| Hudson 0-66X67 G-10-278213 | BPX Operating Company only | Ford, West (Wolfcamp) | Reeves | 1 | 613K | 4.18M | Mar 2015 – Apr 2026 |
| Ledbetter 66 G-14-260620 | Unbridled Resources, LLC only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 310K | 5.81M | Apr 2011 – Apr 2026 |
| Ledbetter 66 G-14-266102 | Unbridled Resources, LLC only | Mills Ranch (Granite Wash Cons.) | Wheeler | 1 | 269K | 902K | Nov 2011 – Apr 2026 |
| Slick, T.B. Estate B-266 G-4-155693 | Kerr-McGee Oil & Gas Onshore LLC only | Rincon (Vicksburg 6190) | Starr | 1 | 234K | 6.37M | Jul 1995 – Nov 2003 |
| Jayhawk Alloc 66-65 G-10-297653 | Greenlake Energy Operating, LLC only | Phantom (Wolfcamp) | Loving | 1 | 221K | 833K | Feb 2024 – Apr 2026 |
| Carbondale Unit G-6-145827 | Sulphur River Exploration, Inc. only | Carbondale (Smackover 9660) | Cass | 1 | 214K | 1.29M | Jun 1993 – Oct 2015 |
| Doug Holmes 566 G-14-280558 | Latigo Petroleum, LLC only | Pan Petro (Cleveland) | Ochiltree | 1 | 179K | 2.33M | Dec 2015 – Mar 2026 |
| Donnell a- DM 366 SA 1 G-1-289304 | BPX Operating Company only | Hawkville (Eagleford Shale) | McMullen | 1 | 175K | 1.62M | May 2020 – Apr 2026 |
| Donnell a- DM 366 SA 2 G-1-289050 | BPX Operating Company only | Hawkville (Eagleford Shale) | McMullen | 1 | 157K | 1.21M | May 2020 – Apr 2026 |
| Townsen B Unit 66 G-10-300499 | Apache Corporation only | Phantom (Wolfcamp) | Reeves | 1 | 144K | 1.23M | May 2017 – Apr 2026 |
| Ledbetter 66 G-14-265458 | Unbridled Resources, LLC only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 139K | 4.01M | Dec 2011 – Apr 2026 |
| Ledbetter 66 G-14-267810 | Unbridled Resources, LLC only | Mills Ranch (Granite Wash Cons.) | Wheeler | 1 | 131K | 794K | Nov 2012 – Feb 2024 |
| Ledbetter 66 G-14-268000 | Unbridled Resources, LLC only | Mills Ranch (Granite Wash Cons.) | Wheeler | 1 | 128K | 922K | Nov 2012 – Apr 2026 |
| Donnell a- DM 366 SA 3 G-1-289110 | BPX Operating Company only | Hawkville (Eagleford Shale) | McMullen | 1 | 121K | 940K | May 2020 – Apr 2026 |
| Doug Holmes 566 G-14-279694 | Latigo Petroleum, LLC only | Pan Petro (Cleveland) | Ochiltree | 1 | 119K | 1.5M | Sep 2015 – Mar 2026 |
| Doug Holmes 566 G-14-276518 | Mewbourne Oil Company only | Pan Petro (Cleveland) | Ochiltree | 1 | 117K | 1.07M | Nov 2014 – Apr 2026 |
| Donnell a- DM 366 SA 4 G-1-289106 | BPX Operating Company only | Hawkville (Eagleford Shale) | McMullen | 1 | 111K | 1.32M | May 2020 – Apr 2026 |
| Ledbetter 66 G-14-268035 | Unbridled Resources, LLC only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 104K | 3.63M | Nov 2012 – Apr 2026 |
| I. P. Farms 366 Ac. Gas Unit G-3-167011 | Elliott Oil & Gas Operating Co. only | Chocolate Bayou, S. (LHF-Frio) | Brazoria | 1 | 102K | 4.48M | Dec 1997 – Aug 2002 |
| Hudson 0-66X67 G-10-300168 | BPX Operating Company only | Phantom (Wolfcamp) | Reeves | 1 | 102K | 671K | Jan 2026 – Apr 2026 |
| I. P. Farms 366 Ac. Gas Unit G-3-204713 | Elliott Oil & Gas Operating Co. only | Chocolate Bayou, S. (Frio 9900) | Brazoria | 1 | 102K | 259K | Apr 2004 – Jan 2025 |
| Ledbetter 66 G-14-270248 | Unbridled Resources, LLC only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 101K | 3.33M | May 2013 – Apr 2026 |
| Hudson 0-66X67 G-10-300167 | BPX Operating Company only | Phantom (Wolfcamp) | Reeves | 1 | 94K | 509K | Jan 2026 – Apr 2026 |
| Donner-Brown Unit A-660 G-6-155801 | Rockstar Production, LLC only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 91.6K | 1.64M | Jul 1995 – Apr 2026 |
| Ledbetter 66 G-14-259985 | Unbridled Resources, LLC only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 86.9K | 2.08M | Apr 2011 – Apr 2026 |
