| Leslie Webb et Al G-14-255788 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 50.6K | 2.15M | Feb 2010 – Aug 2026 |
| Vaquillas-Borrego G-4-188871 | Killam Oil Co., Ltd. only | Zwebb (10350) | Webb | 1 | 49.9K | 3.3M | May 2002 – Aug 2016 |
| Linton Webb O-10-43815 | Moriah Operating,llc only | Garden City, S. (Wolfcamp) | Mitchell | 1 | 49.7K | 77.6K | Dec 2012 – Aug 2026 |
| Webb a Unit G-13-268594 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Cooke | 1 | 49.3K | 1.39M | Jun 2012 – Aug 2026 |
| BMT/K&H G-4-183460 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 49.2K | 3.52M | May 2001 – Aug 2010 |
| Webb -a- Battery #1 O-14-558 | Red Line Company, Ltd. only | Panhandle Gray County Field | Gray | 9 | 49.2K | 83.2K | by Jan 1993 – Aug 2026 |
| BMT/K & H "B" G-4-176451 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 48.5K | 5.28M | Mar 2000 – Aug 2026 |
| Webb, Leslie et al 'R' G-14-269525 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 46.9K | 1.48M | Apr 2013 – Aug 2026 |
| Webb -a- Battery #5 O-14-1718 | Red Line Company, Ltd. only | Panhandle Gray County Field | Gray | 6 | 45.8K | 46.9K | by Jan 1993 – Aug 2026 |
| Webb, L. A. G-4-97314 | Amerril Energy LLC only | Flour Bluff (Deep Consol.) | Nueces | 1 | 45.7K | 1.68M | by Jan 1993 – Dec 2009 |
| Gray-Webb (AW) G-6-286031 | Sabine Energy Inc. only | Oak Hill (Cotton Valley) | Rusk | 1 | 44.4K | 7.76M | Oct 2018 – Aug 2026 |
| Webb G-3-155937 | Jamex, Inc. only | Chesterville, N. (Pack) | Colorado | 1 | 44.2K | 4.55M | Oct 1995 – Jul 2026 |
| Webb G-14-259769 | Unit Petroleum Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 43.4K | 1.1M | Oct 2010 – Dec 2025 |
| Webb, Lois G-14-160751 | Mmgl Txph, LLC only | Mendota, NW. (Granite Wash) | Roberts | 1 | 42K | 2.41M | Sep 1996 – Aug 2026 |
| Webb B Unit G-13-269678 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Cooke | 1 | 41K | 1.18M | Jun 2012 – Aug 2026 |
| Amerada-Webb O-11-71121 | Burk Royalty Co., Ltd. only | Platang (San Andres) | Yoakum | 14 | 40.1K | 17K | Nov 2020 – Aug 2026 |
| Webb -A- G-14-267304 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 39.6K | 645K | Apr 2012 – Aug 2026 |
| Webb O-11-65875 | Breck Operating Corp. only | Brahaney (Wolfcamp) | Yoakum | 1 | 39.3K | 30.2K | by Jan 1993 – Jan 2002 |
| BMT/K&H "B" G-4-183475 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 39.2K | 2.74M | Jun 2001 – Aug 2026 |
| Webb B Unit G-13-268563 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Cooke | 1 | 39K | 1.34M | Jun 2012 – Aug 2026 |
| BMT/K&H G-4-181384 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 37.2K | 6.31M | Feb 2001 – Aug 2026 |
| Thompson, Webb -B- O-1-111 | Maverick Energy Group, Inc. only | Big Foot | Frio | 3 | 36.9K | 19.8K | Feb 1993 – Dec 2021 |
| Webb G-3-160565 | Jamex, Inc. only | Chesterville, N. (Pack) | Colorado | 1 | 35.2K | 4.89M | Sep 1996 – Jul 2026 |
| Webb -A- G-14-266621 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 35K | 858K | Dec 2011 – Aug 2026 |
| Webb, Leslie et al "R" G-14-232397 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 34.5K | 1.41M | Oct 2007 – Aug 2026 |
