| Columbus Field Unit G-3-207033 | Rusk Energy Operating LLC only | Columbus (Consolidated) | Colorado | 1 | 54.6K | 110K | Dec 2004 – Apr 2026 |
| Cowden -31- O-10-31215 | Bustamante Resources LLC only | Cowden (Cisco) | Ector | 2 | 54.2K | 19 | Jan 1993 – Mar 2026 |
| Columbus Field Unit G-3-169484 | Rusk Energy Operating LLC only | Columbus (Consolidated) | Colorado | 1 | 54.1K | 914K | Jul 1998 – Aug 2024 |
| Toone 13-157 G-10-250781 | Crescent Energy Operating, LLC only | Bush (Permian) | Reeves | 1 | 52.1K | 6.1M | May 2009 – Dec 2025 |
| Forbus-McKinney OU C O-6-14979 | Buckhorn Operating LLC only | Angie,(pettet) | San Augustine | 1 | 51.4K | 480K | May 2010 – Jun 2024 |
| Smith O-10-22532 | Bustamante Oil Company only | Sheffield Townsite (Connell) | Pecos | 1 | 51.1K | 1.04K | Jan 1993 – Mar 2026 |
| Labus, T. O-2-2901 | Blackbrush O & G, Inc. only | Labus (Edwards, Upper) | Karnes | 2 | 50.9K | 80.2K | Jan 1993 – Apr 2004 |
| Buster Haggard "25" O-10-38346 | XTO Energy Inc. only | Spraberry (Trend Area) | Martin | 1 | 50.8K | 51.1K | Mar 2007 – Jun 2024 |
| Bussard 106 O-14-7715 | BE Anadarko II, LLC only | Lipscomb (Cleveland) | Lipscomb | 1 | 50.1K | 153K | Sep 2006 – Apr 2014 |
| Hastedt, Emma "B" G-3-165910 | Strand Energy, L.C. only | Columbus (Consolidated) | Colorado | 1 | 49.4K | 1.46M | Nov 1997 – Apr 2026 |
| Cedar Bush O-10-36447 | Endeavor Energy Resources L.P. only | Spraberry (Trend Area) | Martin | 1 | 48.4K | 157K | Oct 1997 – Jun 2020 |
| Bush North 24 O-9-21223 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Reagan | 1 | 48K | 383K | Jan 2021 – Apr 2026 |
| Martinez, D. S. G-4-136910 | Columbus Energy, LLC only | Clark Ranch (Lobo) | Webb | 1 | 47.4K | 6.73M | Jan 1993 – Apr 2026 |
| Cullen, H. R. et Al G-3-284589 | Strand Energy, L.C. only | Columbus (Consolidated) | Colorado | 1 | 47.1K | 1.79M | Apr 2018 – Apr 2026 |
| Albus, David O-13-24290 | Bettis, Boyle & Stovall only | Cross Tie, West | Knox | 1 | 46K | 54 | Jan 1993 – Feb 2016 |
| Kollman Heirs O-3-25639 | Strand Energy, L.C. only | Columbus (Consolidated) | Colorado | 1 | 45.5K | 1.05M | May 2010 – Apr 2026 |
| Rhode, D. W. 26 G-1-115105 | Columbus Energy, LLC only | Rhode (10,600 Wilcox) | McMullen | 1 | 45K | 3.48M | Jan 1993 – Aug 2015 |
| Columbus Townsite Gas Unit G-3-226437 | Hurd Enterprises, Ltd. only | Cecil Noble (Wilcox 10,300) | Colorado | 1 | 44.9K | 1.12M | Nov 2006 – Sep 2014 |
| Rhode, D. W. 26 G-1-119199 | Columbus Energy, LLC only | Rhode (10,600 Wilcox) | McMullen | 1 | 44.5K | 4.86M | Jan 1993 – Apr 2026 |
| Barnes, Perry V. O-3-24591 | Galloway Energy Co. only | Columbus, West (Wilcox 10-A) | Colorado | 1 | 43.8K | 2.19K | Aug 2004 – Nov 2019 |
| Buster O-10-34339 | Baker Operating, Inc. only | TXL (Wolfcamp, North) | Ector | 1 | 43.5K | 1.9K | Nov 1994 – Apr 2026 |
| Druesedow "C" O-8-19117 | Bustamante Resources LLC only | Corsica (Bend Conglomerate) | Stonewall | 1 | 43.4K | 27.9K | Jan 1993 – Mar 2026 |
| Bush-Warren Unit O-3-21469 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Brazos | 2 | 43.1K | 376K | Jan 1993 – Sep 2000 |
| Martinez, D.S. G-4-163520 | Columbus Energy, LLC only | Clark Ranch (Lobo) | Webb | 1 | 43K | 3.52M | Jun 1997 – Sep 2024 |
| Martinez, D.S. G-4-162129 | Columbus Energy, LLC only | Bashara-Hereford (7300) | Webb | 1 | 42.7K | 3.92M | Jan 1997 – Apr 2026 |