| Hudson 0-66X67 G-10-300170 | BPX Operating Company only | Phantom (Wolfcamp) | Reeves | 1 | 78.8K | 625K | Jan 2026 – Apr 2026 |
| BP Black Stone a-266 Unit G-3-246915 | Zarvona Energy LLC only | Magnolia Springs (Austin Chalk) | Jasper | 1 | 73.6K | 2.63M | Dec 2008 – Apr 2026 |
| Miguelita Scanio G-2-244399 | Acock/Anaqua Operating Co., LP only | Refugio-Fox (6600) | Refugio | 1 | 72.3K | 175K | Oct 2008 – Jan 2019 |
| Handley Courson 566 G-14-246777 | Courson Oil & Gas, Inc. only | Pan Petro (Cleveland) | Ochiltree | 1 | 70.1K | 981K | Jan 2009 – Apr 2026 |
| Hudson 0-66X67 G-10-300169 | BPX Operating Company only | Phantom (Wolfcamp) | Reeves | 1 | 67.7K | 364K | Jan 2026 – Mar 2026 |
| Cook 665 G-14-285503 | Presidio Petroleum LLC only | Allen-Parker (Marmaton) | Ochiltree | 1 | 66.8K | 584K | Jun 2018 – Apr 2026 |
| Mathers Ranch 166-157 (AW) G-14-279184 | Mmgl Txph, LLC only | Mathers Ranch (Granite Wash) | Hemphill | 1 | 57.2K | 2.04M | Oct 2014 – Apr 2026 |
| Young 51-66 MG EX G-14-285035 | Mmgl Txph, LLC only | Hemphill (Granite Wash.) | Hemphill | 1 | 55.4K | 1.82M | Jun 2018 – Apr 2026 |
| Hudson 0-66X67 G-10-299918 | BPX Operating Company only | Phantom (Wolfcamp) | Reeves | 1 | 50.3K | 466K | Jan 2026 – Apr 2026 |
| Mathers Ranch 166-1518 (AW) G-14-276653 | Mmgl Txph, LLC only | Mathers Ranch (Granite Wash) | Hemphill | 1 | 45.9K | 1.51M | Jan 2015 – Apr 2026 |
| Ledbetter 66 G-14-276572 | Unbridled Resources, LLC only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 45.2K | 1.4M | Dec 2014 – Apr 2026 |
| Donnell Minerals 366 G-1-251821 | BPX Operating Company only | Hawkville (Eagleford Shale) | McMullen | 1 | 44.9K | 927K | Aug 2009 – Feb 2020 |
| Hudson 0-66X67 G-10-300083 | BPX Operating Company only | Sandbar (Bone Spring) | Reeves | 1 | 44K | 318K | Jan 2026 – Apr 2026 |
| Young 66 G-14-242761 | Mmgl Txph, LLC only | Hemphill (Granite Wash Lower) | Hemphill | 1 | 43K | 2M | Aug 2008 – Apr 2026 |
| Young 51-66 MD EX G-14-284855 | Mmgl Txph, LLC only | Hemphill (Granite Wash.) | Hemphill | 1 | 41.3K | 5.39M | Jun 2018 – Apr 2026 |
| Ledbetter 66 G-14-216361 | Unbridled Resources, LLC only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 35.6K | 1.42M | Nov 2005 – May 2020 |
| Hull G-3-126337 | Proline Energy Resources Inc only | Hull Airport (Yegua 8660) | Fort Bend | 1 | 35.2K | 3.77M | Jan 1993 – Nov 2025 |
| I. P. Farms 366 Ac. Gas Unit G-3-177445 | Rutherford Oil Corporation only | Chocolate Bayou, S. (LHF-Frio) | Brazoria | 1 | 30.7K | 1.16M | Apr 2000 – Mar 2005 |
| Rayzor 1669 G-4-210870 | Hilcorp Energy Company only | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 29.8K | 1M | Dec 2004 – Oct 2023 |
| Ledbetter 66 G-14-216378 | 4P Energy Texas, LLC only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 28.2K | 624K | Apr 2006 – Jun 2013 |
| Ledbetter 66 G-14-225232 | Unbridled Resources, LLC only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 26.9K | 755K | Dec 2006 – Jan 2018 |
| Ledbetter 66 G-14-261767 | Chesapeake Operating, Inc. only | Mills Ranch (Granite Wash Cons.) | Wheeler | 1 | 26.1K | 28.8K | Mar 2011 – Apr 2011 |
| Keidel-Tejones 1664 G-4-157006 | Three-C Oil and Gas only | Vaquillas Ranch (Lobo) | Webb | 1 | 25.1K | 3M | Feb 1996 – Dec 2002 |
| Hudson 0-66X67 G-10-299916 | BPX Operating Company only | Sandbar (Bone Spring) | Reeves | 1 | 24.7K | 183K | Jan 2026 – Apr 2026 |
| Scanio, Miguelita G-2-207964 | Digital Operating Company LLC only | Refugio-Fox (6600) | Refugio | 1 | 23.6K | 253K | Nov 2004 – May 2020 |