| Tipi Chapman 34-163 G-10-299993 | Apache Corporation only | Phantom (Wolfcamp) | Ward | 1 | 299K | 570K | Dec 2013 – Apr 2026 |
| Tipi Chapman 34-163 G-10-299862 | Apache Corporation only | Phantom (Wolfcamp) | Ward | 1 | 298K | 778K | Aug 2013 – Apr 2026 |
| Taylor, Ira a-637 Unit G-6-233666 | Etoco, L.P. only | Brookeland (Austin Chalk, 8800) | Tyler | 1 | 291K | 1.06M | Nov 2006 – Apr 2026 |
| Tipi Chapman 34-163 G-10-299860 | Apache Corporation only | Phantom (Wolfcamp) | Ward | 1 | 273K | 533K | Aug 2013 – Apr 2026 |
| Bates 1-63 Lov Unit G-10-287376 | Pdeh LLC only | Phantom (Wolfcamp) | Loving | 1 | 242K | 556K | Jul 2013 – Apr 2026 |
| UL Willow 383633-16 G-10-293516 | WPX Energy Permian, LLC only | Phantom (Wolfcamp) | Ward | 1 | 241K | 416K | Aug 2019 – Jan 2026 |
| Taylor, Ira a-637 Unit G-6-242706 | Etoco, L.P. only | Brookeland (Austin Chalk, 8800) | Tyler | 1 | 208K | 714K | Mar 2008 – Apr 2026 |
| Channelview Townsite G-3-168260 | Ballard Exploration Company,inc. only | Canadian Hunter (Yegua 10,630) | Harris | 1 | 186K | 7.66M | Jan 1998 – Nov 2016 |
| UL Willow 383633-16 G-10-293501 | WPX Energy Permian, LLC only | Phantom (Wolfcamp) | Ward | 1 | 180K | 428K | Aug 2019 – Dec 2022 |
| Calcote 63 G-14-276580 | Formentera Operations LLC only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 167K | 2.91M | Oct 2014 – Apr 2026 |
| May Wright '163' G-14-282700 | Mewbourne Oil Company only | Lipscomb, S.E. (Cleveland) | Lipscomb | 1 | 133K | 1.12M | May 2014 – Apr 2026 |
| Channelview Townsite "C" G-3-173477 | Ballard Exploration Company,inc. only | Canadian Hunter (Yegua 10,630) | Harris | 1 | 129K | 4.7M | Jun 1999 – Aug 2024 |
| State Lease 108878 G-3-262026 | Ballard Exploration Company,inc. only | Canadian Hunter (Yegua 10,630) | Harris | 1 | 99.7K | 5.41M | Jan 2011 – Mar 2026 |
| Calcote 63 G-14-276378 | Formentera Operations LLC only | Mills Ranch (Granite Wash Cons.) | Wheeler | 1 | 93.1K | 588K | Jul 2014 – Apr 2026 |
| May Wright '163' G-14-282748 | Mewbourne Oil Company only | Lipscomb, S.E. (Cleveland) | Lipscomb | 1 | 92.6K | 617K | Dec 2014 – Apr 2026 |
| State Tract 631L G-2-226392 | XTO Offshore Inc. only | MI 631L (Rob. L21) | Matgrda IS-LB | 1 | 72.6K | 279K | Nov 2006 – Nov 2009 |
| Moore 63 G-14-261764 | Bce-Mach II LLC only | Meg (Granite Wash) | Hemphill | 1 | 66.8K | 2.92M | Mar 2011 – Apr 2026 |
| Tovar West-Lloyd 63 B Unit G-1-267110 | Javelin Energy Partners Mgmt LLC only | Briscoe Ranch (Eagleford) | Maverick | 1 | 64.6K | 946K | Mar 2012 – Apr 2026 |
| Ochoa G-4-215879 | Capital Star Oil & Gas, Inc. only | Chihuahua (6350) | Hidalgo | 1 | 60.8K | 322K | Jul 2006 – Apr 2026 |
| Calcote 63 G-14-276385 | Formentera Operations LLC only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 60.1K | 1.48M | Nov 2014 – Apr 2026 |
| Amacker, V. T. 63 G-9-246388 | Civitas Permian Operating, LLC only | Amacker-Tippett (Devonian) | Upton | 1 | 54.8K | 1.77M | Mar 2008 – May 2024 |
| Mendota Ranch 63 G-14-280678 | Mmgl Txph, LLC only | Mendota, NW. (Granite Wash) | Roberts | 1 | 53.6K | 1.74M | Jan 2016 – Apr 2026 |
| State Tract 563-L G-2-114520 | Reunion Energy Company only | Matagorda Block 563-L (6517) | Matgrda IS-LB | 1 | 52.3K | 127K | Jan 1993 – Apr 1994 |
| Champion Int'l Unit A-1163 G-6-153652 | Swift Energy Company only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 41.5K | 276K | Jan 1995 – Feb 1999 |
| Mendota Ranch 63 G-14-280563 | Mmgl Txph, LLC only | Mendota, NW. (Granite Wash) | Roberts | 1 | 39.7K | 1.43M | Feb 2016 – Apr 2026 |
