| Beaurline G-4-225759 | Dewbre Petroleum Corporation | McAllen Ranch (Vksbg W-Y) | Hidalgo | 1 | 32.2K | 1.31M | Sep 2006 – Aug 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 | 3.56M | Dec 2008 – Aug 2026 |
| Slick Estate '527' G-4-192378 | Dewbre Petroleum Corporation | Rincon, E. (Deep 8550) | Starr | 1 | 29.8K | 2.06M | Jan 2003 – Nov 2014 |
| Rackley-Rutland O-4-10495 | Dewbre Petroleum Corporation | Clara Driscoll, S. (5040) | Nueces | 1 | 29.5K | 7.12K | by Jan 1993 – Mar 2014 |
| Stewart G-4-151377 | Dewbre Petroleum Corporation | Santa Rosa (10,700) | Kenedy | 1 | 29.3K | 3.64M | Aug 1994 – Aug 2026 |
| Guerra, E. E. "A" G-4-254434 | Dewbre Petroleum Corporation | McAllen Ranch (Guerra) | Hidalgo | 1 | 29.1K | 2.79M | Jan 2010 – Aug 2026 |
| Mobil - Arco O-4-11392 | Dewbre Petroleum Corporation | Premont, East (Valentine) | Jim Wells | 1 | 28.3K | 24.7K | by Jan 1993 – Feb 2003 |
| Bondy GU G-4-226742 | Dewbre Petroleum Corporation | Chile Vieja (Frio Deep) | Willacy | 1 | 28.2K | 2M | Aug 2006 – Aug 2026 |
| Lefner et al Gas Unit G-4-273104 | Dewbre Petroleum Corporation | Chile Vieja (Frio) | Willacy | 1 | 27.6K | 1.48M | Jan 2014 – Aug 2026 |
| Guerra, E. E. G-4-189388 | Dewbre Petroleum Corporation | McAllen Ranch (Guerra) | Hidalgo | 1 | 27.1K | 2.1M | May 2002 – Apr 2023 |
| Valderas Gas Unit O-4-13327 | Dewbre Petroleum Corporation | Mercedes (11000) | Hidalgo | 1 | 27K | 375K | Jun 2005 – Jul 2009 |
| Mobil-Arco Unit O-4-10637 | Dewbre Petroleum Corporation | Premont, South (Zone 17-C) | Jim Wells | 2 | 26.4K | 14.9K | by Jan 1993 – Sep 2001 |
| Dragon, Tillie O-2-3290 | Dewbre Petroleum Corporation | Person (Edwards) | Karnes | 1 | 25.5K | 41.5K | by Jan 1993 – Sep 1997 |
| Holbein O-4-9688 | Dewbre Petroleum Corporation | Los Cuates Ranch (Cole 4360) | Jim Hogg | 4 | 25.3K | 36 | by Jan 1993 – Mar 2000 |
| Beaurline G-4-233197 | Dewbre Petroleum Corporation | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 24.6K | 643K | Nov 2007 – Jan 2015 |
| Gayle O-3-25089 | Dewbre Petroleum Corporation | Baileys Prairie (Frio -J- Sand) | Brazoria | 1 | 24K | 103K | Sep 2007 – Feb 2012 |
| 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 |
| Tullis, Henry O-2-5224 | Dewbre Petroleum Corporation | Texam, E. (Slick) | Live Oak | 6 | 23.8K | 66.9K | by Jan 1993 – Jun 1998 |
| Lockhart Gas Unit G-4-156931 | Dewbre Petroleum Corporation | Weslaco, North (Frio Cons.) | Hidalgo | 1 | 22.9K | 2.18M | Jan 1996 – Aug 2026 |
| Stewart G-4-160038 | Dewbre Petroleum Corporation | Santa Rosa (10,700) | Kenedy | 1 | 22.7K | 2.28M | Sep 1996 – Aug 2026 |
| Shell, Alma Davis O-4-9332 | Dewbre Petroleum Corporation | Midway, S. (Dubose) | San Patricio | 1 | 21.8K | 101K | by Jan 1993 – May 2010 |
| 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 – Aug 2026 |
| Heard O-4-13399 | Dewbre Petroleum Corporation | Rincon, E. (Frio 4200) | Starr | 2 | 20.3K | 428 | Jun 2006 – Aug 2026 |
| Wrightsman, et al GU G-4-256329 | Dewbre Petroleum Corporation | Chile Vieja (Frio) | Willacy | 1 | 20K | 974K | May 2010 – Aug 2026 |
