| Dixie Mortgage-Hopkins Gas Unit G-4-158330 | OXY USA Inc. only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 6.44M | Mar 1996 – Nov 2013 |
| Boston Texas Land & Trust G-4-159248 | Shell Western E&P only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 420K | Apr 1996 – May 2009 |
| Boston Texas Land & Trust G-4-159253 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 1.18M | May 1996 – Jul 2026 |
| Hopkins, M. A. Gas Unit G-4-159881 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 8.13M | Jul 1996 – Jul 2026 |
| Dixie Mortgage-Hopkins Gas Unit G-4-160397 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 13.1M | Aug 1996 – Jul 2026 |
| Hopkins, M. A. Gas Unit G-4-165894 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 5.92M | Sep 1997 – Jul 2026 |
| Hopkins, M. A. Gas Unit G-4-166553 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 6.99M | Nov 1997 – Jul 2026 |
| Dixie Mortgage-Hopkins Gas Unit G-4-168417 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 5.46M | Apr 1998 – Jul 2026 |
| Boston Texas Land & Trust G-4-168648 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 3.02M | Mar 1998 – Jul 2026 |
| Theiss et al Gas Unit G-4-169479 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 609K | Jun 1998 – Jul 2026 |
| Dixie Mortgage-Hopkins Gas Unit G-4-169503 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 2.46M | Jul 1998 – Jul 2026 |
| Davis, W. J. "A" G-4-172438 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 11.8M | Nov 1998 – Jul 2026 |
| Wiesehan-Walker Gas Unit G-4-172471 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 1.84M | Dec 1998 – Jul 2026 |
| Kotara-Aldridge et al G U G-4-173434 | Zone Ridge Operating, LLC only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 474K | May 1999 – Jul 2026 |
| Davis, W. J. "A" G-4-174031 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 6.47M | Jun 1999 – Jul 2026 |
| Davis, W. J. "A" G-4-175052 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 7.28M | Sep 1999 – Jul 2026 |
| Johnson-Cypher Gas Unit G-4-175991 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 3.74M | Dec 1999 – Jul 2026 |
| Hopkins, M. A. Gas Unit G-4-176080 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 7.09M | Oct 1999 – Jul 2026 |
| Boston Texas Land & Trust G-4-176539 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 5.06M | Jan 2000 – Jul 2026 |
| Davis, W. J. "A" G-4-177061 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 26.2M | Mar 2000 – Jul 2026 |
| Btlt B G-4-177383 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 1.23M | Apr 2000 – Jul 2026 |
| Btlt A G-4-177681 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Starr | 1 | 0 | 1.62M | May 2000 – Jul 2026 |
| Theiss et al Gas Unit G-4-178201 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 4.05M | Jun 2000 – Jul 2026 |
| Btlt A G-4-178872 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 503K | Jun 2000 – Jul 2026 |
| Davis, W. J. "A" G-4-179431 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 2.09M | Aug 2000 – Jul 2026 |
| Boston Texas Land & Trust G-4-180173 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 3.35M | Nov 2000 – Jul 2026 |
| Darwina D. Jamieson G-4-180748 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 865K | Jan 2001 – Jul 2026 |
| Dixie Mortgage Hopkins G.U. G-4-181150 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 5.94M | Dec 2000 – Jul 2026 |
| Bell G-4-181505 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 994K | Sep 2000 – Jul 2026 |
| Jamieson, Darwina G-4-182484 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 5.23M | Mar 2001 – Jul 2026 |
| Hopkins, M. A. Gas Unit G-4-183045 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 603K | May 2001 – Jul 2026 |
| Dixie Mortgage-Hopkins Gas Unit G-4-183285 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 2.11M | Jun 2001 – Jul 2026 |
| Davis, W. J. "A" G-4-183393 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 9.33M | May 2001 – Jul 2026 |
| Wiesehan-Walker Gas Unit G-4-183778 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 4.02M | Jun 2001 – Jul 2026 |
| Hopkins, M. A. Gas Unit G-4-185377 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 3.53M | Sep 2001 – Jul 2026 |
| Davis, M. A. G-4-186041 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 661K | Apr 2001 – Jul 2026 |
| Dixie Mortgage-Hopkins Gas Unit G-4-186042 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 4.76M | Nov 2001 – Jul 2026 |
| Davis, W. J. "A" G-4-186314 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 1.23M | Nov 2001 – Jul 2026 |
| Davis, W.J. G-4-186797 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 4.66M | Dec 2001 – Jul 2026 |
| Jamieson, Darwina G-4-187242 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 6.17M | Jul 2001 – Jul 2026 |
| Hopkins, M. A. Gas Unit G-4-187244 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 7.63M | Jan 2002 – Jul 2026 |
| Wiesehan-Walker Gas Unit G-4-187343 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 4.71M | Feb 2002 – Jul 2026 |
| Dixie Mortgage-Hopkins Gas Unit G-4-188022 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 1.45M | Apr 2002 – Jul 2026 |
| Davis, W. J. "A" G-4-188205 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 12.2M | Feb 2002 – Jul 2026 |
| Boston Texas Land & Trust G-4-189963 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 9.05M | Jun 2002 – Jul 2026 |
| Hopkins, M. A. Gas Unit G-4-190227 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 9.25M | Jun 2002 – Jul 2026 |
| Boston Texas Land & Trust G-4-190253 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 4.05M | Aug 2002 – Jul 2026 |
| Theiss et al Gas Unit G-4-190363 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 2.21M | Jul 2002 – Jul 2026 |
| Boston Texas Land & Trust G-4-191126 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 7.89M | Sep 2002 – Jul 2026 |
| Wiesehan-Walker Gas Unit G-4-157727 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 0 | 8.55M | Jan 1996 – Jul 2026 |