| McAllen Fieldwide Unit G-4-172983 | Shell Western E&P only | McAllen (Consolidated FB-B) | Hidalgo | 1 | 225K | 19.6M | Sep 1998 – Jan 2006 |
| McAllen Fieldwide Unit G-4-185698 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 90.4K | 7.66M | Jul 2001 – Apr 2026 |
| McAllen Fieldwide Unit G-4-178287 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 73.9K | 8.43M | Jul 2000 – Apr 2026 |
| McAllen Fieldwide Unit G-4-162849 | Totalfinaelf E&P USA Inc only | Belle Ferguson (Lo. Frio Cons.) | Hidalgo | 1 | 58.4K | 3.93M | Apr 1997 – Dec 2002 |
| McAllen Fieldwide Unit G-4-185710 | Shell Western E&P only | McAllen (Hansen) | Hidalgo | 1 | 52K | 2.3M | Nov 2000 – Sep 2006 |
| McAllen Fieldwide Unit O-4-11916 | Merit Energy Company only | McAllen (Biedenharn, Upper) | Hidalgo | 4 | 51.3K | 316K | Jan 1993 – Dec 2000 |
| McAllen Fieldwide Unit G-4-163912 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 47.1K | 9.5M | Nov 1996 – Apr 2026 |
| McAllen Fieldwide Unit G-4-195267 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 44K | 3.49M | Aug 2002 – Aug 2005 |
| McAllen Fieldwide Unit G-4-244843 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 43.6K | 6.11M | Nov 2008 – Apr 2026 |
| McAllen Fieldwide Unit G-4-202258 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 40.6K | 1.49M | Apr 2001 – Sep 2005 |
| McAllen Fieldwide Unit G-4-166058 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 38.3K | 2.85M | Mar 1997 – Oct 1999 |
| McAllen Fieldwide Unit G-4-147682 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 32.7K | 1.02M | Nov 1993 – Apr 2026 |
| McAllen Fieldwide Unit G-4-152262 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 30.8K | 6.92M | Oct 1994 – Apr 2026 |
| McAllen Fieldwide Unit G-4-170949 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 28.8K | 3.27M | May 1998 – Apr 2009 |
| McAllen Fieldwide Unit G-4-173095 | Total E&P USA, Inc. only | Belle Ferguson (Lo. Frio Cons.) | Hidalgo | 1 | 27.9K | 2.76M | Nov 1998 – Feb 2005 |
| McAllen Fieldwide Unit G-4-259318 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 27.6K | 2.86M | Oct 2010 – Apr 2026 |
| McAllen Fieldwide Unit G-4-170019 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 26.7K | 794K | Jan 1998 – Dec 2007 |
| McAllen Fieldwide Unit G-4-171841 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 26K | 2.44M | Aug 1998 – Apr 2026 |
| McAllen Fieldwide Unit G-4-173960 | Totalfinaelf E&P USA Inc only | McAllen (Bond C) | Hidalgo | 1 | 25.8K | 1.8M | Aug 1997 – Dec 2001 |
| McAllen Fieldwide Unit G-4-148678 | Shell Western E&P only | McAllen (9400) | Hidalgo | 1 | 23.5K | 932K | Nov 1993 – Nov 2009 |
| McAllen Fieldwide Unit G-4-248323 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 22.6K | 2.36M | Dec 2008 – Jul 2025 |
| McAllen Fieldwide Unit G-4-154915 | Fina Oil & Chemical Company only | McAllen (Crutchfield) | Hidalgo | 1 | 21K | 2.02M | Jan 1995 – Oct 1999 |
| McAllen Fieldwide Unit G-4-196249 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 19.6K | 25.9M | Apr 2003 – Apr 2026 |
| McAllen Fieldwide Unit G-4-137137 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 19.1K | 1.28M | Jan 1993 – Nov 1996 |
| McAllen Fieldwide Unit G-4-174117 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 18.8K | 4.5M | Aug 1998 – Apr 2024 |
