| Conroe Field Unit O-3-11659 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 664 | 26.7M | 61.4M | Jan 1993 – Jul 2026 |
| Conroe Field Unit O-3-11664 | Exxon Corp. only | Conroe ( Cockfield Upper) | Montgomery | 28 | 261K | 2.84M | Jan 1993 – Oct 1997 |
| Conroe Field Unit G-3-33379 | Exxon Mobil Corporation only | Conroe ( Cockfield Upper) | — | 1 | 0 | 12.1K | Jan 1993 – May 2000 |
| Conroe Field Unit G-3-38868 | Exxon Corp. only | Conroe ( Cockfield Upper) | — | 1 | 0 | 0 | Jan 1993 – May 1993 |
| Conroe Field Unit G-3-39303 | Exxon Corp. only | Conroe ( Cockfield Upper) | — | 1 | 0 | 0 | Jan 1993 – Jan 1996 |
| Conroe Field Unit G-3-40171 | Highmark Energy Operating, LLC only | Conroe ( Cockfield Upper) | — | 1 | 0 | 0 | Jan 1993 – Jul 2026 |
| Conroe Field Unit G-3-42705 | Exxon Corp. only | Conroe | — | 1 | 0 | 0 | Jan 1993 – Jun 1993 |
| Conroe Field Unit G-3-61090 | Highmark Energy Operating, LLC only | Conroe ( Cockfield Upper) | — | 1 | 0 | 421K | Jan 1993 – Jul 2026 |
| Conroe Field Unit G-3-46992 | Exxon Corp. only | Conroe ( Cockfield Upper) | Montgomery | 1 | 0 | 0 | Jan 1993 – Aug 1996 |
| Conroe Field Unit G-3-49507 | Exxon Corp. only | Conroe ( Cockfield Upper) | Montgomery | 1 | 0 | 0 | Jan 1993 – Oct 1995 |
| Conroe Field Unit G-3-57684 | Exxon Mobil Corporation only | Conroe ( Cockfield Upper) | — | 1 | 0 | 0 | Jan 1993 – Apr 2006 |
| Conroe Field Unit G-3-58628 | Exxon Corp. only | Conroe | — | 1 | 0 | 0 | Jan 1993 – Jul 1995 |
| Conroe Field Unit G-3-58797 | Highmark Energy Operating, LLC only | Conroe | — | 1 | 0 | 381K | Jan 1993 – Jul 2026 |
| Conroe Field Unit G-3-58800 | Exxon Corp. only | Conroe | — | 1 | 0 | 0 | Jan 1993 – Nov 1993 |
| Conroe Field Unit G-3-88984 | Highmark Energy Operating, LLC only | Conroe | — | 1 | 0 | 103K | Jan 1993 – Jul 2026 |
| Conroe Field Unit G-3-79677 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 0 | 213K | Jan 1993 – Jul 2026 |
| Conroe Field Unit G-3-61972 | Exxon Corp. only | Conroe ( Cockfield Upper) | Montgomery | 1 | 0 | 0 | Jan 1993 – Feb 1996 |
| Conroe Field Unit G-3-62122 | Exxon Corp. only | Conroe | — | 1 | 0 | 0 | Jan 1993 – Jul 1995 |
| Conroe Field Unit G-3-62174 | Exxon Mobil Corporation only | Conroe | — | 1 | 0 | 70.1K | Jan 1993 – Feb 2003 |
| Conroe Field Unit G-3-62367 | Exxon Corp. only | Conroe | — | 1 | 0 | 0 | Jan 1993 – Aug 1995 |
| Conroe Field Unit G-3-63049 | Exxon Corp. only | Conroe | — | 1 | 0 | 0 | Jan 1993 – Jan 1995 |
| Conroe Field Unit G-3-63826 | Exxon Corp. only | Conroe ( Cockfield Upper) | — | 1 | 0 | 0 | Jan 1993 – Nov 1993 |
| Conroe Field Unit G-3-64417 | Highmark Energy Operating, LLC only | Conroe | — | 1 | 0 | 0 | Jan 1993 – Jul 2026 |
| Conroe Field Unit G-3-64774 | Exxon Corp. only | Conroe ( Cockfield Upper) | — | 1 | 0 | 0 | Jan 1993 – Jul 1994 |
| Conroe Field Unit G-3-65268 | Highmark Energy Operating, LLC only | Conroe | — | 1 | 0 | 0 | Jan 1993 – Jul 2026 |
