| Webb G-6-189085 | Sydri Operating, LLC only | Glenwood (Cotton Valley) | Upshur | 1 | 5.19K | 494K | Apr 2002 – Sep 2019 |
| BMT/K&H G-4-177633 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 5.01K | 4.28M | May 2000 – Aug 2026 |
| Webb O-3-13632 | Byng Energy Group, Inc. only | Giddings (Austin Chalk-3) | Fayette | 2 | 4.95K | 18.8K | by Jan 1993 – Mar 2000 |
| Webb County School Board G-4-154827 | North Central Oil Corp. only | Big Cowboy (Lobo) | Webb | 1 | 4.92K | 286K | Jun 1995 – Feb 2003 |
| Webb Oil Unit II O-1-3964 | Lodel Energy Resources Corporati only | Drummond (Austin 1400) | Caldwell | 6 | 4.84K | 29 | by Jan 1993 – Aug 2026 |
| Webb County School Land 504 G-1-293246 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 4.83K | 3.07M | Jun 2022 – Aug 2026 |
| Webb, Rueben O-1-5794 | Lodel Energy Resources Corporati only | Drummond (Edwards 1800) | Caldwell | 1 | 4.8K | 0 | Jan 2012 – Jun 2026 |
| BMT/K&H G-4-179771 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 4.76K | 2.07M | Oct 2000 – Jul 2017 |
| Webb, Rueben O-1-15445 | Lodel Energy Resources Corporati only | Drummond (Austin 1400) | Caldwell | 2 | 4.58K | 0 | Jan 2012 – Jun 2026 |
| Callaghan Ranch G-4-146072 | Chesapeake Operating, Inc. only | Finley-Webb (Upper Cons) | Webb | 1 | 4.57K | 4.07M | Jul 1993 – Jun 2009 |
| Webb, Edgar O-1-776 | Production Resources, Inc. only | Kaye (Navarro) | Wilson | 5 | 4.53K | 16 | by Jan 1993 – Sep 2017 |
| Dulaney-Bruni G-4-251672 | Varas Energy Operating Company, only | Zwebb (10350) | Webb | 1 | 4.51K | 2.41M | Jul 2009 – Aug 2026 |
| McGrath "B" G-4-204620 | Mountain V Texas, LLC only | Zwebb (10350) | Zapata | 1 | 4.5K | 771K | Aug 2004 – Jul 2026 |
| Webb, Max L., -B- O-1-3346 | Ams Energy Solutions LLP only | Salt Flat | Guadalupe | 8 | 4.48K | 20 | by Jan 1993 – May 2023 |
| Webb, Vernon O-9-8124 | Qri Industries, Inc. only | Ballinger (Palo Pinto, N.) | Runnels | 6 | 4.36K | 77 | by Jan 1993 – Jan 2019 |
| Webb County School Board G-4-123430 | North Central Oil Corp. only | Big Cowboy (Lobo) | Webb | 1 | 4.35K | 354K | by Jan 1993 – Jul 1998 |
| Vaquillas-Borrego G-4-191512 | Killam Oil Co., Ltd. only | Zwebb (10350) | Webb | 1 | 4.32K | 410K | Sep 2002 – Jan 2016 |
| BMT/K&H G-4-185494 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 4.29K | 1.04M | Oct 2001 – Jun 2010 |
| Webb, Leslie et al -L- G-14-76891 | BP America Production Company only | Mendota, NW. (Cherokee) | Hemphill | 1 | 4.22K | 143K | by Jan 1993 – Mar 1999 |
| Thomasma, Ray J. G-4-206935 | Hilcorp Energy Company only | Zwebb (10350) | Zapata | 1 | 4.21K | 372K | Oct 2004 – May 2015 |
| Webb "T" G-14-258221 | Unit Petroleum Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 4.2K | 97.8K | May 2010 – Aug 2026 |
| McGrath G-4-189401 | Killam Oil Co., Ltd. only | Zwebb (10350) | Webb | 1 | 4.08K | 1.11M | May 2002 – Apr 2004 |
| BMT/K&H G-4-186786 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 4.05K | 1.09M | Nov 2001 – Aug 2026 |
| BMT/K&H G-4-184683 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 4.02K | 915K | Jul 2001 – Aug 2026 |
| Callaghan Ranch G-4-172866 | Hilcorp Energy Company only | Finley-Webb (Upper Cons) | Webb | 1 | 4.02K | 1.16M | Apr 1999 – Jul 2015 |
