| Fox, J. E., et Al O-2-3384 | Rincon Petroleum Corporation only | Caesar, South (Luling) | Bee | 5 | 5.89K | 37 | by Jan 1993 – Jun 1996 |
| W. J. Fox "A" O-2-9644 | Hilcorp Energy Company only | Hynes Ranch (6800) | Refugio | 3 | 5.72K | 43.7K | Mar 2011 – Dec 2018 |
| Foxall, T. H. Unit G-13-139965 | BKV Barnett, LLC only | Boonsville (Bend Congl., Gas) | Wise | 1 | 5.68K | 644K | by Jan 1993 – Aug 2026 |
| Fox, Cora O-2-7767 | Slack Oil & Gas only | Fagan (5650) | Refugio | 1 | 5.66K | 59.9K | by Jan 1993 – Feb 1998 |
| Green Fox Deep GU 2 G-6-222561 | RFE Operating, LLC only | Woodlawn (Cotton Valley) | Marion | 1 | 5.57K | 167K | Sep 2006 – Nov 2013 |
| Minaldi, Ronald J. Unit G-6-90862 | Fair Oil, Ltd. only | Green Fox (Pettit 6200) | Marion | 1 | 5.34K | 757K | by Jan 1993 – Aug 2006 |
| Fox State Unit G-10-286794 | Apache Corporation only | Alpine High (Cons) | Reeves | 1 | 5.29K | 5.01M | Jun 2018 – Aug 2026 |
| Quirk, Robert G-6-125894 | Texla Operating Company only | Green Fox, E. (Pettit -B-) | Marion | 1 | 5.22K | 193K | Feb 1993 – Jan 2012 |
| Palafox Explor. Co. -17- G-4-47595 | Fasken Oil and Ranch, Ltd. only | Gold River, North (Olmos) | Webb | 1 | 5.13K | 1.83M | by Jan 1993 – Aug 2026 |
| Hooper, E.S. O-6-12773 | Jamex, Inc. only | Green Fox, E. (Pettit -B-) | Marion | 1 | 4.94K | 44.4K | by Jan 1993 – Dec 1994 |
| Hasty-Chew-Unit O-6-13218 | Fair Oil, Ltd. only | Green Fox (Pettit -C-) | Marion | 1 | 4.9K | 6.32K | Aug 1993 – Jul 1995 |
| Hooper, E.S. "A" O-6-12897 | Jamex, Inc. only | Green Fox, E. (Pettit -B-) | Marion | 2 | 4.55K | 25.8K | by Jan 1993 – Dec 1994 |
| Fox State Unit G-10-287088 | Apache Corporation only | Alpine High (Cons) | Reeves | 1 | 4.47K | 3.68M | Dec 2018 – Aug 2026 |
| T. Fox O-8-26161 | Interstate Explorations LLC only | Dandy H. Wilkes (Strawn) | Eastland | 8 | 4.43K | 1.11K | by Jan 1993 – Nov 2016 |
| Palafox 1335 G-4-274257 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 4.41K | 794K | Oct 2012 – Jul 2026 |
| Fox G-13-210115 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Wise | 1 | 4.4K | 508K | Jun 2005 – Jul 2026 |
| Fox, Jeff S. G-13-189234 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 4.24K | 426K | Mar 2002 – Aug 2026 |
| Fox G-8-125887 | Interstate Explorations LLC only | I. L. & M. (Upper Congl.) | Eastland | 1 | 4.18K | 387K | by Jan 1993 – Aug 2026 |
| Fox, Jeff S. G-13-228958 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 4.12K | 718K | Dec 2006 – Nov 2014 |
| Grogan-Veach Unit G-6-140639 | Fair Oil, Ltd. only | Green Fox (Smith) | Marion | 1 | 4.12K | 429K | by Jan 1993 – Feb 2007 |
| Fox G-13-224590 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Wise | 1 | 4.11K | 650K | Dec 2006 – Jun 2024 |
| Fox State Unit G-10-287056 | Apache Corporation only | Alpine High (Cons) | Reeves | 1 | 4K | 4.88M | Jan 2019 – Aug 2026 |
| Yeager, Agnes J. O-4-9506 | Fox, Hewitt B., Inc. only | Clara Driscoll, SE (5700, LO) | Nueces | 1 | 3.91K | 21 | by Jan 1993 – Jan 1999 |
| Green Fox (Smith Zone) Unit G-6-93397 | RFE Operating, LLC only | Green Fox (Smith) | Marion | 1 | 3.88K | 332K | by Jan 1993 – Sep 1999 |
| Foxell G-2-174126 | Sue-Ann Operating, L.C. only | Supple Jack Creek (Yegua) | Lavaca | 1 | 3.76K | 907K | Mar 1999 – Sep 2002 |