| Conroe Field Unit G-3-65605 | Exxon Corp. only | Conroe | — | 1 | 0 | 0 | Jan 1993 – Aug 1993 |
| Conroe Field Unit G-3-65895 | Denbury Onshore, LLC only | Conroe ( Cockfield Upper) | — | 1 | 0 | 0 | Jan 1993 – Jan 2022 |
| Conroe Field Unit G-3-68476 | Highmark Energy Operating, LLC only | Conroe | — | 1 | 0 | 0 | Jan 1993 – Jul 2026 |
| Conroe Field Unit G-3-70465 | Highmark Energy Operating, LLC only | Conroe ( Cockfield Upper) | — | 1 | 0 | 0 | Jan 1993 – Jul 2026 |
| Conroe Field Unit G-3-73566 | Exxon Mobil Corporation only | Conroe ( Cockfield Upper) | Montgomery | 1 | 0 | 0 | Jan 1993 – Apr 2000 |
| Conroe Field Unit G-3-60256 | Exxon Corp. only | Conroe | — | 1 | 0 | 0 | Jan 1993 – Mar 1996 |
| Conroe Field Unit G-3-41292 | Exxon Corp. only | Conroe | — | 1 | 0 | 0 | Jan 1993 – Oct 1997 |
| Conroe Field Unit G-3-140081 | Exxon Corp. only | Conroe | Montgomery | 1 | 0 | 190K | Jan 1993 – Sep 1995 |
| Conroe Field Unit G-3-143082 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 0 | 657K | Jan 1993 – Jul 2026 |
| Conroe Field Unit G-3-158064 | Denbury Onshore, LLC only | Conroe | — | 1 | 0 | 1.88M | Mar 1996 – Jun 2023 |
| Conroe Field Unit G-3-159115 | Highmark Energy Operating, LLC only | Conroe | — | 1 | 0 | 4.6M | May 1996 – Jul 2026 |
| Conroe Field Unit G-3-159118 | Highmark Energy Operating, LLC only | Conroe | — | 1 | 0 | 4.61M | May 1996 – Jul 2026 |
| Conroe Field Unit G-3-159471 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 0 | 4.05M | Jun 1996 – Jul 2026 |
| Conroe Field Unit G-3-159511 | Highmark Energy Operating, LLC only | Conroe | — | 1 | 0 | 1.6M | Jun 1996 – Jul 2026 |
| Conroe Field Unit G-3-159758 | Wapiti Operating, LLC only | Conroe | — | 1 | 0 | 1.37M | Jun 1996 – Jul 2008 |
| Conroe Field Unit G-3-164257 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 0 | 1.92M | Jul 1997 – Jul 2026 |
| Conroe Field Unit G-3-164258 | Exxon Mobil Corporation only | Conroe | Montgomery | 1 | 0 | 67.8K | Jul 1997 – Jan 2001 |
| Conroe Field Unit G-3-164259 | Highmark Energy Operating, LLC only | Conroe | — | 1 | 0 | 2.37M | Jul 1997 – Jul 2026 |
| Conroe Field Unit G-3-164260 | Wapiti Operating, LLC only | Conroe | Montgomery | 1 | 0 | 642K | Jul 1997 – May 2008 |
| Conroe Field Unit G-3-164262 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 0 | 1.73M | Jul 1997 – Jul 2026 |
| Conroe Field Unit G-3-164635 | Highmark Energy Operating, LLC only | Conroe | — | 1 | 0 | 1.84M | Aug 1997 – Jul 2026 |
| Conroe Field Unit G-3-164636 | Highmark Energy Operating, LLC only | Conroe | — | 1 | 0 | 2.5M | Aug 1997 – Jul 2026 |
| Conroe Field Unit G-3-164637 | Highmark Energy Operating, LLC only | Conroe | — | 1 | 0 | 4.08M | Aug 1997 – Jul 2026 |
| Conroe Field Unit G-3-164638 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 0 | 2.14M | Aug 1997 – Jul 2026 |
| Conroe Field Unit G-3-36654 | Exxon Corp. only | Conroe ( Cockfield Upper) | Montgomery | 1 | 0 | 0 | Jan 1993 – Feb 1994 |