandonedGas | 11,640 | Mar 12, 2010 | 1 | Sep 2016 |
| State Tract 690/746 & 750 GU #4ST42-409-32921 | Energy Twenty Operating LLC | San PatricioNueces Bay Deep Consolidated | PluggedGas | 13,200 | Feb 25, 2010 | 2 | Feb 2014 |
| Emily Langham a #1542-407-30703 | Energy Twenty Operating LLC | San JacintoUrbana (Wilcox Consolidated) | ActiveGas | 11,640 | Feb 18, 2010 | 2 | Jan 2020 |
| Mayo-Koonce GU #342-409-32729 | Energy Twenty Operating LLC | San PatricioWhite Point East (Consolidated) | Temporarily abandonedGas | 12,330 | Aug 27, 2009 | 2 | Jun 2019 |
| State Tract 690/746 & 750 GU #342-355-33942 | Energy Twenty Operating LLC | NuecesTule Lake (Frio Consolidated) | Temporarily abandonedGas | 14,649 | Jan 7, 2009 | 1 | Jan 2017 |
| State Tract 689 #142-409-32894 | Energy Twenty Operating LLC | San PatricioNueces Bay Deep Consolidated | ActiveGas | 14,000 | Aug 7, 2008 | 1 | Oct 2019 |
| Langham Emily a #1242-407-30660 | Energy Twenty Operating LLC | San JacintoUrbana (Wilcox Consolidated) | ActiveGas | 11,600 | Aug 23, 2007 | 1 | Jan 2020 |
| Langham Emily a #1142-407-30658 | Energy Twenty Operating LLC | San JacintoUrbana (Wilcox Consolidated) | ActiveGas | 11,600 | Aug 9, 2007 | 1 | Jan 2020 |
| State Tract 690 746 & 750 GU #142-409-32872 | Energy Twenty Operating LLC | San PatricioNueces Bay Deep Consolidated | PluggedGas | 14,000 | Jul 10, 2007 | 3 | Sep 2012 |
| Perner 42 #142-105-39955 | Energy Twenty Operating LLC | CrockettIngham (Queen) | PluggedGas | 2,500 | Apr 27, 2006 | 1 | Oct 2018 |
| Perner 42-a- #242-105-39956 | Energy Twenty Operating LLC | CrockettIngham (Queen) | PluggedGas | 2,500 | Apr 27, 2006 | 1 | Nov 2018 |
| Perner 38 #342-105-39957 | Energy Twenty Operating LLC | CrockettIngham (Queen) | PluggedGas | 2,500 | Apr 27, 2006 | 1 | Nov 2018 |
| Perner 38 -B- #442-105-39958 | Energy Twenty Operating LLC | CrockettIngham (Queen) | PluggedGas | 2,500 | Apr 27, 2006 | 1 | Nov 2018 |
| Mayo-Owen GU #5T42-409-32730 | Energy Twenty Operating LLC | San PatricioWhite Point East (Consolidated) | Temporarily abandonedGas | 12,410 | Aug 8, 2005 | 5 | Jun 2015 |
| Langham Emily -B- #542-407-30594 | Energy Twenty Operating LLC | San JacintoUrbana (Wilcox Consolidated) | Temporarily abandonedGas | 11,400 | Sep 6, 2002 | 1 | Aug 2015 |
| Langham Emily a #742-407-30575 | Energy Twenty Operating LLC | San JacintoUrbana (Wilcox Consolidated) | ActiveGas | 11,300 | Feb 6, 2001 | 1 | Jan 2020 |
| Langham Emily a #642-407-30551 | Energy Twenty Operating LLC | San JacintoUrbana (Wilcox Consolidated) | ActiveGas | 11,351 | Nov 2, 1994 | 1 | Jan 2020 |
| Langham Emily -B- #342-407-30053 | Energy Twenty Operating LLC | San JacintoUrbana (Wilcox Consolidated) | Temporarily abandonedGas | 11,414 | Aug 18, 1992 | 5 | Aug 2016 |
| Langham Emily -a- #542-407-30061 | Energy Twenty Operating LLC | San JacintoUrbana (Wilcox Consolidated) | Temporarily abandonedGas | 11,400 | Aug 30, 1988 | 1 | May 2016 |
| Ladd-Carson 47 #142-105-34460 | Energy Twenty Operating LLC | CrockettOzona (Canyon Sand) | PluggedGas | 7,200 | Apr 19, 1983 | 1 | Dec 2018 |
| Ladd-Pierce 2 #142-105-34452 | Energy Twenty Operating LLC | CrockettOzona (Canyon Sand) | PluggedGas | 7,000 | Apr 15, 1983 | 1 | Jan 2019 |
| Ladd - Pierce 1 #142-105-34321 | Energy Twenty Operating LLC | CrockettOzona (Canyon Sand) | PluggedGas | 7,000 | Dec 31, 1982 | 1 | Nov 2018 |
| Winterbotham K #142-235-31629 | Energy Twenty Operating LLC | IrionDove Creek (Canyon -D-) | PluggedOil | 6,900 | Sep 24, 1980 | 1 | Jan 2020 |
| Glenn D. K. a #142-103-31330 | Energy Twenty Operating LLC | CraneAbell (Permian-General) | Temporarily abandonedGas | 3,500 | — | 0 | — |
| Long #542-245-00031 | Energy Twenty Operating LLC | JeffersonNome (V) | Shut inOil | 6,976 | — | 0 | — |
| Long #10 C42-245-00036 | Energy Twenty Operating LLC | JeffersonNome (V) | Shut inOil | 8,000 | — | 0 | — |
| Long #1342-245-00038 | Energy Twenty Operating LLC | JeffersonNome (V) | Shut inOil | 8,000 | — | 0 | — |
| Langham Emily a #342-407-30023 | Energy Twenty Operating LLC | San JacintoUrbana (Wilcox Consolidated) | ActiveGas | 11,600 | — | 0 | — |
| Langham Emily -a- #442-407-30066 | Energy Twenty Operating LLC | San JacintoUrbana (Wilcox Consolidated) | Temporarily abandonedGas | 8,853 | — | 0 | — |