| Amarilla, Rosa G-4-169717 | Varas Energy Operating Company, only | Santa Ana (Marks) | Hidalgo | 1 | 944K | 17.6M | Jul 1998 – Aug 2026 |
| Santa Ana G-4-169296 | Varas Energy Operating Company, only | Santa Ana (Marks) | Hidalgo | 1 | 582K | 9.98M | Jun 1998 – Aug 2026 |
| J.C. Mann Gas Unit G-4-145065 | Dewbre Petroleum Corporation only | Cadre (Vicksburg Patriot) | Hidalgo | 1 | 420K | 24.7M | Apr 1993 – Aug 2026 |
| Jerico, Ltd. Gas Unit G-4-142222 | Shell Western E&P only | Cadre (Vicksburg Patriot) | Hidalgo | 1 | 387K | 23M | by Jan 1993 – Jan 2002 |
| Dixie Mortgage-Hopkins Gas Unit G-4-160397 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 376K | 13.1M | Aug 1996 – Aug 2026 |
| Davis, W. J. "A" G-4-177061 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 368K | 26.2M | Mar 2000 – Oct 2023 |
| McAllen, A. A. G-4-149439 | Shell Western E&P only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 350K | 12.6M | Apr 1994 – Jan 2001 |
| McAllen, A. A. "B" G-4-182723 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 303K | 6.45M | Apr 2001 – Aug 2026 |
| Boston Texas Land & Trust G-4-189963 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 303K | 9.05M | Jun 2002 – Nov 2015 |
| McAllen, A. A. G-4-161036 | Shell Western E&P only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 301K | 10.9M | Jul 1996 – Oct 2004 |
| Salinas, M. G-4-151400 | Merit Energy Company only | Jeffress, S.E. (Vicksburg T) | Hidalgo | 1 | 299K | 11.8M | Sep 1994 – Oct 2018 |
| Guerra, E.E. "A" G-4-121568 | Dewbre Petroleum Corporation only | McAllen Ranch (Guerra) | Hidalgo | 1 | 295K | 18.6M | by Jan 1993 – Aug 2026 |
| McAllen, A. A. 'B' G-4-137216 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 294K | 9.01M | by Jan 1993 – Aug 2026 |
| McAllen, A. A. G-4-139496 | Hilcorp Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 267K | 3M | by Jan 1993 – Aug 2002 |
| Beaurline, A. W. G-4-164781 | Merit Energy Company only | McAllen Ranch (Vicksburg y, E.) | Hidalgo | 1 | 263K | 9.96M | Jul 1997 – May 2017 |
| McAllen, A. A. G-4-181160 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 260K | 8.25M | Dec 2000 – Aug 2026 |
| Edinburg Unit G-4-153314 | Royal Production Company, Inc. only | Edinburg (Lower Marks A) | Hidalgo | 1 | 259K | 6.63M | Nov 1994 – Sep 1999 |
| Boston Texas Land & Trust G-4-193892 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 258K | 7.97M | Mar 2003 – Aug 2026 |
| McAllen, A. A. "B" G-4-231958 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 253K | 5.52M | Sep 2007 – Aug 2026 |
| Guerra, A. E. G-4-145946 | Texaco E & P Inc. only | McAllen Ranch (Guerra) | Hidalgo | 1 | 248K | 21.8M | Mar 1993 – Oct 1999 |
| McAllen, A. A. "B" G-4-185731 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 247K | 4.27M | Oct 2001 – Aug 2026 |
| Yturria, H. L & CC G-4-182791 | Merit Energy Company only | Jeffress, W. (Vicksburg V) | Hidalgo | 1 | 245K | 10.3M | Mar 2001 – Aug 2026 |
| Guerra, A. E. G-4-223211 | Hilcorp Energy Company only | McAllen Ranch (Guerra) | Hidalgo | 1 | 242K | 22.5M | Sep 2006 – Jun 2016 |
| Boston Texas Land & Trust G-4-192177 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 241K | 5.91M | Dec 2002 – Aug 2012 |
| Flores, R. G-4-168288 | Merit Energy Company only | Texan Gardens, N. (VKS-S1) | Hidalgo | 1 | 241K | 11.1M | Mar 1998 – Aug 2026 |
