| J.C. Mann Gas Unit G-4-145065 | Dewbre Petroleum Corporation | Cadre (Vicksburg Patriot) | Hidalgo | 1 | 420K | 24.7M | Apr 1993 – Apr 2026 |
| Guerra, E.E. "A" G-4-121568 | Dewbre Petroleum Corporation | McAllen Ranch (Guerra) | Hidalgo | 1 | 295K | 18.6M | Jan 1993 – Apr 2026 |
| Guerra, E. E. G-4-138214 | Dewbre Petroleum Corporation | McAllen Ranch (Guerra) | Hidalgo | 1 | 155K | 9.7M | Jan 1993 – Feb 2004 |
| J.C. Mann Gas Unit G-4-146858 | Dewbre Petroleum Corporation | Cadre (Vicksburg Patriot) | Hidalgo | 1 | 132K | 11.9M | Sep 1993 – Apr 2026 |
| Jerico, Ltd. Gas Unit G-4-144942 | Dewbre Petroleum Corporation | Cadre (Vicksburg Patriot) | Hidalgo | 1 | 131K | 7.93M | Jan 1993 – Dec 2009 |
| Ames G.U. G-4-220917 | Dewbre Petroleum Corporation | Chile Vieja (Frio) | Willacy | 1 | 104K | 6.04M | Jul 2006 – Apr 2026 |
| Jerico Ltd.gas Unit G-4-175691 | Dewbre Petroleum Corporation | Cadre (Vicksburg Patriot) | Hidalgo | 1 | 102K | 4.91M | Dec 1999 – Apr 2026 |
| Ames et al GU G-4-222562 | Dewbre Petroleum Corporation | Chile Vieja (Frio) | Willacy | 1 | 98.3K | 5.79M | Sep 2006 – Apr 2026 |
| Stewart G-4-156253 | Dewbre Petroleum Corporation | Santa Rosa (10,700) | Kenedy | 1 | 82.1K | 7.32M | Nov 1995 – Apr 2026 |
| Palo Blanco Gas Unit G-4-233101 | Dewbre Petroleum Corporation | W. E. Colson (Vx. Bingo) | Brooks | 1 | 81.2K | 1.6M | Nov 2007 – Apr 2026 |
| Jerico Ltd Gas Unit G-4-217454 | Dewbre Petroleum Corporation | Cadre (Vicksburg Patriot) | Hidalgo | 1 | 77.4K | 4.38M | Mar 2006 – Apr 2026 |
| Jerico Ltd Gas Unit G-4-196646 | Dewbre Petroleum Corporation | Cadre (Vicksburg Patriot) | Hidalgo | 1 | 77.1K | 4.2M | Aug 2003 – Apr 2026 |
| Jerico Ltd. Gas Unit G-4-212867 | Dewbre Petroleum Corporation | Cadre (Vicksburg Patriot) | Hidalgo | 1 | 72.7K | 3.28M | Sep 2005 – Apr 2026 |
| Kerr et al GU G-4-247130 | Dewbre Petroleum Corporation | La Sal Vieja (Deep) | Willacy | 1 | 70.1K | 1.64M | Jan 2009 – Apr 2026 |
| Guerra Gas Unit (SCH) G-4-212381 | Dewbre Petroleum Corporation | Arrowhead (Alh Sand) | Hidalgo | 1 | 69.4K | 408K | Sep 2005 – Aug 2008 |
| Lefner et al GU G-4-230701 | Dewbre Petroleum Corporation | Chile Vieja (Frio) | Willacy | 1 | 68.2K | 3.47M | Sep 2007 – Aug 2022 |
| Lefner et al GU G-4-233177 | Dewbre Petroleum Corporation | Chile Vieja (Frio) | Willacy | 1 | 67K | 3.8M | Nov 2007 – Apr 2020 |
| Guerra, E.E. Jr G-4-122046 | Dewbre Petroleum Corporation | McAllen Ranch (Guerra) | Hidalgo | 1 | 55.8K | 6.16M | Jan 1993 – Mar 2015 |
| Lefner et al Gas Unit G-4-238507 | Dewbre Petroleum Corporation | Chile Vieja (Frio) | Willacy | 1 | 53.1K | 2.9M | Apr 2008 – Apr 2026 |
| Simons G-4-192519 | Dewbre Petroleum Corporation | Midway, South (Consolidated) | San Patricio | 1 | 52.6K | 990K | Oct 2002 – Apr 2017 |
| J. C. Mann Gas Unit G-4-191413 | Dewbre Petroleum Corporation | Cadre (Vicksburg Patriot) | Hidalgo | 1 | 52.4K | 2.75M | Feb 2003 – Dec 2007 |
| Degoche, Louise G-4-256218 | Dewbre Petroleum Corporation | Landa (Marks) | Hidalgo | 1 | 48K | 10.5M | May 2010 – Apr 2026 |
| Guerra "a" Gas Unit G-4-126509 | Dewbre Petroleum Corporation | McAllen Ranch (Guerra) | Hidalgo | 1 | 42.7K | 3.24M | Jan 1993 – Aug 2001 |
| Palo Blanco Gas Unit G-4-230861 | Dewbre Petroleum Corporation | W. E. Colson (Vx. Bingo) | Brooks | 1 | 42.5K | 433K | May 2007 – Dec 2016 |
| Beaurline G-4-218823 | Dewbre Petroleum Corporation | McAllen Ranch (Vksbg W-Y) | Hidalgo | 1 | 41.3K | 1.63M | Mar 2006 – Apr 2026 |
