| Rancho Blanco G-4-159114 | Columbus Energy, LLC only | Rancho Blanco (Lobo) | Webb | 1 | 5.04K | 1.67M | Jun 1996 – Aug 2026 |
| Albus/Hacker Unit O-13-26746 | Bitter Creek Petroleum Co. only | Bobby B (Tann) | Knox | 1 | 4.95K | 21 | by Jan 1993 – Oct 1999 |
| Hartgrove - Rose O-9-13195 | P,b&b Operating Inc. only | Bussey (1000) | Concho | 3 | 4.94K | 81 | by Jan 1993 – Feb 2016 |
| Bernardo Bustamante G.U. G-4-218454 | Killam Oil Co., Ltd. only | Jennings (Wilcox Consolidated) | Zapata | 1 | 4.92K | 930K | Jan 2006 – Jan 2016 |
| State Bush O-10-32970 | Triple "N" Services, Inc. only | Worsham (Delaware Sand) | Reeves | 1 | 4.92K | 14.8K | by Jan 1993 – Jan 1998 |
| Dilworth Gas Unit G-2-124043 | Columbus Energy, LLC only | Karon (Mackhank) | Live Oak | 1 | 4.92K | 573K | by Jan 1993 – Oct 1999 |
| Columbus Field Unit G-3-175650 | Rusk Energy Operating LLC only | Columbus (Consolidated) | Colorado | 1 | 4.92K | 345K | Jan 2000 – Aug 2026 |
| Dilworth Unit-WN G-2-42748 | Columbus Energy, LLC only | Karon (Slick) | Live Oak | 1 | 4.88K | 842K | by Jan 1993 – Mar 2022 |
| Holbein, R., Unit 2 G-4-14643 | Columbus Energy, LLC only | Thompsonville, NE (Wilcox 9500) | Jim Hogg | 1 | 4.82K | 3.16M | by Jan 1993 – Jun 2008 |
| Columbus Field Unit G-3-173112 | Daylight Petroleum LLC only | Columbus (Consolidated) | Colorado | 1 | 4.76K | 252K | Apr 1999 – Sep 2019 |
| Schwarz G-4-112634 | Columbus Energy, LLC only | San Idelfonso (Lobo) | Webb | 1 | 4.72K | 1.05M | by Jan 1993 – Aug 2026 |
| McMullen Oil & Royalty G-2-126562 | Three J Energy, Inc. only | Labus (Edwards, Upper) | Karnes | 1 | 4.67K | 135K | by Jan 1993 – Jan 2024 |
| Hereford G-4-63913 | Columbus Energy, LLC only | Laredo (Lobo) | Webb | 1 | 4.64K | 1.35M | by Jan 1993 – May 2016 |
| Benavides, Rosa V. 1927 G-4-122905 | Columbus Energy, LLC only | Benavides (Lobo Cons.) | Webb | 1 | 4.63K | 505K | by Jan 1993 – Dec 2001 |
| Hastedt, Emma G-3-149932 | Hilcorp Energy Company only | Columbus (6750 Wilcox) | Colorado | 1 | 4.54K | 192K | Apr 1994 – Nov 1997 |
| Connaway, Delbert O-8-13896 | Bustamante Oil Company only | Brown County Regular | Brown | 8 | 4.54K | 161 | by Jan 1993 – Jan 2025 |
| Stewart, Maco A G-3-161674 | Columbus Energy, LLC only | Dickinson (Frio Cons.) | Galveston | 1 | 4.53K | 727K | Nov 1996 – Jul 2010 |
| Columbus Field Unit G-3-174793 | Devon Energy Production Co, L.P. only | Columbus (Consolidated) | Colorado | 1 | 4.5K | 123K | Aug 1999 – Dec 2004 |
| Karon Luling Unit G-2-156839 | Columbus Energy, LLC only | Karon (Luling) | Live Oak | 1 | 4.47K | 112K | Dec 1995 – Mar 2016 |
| Hachar, D.D. G-4-164723 | Columbus Energy, LLC only | Clark Ranch (Lobo) | Webb | 1 | 4.44K | 2.08M | Aug 1997 – Aug 2026 |
| Lindholm 84 G-1-175754 | Columbus Energy, LLC only | Rhode Ranch, W. (MH-1) | McMullen | 1 | 4.4K | 672K | Oct 1999 – Aug 2026 |
| Rancho Blanco G-4-194698 | Columbus Energy, LLC only | Rancho Blanco (Lobo) | Webb | 1 | 4.37K | 1.19M | Apr 2003 – Aug 2026 |
| Wright, L.A. G-4-146324 | Columbus Energy Corp. only | Aguas Calientes (Lobo 1) | Webb | 1 | 4.35K | 755K | Aug 1993 – Sep 1999 |
| Hubberd G-4-149895 | Columbus Energy, LLC only | Liz (9200) | Webb | 1 | 4.34K | 3.4M | Jun 1994 – Aug 2026 |
| Hubberd, William "C1" G-4-143493 | Columbus Energy, LLC only | Hubberd (Lobo) | Webb | 1 | 4.33K | 1.4M | by Jan 1993 – Aug 2026 |