| Btlt B G-4-225328 | Merit Energy Company only | Jeffress, N (Vksbg, LO) | Hidalgo | 1 | 241K | 10.2M | Jan 2007 – Aug 2019 |
| McAllen, A. A. 'B' G-4-138997 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 235K | 4.81M | by Jan 1993 – Aug 2026 |
| Beaurline, A. W. G-4-163926 | Merit Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 233K | 10.1M | Apr 1997 – Sep 2001 |
| Btlt B G-4-226133 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 232K | 8.08M | Apr 2007 – Aug 2026 |
| McAllen, A. A. "B" G-4-186875 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 229K | 4.38M | Dec 2001 – Aug 2026 |
| McAllen, A.A. "B" G-4-133221 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 226K | 9.98M | by Jan 1993 – Aug 2026 |
| McAllen Fieldwide Unit G-4-172983 | Shell Western E&P only | McAllen (Consolidated FB-B) | Hidalgo | 1 | 225K | 19.6M | Sep 1998 – Jan 2006 |
| Beaurline, A. W. G-4-165269 | Merit Energy Company only | McAllen Ranch (Vicksburg S, E.) | Hidalgo | 1 | 222K | 2.74M | Aug 1997 – Aug 2026 |
| Guerra, A. E. G-4-227039 | Hilcorp Energy Company only | McAllen Ranch (Guerra) | Hidalgo | 1 | 220K | 23M | Mar 2007 – Mar 2016 |
| Rawhide G-4-268804 | Kebo Oil & Gas, Inc. only | Los Torritos, N. (Frio N) | Hidalgo | 1 | 218K | 2.53M | Feb 2013 – Aug 2026 |
| Coates "A" G-4-88450 | Merit Energy Company only | Jeffress, E. (Vicksburg T) | Hidalgo | 1 | 216K | 8.04M | by Jan 1993 – Jul 2012 |
| Guerra, A. E. G-4-137492 | Chevron U. S. A. Inc. only | McAllen Ranch (Guerra) | Hidalgo | 1 | 216K | 21.5M | by Jan 1993 – Apr 2002 |
| McAllen, A.A. "B" G-4-145438 | Merit Energy Company only | McAllen Ranch (Vksbg L-V, N Cons | Hidalgo | 1 | 214K | 4.37M | May 1993 – Aug 2026 |
| Boston Texas Land & Trust G-4-191126 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 212K | 7.91M | Sep 2002 – Aug 2026 |
| Woods Christian G-4-143961 | Merit Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 212K | 8.26M | by Jan 1993 – Aug 2026 |
| McAllen, A.A. G-4-148852 | Merit Energy Company only | McAllen Ranch (Vksbg P-V,s Cons) | Hidalgo | 1 | 205K | 8.73M | Mar 1994 – Jan 2022 |
| Coastal-Fee G-4-162138 | Merit Energy Company only | Jeffress, S.E. (Vicksburg T) | Hidalgo | 1 | 195K | 5.32M | Nov 1996 – Aug 2026 |
| Edinburg Unit G-4-168718 | Royal Production Company, Inc. only | Edinburg, S. (Marks 11030) | Hidalgo | 1 | 194K | 7.22M | Jan 1998 – Mar 2011 |
| Black Stone G-4-204539 | Magnum Producing, LP only | Los Torritos, N. | Hidalgo | 1 | 192K | 4.93M | Oct 2004 – Oct 2009 |
| Boston Texas Land & Trust G-4-202736 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 190K | 6.31M | Jun 2004 – Aug 2026 |
| Jamieson, Darwina G-4-192410 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 190K | 9.01M | Sep 2002 – Aug 2026 |
| Boston Texas Land & Trust G-4-176539 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 190K | 5.09M | Jan 2000 – Aug 2026 |
| Coates "B" G-4-161782 | Merit Energy Company only | Jeffress, NE. (Vicksburg, Lo.) | Hidalgo | 1 | 182K | 31.2M | Sep 1996 – Feb 2022 |
| McAllen, A. A. "Slot" G-4-167307 | Merit Energy Company only | McAllen Ranch (Vicksburg S, E.) | Hidalgo | 1 | 182K | 2.69M | Dec 1997 – Jan 2004 |
| Dixie Mortgage Hopkins G.U. G-4-181150 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 182K | 5.95M | Dec 2000 – Aug 2026 |