| McAllen Fieldwide Unit G-4-185697 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 18.7K | 3.28M | Sep 2001 – Apr 2026 |
| McAllen Fieldwide Unit G-4-37978 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 18.6K | 3.16M | Jan 1993 – Apr 2026 |
| McAllen Fieldwide Unit G-4-247958 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 17.3K | 6.83M | Feb 2009 – Apr 2026 |
| McAllen Fieldwide Unit G-4-222894 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 16.5K | 3.27M | Sep 2006 – Apr 2020 |
| McAllen Fieldwide Unit G-4-104285 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 15.8K | 4.57M | Jan 1993 – Apr 2026 |
| McAllen Fieldwide Unit G-4-190613 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 15.7K | 4.34M | May 2002 – Aug 2009 |
| McAllen Fieldwide Unit G-4-208836 | Merit Energy Company only | Belle Ferguson (Bond) | Hidalgo | 1 | 15.7K | 859K | Feb 2005 – Apr 2010 |
| McAllen Fieldwide Unit G-4-11948 | Total E&P USA, Inc. only | McAllen (Hansen) | Hidalgo | 1 | 15.5K | 4.7M | Jan 1994 – Jul 2004 |
| McAllen Fieldwide Unit G-4-140976 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 15.1K | 3.94M | Jan 1993 – May 2006 |
| McAllen Fieldwide Unit G-4-179960 | Totalfinaelf E&P USA Inc only | McAllen (Marks) | Hidalgo | 1 | 14.7K | 3.04M | Sep 2000 – Nov 2002 |
| McAllen Fieldwide Unit G-4-39167 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 14.4K | 1.59M | Jan 1993 – Jan 2023 |
| McAllen Fieldwide Unit G-4-163701 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 14K | 2.43M | Sep 1996 – Apr 2026 |
| McAllen Fieldwide Unit G-4-163493 | Fina Oil & Chemical Company only | McAllen, West (Card) | Hidalgo | 1 | 13.6K | 1.85M | Mar 1996 – Dec 1998 |
| McAllen Fieldwide Unit G-4-142899 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 12.8K | 3.3M | Jan 1993 – Nov 2002 |
| McAllen Fieldwide Unit G-4-197323 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 12.6K | 3.3M | May 2003 – May 2024 |
| McAllen Fieldwide Unit G-4-259321 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 12.2K | 250K | Jun 2010 – Oct 2021 |
| McAllen Fieldwide Unit G-4-150565 | Fina Oil & Chemical Company only | McAllen (9400) | Hidalgo | 1 | 12.2K | 345K | Feb 1994 – Apr 1998 |
| McAllen Fieldwide Unit G-4-11950 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 11.5K | 1.95M | Jan 1993 – Dec 2006 |
| McAllen Fieldwide Unit G-4-200117 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 11.1K | 1.18M | Nov 2003 – Apr 2026 |
| McAllen Fieldwide Unit G-4-190872 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 9.93K | 2.49M | Jul 2001 – Aug 2024 |
| McAllen Fieldwide Unit G-4-189681 | Total E&P USA, Inc. only | McAllen (Hansen) | Hidalgo | 1 | 9.12K | 1.03M | Feb 2001 – Apr 2003 |
| McAllen Fieldwide Unit G-4-176575 | Totalfinaelf E&P USA Inc only | McAllen (Bond) | Hidalgo | 1 | 8.03K | 665K | Jun 1999 – Jan 2001 |
| McAllen Fieldwide Unit G-4-11933 | OXY USA Inc. only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 7.99K | 2.18M | Jan 1993 – Jun 2011 |
| McAllen Fieldwide Unit G-4-200680 | Shell Western E&P only | McAllen (Lower Frio) | Hidalgo | 1 | 7.43K | 574K | Sep 2003 – Nov 2008 |
| McAllen Fieldwide Unit G-4-11944 | Merit Energy Company only | McAllen-Pharr (Consolidated) | Hidalgo | 1 | 7.11K | 169K | Jun 1997 – Feb 2002 |