| Dobie Ranch #142-297-36538 | Paloma Operating LLC only | Live Oak, TXDinero W. (Cook Mountain) | ActiveGas | 6,004 | Oct 31, 2025 | — | — |
| Las Arenas #242-297-36227 | Sue-Ann Operating L.C. only | Live Oak, TXDinero W. (Cook Mountain) | ActiveGas | 6,000 | Jul 30, 2025 | — | — |
| RDH Farms #142-291-32713 | Ballard Exploration Company Inc. only | Liberty, TXDevers SW (Cook Mountain) | ActiveGas | 13,800 | Aug 13, 2021 | — | — |
| Nunan #142-201-32827 | Nordstrand Engineering Inc. only | Harris, TXKaty (Cook Mountain 2) | ActiveGas | 12,005 | Dec 19, 2019 | — | — |
| Daniel #142-291-32939 | Ballard Exploration Company Inc. only | Liberty, TXDevers S. (Cook Mountain) | PluggedGas | 14,100 | Oct 3, 2019 | — | — |
| Weinheimer #142-481-34760 | Mountain V Texas LLC only | Wharton, TXAlwan (Y-250) | ActiveGas | 14,306 | Sep 17, 2019 | — | — |
| Merta Heirs Unit #142-481-35437 | Ricochet Energy Inc. only | Wharton, TXAlwan (Cook Mountain) | ActiveGas | 8,358 | Oct 31, 2018 | — | — |
| Kgfcu #121042-473-31091 | Hilcorp Energy Company only | Waller, TXKaty (Cook Mountain 2) | ActiveGas | 11,325 | Jul 12, 2016 | — | — |
| Kgfcu (Ckfd U B) #540542-473-30294 | Hilcorp Energy Company only | Waller, TXKaty (Combined) | Shut inGas | 11,000 | Feb 11, 2016 | — | — |
| Ralph W Ramsey #142-175-02063 | Abel M.D. Co. only | Goliad, TXA-B-R (Frio 2800) | PluggedGas | 10,000 | Mar 31, 2015 | — | — |
| O.B. Ranch #242-481-35175 | Hilcorp Energy Company only | Wharton, TXRed Bull (Cook Mountain) | PluggedGas | 13,200 | Oct 10, 2014 | — | — |
| Pierce Ranch #a 142-481-35111 | Hilcorp Energy Company only | Wharton, TXRed Bull (Cook Mountain) | Shut inOil | 15,200 | Oct 1, 2014 | — | — |
| Texaco Fee B #142-291-32399 | Ballard Exploration Company Inc. only | Liberty, TXRaywood (East Cook Mountain) | PluggedGas | 14,700 | Nov 1, 2012 | — | — |
| Ideus #142-175-33204 | Coastline Exploration Inc. only | Goliad, TXGottschalt (Cook Mountain) | PluggedOil | 5,300 | Oct 19, 2012 | — | — |
| Highland #142-157-32632 | CML Exploration LLC only | Fort Bend, TXRiver Bend (Cook Mountain 8650) | PluggedOil | 9,000 | Jul 26, 2012 | — | — |
| Cis #142-175-33536 | Chesapeake Operating Inc. only | Goliad, TXAnder (Cook Mountain) | PluggedGas | 10,000 | Apr 18, 2012 | — | — |
| Dennis Reitz #342-175-34074 | Nadsoilco LLC only | Goliad, TXGottschalt (Third Yegua) | PluggedGas | 5,200 | Dec 16, 2011 | — | — |
| O.B. Ranch #142-481-35118 | Hilcorp Energy Company only | Wharton, TXWharton W. (CK MTN 11200) | PluggedOil | 15,500 | Nov 30, 2011 | — | — |
| Myers #142-481-35059 | XOG Operating LLC only | Wharton, TXHungerford S. (Cook Mountain) | PluggedGas | 9,900 | Feb 5, 2010 | — | — |
| Dybala G.U. #142-481-35102 | Dallas Petroleum Group LLC only | Wharton, TXBowmore (Cook Mountain) | PluggedGas | 15,100 | Oct 26, 2009 | — | — |
| Agro-Dynamics Unit #242-291-32521 | Ballard Exploration Company Inc. only | Liberty, TXDevers NW. (Lower Cook Mtn. 1) | PluggedGas | 14,000 | Oct 20, 2009 | — | — |
| Ilse-Miller #2Y42-481-33129 | Faulconer Vernon E. Inc. only | Wharton, TXNew Taiton (Yegua 7550) | PluggedGas | 8,201 | Sep 11, 2009 | — | — |
| Krenek Edward et al #142-481-34702 | TMR Exploration Inc. only | Wharton, TXHungerford S. (Cook Mountain) | PluggedGas | 17,000 | Jun 3, 2009 | — | — |
| Raywood Investments #142-291-32390 | Ballard Exploration Company Inc. only | Liberty, TXDevers NW. (Lower Cook Mtn. 1) | PluggedGas | 15,000 | Nov 26, 2008 | — | — |
| Weinheimer-Grady E. A. Trust #142-481-33501 | Crimson Exploration Oper. Inc. only | Wharton, TXAlwan West (Frio 4630) | PluggedGas | 10,000 | Sep 16, 2008 | — | — |