| Labus O-1-10634 | Virtex Operating Company, Inc. only | Marcelina Creek (Austin Chalk) | Wilson | 1 | 42.6K | 319 | Jan 1993 – Dec 2017 |
| Enderli, Busch O-3-17378 | King Operating Corporation only | Goose Creek | Harris | 2 | 41.8K | 37 | Jan 1993 – Sep 2019 |
| McKendrick, W.H. G-4-152807 | Columbus Energy, LLC only | Hereford (Lobo) | Webb | 1 | 40.5K | 4.72M | Oct 1994 – Oct 2004 |
| Turner Properties-Tubb O-9-8098 | Bustamante Oil Company only | Jameson (Strawn) | Coke | 4 | 40.3K | 120K | Jan 1993 – Mar 2026 |
| Acevedo-Haering G-4-143907 | Columbus Energy, LLC only | Volz (Lobo) | Webb | 1 | 40K | 6.76M | Jan 1993 – Apr 2026 |
| Harrington-Moore Unit O-3-20973 | Columbus Energy Corp. only | Sralla Road (Jackson 9050) | Harris | 1 | 38.8K | 486K | Jan 1993 – Nov 2002 |
| Duty Gas Unit G-2-175658 | Columbus Energy, LLC only | Maxine, E. (10,000) | Live Oak | 1 | 38.7K | 1.54M | Aug 1999 – Apr 2026 |
| Busher, H.F. et al A O-9-5703 | F&H Operating Company LLC only | Busher (Morris) | Runnels | 5 | 38.6K | 26K | Jan 1993 – Mar 2026 |
| Rhode, D. W. 26 G-1-119564 | Columbus Energy, LLC only | Rhode (10,600 Wilcox) | McMullen | 1 | 37.7K | 4.88M | Jan 1993 – Apr 2026 |
| Columbus Townsite GU G-3-280210 | Hurd Enterprises, Ltd. only | Cecil Noble (Wilcox 10,120) | Colorado | 1 | 37.5K | 1.48M | Jan 2015 – Apr 2025 |
| Bussard Cameron 74 O-14-9373 | Unbridled Resources, LLC only | Lipscomb (Cleveland) | Lipscomb | 1 | 37.1K | 228K | May 2014 – Feb 2026 |
| D.K.Z. Unit O-13-29965 | EOG Resources, Inc. only | Barnabus (Mississippian) | Cooke | 1 | 36.9K | 0 | Oct 2001 – Sep 2011 |
| Bush-Exxon O-10-28758 | 4N Affairs, LLC only | Netterville | Ward | 7 | 36.2K | 47.2K | Jan 1993 – Jun 2025 |
| Wiggins Unit G-3-161048 | Columbus Energy Corp. only | Sralla Road (Jackson, W.) | Harris | 1 | 36.1K | 2.3M | Nov 1996 – Jul 2003 |
| Karon Unit G-2-56531 | Columbus Energy, LLC only | Karon (Luling) | Live Oak | 1 | 36K | 4.77M | Jan 1993 – Apr 2026 |
| Briones, J.E. "A" G-4-147343 | Columbus Energy, LLC only | La Perla (Lobo Cons.) | Zapata | 1 | 35.6K | 12.3M | Nov 1993 – Apr 2026 |
| Janysek, Joe J. O-2-11194 | Enervest Operating, L.L.C. only | Labus (Austin) | Karnes | 1 | 35K | 38.9K | Apr 2014 – Oct 2017 |
| Henderson - State O-1-15058 | Columbus Energy, LLC only | Campana, South | McMullen | 1 | 35K | 0 | Mar 2009 – Feb 2025 |
| Laurel "A" G-4-150887 | Columbus Energy, LLC only | Cuba Libre (3RD Hinnant) | Webb | 1 | 34.8K | 1.53M | Oct 1994 – Jan 2007 |
| Hastedt, Emma G-3-149132 | Hilcorp Energy Company only | Columbus (12-E Wilcox) | Colorado | 1 | 34.2K | 1.22M | Apr 1994 – Nov 1997 |
| Laurel G-4-154266 | Columbus Energy, LLC only | Tom Shearman (8000) | Webb | 1 | 33.9K | 1.38M | Mar 1994 – Nov 2010 |
| Lindholm C S Gas Unit G-1-134358 | Columbus Energy, LLC only | Rhode (10,600 Wilcox) | McMullen | 1 | 33.6K | 3.74M | Jan 1993 – Apr 2026 |
| Bush-Stasny Unit O-3-21345 | Rme Petroleum Company only | Giddings (Austin Chalk-3) | Brazos | 1 | 33.5K | 267K | Jan 1993 – Jul 2000 |
| Moebes, Leona K. O-3-10774 | Mosaic Oil LLC only | Columbus (6-B Wilcox) | Colorado | 1 | 33.3K | 43.5K | Jan 1993 – Sep 2016 |
| Karon Unit G-2-115060 | Columbus Energy, LLC only | Karon (Luling) | Live Oak | 1 | 32.9K | 3.55M | Jan 1993 – Apr 2026 |