| Glasscock, C. G. G-3-150510 | Proline Energy Resources Inc only | Glasscock (Wilcox 10630) | Colorado | 1 | 35.8K | 1.38M | Jul 1994 – Jan 2005 |
| Moore 63 G-14-268785 | Bce-Mach II LLC only | Meg (Granite Wash) | Hemphill | 1 | 35.3K | 1.59M | Mar 2013 – Apr 2026 |
| BP Black Stone a-263 Unit G-3-251695 | Zarvona Energy LLC only | Magnolia Springs (Austin Chalk) | Jasper | 1 | 33K | 4.14M | Jun 2009 – Apr 2026 |
| State Tract 629-L, SE/4 G-2-101908 | Fairways Spec. Sales & Serv Inc only | Block 630-L (4950) | Matgrda IS-LB | 1 | 33K | 172K | Jan 1993 – Feb 1995 |
| Vaquillas Ranch 1631A G-4-160974 | Three-C Oil and Gas only | Vaquillas Ranch (Lobo) | Webb | 1 | 31.7K | 5.85M | Sep 1996 – Oct 2007 |
| Mejia Unit G-4-282931 | Forza Operating, LLC only | Riverside (6300,UP.) | Nueces | 1 | 31.3K | 309K | Nov 2017 – Oct 2023 |
| Channelview Townsite "E" G-3-177328 | Ballard Exploration Company,inc. only | Canadian Hunter (Yegua 10,630) | Harris | 1 | 28.8K | 961K | Mar 2000 – Oct 2002 |
| Moore 63 G-14-241403 | Bce-Mach II LLC only | Meg (Granite Wash) | Hemphill | 1 | 27.8K | 1.65M | Jun 2008 – Apr 2026 |
| Brainard 63 G-14-279047 | Presidio Petroleum LLC only | Horsecreek N. E. (Cleveland) | Lipscomb | 1 | 26.5K | 284K | Oct 2015 – Apr 2026 |
| Barker-Lentz G-6-255238 | Enpower Resources Inc. only | Bethany (Travis Peak 6300) | Harrison | 1 | 23.4K | 29.5K | Aug 2006 – Mar 2020 |
| Ritchie Farms, Ltd G-4-249497 | Sandalwood Exploration, L.P. only | Taft, Northeast (6350) | San Patricio | 1 | 23.4K | 244K | Jun 2009 – Sep 2014 |
| Tovar West-Lloyd 63 a Unit G-1-263892 | Javelin Energy Partners Mgmt LLC only | Briscoe Ranch (Eagleford) | Maverick | 1 | 21.1K | 152K | Oct 2011 – Dec 2017 |
| Moore 63 G-14-255633 | Bce-Mach II LLC only | Meg (Granite Wash) | Hemphill | 1 | 19.6K | 1.18M | May 2010 – Apr 2026 |
| Moore 63 G-14-225372 | Bce-Mach II LLC only | Meg (Granite Wash) | Hemphill | 1 | 19.2K | 1.58M | Dec 2006 – Apr 2026 |
| Canon "63" B G-10-111560 | Leonard Brothers Operating Co. only | Yucca Butte, W. (Ellen) | Pecos | 1 | 18.9K | 211K | Jan 1993 – Jul 2018 |
| Ellzey "563" G-14-262386 | Mewbourne Oil Company only | Northrup (Cleveland) | Ochiltree | 1 | 18.2K | 1.63M | Apr 2011 – Apr 2026 |
| S. T. 310-L S/2/NE/4 G-3-159858 | Walter Oil & Gas Corporation only | Cyclone (Rob 43 6350 Res. A) | Galveston-LB | 1 | 17.5K | 8.11M | May 1996 – Apr 2011 |
| Mahalitc G-3-172184 | Zinn Petroleum Co. only | Matthew (Yegua 6300) | Colorado | 1 | 15.8K | 1.39M | Mar 1999 – May 2013 |
| BP Black Stone a-632 Unit G-3-254783 | Anadarko E&P Onshore LLC only | Magnolia Springs (Austin Chalk) | Newton | 1 | 15.7K | 1.59M | Oct 2009 – Jan 2013 |
| Moore 63 G-14-245038 | Bce-Mach II LLC only | Meg (Granite Wash) | Hemphill | 1 | 15.2K | 1.05M | Nov 2008 – Apr 2026 |
| Dougherty, M. P. G-4-149304 | Kerr-McGee Oil & Gas Onshore LP only | Foy, E. (6300) | Hidalgo | 1 | 14.7K | 1.65M | Apr 1994 – Dec 2003 |
| S. T. 310-L S/2 NE/4 G-3-160339 | Walter Oil & Gas Corporation only | Cyclone (Rob 43 6350 Res. A) | Galveston-LB | 1 | 14.5K | 6.04M | Jun 1996 – Apr 2011 |
| O'Brien, J. M. "E" G-2-231786 | Greta Operating Company LLC only | Greta, W. (6300) | Refugio | 1 | 14.5K | 568K | Jun 2007 – Apr 2026 |
| Moore 63 G-14-246656 | Bce-Mach II LLC only | Meg (Granite Wash) | Hemphill | 1 | 14.4K | 1M | Nov 2008 – Apr 2026 |
| Mitchell 763 G-14-220563 | EOG Resources, Inc. only | Peery (Cleveland) | Lipscomb | 1 | 14.4K | 45.2K | Sep 2006 – Aug 2007 |