| McAllen Fieldwide Unit G-4-185698 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 91.8K | 7.71M | Jul 2001 – Aug 2026 |
| McAllen Fieldwide Unit G-4-178287 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 74K | 8.52M | Jul 2000 – Aug 2026 |
| Pharr Fieldwide Unit G-4-161059 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 67.3K | 10.6M | Jun 1996 – Jan 2002 |
| Pharr Fieldwide Unit G-4-189831 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 62.7K | 11.6M | Apr 2002 – Aug 2026 |
| McAllen Fieldwide Unit O-4-11916 | Merit Energy Company | McAllen (Biedenharn, Upper) | Hidalgo | 4 | 51.3K | 316K | by Jan 1993 – Dec 2000 |
| McAllen Fieldwide Unit G-4-163912 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 47.1K | 9.5M | Nov 1996 – Aug 2026 |
| Pharr Fieldwide Unit G-4-257975 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 45.9K | 4.12M | May 2010 – Aug 2026 |
| McAllen Fieldwide Unit G-4-195267 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 44K | 3.49M | Aug 2002 – Aug 2005 |
| McAllen Fieldwide Unit G-4-244843 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 43.8K | 6.16M | Nov 2008 – Aug 2026 |
| McAllen Fieldwide Unit G-4-202258 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 40.6K | 1.49M | Apr 2001 – Sep 2005 |
| McAllen Fieldwide Unit G-4-166058 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 38.3K | 2.85M | Mar 1997 – Oct 1999 |
| Pharr Fieldwide Unit G-4-248850 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 34.1K | 2.15M | Apr 2009 – Aug 2026 |
| McAllen Fieldwide Unit G-4-147682 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 32.7K | 1.02M | Nov 1993 – Aug 2026 |
| McAllen Fieldwide Unit G-4-152262 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 30.8K | 6.92M | Oct 1994 – Aug 2026 |
| McAllen Fieldwide Unit G-4-170949 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 28.8K | 3.27M | May 1998 – Apr 2009 |
| McAllen Fieldwide Unit G-4-259318 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 27.6K | 2.87M | Oct 2010 – Aug 2026 |
| McAllen Fieldwide Unit G-4-170019 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 26.7K | 794K | Jan 1998 – Dec 2007 |
| McAllen Fieldwide Unit G-4-171841 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 26K | 2.44M | Aug 1998 – Aug 2026 |
| Pharr Fieldwide Unit G-4-210399 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 25.8K | 2.96M | Mar 2005 – Aug 2026 |
| Pharr Fieldwide Unit G-4-235966 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 25.6K | 2.88M | Nov 2007 – Aug 2026 |
| Pharr Fieldwide Unit G-4-179712 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 24.9K | 2.15M | May 2000 – Aug 2026 |
| McAllen Fieldwide Unit G-4-248323 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 22.6K | 2.36M | Dec 2008 – Jul 2025 |
| Pharr Fieldwide Unit G-4-174886 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 20.3K | 1.8M | Jul 1999 – Mar 2022 |
| McAllen Fieldwide Unit G-4-196249 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 19.7K | 25.9M | Apr 2003 – Aug 2026 |
| McAllen Fieldwide Unit G-4-137137 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 19.1K | 1.28M | by Jan 1993 – Nov 1996 |
| McAllen Fieldwide Unit G-4-174117 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 18.8K | 4.5M | Aug 1998 – Apr 2024 |
| McAllen Fieldwide Unit G-4-185697 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 18.7K | 3.28M | Sep 2001 – Aug 2026 |
| McAllen Fieldwide Unit G-4-37978 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 18.6K | 3.16M | by Jan 1993 – Aug 2026 |
| Pharr Fieldwide Unit G-4-191480 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 18.5K | 1.43M | Jul 2002 – Aug 2026 |
| McAllen Fieldwide Unit G-4-247958 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 17.3K | 6.84M | Feb 2009 – Aug 2026 |
| Pharr Fieldwide Unit G-4-150485 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 17.1K | 1.09M | Apr 1994 – Aug 2026 |
| Pharr Fieldwide Unit G-4-204247 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 17K | 9.82M | Apr 2004 – Aug 2026 |
| Pharr Fieldwide Unit G-4-151482 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 16.6K | 2.46M | Jul 1994 – Aug 2026 |
| McAllen Fieldwide Unit G-4-222894 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 16.5K | 3.27M | Sep 2006 – Apr 2020 |
| McAllen Fieldwide Unit G-4-104285 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 15.8K | 4.6M | by Jan 1993 – Aug 2026 |
| McAllen Fieldwide Unit G-4-190613 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 15.7K | 4.34M | May 2002 – Aug 2009 |
| McAllen Fieldwide Unit G-4-208836 | Merit Energy Company | Belle Ferguson (Bond) | Hidalgo | 1 | 15.7K | 859K | Feb 2005 – Apr 2010 |
| McAllen Fieldwide Unit G-4-140976 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 15.1K | 3.94M | by Jan 1993 – May 2006 |
| Pharr Fieldwide Unit G-4-177729 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 15K | 2.3M | Mar 2000 – Aug 2026 |
| McAllen Fieldwide Unit G-4-39167 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 14.4K | 1.59M | by Jan 1993 – Jan 2023 |
| McAllen Fieldwide Unit G-4-163701 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 14K | 2.43M | Sep 1996 – Aug 2026 |
| Pharr Fieldwide Unit G-4-257976 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 13.3K | 1.09M | May 2010 – Aug 2026 |
| Pharr Fieldwide Unit G-4-251757 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 12.9K | 6.11M | Jun 2009 – Aug 2026 |
| McAllen Fieldwide Unit G-4-142899 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 12.8K | 3.3M | by Jan 1993 – Nov 2002 |
| McAllen Fieldwide Unit G-4-197323 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 12.6K | 3.3M | May 2003 – May 2024 |
| McAllen Fieldwide Unit G-4-259321 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 12.2K | 250K | Jun 2010 – Oct 2021 |
| McAllen Fieldwide Unit G-4-11950 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 11.5K | 1.95M | by Jan 1993 – Dec 2006 |
| McAllen Fieldwide Unit G-4-200117 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 11.2K | 1.18M | Nov 2003 – Aug 2026 |
| Pharr Fieldwide Unit G-4-164332 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 10.8K | 1.88M | May 1997 – Oct 2004 |
| Pharr Fieldwide Unit G-4-152465 | Merit Energy Company | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 10.2K | 602K | Oct 1994 – Aug 2026 |