| Palafox 1029 G-1-273175 | Lewis Petro Properties, Inc. only | Briscoe Ranch (Eagleford) | Webb | 1 | 3.74K | 7.2M | Aug 2013 – Aug 2026 |
| Fox G-11-194005 | Sojourner Drilling Corporation only | Rhombochasm (Bend Conglomerate) | Cottle | 1 | 3.73K | 495K | Jan 2003 – Jun 2023 |
| Fox G-13-210116 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Wise | 1 | 3.71K | 515K | Jun 2005 – Jul 2026 |
| Green Fox (Smith Zone) Unit G-6-169240 | RFE Operating, LLC only | Green Fox (Smith) | Marion | 1 | 3.67K | 463K | Aug 1998 – Jul 2023 |
| Fox G-13-224588 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Wise | 1 | 3.31K | 465K | Dec 2006 – Aug 2025 |
| De Young G-4-216016 | Lighthouse Operating, Inc. only | Miller & Fox (Hockley 4875) | Jim Wells | 1 | 3.24K | 512K | Oct 2005 – Apr 2010 |
| Fox G-13-225364 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Wise | 1 | 3.2K | 454K | Oct 2006 – Mar 2026 |
| Fox G-6-245738 | Valence Operating Company only | Carthage (Haynesville Shale) | Harrison | 1 | 3.17K | 234K | Jan 2009 – Aug 2026 |
| Foxworth O-13-7170 | Farmer, Lewis & Hayden only | Young County Regular | Young | 2 | 3.01K | 21 | by Jan 1993 – Sep 1997 |
| Foxworth O-13-21864 | Farmer, Lewis & Hayden only | Newcastle, N. (Caddo) | Young | 2 | 3.01K | 21 | by Jan 1993 – Sep 1997 |
| Fox Tail O-10-24966 | Whiting Oil and Gas Corporation only | Cheyenne (Capitan) | Winkler | 2 | 2.99K | 2.62K | by Jan 1993 – Nov 2002 |
| State of Texas O-6-13108 | Texla Operating Company only | Green Fox, E. (Travis Peak) | Marion | 1 | 2.97K | 141K | by Jan 1993 – Jan 2012 |
| Fox G-13-224589 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Wise | 1 | 2.94K | 432K | Dec 2006 – Apr 2019 |
| Pool, G. C. G-5-142251 | Ellis Exploration, Inc. only | Ham Fox (Rodessa) | Henderson | 1 | 2.86K | 43.4K | Apr 1993 – Sep 1995 |
| Fox, J. H. B O-13-2577 | Grayson Petroleum Company only | Woodbine | Cooke | 1 | 2.69K | 18 | Apr 1993 – Mar 2003 |
| Fox, Zina GU 2 G-13-212600 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 2.68K | 1.61M | Jul 2005 – Aug 2026 |
| Fox Creek O-2-9566 | Chesapeake Operating, Inc. only | Eagleville (Eagle Ford) | McMullen | 2 | 2.64K | 1.2K | Aug 2010 – Nov 2010 |
| Fox, Sallie "D" G-9-92164 | Hannathon Petroleum, LLC only | Sallie (Cisco) | Sterling | 1 | 2.59K | 88.1K | by Jan 1993 – Mar 2012 |
| Foxworth O-13-21995 | Farmer, Lewis & Hayden only | Newcastle, N.(strawn) | Young | 2 | 2.34K | 21 | by Jan 1993 – Sep 1997 |
| W. J. Fox "A" G-2-247184 | Hilcorp Energy Company only | Hynes Ranch (7000) | Refugio | 1 | 2.32K | 49.5K | Apr 2009 – Jul 2009 |
| Fox State Unit G-10-287057 | Apache Corporation only | Alpine High (Cons) | Reeves | 1 | 2.32K | 4.34M | Jan 2019 – Aug 2026 |
| Foxell G-2-230546 | North American Drilling Corp only | Hope (Wilcox 7700) | Lavaca | 1 | 2.28K | 62.5K | Mar 2007 – Jan 2008 |
| Taylor, J. B. et Al G-4-154102 | Fox, Hewitt B., Inc. only | Mercedes ( 1-F-1) | Hidalgo | 1 | 2.28K | 484K | Mar 1995 – Mar 2005 |
| Tjiii O-6-15565 | Petro-Chem Operating Company,inc only | Green Fox (Page) | Marion | 1 | 2.23K | 0 | Apr 2018 – Aug 2019 |
| Green Fox Deep Unit 1 G-6-215575 | C. W. Resources, Inc. only | Woodlawn (Cotton Valley) | Marion | 1 | 2.19K | 177K | Aug 2005 – Mar 2012 |