| McAllen Fieldwide Unit G-4-11933 | OXY USA Inc. only | McAllen-Pharr (Consolidated) | — | 1 | 0 | 2.18M | Jan 1993 – Aug 2015 |
| McAllen Fieldwide Unit G-4-11936 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 0 | Jan 1993 – Jul 2026 |
| McAllen Fieldwide Unit G-4-11944 | Merit Energy Company only | McAllen-Pharr (Consolidated) | — | 1 | 0 | 169K | Jan 1993 – Jul 2026 |
| McAllen Fieldwide Unit G-4-11950 | Merit Energy Company only | McAllen-Pharr (Consolidated) | — | 1 | 0 | 1.95M | Jan 1993 – Jul 2026 |
| Shoemake, E. C., et Al G-4-11962 | Whitesands Operating, L.L.C. only | McAllen-Pharr (Consolidated) | — | 1 | 0 | 295K | Jan 1993 – Mar 2025 |
| McAllen Fieldwide Unit G-4-37978 | Merit Energy Company only | McAllen-Pharr (Consolidated) | — | 1 | 0 | 3.16M | Jan 1993 – Jul 2026 |
| McAllen Fieldwide Unit G-4-39167 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 1.59M | Jan 1993 – Jul 2026 |
| Russell-Beamsley G-4-45714 | Cowrie Energy LLC only | McAllen-Pharr (Consolidated) | — | 1 | 0 | 639K | Jan 1993 – Aug 2022 |
| McAllen Fieldwide Unit G-4-104285 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 4.57M | Jan 1993 – Jul 2026 |
| McAllen Fieldwide Unit G-4-137137 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 1.28M | Jan 1993 – Jul 2026 |
| Bales Gas Unit G-4-140072 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 5.08M | Jan 1993 – Jul 2026 |
| McAllen Fieldwide Unit G-4-140976 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 3.94M | Jan 1993 – Jul 2026 |
| McAllen Fieldwide Unit G-4-142899 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 3.3M | Jan 1993 – Sep 2024 |
| McAllen Fieldwide Unit G-4-144743 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 707 | Jan 1993 – Jul 2026 |
| McAllen Fieldwide Unit G-4-147682 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 1.02M | Nov 1993 – Jul 2026 |
| McAllen Fieldwide Unit G-4-152262 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 6.92M | Oct 1994 – Jul 2026 |
| McAllen Fieldwide Unit G-4-163701 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 2.43M | Sep 1996 – Jul 2026 |
| McAllen Fieldwide Unit G-4-163912 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 9.5M | Nov 1996 – Jul 2026 |
| McAllen Fieldwide Unit G-4-166058 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 2.85M | Feb 1997 – Jul 2026 |
| McAllen Fieldwide Unit G-4-170019 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 794K | Jan 1998 – Jul 2026 |
| McAllen Fieldwide Unit G-4-170949 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 3.27M | May 1998 – Jul 2026 |
| McAllen Fieldwide Unit G-4-171841 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 2.44M | Aug 1998 – Jul 2026 |
| McAllen Fieldwide Unit G-4-173400 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 539K | Dec 1998 – Jul 2026 |
| McAllen Fieldwide Unit G-4-173861 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 156K | Oct 1998 – Jul 2026 |
| McAllen Fieldwide Unit G-4-174117 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 4.5M | Aug 1998 – Jul 2026 |
| Bales Gas Unit G-4-176243 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 366K | Jan 2000 – Jul 2026 |
| Pharr Fieldwide Unit G-4-177729 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 2.29M | Mar 2000 – Jul 2026 |
| McAllen Fieldwide Unit G-4-178287 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 8.43M | Jul 2000 – Jul 2026 |
| Pharr Fieldwide Unit G-4-179712 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 2.14M | May 2000 – Jul 2026 |
| McAllen Fieldwide Unit G-4-185697 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 3.28M | Sep 2001 – Jul 2026 |
| McAllen Fieldwide Unit G-4-185698 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 7.66M | Jul 2001 – Jul 2026 |
| McAllen Fieldwide Unit G-4-189379 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 342K | Jan 2002 – Oct 2025 |
| McAllen Fieldwide Unit G-4-189683 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 187K | Nov 2001 – Jul 2026 |
| McAllen Fieldwide Unit G-4-190613 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 4.34M | May 2002 – Jul 2026 |
| McAllen Fieldwide Unit G-4-190872 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 2.49M | Jul 2001 – Jul 2026 |
| McAllen Fieldwide Unit G-4-195069 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 93.8K | Oct 2002 – Jul 2026 |
| McAllen Fieldwide Unit G-4-195267 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 3.49M | Aug 2002 – Jul 2026 |
| McAllen Fieldwide Unit G-4-196249 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 25.9M | Apr 2003 – Jul 2026 |
| McAllen Fieldwide Unit G-4-197323 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 3.3M | May 2003 – Jul 2026 |
| Pharr Fieldwide Unit G-4-199682 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 819K | Aug 2003 – Jul 2026 |
| McAllen Fieldwide Unit G-4-200117 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 1.18M | Nov 2003 – Jul 2026 |
| McAllen Fieldwide Unit G-4-202132 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 25.9K | Jul 2003 – Jul 2026 |
| McAllen Fieldwide Unit G-4-202258 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 1.49M | Apr 2001 – Jul 2026 |
| Pharr Fieldwide Unit G-4-204247 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 9.8M | Apr 2004 – Jul 2026 |
| McAllen Fieldwide Unit G-4-206801 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 0 | May 2004 – Jul 2026 |
| McAllen Fieldwide Unit G-4-207569 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 0 | Jul 2004 – Jul 2026 |
| McAllen Fieldwide Unit G-4-212984 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 1.15M | Apr 2005 – Jul 2026 |
| McAllen Fieldwide Unit G-4-213490 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 0 | May 2005 – Jul 2026 |
| Bales 9400' Sand Unit G-4-214171 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 182K | Aug 2005 – Jul 2026 |
| McAllen Fieldwide Unit G-4-221845 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 0 | 26.5K | Aug 2006 – Jul 2026 |