| Flack Unit G-4-236859 | Dewbre Petroleum Corporation | W. E. Colson (Vx. Bingo) | Brooks | 1 | 19.5K | 1.39M | Dec 2007 – Aug 2026 |
| Kathryn O-2-8484 | Dewbre Petroleum Corporation | Hilly Desire (Wilcox A) | De Witt | 2 | 19.3K | 87.8K | Oct 1999 – May 2015 |
| Henderson, J.W. et al Gas Unit G-4-216710 | Dewbre Petroleum Corporation | La Sal Vieja (Deep) | Willacy | 1 | 18.9K | 1.8M | Dec 2005 – Aug 2026 |
| Harris Gas Unit O-4-12986 | Dewbre Petroleum Corporation | Weslaco, North (Frio Cons.) | Hidalgo | 1 | 18.9K | 9.74K | Aug 2000 – Nov 2011 |
| Guerra, E. E. G-4-141999 | Dewbre Petroleum Corporation | McAllen Ranch (Guerra) | Hidalgo | 1 | 18.7K | 4.43M | by Jan 1993 – Oct 2007 |
| Valderas Gas Unit G-4-223689 | Dewbre Petroleum Corporation | Mercedes (11000) | Hidalgo | 1 | 18.5K | 779K | Nov 2006 – Jun 2013 |
| Lockhart Gas Unit G-4-187690 | Dewbre Petroleum Corporation | Weslaco, North (Frio Cons.) | Hidalgo | 1 | 18.4K | 407K | Feb 2002 – Aug 2026 |
| Dougherty/Eia Unit 2 G-4-137983 | Dewbre Petroleum Corporation | Jicarilla (I-2) | Hidalgo | 1 | 18.4K | 1.45M | by Jan 1993 – Aug 2026 |
| Flato O-4-13959 | Dewbre Petroleum Corporation | Ricardo, E. (5100) | Kleberg | 1 | 18.2K | 0 | Jan 2015 – Aug 2026 |
| Porter O-2-9639 | Dewbre Petroleum Corporation | Argenta (3000) | Live Oak | 1 | 17.7K | 0 | Feb 2011 – Aug 2026 |
| Thomson-Barrow O-2-8789 | Dewbre Petroleum Corporation | Papalote, E. (3250 -B-) | Bee | 1 | 16.8K | 0 | May 2003 – Jun 2013 |
| SNP, et al GU G-4-254428 | Dewbre Petroleum Corporation | Chile Vieja (Frio) | Willacy | 1 | 16.7K | 1.01M | Jan 2010 – Aug 2022 |
| Guerra, E. E. G-4-183944 | Dewbre Petroleum Corporation | McAllen Ranch (Guerra) | Hidalgo | 1 | 16.3K | 4.49M | Jul 2001 – Aug 2026 |
| Thomas Unit G-4-223510 | Dewbre Petroleum Corporation | Riggan (F-20) | Willacy | 1 | 15.9K | 859K | Sep 2006 – Oct 2020 |
| Urbanczyk -A- O-2-7299 | Dewbre Petroleum Corporation | Person (Edwards) | Karnes | 1 | 15.9K | 272K | by Jan 1993 – Mar 2008 |
| Lockhart Gas Unit G-4-134214 | Dewbre Petroleum Corporation | Weslaco, North (Frio Cons.) | Hidalgo | 1 | 15.9K | 2.34M | by Jan 1993 – Aug 2026 |
| Lawson G-2-237632 | Dewbre Petroleum Corporation | Cabeza Creek, S. (Cook MT E) | Goliad | 1 | 15.8K | 109K | Aug 2008 – Nov 2014 |
| Pate Gas Unit 1 G-4-10910 | Dewbre Petroleum Corporation | Hidalgo, West (la Frontera) | Hidalgo | 1 | 15.7K | 2.04M | by Jan 1993 – Aug 2026 |
| Guerra, E. E. G-4-143900 | Dewbre Petroleum Corporation | McAllen Ranch (Guerra) | Hidalgo | 1 | 14.7K | 5.35M | by Jan 1993 – Aug 2026 |
| Morrison G-3-193085 | Dewbre Petroleum Corporation | Bernard, W. (7850) | Wharton | 1 | 13.7K | 796K | Nov 2002 – Jul 2008 |
| Moos Heirs "21" O-4-13580 | Dewbre Petroleum Corporation | Tal Vez, East (Queen City) | Webb | 1 | 13.5K | 495 | Nov 2009 – Aug 2015 |
| J.C. Mann Gas Unit G-4-150211 | Dewbre Petroleum Corporation | Cadre (Vicksburg Patriot) | Hidalgo | 1 | 13.2K | 3.71M | Jun 1994 – Oct 2006 |
| Dougherty/Eia, Unit No. 2 G-4-185830 | Dewbre Petroleum Corporation | Jicarilla (I-2) | Hidalgo | 1 | 13.2K | 991K | May 2001 – Aug 2026 |