| Tidwell Unit #2HHZ42-507-33513 | Etoco L.P. only | Zavala, TXBriscoe Ranch (Eagleford) | ActiveOil | 6,169 | Sep 11, 2023 | — | — |
| Tidwell Unit #1HHZ42-507-33480 | Etoco L.P. only | Zavala, TXBriscoe Ranch (Eagleford) | ActiveOil | 6,235 | Sep 30, 2022 | — | — |
| W. S. Brannon #142-467-31153 | Etoco L.P. only | Van Zandt, TXVan West (Glen Rose) | ActiveOil | 5,600 | Apr 30, 2013 | — | — |
| Davy Crockett #1HHZ42-225-31253 | Etoco, L.P. only | Houston, TX | Drilled | 15,607 | Oct 12, 2012 | — | — |
| Tomahawk #1HHZ42-331-34091 | Etoco L.P. only | Milam, TXGiddings (Buda) | PluggedOil | 5,500 | Dec 29, 2011 | — | — |
| Spitfire Unit #1HHZ42-331-34090 | Etoco L.P. only | Milam, TXGiddings (Buda) | PluggedOil | 5,500 | Dec 27, 2011 | — | — |
| Lightning Unit #1HHZ42-331-34089 | Etoco L.P. only | Milam, TXGiddings (Buda) | PluggedOil | 5,500 | Dec 23, 2011 | — | — |
| Ambrose/Van Riet Unit #142-201-32713 | Etoco L.P. only | Harris, TXYellow Rose (Yegua Y-2) | PluggedGas | 13,000 | Oct 6, 2010 | — | — |
| PBR Properties Unit #142-071-32384 | Etoco L.P. only | Chambers, TXSeabreeze N. (Nodosaria 2ND SD) | PluggedGas | 12,000 | Aug 26, 2009 | — | — |
| Beaty Black Stone a-163 Unit #1HZ42-457-30709 | Etoco, L.P. only | Tyler, TX | Not on schedule | 15,000 | Nov 21, 2008 | — | — |
| Poindexter #1HZ42-457-30720 | Etoco L.P. only | Tyler, TXBrookeland (Austin Chalk 8800) | ActiveGas | 12,514 | Sep 24, 2008 | — | — |
| Courtney Unit #142-457-30703 | Etoco L.P. only | Tyler, TXMichener (Midcox) | PluggedOil | 11,000 | Apr 24, 2008 | — | — |
| Jones Unit #242-201-32623 | Etoco L.P. only | Harris, TXSralla Road (Jackson W.) | PluggedOil | 12,000 | Mar 31, 2008 | — | — |
| Black Stone a-432 Unit #2HZ42-457-30690 | Etoco L.P. only | Tyler, TXBrookeland (Austin Chalk 8800) | ActiveGas | 13,314 | Jan 11, 2008 | — | — |
| Geffert #142-297-34753 | Etoco L.P. only | Live Oak, TXWildcat | PluggedGas | 11,000 | Nov 21, 2007 | — | — |
| Taylor Ira a-637 Unit #2HZ42-457-30679 | Etoco L.P. only | Tyler, TXBrookeland (Austin Chalk 8800) | ActiveGas | 13,226 | Oct 16, 2007 | — | — |
| Clemmons #1HZ42-457-30668 | Etoco L.P. only | Tyler, TXBrookeland (Austin Chalk 8800) | ActiveGas | 17,849 | Jun 5, 2007 | — | — |
| Houston Sam Unit #2ST42-201-32609 | Etoco L.P. only | Harris, TXYellow Rose (Yegua Y-2) | PluggedGas | 12,000 | Apr 16, 2007 | — | — |
| Black Stone a-432 Unit #1HZ42-457-30658 | Etoco L.P. only | Tyler, TXBrookeland (Austin Chalk 8800) | ActiveOil | 13,198 | Jan 8, 2007 | — | — |
| Kaechele Unit #642-015-30922 | Etoco L.P. only | Austin, TXOrange Hill S.(wilcox 11000) | ActiveGas | 11,700 | Oct 3, 2006 | — | — |
| Anderson-Crump #142-347-32373 | Etoco L.P. only | Nacogdoches, TXMartinsville (Travis Peak) | PluggedGas | 11,000 | Aug 31, 2006 | — | — |
| Heard Unit #242-175-33746 | Etoco L.P. only | Goliad, TXMarshall (Middle Wilcox) | PluggedGas | 12,500 | Aug 24, 2006 | — | — |
| Baber #142-071-32342 | Etoco, L.P. only | Chambers, TX | Not on schedule | 11,000 | Aug 22, 2006 | — | — |
| Green W.T. #142-347-32321 | Etoco L.P. only | Nacogdoches, TXMartinsville (Travis Peak) | PluggedGas | 11,900 | Jul 5, 2006 | — | — |
| Wolter #142-409-32832 | Etoco L.P. only | San Patricio, TXMidway S. (Ritchie 11500) | PluggedGas | 14,700 | May 22, 2006 | — | — |
