| Conroe Field Unit O-3-11659 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 664 | 26.7M | 61.4M | Jan 1993 – Apr 2026 |
| Hooper, Fannie -A- O-3-979 | Wheeler Operating Corporation only | Conroe | Montgomery | 11 | 443K | 504K | Jan 1993 – Jun 2025 |
| Hooper, Fannie -A- O-3-820 | Wheeler Operating Corporation only | Conroe | Montgomery | 3 | 154K | 195K | Jan 1993 – Apr 2026 |
| Conroe Field Unit G-3-159118 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 14K | 4.61M | May 1996 – Jun 2000 |
| Conroe Field Unit G-3-164637 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 12.2K | 4.08M | Aug 1997 – May 2001 |
| Conroe Field Unit G-3-165789 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 12.1K | 3.09M | Sep 1997 – Oct 2013 |
| Conroe Field Unit G-3-279509 | Denbury Onshore, LLC only | Conroe | Montgomery | 1 | 9.77K | 219K | Apr 2015 – Jul 2019 |
| Conroe Field Unit G-3-172148 | Denbury Onshore, LLC only | Conroe | Montgomery | 1 | 9.66K | 987K | Feb 1999 – Aug 2011 |
| Conroe Field Unit G-3-167998 | Denbury Onshore, LLC only | Conroe | Montgomery | 1 | 9.38K | 81K | Apr 1998 – Jul 2019 |
| Perry Heirs G-3-164655 | Wapiti Operating, LLC only | Conroe | Montgomery | 1 | 8.78K | 4.73M | Aug 1997 – Jun 2002 |
| Conroe Field Unit G-3-164636 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 7.9K | 2.5M | Aug 1997 – Dec 2009 |
| Conroe Field Unit G-3-165755 | Denbury Onshore, LLC only | Conroe | Montgomery | 1 | 7.37K | 2.31M | Sep 1997 – Jun 1999 |
| Keystone Mills G-3-167122 | Diasu Oil & Gas Co., Inc. only | Conroe | Montgomery | 1 | 6.68K | 1.13M | Nov 1997 – Aug 2005 |
| Conroe Field Unit G-3-165436 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 6.41K | 545K | Oct 1997 – Apr 2000 |
| Conroe Field Unit G-3-165356 | Denbury Onshore, LLC only | Conroe | Montgomery | 1 | 5.39K | 1.17M | Sep 1997 – Apr 2010 |
| Conroe Field Unit G-3-165785 | Denbury Onshore, LLC only | Conroe | Montgomery | 1 | 5.28K | 653K | Nov 1997 – May 2010 |
| McComb, W. P. Etal O-3-822 | Diasu Oil & Gas Co., Inc. only | Conroe | Montgomery | 1 | 4.88K | 18 | Jan 1993 – Jul 1994 |
| Conroe Field Unit G-3-170786 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 4.62K | 2.02M | Oct 1998 – Apr 2026 |
| Conroe Field Unit G-3-159115 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 4.44K | 4.6M | May 1996 – Jul 2007 |
| Conroe Field Unit G-3-166390 | Denbury Onshore, LLC only | Conroe | Montgomery | 1 | 4.41K | 1.35M | Jan 1998 – Mar 2010 |
| Conroe Field Unit G-3-167671 | Denbury Onshore, LLC only | Conroe | Montgomery | 1 | 4.32K | 104K | Apr 1998 – Feb 2010 |
| Conroe Field Unit G-3-159758 | Wapiti Operating, LLC only | Conroe | Montgomery | 1 | 4.03K | 1.37M | Jun 1996 – Apr 2008 |
| Conroe Field Unit G-3-164259 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 3.77K | 2.37M | Aug 1997 – Apr 2026 |
| Conroe Field Unit G-3-167444 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 3.71K | 1.03M | Sep 1997 – Apr 2026 |
| Conroe Field Unit G-3-164262 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 3.58K | 1.73M | Aug 1997 – Dec 2014 |
| Conroe Field Unit G-3-165935 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 3.41K | 1.97M | Dec 1997 – Sep 2001 |
| Conroe Field Unit G-3-167854 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 3.36K | 1.8M | Jan 1998 – Apr 2012 |
| Conroe Field Unit G-3-166840 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 3.34K | 1.33M | Jan 1998 – Apr 2026 |
| Conroe Field Unit G-3-169520 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 3.22K | 112K | Jul 1998 – Sep 1999 |
| Conroe Field Unit G-3-165114 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 3.05K | 1.5M | Aug 1997 – Apr 2026 |
| Conroe Field Unit G-3-169204 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 2.97K | 1.21M | Jul 1998 – Sep 2013 |
| Conroe Field Unit G-3-164638 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 2.86K | 2.14M | Aug 1997 – Sep 2007 |
| Conroe Field Unit G-3-165438 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 2.85K | 1.2M | Oct 1997 – Aug 2008 |
| Conroe Field Unit G-3-165784 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 2.82K | 809K | Oct 1997 – Aug 2008 |
| Conroe Field Unit G-3-164675 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 2.77K | 2.74M | Aug 1997 – Aug 2025 |
| Conroe Field Unit G-3-165354 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 2.74K | 992K | Sep 1997 – Jun 2003 |
| Conroe Field Unit G-3-165783 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 2.63K | 891K | Nov 1997 – Jun 2013 |
| Conroe Field Unit G-3-158064 | Denbury Onshore, LLC only | Conroe | Montgomery | 1 | 2.61K | 1.88M | Mar 1996 – Dec 2009 |
| Conroe Field Unit G-3-169152 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 2.59K | 1.03M | Jul 1998 – Jul 1999 |
| Conroe Field Unit G-3-168784 | Wapiti Operating, LLC only | Conroe | Montgomery | 1 | 2.49K | 741K | May 1998 – Sep 2007 |
| Moody, E. G-3-165116 | Wapiti Energy, LLC only | Conroe | Montgomery | 1 | 2.44K | 4.92M | Aug 1997 – Jul 2000 |
| Conroe Field Unit G-3-170785 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 2.32K | 779K | Oct 1998 – Sep 2008 |
| Conroe Field Unig G-3-167258 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 2.18K | 605K | Mar 1998 – Mar 2010 |
| Conroe Field Unit G-3-166286 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 2.14K | 1.58M | Sep 1997 – Sep 2003 |
| Conroe Field Unit G-3-165933 | Exxon Mobil Corporation only | Conroe | Montgomery | 1 | 2.13K | 2.37M | Nov 1997 – Sep 2001 |
| Conroe Field Unit G-3-172520 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 2.09K | 737K | Dec 1998 – May 2009 |
| Conroe Field Unit G-3-168337 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 2.09K | 1.48M | May 1998 – Apr 2026 |
| Conroe Field Unit G-3-159511 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 2.05K | 1.6M | Jun 1996 – Sep 2013 |
| Conroe Field Unit G-3-165780 | Highmark Energy Operating, LLC only | Conroe | Montgomery | 1 | 2.04K | 555K | Nov 1997 – Jan 2007 |
| Conroe Field Unit G-3-167666 | Exxon Corp. only | Conroe | Montgomery | 1 | 1.93K | 154K | Mar 1998 – Nov 1998 |