| Cook G-4-115440 | Shell Western E&P only | McAllen (Elkins 6300) | Hidalgo | 1 | 4.29K | 1.37M | by Jan 1993 – Nov 2006 |
| McAllen Fieldwide Unit G-4-38187 | Merit Energy Company only | McAllen (Elkins 6300, North) | Hidalgo | 1 | 1.09K | 149K | Jan 1994 – Dec 2001 |
| Elkins, Mollie G-13-254571 | G. A. Hawkins Operating, LLC only | Bingo (Caddo Congl.) | Young | 1 | 308 | 107K | Apr 2010 – Oct 2020 |
| Anna Mae Unit G-4-148346 | Dewbre Petroleum Corporation only | Shepherd (Elkins) | Hidalgo | 1 | 180 | 11.7K | Mar 1994 – Jun 1995 |
| Fee G-4-163827 | XTO Energy Inc. only | McAllen, West (Elkins 6300) | Hidalgo | 1 | 165 | 22.1K | Jun 1997 – Nov 1999 |
| Kawahata GU G-4-10839 | Dewbre Petroleum Corporation only | Hidalgo (Elkins) | Hidalgo | 1 | 159 | 223K | by Jan 1993 – Nov 2001 |
| Elkins 'B' G-9-203578 | 3-D Oil & Gas only | Beddo | Runnels | 1 | 135 | 42.4K | Mar 2004 – Jul 2018 |
| McAllen Fieldwide Unit G-4-190612 | Shell Western E&P only | McAllen (Elkins 6300, North) | Hidalgo | 1 | 80 | 73K | Oct 2000 – Jun 2008 |
| Elkins, Daniel G-3-145432 | Stanton Mineral Development Inc only | Serbin (Taylor Sand) | Bastrop | 1 | 50 | 7.2K | Apr 1993 – Jan 1998 |
| Vess, E. L. G-4-10831 | Faulconer, Vernon E., Inc. only | Hidalgo (Elkins) | Hidalgo | 1 | 31 | 19.6K | by Jan 1993 – Jul 1993 |
| Elkins, W. E. G-9-174595 | Deltex Minerals Inc. only | Beddo | Runnels | 1 | 23 | 14.4K | Oct 1999 – Aug 2005 |
| Elkins Unit G-13-187368 | Devon Energy Production Co, L.P. only | Newark, East (Barnett Shale) | Tarrant | 1 | 17 | 421K | Apr 2002 – Jan 2018 |
| Elkins, W. E. G-9-246923 | Deltex Minerals Inc. only | Beddo | Runnels | 1 | 16 | 18 | Mar 2009 – May 2009 |
| Elkins Unit G-13-180589 | Riverbirch Resources, LLC only | Newark, East (Barnett Shale) | Tarrant | 1 | 12 | 2.13M | Sep 2000 – Aug 2026 |
| Elkins Unit G-13-184574 | Riverbirch Resources, LLC only | Newark, East (Barnett Shale) | Tarrant | 1 | 9 | 1.31M | Jan 2002 – Aug 2026 |
| Elkins Unit G-13-188297 | Riverbirch Resources, LLC only | Newark, East (Barnett Shale) | Tarrant | 1 | 6 | 1.3M | Mar 2002 – Aug 2026 |
| Elkins Unit G-13-190089 | Riverbirch Resources, LLC only | Newark, East (Barnett Shale) | Tarrant | 1 | 3 | 1.7M | Jul 2002 – Aug 2026 |
| Elkins Unit G-13-180912 | Riverbirch Resources, LLC only | Newark, East (Barnett Shale) | Tarrant | 1 | 2 | 1.89M | Nov 2001 – Aug 2026 |
| Theser Bros. G-4-10841 | Dewbre Petroleum Corporation only | Hidalgo (Elkins) | Hidalgo | 1 | 0 | 0 | — |
| Elkins Unit G-13-273625 | BKV North Texas, LLC only | Newark, East (Barnett Shale) | Tarrant | 1 | 0 | 2.43M | Oct 2014 – Aug 2026 |
| Elkins Unit G-13-272188 | BKV North Texas, LLC only | Newark, East (Barnett Shale) | Tarrant | 1 | 0 | 2.25M | Oct 2014 – Aug 2026 |
| Elkins Unit G-13-255286 | BKV North Texas, LLC only | Newark, East (Barnett Shale) | Tarrant | 1 | 0 | 4.51M | Jun 2010 – Aug 2026 |
| Elkins G-13-247348 | Riverbirch Resources, LLC only | Newark, East (Barnett Shale) | Tarrant | 1 | 0 | 1.95M | Oct 2007 – Aug 2026 |
