| Webb County School Land 1384 G-4-159806 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 984 | 654K | Jul 1996 – Aug 2026 |
| Callaghan Ranch G-4-205986 | Hilcorp Energy Company only | Finley-Webb (Lobo Cons) | Webb | 1 | 982 | 773K | Dec 2004 – Jun 2020 |
| Webb, Ernest O-1-4183 | Ginco Operating Co. only | Luling-Branyon | Caldwell | 2 | 978 | 4.35K | by Jan 1993 – Nov 1997 |
| Dulaney-Bruni G-4-251652 | Varas Energy Operating Company, only | Zwebb (10350) | Webb | 1 | 956 | 3.57M | Oct 2008 – May 2026 |
| Callaghan Ranch G-4-115090 | Chesapeake Operating, Inc. only | Finley-Webb (Upper Cons) | Webb | 1 | 937 | 733K | May 1993 – Jan 2005 |
| Thomasma, Ray J. "D" G-4-215450 | Devon Energy Production Co, L.P. only | Zwebb (10350) | Zapata | 1 | 915 | 46.2K | Nov 2004 – Mar 2007 |
| Webb County G-4-65021 | Continental Exploration, L.L.C. only | Lake Casa Blanca, SE. (Lobo) | Webb | 1 | 904 | 227K | by Jan 1993 – Nov 2000 |
| Doney, L. C., Jr., Gas Unit G-4-14962 | Elliott Oil & Gas Operating Co. only | Webb (Watson 9500) | San Patricio | 1 | 879 | 192K | by Jan 1993 – May 2001 |
| Callaghan Ranch G-4-100523 | Mobil Producing TX. & N.M. Inc. only | Finley-Webb (Wilcox 5600) | Webb | 1 | 872 | 663K | by Jan 1993 – Jul 2002 |
| Wm Webb County School Land G-4-131975 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 841 | 562K | by Jan 1993 – Aug 2026 |
| Webb "P" et Al O-14-6062 | Midgard Energy Company only | Mendota, NW. (Cherokee) | Hemphill | 1 | 814 | 11.4K | by Jan 1993 – Jul 1995 |
| Wm Webb County School Land G-4-53061 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 811 | 638K | by Jan 1993 – Aug 2026 |
| Webb, F. J. G-1-228815 | El Toro Resources LLC only | Pena Creek (Georgetown) | Dimmit | 1 | 806 | 326K | Jul 2006 – Aug 2026 |
| Webb, Ollie -A- G-2-35035 | Advantage Oil & Gas, Inc. only | Weser (Recklaw 7600) | Goliad | 1 | 790 | 229K | by Jan 1993 – Nov 1998 |
| Webb, D. M. G-13-260773 | BKV Barnett, LLC only | Boonsville (Bend Congl., Gas) | Parker | 1 | 748 | 990K | Apr 2011 – Aug 2026 |
| Webb A G-5-255969 | Hilcorp Energy Company only | Dew (C.V. Consolidated) | Freestone | 1 | 742 | 1.33M | Feb 2010 – Aug 2026 |
| Webb County School Land G-4-119150 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 699 | 553K | by Jan 1993 – Mar 2025 |
| Webb County School Land "1383L" G-4-170459 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 690 | 628K | Aug 1998 – Aug 2026 |
| Webb County School Land G-4-131784 | White Marlin Operating Co, LLC only | Owen (Olmos) | Webb | 1 | 687 | 207K | by Jan 1993 – Sep 2008 |
| Webb County School Land 1383L G-4-166504 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 678 | 531K | Nov 1997 – Jul 2026 |
| Webb, Lois G-14-126800 | Amoco Production Company only | Mendota, NW. (Cherokee) | Roberts | 1 | 678 | 74.7K | by Jan 1993 – Jun 1999 |
| Callaghan Ranch G-4-172902 | Chesapeake Operating, Inc. only | Finley-Webb (Upper Cons) | Webb | 1 | 634 | 330K | Sep 2004 – Mar 2009 |
| Webb "T" G-14-258811 | Unit Petroleum Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 613 | 29.3K | Aug 2010 – Jan 2014 |
| Webb A G-5-197864 | Hilcorp Energy Company only | Dew (C.V. Consolidated) | Freestone | 1 | 588 | 3.44M | Sep 2003 – Aug 2026 |
| Callaghan Ranch G-4-208789 | Chesapeake Operating, Inc. only | Finley-Webb (Upper Cons) | Webb | 1 | 576 | 1.48M | Feb 2005 – Jun 2012 |
