| Wardner, G.P. O-4-12618 | Urban Oil & Gas Group, LLC only | Stratton (Consolidated) | Nueces | 52 | 855K | 6.61M | May 1996 – Apr 2026 |
| Urbanczyk Unit O-2-9831 | EOG Resources, Inc. only | Eagleville (Eagle Ford-2) | Karnes | 7 | 677K | 1.17M | Oct 2011 – Apr 2026 |
| Von Blucher G-4-129375 | Urban Oil & Gas Group, LLC only | Brayton, N. (Vicksburg 11100) | Nueces | 1 | 611K | 8M | Jan 1993 – Dec 2003 |
| Von Blucher G-4-136027 | Urban Oil & Gas Group, LLC only | Brayton, N. (Vicksburg 11100) | Nueces | 1 | 404K | 5.19M | Jan 1993 – Apr 2017 |
| Urbanovsky Unit O-3-22556 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Burleson | 3 | 372K | 232K | Oct 1994 – Mar 2026 |
| La Jolla G-4-145366 | Urban Oil & Gas Group, LLC only | Brayton, N. (Vicksburg 11100) | Nueces | 1 | 210K | 2.08M | Mar 1993 – Dec 2003 |
| K. Urbanovsky 136 O-3-26758 | Wildfire Energy Operating LLC only | Giddings (Eagleford) | Burleson | 1 | 201K | 51K | Jan 2015 – Mar 2026 |
| Smith 34 O-10-37346 | Urban Oil & Gas Group, LLC only | Sheffield Townsite (Connell) | Pecos | 1 | 199K | 135K | Jun 2004 – Jun 2025 |
| Urban Jones 122 O-14-8617 | Presidio Petroleum LLC only | Pan Petro (Cleveland) | Ochiltree | 4 | 194K | 1.15M | May 2012 – Apr 2026 |
| Willis Estate G-3-202098 | Urban Oil & Gas Group, LLC only | Felicia (Yegua) | Liberty | 1 | 172K | 4.68M | Apr 2004 – Aug 2021 |
| Driscoll, Clara O-4-5486 | Urban Oil & Gas Group, LLC only | Agua Dulce (7050) | Nueces | 2 | 163K | 370K | Jan 1993 – Apr 2026 |
| Jones Urban 93 O-14-8424 | Courson Oil & Gas, Inc. only | Pan Petro (Cleveland) | Ochiltree | 3 | 161K | 1.81M | Nov 2010 – Apr 2026 |
| Urbanosky O-3-27471 | Wildfire Energy Operating LLC only | Giddings (Eagleford) | Burleson | 1 | 161K | 330K | Apr 2018 – Mar 2026 |
| Bob Urban 92 O-14-8133 | Courson Oil & Gas, Inc. only | Pan Petro (Cleveland) | Ochiltree | 4 | 152K | 818K | Mar 2010 – Apr 2026 |
| Courson Urban 108 O-14-9759 | Mewbourne Oil Company only | Pan Petro (Cleveland) | Ochiltree | 1 | 152K | 706K | Sep 2021 – Apr 2026 |
| Lightsey-Urbanowsky Unit O-3-14240 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Burleson | 2 | 149K | 241K | Jan 1993 – Apr 2026 |
| Elliff, J. S. Etal O-4-13012 | Urban Oil & Gas Group, LLC only | Agua Dulce (Consolidated Frio) | Nueces | 5 | 148K | 1.01M | Mar 2001 – Jul 2023 |
| Willis Estate G-3-204035 | Urban Oil & Gas Group, LLC only | Felicia (Yegua) | Liberty | 1 | 142K | 4.04M | Aug 2004 – Apr 2016 |
| Urbanczyk O-1-16171 | Warwick-Artemis, LLC only | Eagleville (Eagle Ford-1) | Wilson | 1 | 135K | 34K | May 2012 – Apr 2026 |
| Chapman Ranch G-4-214728 | Urban Oil & Gas Group, LLC only | Mobil-David (Frio 12,600) | Nueces | 1 | 134K | 6.15M | Aug 2005 – Apr 2010 |
| Blucher, Von G-4-146276 | Urban Oil & Gas Group, LLC only | Brayton, N. (Vicksburg 11,500) | Nueces | 1 | 133K | 1.66M | Jul 1993 – May 2017 |
| Anton Urbanczyk O-1-16461 | Warwick-Artemis, LLC only | Eagleville (Eagle Ford-1) | Wilson | 1 | 133K | 39.6K | May 2012 – Apr 2026 |
| Cobb, F. G. -B- O-3-9500 | Urban Oil & Gas Group, LLC only | Bay City (8500 Frio) | Matagorda | 3 | 132K | 281K | Jan 1993 – Sep 2018 |
| Parker, Sarah Unit O-5-3657 | Urban Oil & Gas Group, LLC only | City Limits (Rodessa) | Henderson | 1 | 129K | 1.07M | Feb 1999 – Jul 2021 |
| Jones Urban 93 O-14-8003 | Holmes Exploration, LLC only | Stekoll (Cleveland) | Ochiltree | 2 | 126K | 552K | May 2009 – Jul 2012 |
