| Kerr-McGee G-3-230364 | Wagner Oil Company only | Buye (Lower Cook Mtn. 3) | Liberty | 1 | 643K | 4.19M | May 2007 – Apr 2026 |
| Kerr-McGee G-3-222830 | Ballard Exploration Company,inc. only | Buye (Lower Cook Mtn. 3) | Liberty | 1 | 562K | 10.5M | Jul 2006 – Apr 2026 |
| Agro-Dynamics G-3-189844 | Ballard Exploration Company,inc. only | Devers, SW (Cook Mountain) | Liberty | 1 | 389K | 5.81M | Feb 2002 – Nov 2005 |
| Texaco Fee "B" G-3-212211 | Ballard Exploration Company,inc. only | Raywood (East Cook Mountain) | Liberty | 1 | 381K | 7.31M | Oct 2005 – May 2008 |
| Stone 'B' G-3-262652 | Ballard Exploration Company,inc. only | Cypress Pond (Upper Cook MTN) | Liberty | 1 | 380K | 13.9M | May 2011 – Mar 2026 |
| Cook-Kaiser GU G-2-292830 | Hurd Enterprises, Ltd. only | Sawfish (Wilcox 10400) | De Witt | 1 | 365K | 3.97M | Mar 2022 – Apr 2026 |
| Cook, J. E. G-3-138877 | Hilcorp Energy Company only | Redmond Creek (Yegua) | Liberty | 1 | 287K | 2.64M | Jan 1993 – Nov 2015 |
| Hankamer G-3-192620 | Silverbrook Operating II LLC only | Raywood (Cook Mtn. 11200) | Liberty | 1 | 280K | 4.03M | Oct 2002 – Apr 2026 |
| Moore's Bluff 'A' G-3-280619 | Ballard Exploration Company,inc. only | Gum Bayou (Cook Mtn., Lo.) | Liberty | 1 | 270K | 6.52M | Sep 2014 – Apr 2026 |
| Baby Ruth G-3-226692 | Faulconer Energy, LLC only | Rankin (Cook Mtn. IV) | Harris | 1 | 259K | 14.2M | Mar 2007 – Apr 2026 |
| Texaco Fee "B" G-3-187354 | Ballard Exploration Company,inc. only | Raywood (East Cook Mountain) | Liberty | 1 | 257K | 8.32M | Aug 2001 – Jul 2009 |
| Bloxsom et Al G-3-192899 | Western Energy Group, LLC only | Raywood (E. Cook Mtn. 12,140) | Liberty | 1 | 235K | 2.01M | Jan 2003 – Mar 2010 |
| Cooke Ranch G-1-268316 | Verdun Oil & Gas LLC only | Hawkville (Eagleford Shale) | La Salle | 1 | 221K | 3.76M | Mar 2013 – Apr 2026 |
| Raywood Investments G-3-185403 | Ballard Exploration Company,inc. only | Raywood (East Cook Mountain) | Liberty | 1 | 212K | 3.89M | Jun 2001 – Jan 2006 |
| Cooke Ranch L G-1-283829 | Verdun Oil & Gas LLC only | Hawkville (Eagleford Shale) | La Salle | 1 | 185K | 3.51M | Feb 2017 – Apr 2026 |
| Texaco Fee "C" G-3-188558 | Ballard Exploration Company,inc. only | Devers, SW (Cook Mountain) | Liberty | 1 | 172K | 8.51M | Nov 2001 – Mar 2011 |
| Abshier G-3-213831 | Ballard Exploration Company,inc. only | Tank Farm (Lwr. Cook Mtn. 3A) | Liberty | 1 | 171K | 8.7M | Mar 2005 – Jul 2021 |
| Vastar-Duncan "A" G-3-163144 | Magnum Producing, LP only | Egypt (Cook MTN) | Wharton | 1 | 159K | 9.03M | May 1997 – Sep 2004 |
| Levigne G-3-278319 | Ballard Exploration Company,inc. only | Myers Subdiv. (LWR Cook MTN) | Liberty | 1 | 158K | 8.61M | Sep 2014 – Apr 2026 |
| Johnson, F.I. G-4-211504 | Hilcorp Energy Company only | McCook, SE (Vicksburg Deep) | Hidalgo | 1 | 156K | 12.6M | May 2005 – Apr 2026 |
| Cooke, Ethyl P. G.U. 'A' G-1-288200 | Lewis Petro Properties, Inc. only | Eagleville (Eagle Ford-1) | La Salle | 1 | 154K | 1.06M | Jul 2016 – Apr 2026 |
| Cooke Ranch G-1-288818 | Verdun Oil & Gas LLC only | Hawkville (Eagleford Shale) | La Salle | 1 | 148K | 4.04M | Feb 2020 – Apr 2026 |
| Cooke Ranch G-1-288817 | Verdun Oil & Gas LLC only | Hawkville (Eagleford Shale) | La Salle | 1 | 147K | 4.21M | Feb 2020 – Apr 2026 |
| Vallet G-3-283527 | Ballard Exploration Company,inc. only | Needville, NE (10,320 Cook MTN) | Fort Bend | 1 | 145K | 1.71M | Jan 2017 – Jun 2021 |
| Temple Inland "A" G-3-208692 | Ballard Exploration Company,inc. only | Cypress Pond (Upper Cook MTN) | Liberty | 1 | 144K | 4.66M | Jun 2004 – Sep 2021 |