| Webber O-13-13565 | 1836 Energy LLC only | Clay County Regular | Clay | 4 | 574 | 32 | by Jan 1993 – Jul 2013 |
| Webb County School Land 1383 L G-4-167285 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 572 | 386K | Jan 1998 – Aug 2026 |
| Webb, Berry O-1-3924 | Benchmark Texas Petroleum, LLC. only | Drummond (Edwards 1800) | Caldwell | 2 | 571 | 9 | Nov 1993 – Sep 2010 |
| Callaghan Ranch G-4-134212 | Chesapeake Operating, Inc. only | Finley-Webb (Upper Cons) | Webb | 1 | 571 | 3.28M | by Jan 1993 – Dec 2004 |
| Webb County School Land 1383 G-4-208795 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 560 | 294K | Apr 2005 – Jul 2026 |
| Callaghan Ranch G-4-146869 | Hilcorp Energy Company only | Finley-Webb (Upper Cons) | Webb | 1 | 557 | 487K | Sep 1993 – Jul 2015 |
| O'Meara-Webb 687 Unit G-1-253306 | El Toro Resources LLC only | Indio Tanks (Pearsall) | Dimmit | 1 | 553 | 456K | Nov 2009 – Aug 2026 |
| Thomasma, Ray J. G-4-248002 | Hilcorp Energy Company only | Zwebb (10350) | Zapata | 1 | 546 | 70.7K | Feb 2009 – Jul 2018 |
| Webb A G-5-185331 | Hilcorp Energy Company only | Dew (C.V. Consolidated) | Freestone | 1 | 540 | 1.42M | Jan 2001 – Aug 2026 |
| Webb A G-5-193041 | Hilcorp Energy Company only | Dew (C.V. Consolidated) | Freestone | 1 | 534 | 5.39M | Jan 2003 – Aug 2026 |
| Webb Oil Unit III O-1-19425 | Lodel Energy Resources Corporati only | Drummond (Austin 1400) | Caldwell | 1 | 520 | 0 | Nov 2018 – Aug 2026 |
| Webb, Tom Brown O-1-7392 | Ginco Operating Co. only | Salt Flat | Caldwell | 9 | 513 | 20 | by Jan 1993 – Oct 1995 |
| Dulaney-Bruni G-4-209911 | EOG Resources, Inc. only | Zwebb (10350) | Webb | 1 | 507 | 107K | May 2005 – Sep 2009 |
| Webb County School Board G-4-194534 | Proline Energy Resources Inc only | Mancho Prado (L-1) | Webb | 1 | 492 | 171K | Apr 2003 – Jun 2026 |
| Callaghan Ranch G-4-70528 | Chesapeake Operating, Inc. only | Finley-Webb (Upper Cons) | Webb | 1 | 484 | 425K | by Jan 1993 – Nov 2004 |
| Webb County School Land G-4-117054 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 469 | 412K | by Jan 1993 – May 2026 |
| Webb County School Lands G-4-57125 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 463 | 201K | by Jan 1993 – Jun 2026 |
| Campbell-Webb G-14-95955 | Samson Lone Star, LLC only | Key (Morrow, Up.) | Wheeler | 1 | 461 | 1.45M | by Jan 1993 – Dec 2010 |
| Webb, H.L. O-11-9288 | Robertson Resources, Inc. only | Seagraves, W. (Strawn) | Gaines | 2 | 459 | 40 | Feb 1993 – Jan 1995 |
| Webb, J. F. G-13-192025 | Great American Resources Inc. only | Perrin, East (Caddo Congl.) | Jack | 1 | 456 | 90.5K | Oct 2002 – Mar 2017 |
| Webb, Lois G-14-172555 | BP America Production Company only | Mendota, NW. (Granite Wash) | Roberts | 1 | 448 | 154K | Feb 1999 – Aug 2001 |
| Callaghan Ranch G-4-145015 | Mobil Producing TX. & N.M. Inc. only | Finley-Webb (5100) | Webb | 1 | 442 | 549K | Apr 1993 – Apr 1999 |
| Webb A G-5-193628 | Hilcorp Energy Company only | Dew (C.V. Consolidated) | Freestone | 1 | 439 | 1.12M | Feb 2003 – Aug 2026 |
| Webb County School Land 1383L G-4-209795 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 408 | 199K | Mar 2005 – Aug 2026 |
| Webb A G-5-186103 | Hilcorp Energy Company only | Dew (C.V. Consolidated) | Freestone | 1 | 406 | 3.55M | Sep 2001 – Aug 2026 |