| Urbanczyk O-14-2720 | Henry Paul Petroleum, LLC only | Panhandle Gray County Field | Gray | 11 | 123K | 68.7K | Jan 1993 – Aug 2025 |
| Urban Tenneco O-2-6626 | Rawhide Operating, Inc. only | Pridham Lake, West (Catahoula) | Victoria | 3 | 121K | 22 | Jan 1993 – Nov 2002 |
| Langham, Emily "A" G-3-154380 | Energy Twenty Operating LLC only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 113K | 4.06M | Jan 1995 – Jan 2020 |
| Swilley G-3-209497 | Urban Oil & Gas Group, LLC only | Hull * | Liberty | 1 | 108K | 4.76M | May 2005 – Sep 2023 |
| Pena-Urbanczyk B O-1-20889 | Warwick-Artemis, LLC only | Eagleville (Eagle Ford-1) | Wilson | 1 | 107K | 53.4K | Nov 2022 – Apr 2026 |
| Roger Hoffman G U "A" O-4-13283 | Urban Oil & Gas Group, LLC only | Ben Bolt (5950) | Jim Wells | 2 | 102K | 503K | Jan 2005 – Apr 2026 |
| Mae-Urbanovsky O-3-18802 | Ginger Petroleum Company, Inc. only | Giddings (Austin Chalk-3) | Burleson | 1 | 98.1K | 649K | Jan 1993 – Oct 2017 |
| Ambrose Urbanczyk O-1-17287 | Warwick-Artemis, LLC only | Eagleville (Eagle Ford-1) | Wilson | 1 | 97.6K | 24K | Nov 2013 – Apr 2026 |
| Langham, Emily -A- G-3-128836 | Energy Twenty Operating LLC only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 90K | 3.18M | Jan 1993 – May 2016 |
| Willis Estate G-3-202957 | Urban Oil & Gas Group, LLC only | Felicia (Yegua) | Liberty | 1 | 90K | 2.54M | May 2004 – Nov 2020 |
| Langham, Emily "A" G-3-53953 | Energy Twenty Operating LLC only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 85.2K | 3.2M | Jan 1993 – Jan 2020 |
| Bob Urban 92 O-14-8006 | Holmes Exploration, LLC only | Stekoll (Cleveland) | Ochiltree | 1 | 83.6K | 168K | Jun 2009 – Apr 2011 |
| Cobb, F. G. -B- O-3-9493 | Urban Oil & Gas Group, LLC only | Bay City (8200 Frio) | Matagorda | 7 | 81.7K | 105K | Jan 1993 – Jun 2006 |
| Elsik-Urbanovsky O-3-20919 | Anadarko E&P Company LP only | Giddings (Austin Chalk-3) | Burleson | 1 | 79.7K | 1.28M | Jan 1993 – Dec 2000 |
| Gruene, O.A. O-4-12623 | Urban Oil & Gas Group, LLC only | Stratton (Consolidated) | Nueces | 2 | 72.3K | 51K | Nov 1996 – Apr 2026 |
| Urban-Bracey OU #1 O-3-27945 | Enhanced Energy Partners Corp only | Raccoon Bend (Woodley) | Austin | 1 | 71.3K | 1.02K | Feb 2022 – Apr 2026 |
| Bush Wofford "F" O-4-13063 | Urban Oil & Gas Group, LLC only | Stratton (Consolidated) | Nueces | 1 | 71.1K | 305K | Dec 2001 – Apr 2026 |
| Schroeder, T. S. O-4-13118 | Urban Oil & Gas Group, LLC only | Agua Dulce (6650) | Nueces | 1 | 71.1K | 722K | Sep 2002 – Jan 2010 |
| Rivers, "C" O-4-12624 | Urban Oil & Gas Group, LLC only | Stratton (Consolidated) | Nueces | 1 | 67.1K | 175K | Nov 1996 – Jun 2005 |
| Tidal Urbanczyk O-1-15465 | Warwick-Artemis, LLC only | Eagleville (Eagle Ford-1) | Wilson | 1 | 66.7K | 3.21K | Jul 2011 – Apr 2026 |
| Suburban O-3-22532 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Lee | 2 | 64.2K | 266K | Aug 1994 – Aug 2009 |
| J. A. Boyett Oil Well O-6-15471 | Urban Oil & Gas Group, LLC only | Trawick (Rodessa) | Nacogdoches | 1 | 64.1K | 121K | Jan 2016 – Apr 2026 |
| Blucher, Von G-4-147259 | Urban Oil & Gas Group, LLC only | Brayton, N. (Vicksburg 11,500) | Nueces | 1 | 60.7K | 870K | Oct 1993 – Mar 2026 |
| Emily Langham "A" G-3-241771 | Orx Resources, L.L.C. only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 54.9K | 1.82M | Jun 2008 – Apr 2026 |
| Urban O-3-27877 | Horizon Prod. and Operating, LLC only | Dayton, East (Yegua EY-1) | Liberty | 1 | 54.7K | 28.1K | May 2021 – Mar 2026 |