| Webb, Arthur -B- G-14-127988 | Mmgl Txph, LLC only | Canadian, West (Morrow Upper) | Hemphill | 1 | 3.92K | 1.87M | by Jan 1993 – Aug 2026 |
| Webb -a- Battery #4 O-14-1593 | Red Line Company, Ltd. only | Panhandle Gray County Field | Gray | 2 | 3.85K | 21.1K | by Jan 1993 – Aug 2026 |
| BMT/K&H G-4-186871 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 3.85K | 710K | Dec 2001 – May 2021 |
| Thomasma, Ray J. G-4-212144 | Hilcorp Energy Company only | Zwebb (9200) | Zapata | 1 | 3.83K | 168K | Jan 2005 – Jan 2009 |
| Webb O-8-28028 | Kestrel Resources, Inc. only | Kestrel (Miss.) | Throckmorton | 1 | 3.79K | 38 | Nov 1996 – Feb 2000 |
| Callaghan Ranch G-4-205996 | Hilcorp Energy Company only | Finley-Webb (Lobo Cons) | Webb | 1 | 3.78K | 1.29M | Dec 2004 – Nov 2020 |
| Thomasma, Ray J. G-4-208855 | Hilcorp Energy Company only | Zwebb (10350) | Zapata | 1 | 3.77K | 426K | Dec 2004 – Jun 2015 |
| Webb County School Board G-4-154942 | North Central Oil Corp. only | Big Cowboy (Lobo) | Webb | 1 | 3.71K | 244K | Jul 1995 – Feb 1998 |
| Webb, F.J. Unit 1 G-1-215220 | El Toro Resources LLC only | Pena Creek (Georgetown) | Dimmit | 1 | 3.66K | 927K | Dec 2004 – Aug 2026 |
| Webb O-13-29974 | D and J Resources Incorporated only | Stoneburg, S. (Miss.) | Montague | 1 | 3.64K | 21.5K | Dec 2001 – Apr 2011 |
| BMT/K&H G-4-176441 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 3.53K | 3.42M | Mar 2000 – Aug 2026 |
| Webb County School Board G-4-129369 | North Central Oil Corp. only | Big Cowboy (Lobo) | Webb | 1 | 3.44K | 401K | by Jan 1993 – Mar 1999 |
| Vaquillas Borrego G-4-241635 | Killam Oil Co., Ltd. only | Zwebb (10350) | Webb | 1 | 3.34K | 500K | May 2008 – Mar 2014 |
| Webb, Vernon B O-9-9455 | Oil, Gas, Etc. LLC only | Ballinger (Palo Pinto, N.) | Runnels | 3 | 3.33K | 56 | Apr 1994 – Jan 2019 |
| BMT/K&H G-4-185692 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 3.3K | 520K | Sep 2001 – Aug 2026 |
| Webb, Lois G-14-156634 | Mmgl Txph, LLC only | Mendota, NW. (Granite Wash) | Roberts | 1 | 3.24K | 458K | May 1995 – Dec 2007 |
| Thomasma, Ray J. G-4-255866 | Hilcorp Energy Company only | Zwebb (10350) | Webb | 1 | 3.17K | 2.19M | Apr 2010 – Jan 2018 |
| Webb 'A' O-11-68267 | Gruy Petroleum Management Co. only | Brahaney (Penn.) | Yoakum | 1 | 3.17K | 948 | Dec 2000 – May 2004 |
| McGrath G-4-198053 | Mountain V Texas, LLC only | Zwebb (10350) | Zapata | 1 | 3K | 546K | Nov 2003 – Aug 2026 |
| Webb County School Board G-4-172532 | Proline Energy Resources Inc only | Big Cowboy (Lobo) | Webb | 1 | 2.9K | 738K | Feb 1999 – Dec 2024 |
| Webb, Tommy C. -C- O-1-10811 | Quintanilla, Tony C. only | Somerset | Atascosa | 12 | 2.77K | 78 | by Jan 1993 – Jun 1999 |
| Arthur Webb "T" G-14-88004 | BP America Production Company only | Mendota, NW. (Cherokee) | Hemphill | 1 | 2.76K | 234K | by Jan 1993 – Apr 2005 |
| Webb "445" O-11-71130 | Burk Royalty Co., Ltd. only | Platang (San Andres) | Yoakum | 2 | 2.74K | 0 | Nov 2020 – Aug 2026 |
| Texaco Fee G-4-174050 | EOG Resources, Inc. only | Zwebb (10350) | Zapata | 1 | 2.71K | 591K | Aug 1999 – Jun 2011 |
| BMT/K&H G-4-181765 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 2.7K | 1.82M | Mar 2001 – Apr 2015 |