| Raywood Investments G-3-227054 | Ballard Exploration Company,inc. only | Devers, NW. (Lower Cook Mtn. 1) | Liberty | 1 | 142K | 881K | Mar 2006 – Jul 2008 |
| RDH Farms G-3-231762 | Ballard Exploration Company,inc. only | Devers, SW (Cook Mountain) | Liberty | 1 | 140K | 5.24M | Aug 2007 – Mar 2026 |
| Cooke Ranch G-1-270532 | Verdun Oil & Gas LLC only | Hawkville (Eagleford Shale) | La Salle | 1 | 139K | 3.07M | Apr 2013 – Mar 2026 |
| Cooke Ranch G-1-299262 | Verdun Oil & Gas LLC only | Hawkville (Eagleford Shale) | La Salle | 1 | 130K | 1.9M | Sep 2025 – Apr 2026 |
| Cooke Ranch G-1-276679 | Verdun Oil & Gas LLC only | Hawkville (Eagleford Shale) | La Salle | 1 | 128K | 2.48M | Feb 2016 – Apr 2026 |
| Cooke Ranch G-1-266323 | Verdun Oil & Gas LLC only | Hawkville (Eagleford Shale) | La Salle | 1 | 125K | 2.33M | Oct 2012 – Apr 2026 |
| Duncan G-3-167982 | Faulconer, Vernon E., Inc. only | Egypt, N. (Cook MTN RA) | Wharton | 1 | 125K | 6.61M | Mar 1998 – May 2013 |
| Johnson, C. G. Gas Unit G-4-141357 | Merit Energy Company only | McCook, SE. (LWR Vicksburg Cons) | Hidalgo | 1 | 125K | 9.87M | Jan 1993 – Apr 2026 |
| Cooke Ranch G-1-268317 | Verdun Oil & Gas LLC only | Hawkville (Eagleford Shale) | La Salle | 1 | 124K | 1.93M | Mar 2013 – Apr 2026 |
| Cooke Ranch G-1-299263 | Verdun Oil & Gas LLC only | Hawkville (Eagleford Shale) | La Salle | 1 | 122K | 1.91M | Sep 2025 – Apr 2026 |
| Vastar-Duncan "D" G-3-172021 | Faulconer, Vernon E., Inc. only | Egypt (Cook MTN) | Wharton | 1 | 118K | 10.4M | Jan 1999 – Apr 2016 |
| Riet, Van G-3-195921 | Brammer Engineering, Inc. only | Rankin (Cook Mtn. IV) | Harris | 1 | 116K | 8.14M | Feb 2003 – May 2010 |
| Cooke Ranch G-1-287641 | Verdun Oil & Gas LLC only | Hawkville (Eagleford Shale) | La Salle | 1 | 116K | 2.3M | Jun 2019 – Apr 2026 |
| Cooke Ranch G-1-288960 | Verdun Oil & Gas LLC only | Hawkville (Eagleford Shale) | La Salle | 1 | 112K | 3.48M | Feb 2020 – Apr 2026 |
| Kasparek et Al G-3-208424 | Oblaen Resources LLC only | Needville, NE (10,320 Cook MTN) | Fort Bend | 1 | 112K | 2.33M | Jan 2005 – Oct 2017 |
| Cooke Ranch G-1-269293 | Verdun Oil & Gas LLC only | Hawkville (Eagleford Shale) | La Salle | 1 | 109K | 1.57M | Oct 2012 – Apr 2026 |
| Cooke Ranch G-1-287644 | Verdun Oil & Gas LLC only | Hawkville (Eagleford Shale) | La Salle | 1 | 108K | 2.18M | Jun 2019 – Apr 2026 |
| Duncan G-3-164835 | Faulconer, Vernon E., Inc. only | Egypt, N. (Cook Mtn.) | Wharton | 1 | 107K | 6.97M | Mar 1997 – Jul 2008 |
| Agro-Dynamics G-3-221506 | Ballard Exploration Company,inc. only | Devers, NW. (Lower Cook Mtn. 1) | Liberty | 1 | 107K | 2.42M | Nov 2005 – Dec 2008 |
| Prospect Company G-3-208397 | Ballard Exploration Company,inc. only | Devers, SW (Cook Mountain) | Liberty | 1 | 104K | 1.09M | Oct 2003 – Nov 2005 |
| Pielop Cooke Unit 1 G-1-260509 | BPX Operating Company only | Hawkville (Eagleford Shale) | La Salle | 1 | 104K | 4.24M | Jun 2011 – Apr 2026 |
| Pielop Cooke Unit 2 G-1-261260 | BPX Operating Company only | Hawkville (Eagleford Shale) | La Salle | 1 | 96.6K | 4.71M | Jul 2011 – Apr 2026 |
| Cooke Ranch G-1-287643 | Verdun Oil & Gas LLC only | Hawkville (Eagleford Shale) | La Salle | 1 | 96.5K | 2.02M | Jun 2019 – Apr 2026 |
| Johnson, F.I. G-4-209129 | Hilcorp Energy Company only | McCook, SE (Vicksburg Deep) | Hidalgo | 1 | 93.3K | 9.41M | Mar 2005 – Apr 2026 |
| Partlow G-3-199887 | Wagner Oil Company only | Liberty, South (Cook Mtn. 3) | Liberty | 1 | 92.1K | 6.54M | Jul 2004 – Apr 2013 |