| Guerra, E. E. G-4-139523 | Dewbre Petroleum Corporation | McAllen Ranch (Guerra) | Hidalgo | 1 | 37.4K | 5.12M | Jan 1993 – Mar 2019 |
| Palo Blanco Gas Unit G-4-226381 | Dewbre Petroleum Corporation | W. E. Colson (Vx. Bingo) | Brooks | 1 | 37.3K | 1.57M | Mar 2007 – Apr 2026 |
| Dorotik G-3-150118 | Dewbre Petroleum Corporation | New Taiton (Meek) | Wharton | 1 | 36.2K | 1.22M | Mar 1994 – Mar 2001 |
| Henderson, J.W. et al Gas Unit G-4-237330 | Dewbre Petroleum Corporation | La Sal Vieja (Frio L) | Willacy | 1 | 34.9K | 3.77M | Mar 2008 – Apr 2026 |
| Guerra, E.E. G-4-249521 | Dewbre Petroleum Corporation | McAllen Ranch (Guerra) | Hidalgo | 1 | 34.5K | 4.52M | Apr 2009 – Apr 2026 |
| Guerra "a" Gas Unit G-4-208729 | Dewbre Petroleum Corporation | McAllen Ranch (Guerra) | Hidalgo | 1 | 33.4K | 2.61M | Mar 2005 – Apr 2015 |
| Palo Blanco Gas Unit G-4-226382 | Dewbre Petroleum Corporation | W. E. Colson (Vx. Bingo) | Brooks | 1 | 32.8K | 947K | Mar 2007 – Jun 2022 |
| Wrightsman, et al GU G-4-252519 | Dewbre Petroleum Corporation | Chile Vieja (Frio) | Willacy | 1 | 32.2K | 1.28M | Oct 2009 – Apr 2026 |
| Beaurline G-4-225759 | Dewbre Petroleum Corporation | McAllen Ranch (Vksbg W-Y) | Hidalgo | 1 | 31.9K | 1.3M | Sep 2006 – Apr 2026 |
| Sorrells et Al G-4-248355 | Dewbre Petroleum Corporation | La Sal Vieja (Frio Cons) | Willacy | 1 | 31.9K | 1.54M | Apr 2009 – Jun 2025 |
| Ames et al GU G-4-244685 | Dewbre Petroleum Corporation | Chile Vieja (Frio) | Willacy | 1 | 31.4K | 3.55M | Dec 2008 – Apr 2026 |
| Slick Estate '527' G-4-192378 | Dewbre Petroleum Corporation | Rincon, E. (Deep 8550) | Starr | 1 | 29.8K | 2.06M | Jan 2003 – Nov 2014 |
| Stewart G-4-151377 | Dewbre Petroleum Corporation | Santa Rosa (10,700) | Kenedy | 1 | 29.3K | 3.64M | Aug 1994 – Apr 2026 |
| Guerra, E. E. "A" G-4-254434 | Dewbre Petroleum Corporation | McAllen Ranch (Guerra) | Hidalgo | 1 | 28.8K | 2.76M | Jan 2010 – Apr 2026 |
| Bondy GU G-4-226742 | Dewbre Petroleum Corporation | Chile Vieja (Frio Deep) | Willacy | 1 | 28K | 1.98M | Aug 2006 – Apr 2026 |
| Lefner et al Gas Unit G-4-273104 | Dewbre Petroleum Corporation | Chile Vieja (Frio) | Willacy | 1 | 27.5K | 1.46M | Jan 2014 – Apr 2026 |
| Guerra, E. E. G-4-189388 | Dewbre Petroleum Corporation | McAllen Ranch (Guerra) | Hidalgo | 1 | 27.1K | 2.1M | May 2002 – Apr 2023 |
| Beaurline G-4-233197 | Dewbre Petroleum Corporation | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 24.6K | 643K | Nov 2007 – Jan 2015 |
| Bass, Lee M., Inc. G-4-201498 | Dewbre Petroleum Corporation | Canelo (I-08) | Kleberg | 1 | 24K | 2.6M | Jul 2004 – Jun 2010 |
| Valderas Gas Unit G-4-193927 | Dewbre Petroleum Corporation | Mercedes (11000) | Hidalgo | 1 | 24K | 2.07M | Mar 2003 – Sep 2017 |
| Rhodes Unit G-4-226323 | Dewbre Petroleum Corporation | Landa (Marks) | Hidalgo | 1 | 23.7K | 1.94M | Dec 2006 – Apr 2026 |
| Lockhart Gas Unit G-4-156931 | Dewbre Petroleum Corporation | Weslaco, North (Frio Cons.) | Hidalgo | 1 | 22.9K | 2.18M | Jan 1996 – Apr 2026 |
| Stewart G-4-160038 | Dewbre Petroleum Corporation | Santa Rosa (10,700) | Kenedy | 1 | 22.6K | 2.27M | Sep 1996 – Apr 2026 |
| Ballard G-4-213311 | Dewbre Petroleum Corporation | Calallen (8300 Sand) | Nueces | 1 | 21K | 894K | Aug 2005 – Dec 2008 |
| Guerra, E. E. "A" G-4-254900 | Dewbre Petroleum Corporation | McAllen Ranch (Guerra) | Hidalgo | 1 | 21K | 2.43M | Feb 2010 – Apr 2026 |