| McAllen Fieldwide Unit G-4-33644 | Total E&P USA, Inc. only | McAllen (Elkins 6300, North) | Hidalgo | 1 | 0 | 0 | — |
| Elkins Unit G-13-196326 | Riverbirch Resources, LLC only | Newark, East (Barnett Shale) | Tarrant | 1 | 0 | 1.39M | Jun 2003 – Aug 2026 |
| Elkins Unit G-13-237801 | Riverbirch Resources, LLC only | Newark, East (Barnett Shale) | Tarrant | 1 | 0 | 594K | Jan 2008 – Dec 2025 |
| Elkins Unit G-13-239223 | Riverbirch Resources, LLC only | Newark, East (Barnett Shale) | Tarrant | 1 | 0 | 2.06M | Apr 2008 – Jul 2026 |
| Elkins G-13-246898 | Riverbirch Resources, LLC only | Newark, East (Barnett Shale) | Tarrant | 1 | 0 | 2.1M | Jun 2008 – Aug 2026 |
| Elkins Unit G-13-247011 | Riverbirch Resources, LLC only | Newark, East (Barnett Shale) | Tarrant | 1 | 0 | 1.89M | Dec 2007 – Mar 2026 |
| Elkins Unit G-13-260063 | BKV North Texas, LLC only | Newark, East (Barnett Shale) | Tarrant | 1 | 0 | 4.7M | Feb 2011 – Aug 2026 |
| Engelking Unit G-2-125807 | Britanco, L.L.C. only | Tuleta, West (9570) | Bee | 1 | 0 | 256K | by Jan 1993 – Aug 2026 |
| Elkins, Daniel G-3-297432 | Trivista Operating LLC only | Serbin (Taylor Sand) | Bastrop | 1 | 0 | 204 | Nov 2023 – Jul 2024 |
| Elkins Unit G-5-207235 | Riverbirch Resources, LLC only | Newark, East (Caddo Lime) | Tarrant | 1 | 0 | 715K | Feb 2005 – Aug 2026 |
| Elkins Gas Unit G-4-10833 | Gulf Exploration Corporation only | Hidalgo (Elkins) | Hidalgo | 1 | 0 | 0 | — |
| Elkins Unit G-13-237693 | Riverbirch Resources, LLC only | Newark, East (Barnett Shale) | Tarrant | 1 | 0 | 4.52M | Dec 2007 – Aug 2026 |
| Elkins Unit G-13-272189 | BKV North Texas, LLC only | Newark, East (Barnett Shale) | Tarrant | 1 | 0 | 2.08M | Oct 2014 – Aug 2026 |
| Samano G-4-10832 | BZG E&P LLC only | Hidalgo (Elkins) | Hidalgo | 1 | 0 | 0 | — |
| Elkins Unit G-13-237414 | Riverbirch Resources, LLC only | Newark, East (Barnett Shale) | Tarrant | 1 | 0 | 2.83M | Dec 2007 – Jun 2026 |
| Elkins Gas Unit G-4-10854 | Gulf Exploration Corporation only | Hidalgo (el Texano, Upper) | Hidalgo | 1 | 0 | 0 | — |
| Elkins 'A' G-9-203579 | CDC Services Inc. only | Beddo | Runnels | 1 | 0 | 6.6K | Mar 2004 – Aug 2005 |
| Elkins "B" G-13-191896 | Bedrock Production, LLC only | Newark, East (Barnett Shale) | Tarrant | 1 | 0 | 107K | Nov 2002 – Aug 2004 |
| Elkins "B" G-13-194667 | Bedrock Production, LLC only | Newark, East (Barnett Shale) | Tarrant | 1 | 0 | 190K | Jun 2003 – Mar 2021 |
| Elkins 'A' G-13-192609 | BKV Barnett II, LLC only | Newark, East (Barnett Shale) | Tarrant | 1 | 0 | 918K | Oct 2002 – Apr 2020 |
| Elkins Unit G-13-194270 | Riverbirch Resources, LLC only | Newark, East (Barnett Shale) | Tarrant | 1 | 0 | 1.64M | Mar 2003 – Aug 2026 |
| Elkins Unit G-13-233884 | Riverbirch Resources, LLC only | Newark, East (Barnett Shale) | Tarrant | 1 | 0 | 2.88M | Sep 2007 – Aug 2026 |
| Elkins G-13-241117 | Riverbirch Resources, LLC only | Newark, East (Barnett Shale) | Tarrant | 1 | 0 | 1.73M | Jun 2008 – Aug 2026 |