| Webb 187 G-14-270266 | Unit Petroleum Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 34.2K | 614K | Sep 2012 – Aug 2026 |
| BMT/K&H G-4-177527 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 33.7K | 8.58M | May 2000 – Aug 2026 |
| Cabezon G-4-245457 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 33.6K | 1.46M | Nov 2007 – Jun 2026 |
| Webb 187 G-14-267516 | Unit Petroleum Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 33.5K | 1.65M | Mar 2012 – Aug 2026 |
| Webber O-11-62369 | R2Q Operating LLC only | Brahaney | Yoakum | 1 | 33.5K | 26 | by Jan 1993 – Aug 2026 |
| Webb 393B O-11-66343 | McClure Oil Company, Inc. only | Brahaney | Yoakum | 1 | 32.8K | 29 | by Jan 1993 – Jan 2026 |
| Thomasma, Ray J. G-4-198842 | Hilcorp Energy Company only | Zwebb (10350) | Zapata | 1 | 32.8K | 4.09M | Nov 2003 – Aug 2026 |
| Arthur Webb et al "S" G-14-242166 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 32.1K | 1.87M | Aug 2008 – Aug 2026 |
| Arthur Webb -B- G-14-272249 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 31.4K | 727K | May 2013 – Aug 2026 |
| Arthur Webb et al "T" G-14-250877 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 31.3K | 961K | Mar 2009 – Aug 2026 |
| Arco AB "3" O-9-14742 | Forest Oil Corporation only | Webb Ray (Ellenburger) | Upton | 1 | 31.3K | 0 | Jan 1998 – Oct 2002 |
| Thomasma, Ray J. G-4-197050 | Hilcorp Energy Company only | Zwebb (10350) | Zapata | 1 | 31.2K | 4.88M | Sep 2003 – Aug 2026 |
| Webb 'A' G-14-277998 | Unit Petroleum Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 30.6K | 1.17M | Jan 2015 – Aug 2026 |
| Cabezon G-4-189382 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 30K | 810K | Feb 2002 – Jun 2026 |
| Arthur Webb et al "S" G-14-260347 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 28.3K | 800K | Oct 2010 – Aug 2026 |
| Cabezon G-4-237464 | Mountain V Texas, LLC only | Zwebb (10350) | Webb | 1 | 27.8K | 656K | Apr 2008 – Jun 2026 |
| Webb, Mary O-11-62497 | Diamondback E&P LLC only | Ackerly (Dean Sand) | Martin | 2 | 27.6K | 80K | by Jan 1993 – Jul 2019 |
| Webb, Arthur et al "T" G-14-262661 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 27.3K | 788K | Jun 2011 – May 2022 |
| Webb, Leslie et Al G-14-241156 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 27K | 1.49M | Jul 2008 – Aug 2026 |
| Webb, A. Estate G-14-227460 | Unit Petroleum Company only | Mendota, NW. (Cherokee) | Hemphill | 1 | 27K | 1.12M | Feb 2007 – Aug 2026 |
| Webb "A" O-11-67608 | Prize Operating Company only | Brahaney (Wolfcamp) | Yoakum | 1 | 26.9K | 4.5K | Aug 1996 – Nov 2000 |
| A. Webb Estate G-14-271946 | Unit Petroleum Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 26.2K | 1.08M | Dec 2012 – Aug 2026 |
| Carson, O. R. O-13-3232 | Staub, Larry, Inc. only | Webb (Oil Creek Sand) | Grayson | 2 | 26.1K | 24.9K | by Jan 1993 – Nov 2003 |
| Webb D Unit G-13-268389 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Cooke | 1 | 26K | 980K | Dec 2012 – Aug 2026 |
| Webb Estate O-11-61955 | Mineral Technologies, Inc. only | Ackerly (Dean Sand) | Dawson | 2 | 25.2K | 30.6K | by Jan 1993 – Apr 2009 |