| Columbus Field Unit G-3-173562 | Devon Energy Operating Co., L.P. only | Columbus (Consolidated) | Colorado | 1 | 4.3K | 311K | May 1999 – Jul 2002 |
| Bayou Development B G-3-160237 | Columbus Energy, LLC only | Dickinson (Frio Cons.) | Galveston | 1 | 4.29K | 760K | Oct 1996 – Feb 2010 |
| Hubberd, William -D- G-4-66465 | Columbus Energy, LLC only | Laredo (8080) | Webb | 1 | 4.27K | 1.39M | by Jan 1993 – Aug 2026 |
| Columbus Field Unit G-3-171940 | Devon Energy Production Co, L.P. only | Columbus (Consolidated) | Colorado | 1 | 4.26K | 343K | Dec 1998 – May 2005 |
| Alexander, Charles G-4-192783 | Columbus Energy, LLC only | Hubberd (Lobo) | Webb | 1 | 4.25K | 2.77M | Oct 2002 – Aug 2026 |
| Hubberd G-4-214173 | Columbus Energy, LLC only | Hubberd (Lobo) | Webb | 1 | 4.25K | 1.54M | Oct 2005 – Aug 2026 |
| Hubberd G-4-184631 | Columbus Energy, LLC only | Hubberd (Lobo) | Webb | 1 | 4.25K | 766K | Jun 2001 – Aug 2026 |
| Maco-Stewart G-3-210108 | Columbus Energy, LLC only | Dickinson (Frio Cons.) | Galveston | 1 | 4.2K | 663K | Nov 2004 – Mar 2013 |
| Hubberd, William "B2" G-4-189705 | Columbus Energy, LLC only | Hubberd (Lobo) | Webb | 1 | 4.16K | 991K | Mar 2002 – Feb 2015 |
| Varibus G-5-146833 | Hilcorp Energy Company only | Bear Grass (Travis Peak) | Leon | 1 | 4.14K | 2.58M | Sep 1993 – Aug 2026 |
| McKendrick G-4-74076 | Columbus Energy, LLC only | Laredo (Lobo) | Webb | 1 | 4.1K | 1.27M | by Jan 1993 – Jul 2008 |
| Hubberd G-4-201869 | Columbus Energy, LLC only | Hubberd (Lobo) | Webb | 1 | 4.1K | 1.75M | Mar 2004 – Aug 2026 |
| Alexander, Charles D. G-4-60110 | Columbus Energy, LLC only | Laredo (Lobo) | Webb | 1 | 4.09K | 952K | by Jan 1993 – Aug 2026 |
| Menzies O-9-17294 | Bustamante Resources LLC only | Wilhelm Lane (Goen) | Menard | 1 | 4.09K | 143K | Dec 2010 – Jul 2026 |
| Bush, J. B. O-5-2543 | Thurston Texas Operating Co LLC only | Corsicana (Shallow) | Navarro | 3 | 4.08K | 31 | by Jan 1993 – Jul 2020 |
| Alexander, Charles G-4-200081 | Columbus Energy, LLC only | Hubberd (Lobo) | Webb | 1 | 4.06K | 996K | Nov 2003 – Aug 2026 |
| Hastedt, Emma "B" O-3-22524 | Hilcorp Energy Company only | Columbus (11-C) | Colorado | 1 | 4K | 9.98K | Sep 1994 – Dec 1995 |
| Busy B Gas Unit G-5-259905 | Atlas Operating LLC only | Bear Grass (Travis Peak) | Leon | 1 | 4K | 821K | Jul 2010 – Jun 2026 |
| Hinyard O-10-23088 | Bustos, Martin Oil only | Hinyard (Queen) | Pecos | 12 | 3.97K | 10 | Dec 1993 – Jan 1999 |
| Bayou Development B G-3-198557 | Columbus Energy, LLC only | Dickinson (Frio Cons.) | Galveston | 1 | 3.96K | 926K | Sep 2003 – Nov 2006 |
| McKendrick, W. H. G-4-204583 | Columbus Energy, LLC only | Hereford (Lobo) | Webb | 1 | 3.89K | 1.49M | Aug 2004 – Aug 2026 |
| Arco et al-Humble Fee G-4-48643 | Columbus Energy, LLC only | Seven Sisters, East ( 9500) | Duval | 1 | 3.85K | 3.6M | by Jan 1993 – Aug 2026 |
| Clark, N.H. G-4-147417 | Columbus Energy, LLC only | Clark Ranch (Lobo) | Webb | 1 | 3.83K | 1.3M | Nov 1993 – Aug 2026 |
| Varibus G-5-131550 | Hilcorp Energy Company only | Bear Grass (Travis Peak) | Freestone | 1 | 3.81K | 2.85M | by Jan 1993 – Aug 2026 |
| Stewart, Maco A G-3-203349 | Columbus Energy, LLC only | Dickinson (Frio Cons.) | Galveston | 1 | 3.8K | 1.27M | May 2004 – Jul 2010 |