| Ambrose / Van Riet Unit #242-201-32754 | Etoco, L.P. only | Harris, TX | Not on schedule | 13,000 | Mar 2, 2006 | — | — |
| Taylor Ira a-637 Unit #1HZ42-457-30614 | Etoco L.P. only | Tyler, TXBrookeland (Austin Chalk 8800) | ActiveGas | 13,330 | Feb 21, 2006 | — | — |
| Kaechele Charles Unit #242-015-30840 | Etoco L.P. only | Austin, TXOrange Hill S. (Wilcox Stray) | ActiveGas | 11,900 | Jan 17, 2006 | — | — |
| Heard Unit #3R42-175-33871 | Etoco L.P. only | Goliad, TXMarshall (Middle Wilcox) | PluggedGas | 12,500 | Dec 28, 2005 | — | — |
| Plummer Unit #242-175-33864 | Etoco L.P. only | Goliad, TXMarshall (Middle Wilcox) | PluggedGas | 12,500 | Dec 14, 2005 | — | — |
| Kaechele Unit #142-015-30717 | Etoco L.P. only | Austin, TXOrange Hill S. (Wilcox Stray) | ActiveGas | 11,803 | Nov 4, 2005 | — | — |
| Schaer Unit #542-015-30903 | Etoco L.P. only | Austin, TXOrange Hill S. (Wilcox 9500) | PluggedGas | 10,000 | Oct 4, 2005 | — | — |
| Jackson/Peace #1D42-201-32568 | Etoco L.P. only | Harris, TXSralla Road (Yegua) | ActiveInjection | 8,770 | Sep 15, 2005 | — | — |
| Plummer #142-175-33829 | Etoco L.P. only | Goliad, TXMarshall (Middle Wilcox) | PluggedGas | 12,500 | Sep 2, 2005 | — | — |
| Heard Unit #442-175-33819 | Etoco L.P. only | Goliad, TXMarshall (Middle Wilcox) | PluggedGas | 12,500 | Aug 3, 2005 | — | — |
| Whipp #142-175-33803 | Etoco L.P. only | Goliad, TXMarshall (Middle Wilcox) | PluggedGas | 12,500 | Jun 30, 2005 | — | — |
| Merrill #142-015-30892 | Etoco Incorporated only | Austin, TX | Plugged | 12,500 | Mar 18, 2005 | — | — |
| Heard Unit #342-175-33749 | Etoco L.P. only | Goliad, TXMarshall (Middle Wilcox) | PluggedGas | 12,500 | Mar 16, 2005 | — | — |
| Kaechele Unit #542-015-30885 | Etoco L.P. only | Austin, TXOrange Hill S.(wilcox 11000) | ActiveGas | 11,833 | Dec 3, 2004 | — | — |
| Heard #142-175-33666 | Etoco L.P. only | Goliad, TXMarshall (Middle Wilcox) | PluggedGas | 11,500 | Oct 13, 2004 | — | — |
| Destec #2D42-201-32701 | Etoco L.P. only | Harris, TXJacintoport (Yegua) | ActiveInjection | 7,200 | Sep 28, 2004 | — | — |
| Kaechele Charles Unit #342-015-30874 | Etoco L.P. only | Austin, TXOrange Hill S.(wilcox 11000) | ActiveGas | 11,800 | Sep 9, 2004 | — | — |
| Bundick Unit #1D42-201-32682 | Etoco Incorporated only | Harris, TX | Not on schedule | 15,200 | May 18, 2004 | — | — |
| Jesse Bishop Unit #142-201-32550 | Etoco L.P. only | Harris, TXSralla Road (Jackson SW) | ActiveOil | 8,916 | Apr 14, 2004 | — | — |
| Etoco Fee #242-201-32602 | Etoco L.P. only | Harris, TXJacintoport (Yegua) | PluggedGas | 11,000 | Mar 15, 2004 | — | — |
| Schaer Unit #442-015-30859 | Etoco L.P. only | Austin, TXOrange Hill S.(wilcox 11000) | ActiveGas | 11,800 | Mar 8, 2004 | — | — |
| Schaer Unit #342-015-30838 | Etoco L.P. only | Austin, TXOrange Hill S.(wilcox 11000) | PluggedGas | 12,000 | Aug 12, 2003 | — | — |
| Destec #142-201-32349 | Etoco L.P. only | Harris, TXJacintoport (Yegua) | PluggedGas | 10,728 | May 27, 2003 | — | — |
| Schaer Unit #242-015-30833 | Etoco L.P. only | Austin, TXOrange Hill S.(wilcox 11000) | ActiveGas | 11,800 | May 22, 2003 | — | — |
| Marlin #142-157-32219 | Etoco L.P. only | Fort Bend, TXWildcat | PluggedOil | 12,500 | Apr 30, 2003 | — | — |