| Whittaker #142-291-32770 | Avalanche Oil & Gas LLC only | Liberty, TXRaywood S. (Cook Mountain) | Temporarily abandonedGas | 14,322 | Aug 9, 2008 | — | — |
| Heimple -B- #442-291-02048 | Quail Creek Oil Corporation only | Liberty, TXHull | ActiveOil | 7,399 | Jul 31, 2008 | — | — |
| Texaco Fee C #1ST42-291-32407 | Ballard Exploration Company Inc. only | Liberty, TXDevers SW (Cook Mountain) | Temporarily abandonedGas | 13,825 | Mar 18, 2008 | — | — |
| Rust Estate #242-481-34948 | Cico Oil & Gas Company only | Wharton, TXHungerford S. (Cook Mountain) | PluggedGas | 11,500 | Dec 13, 2007 | — | — |
| Barrett W J #542-291-32690 | Hughes Oil Operating LLC only | Liberty, TXHardin SW. (Cook Mountain #1) | Shut inOil | 9,000 | Jan 5, 2007 | — | — |
| Rust Estate #142-481-34881 | Cico Oil & Gas Company only | Wharton, TXHungerford S. (Cook Mountain) | PluggedGas | 11,500 | Jan 4, 2007 | — | — |
| Reitz #142-175-32098 | Cabeza Oil and Gas LLC only | Goliad, TXGottschalt (Luling 7600) | PluggedGas | 8,002 | Nov 2, 2006 | — | — |
| Humphreys #242-291-32556 | Hughes Oil Operating LLC only | Liberty, TXHardin SW. (Cook Mountain #1) | Shut inOil | 9,252 | Sep 6, 2006 | — | — |
| Duncan A93 #542-481-34810 | Hunt Oil Company only | Wharton, TXAlwan (Cook Mountain) | PluggedGas | 16,200 | Aug 1, 2006 | — | — |
| Texaco Fee B #442-291-32674 | Ballard Exploration Company Inc. only | Liberty, TXRaywood (East Cook Mountain) | Temporarily abandonedGas | 14,000 | Jul 27, 2006 | — | — |
| Ladner #142-291-32651 | Gordy Oil Company only | Liberty, TXDevers S. (Cook Mountain) | PluggedGas | 14,100 | Apr 7, 2006 | — | — |
| Prospect Company #142-291-32493 | Ballard Exploration Company Inc. only | Liberty, TXPump Station (LCM-1) | PluggedOil | 14,000 | Mar 13, 2006 | — | — |
| Kujawa Unit #1X42-157-32357 | CML Exploration LLC only | Fort Bend, TXRosenberg W. (Cook Mountain) | PluggedGas | 10,000 | Dec 30, 2005 | — | — |
| Agro-Dynamics #142-291-32414 | Ballard Exploration Company Inc. only | Liberty, TXDevers NW. (Lower Cook Mtn. 1) | PluggedGas | 14,000 | Nov 15, 2005 | — | — |
| Boyt #142-291-32624 | Apache Corporation only | Liberty, TXDevers S. (Cook Mountain) | PluggedGas | 15,000 | Sep 13, 2005 | — | — |
| Texaco Fee B #342-291-32606 | Ballard Exploration Company Inc. only | Liberty, TXRaywood (East Cook Mountain) | PluggedGas | 14,400 | Jul 8, 2005 | — | — |
| Simmons #142-157-32356 | Amrwr LLC only | Fort Bend, TXBarb-Mag SE. (Cook Mountain) | Temporarily abandonedGas | 9,299 | Jun 29, 2005 | — | — |
| Leveridge A. T. #1242-157-32291 | Southeastern Pipe Line Company only | Fort Bend, TXBernard East (Cook Mountain) | PluggedGas | 13,300 | Jul 22, 2004 | — | — |
| McNeill E #142-297-34576 | Double Play Oil & Gas Inc only | Live Oak, TXDinero W. (Cook Mountain) | PluggedGas | 5,950 | Jun 9, 2004 | — | — |
| Vernett McMullen #142-175-33608 | Acock/Anaqua Operating Co. LP only | Goliad, TXAnder (Cook Mountain) | PluggedGas | 6,500 | Jan 22, 2004 | — | — |
| Otto #142-157-32237 | Brayton Operating Corp. only | Fort Bend, TXIndian (Cook Mountain) | PluggedGas | 10,000 | Sep 26, 2003 | — | — |
| Jacobs Matilda #1B42-175-00671 | Marwell Petroleum Ltd Partnrship only | Goliad, TXMission Valley W(cook Mountain) | PluggedOil | 5,775 | Sep 17, 2003 | — | — |
| Worley #242-175-33460 | CLR Secondary Recovery LLC only | Goliad, TXBrandt (Pettus-CM Cons.) | Shut inOil | 5,300 | Sep 24, 2002 | — | — |
| Franklin #142-175-33442 | Lightning Oil Company only | Goliad, TXBig Oak N. (Cook Mountain) | PluggedGas | 5,600 | Jul 2, 2002 | — | — |
| Dyer E Unit #642-157-32184 | CML Exploration LLC only | Fort Bend, TXRosenberg W. (Cook Mountain) | PluggedGas | 10,000 | Jun 5, 2002 | — | — |