| Moody, E. O-3-24369 | Highmark Energy Operating, LLC only | Conroe (Cons. U) | Montgomery | 2 | 41.8K | 7.22K | Apr 2003 – Apr 2025 |
| Dobbins, C L O-3-24599 | Highmark Energy Operating, LLC only | Conroe (Cons. U) | Montgomery | 2 | 16K | 35.8K | Aug 2004 – Jan 2020 |
| Dunn -B- O-3-24793 | Wheeler Operating Corporation only | Conroe (Cons. U) | Montgomery | 1 | 10.4K | 8 | Dec 2005 – Jul 2020 |
| Madeley, AA & Da O-3-24498 | Denbury Onshore, LLC only | Conroe (Cons. U) | Montgomery | 1 | 7.21K | 3.45K | Jan 2004 – Jan 2007 |
| Dunn "A" G-3-215077 | Wheeler Operating Corporation only | Conroe (Cons. U) | Montgomery | 1 | 892 | 64.2K | Oct 2006 – Apr 2021 |
| Madeley, AA & Da G-3-193693 | Exxon Mobil Corporation only | Conroe (Cons. U) | Montgomery | 1 | 180 | 19.5K | May 2003 – Dec 2003 |
| Moody, E. G-3-214533 | Highmark Energy Operating, LLC only | Conroe (Cons. U) | Montgomery | 1 | 1 | 57.5K | Dec 2005 – Dec 2009 |
| Clark, Wm. G-3-193786 | Wheeler Operating Corporation only | Conroe (Cons. U) | Montgomery | 1 | 0 | 38.7K | Feb 2003 – May 2009 |
| Clark, Wm. G-3-193788 | Wheeler Operating Corporation only | Conroe (Cons. U) | Montgomery | 1 | 0 | 39.5K | Jan 2003 – May 2009 |
| Hooper, Fannie "A" G-3-194086 | Wheeler Operating Corporation only | Conroe (Cons. U) | Montgomery | 1 | 0 | 198K | Sep 2002 – Jun 2011 |
| Hooper, Fannie "A" G-3-194200 | Brown, H.L. Operating, L.L.C. only | Conroe (Cons. U) | Montgomery | 1 | 0 | 0 | — |
| Madeley, AA & Da G-3-194355 | Wheeler Operating Corporation only | Conroe (Cons. U) | Montgomery | 1 | 0 | 1.78K | Apr 2003 – Jun 2004 |
| Moorhead, E "B" G-3-194525 | Exxon Mobil Corporation only | Conroe (Cons. U) | Montgomery | 1 | 0 | 0 | — |
| Madeley, AA & Da G-3-194602 | Highmark Energy Operating, LLC only | Conroe (Cons. U) | Montgomery | 1 | 0 | 270K | Mar 2003 – Apr 2007 |
| Dobbins, C. L. G-3-195226 | Exxon Mobil Corporation only | Conroe (Cons. U) | Montgomery | 1 | 0 | 2.02K | Apr 2003 – May 2003 |
| Madeley, AA & Da G-3-195229 | Highmark Energy Operating, LLC only | Conroe (Cons. U) | Montgomery | 1 | 0 | 134K | Mar 2003 – Oct 2007 |
| Dunn -A- G-3-195314 | Wheeler Operating Corporation only | Conroe (Cons. U) | Montgomery | 1 | 0 | 213K | Jun 2003 – Apr 2021 |
| Madeley, AA & Da G-3-195362 | Highmark Energy Operating, LLC only | Conroe (Cons. U) | Montgomery | 1 | 0 | 8 | Mar 2007 – Mar 2007 |
| Madeley, AA & Da G-3-195363 | Exxon Mobil Corporation only | Conroe (Cons. U) | Montgomery | 1 | 0 | 0 | — |
| Madeley, AA & Da G-3-195368 | Highmark Energy Operating, LLC only | Conroe (Cons. U) | Montgomery | 1 | 0 | 821K | Jul 2003 – Oct 2024 |
| Madeley, AA & Da G-3-195370 | Highmark Energy Operating, LLC only | Conroe (Cons. U) | Montgomery | 1 | 0 | 45.5K | Jul 2003 – Jun 2005 |
| South Texas Development Co. "1" G-3-195388 | Highmark Energy Operating, LLC only | Conroe (Cons. U) | Montgomery | 1 | 0 | 2.26K | Jun 2003 – Oct 2003 |
| Madeley, AA & Da G-3-195390 | Exxon Mobil Corporation only | Conroe (Cons. U) | Montgomery | 1 | 0 | 0 | — |
| Madeley, AA & Da G-3-195503 | Highmark Energy Operating, LLC only | Conroe (Cons. U) | Montgomery | 1 | 0 | 267K | May 2003 – Mar 2025 |
| Jones, B. E. G-3-195813 | Wheeler Operating Corporation only | Conroe (Cons. U) | Montgomery | 1 | 0 | 1.6K | Jun 2003 – May 2009 |
| Madeley , AA & Da G-3-195814 | Highmark Energy Operating, LLC only | Conroe (Cons. U) | Montgomery | 1 | 0 | 6.47K | Jun 2003 – Feb 2006 |
| South Texas Development Co. "1" G-3-195818 | Highmark Energy Operating, LLC only | Conroe (Cons. U) | Montgomery | 1 | 0 | 1.07M | Aug 2003 – May 2018 |
| Dobbins, C. L. G-3-195879 | Wapiti Operating, LLC only | Conroe (Cons. U) | Montgomery | 1 | 0 | 8.67K | Jun 2003 – Aug 2003 |
| American Nat'l Bank G-3-195883 | Highmark Energy Operating, LLC only | Conroe (Cons. U) | Montgomery | 1 | 0 | 163K | May 2003 – Mar 2004 |
| Dobbins, C. L. G-3-196213 | Exxon Mobil Corporation only | Conroe (Cons. U) | Montgomery | 1 | 0 | 30.6K | Apr 2003 – Oct 2003 |
| Sullivan, E. B. State G-3-196945 | Highmark Energy Operating, LLC only | Conroe (Cons. U) | Montgomery | 1 | 0 | 44.7K | Jun 2003 – Mar 2008 |
| Moody, E. G-3-197037 | Highmark Energy Operating, LLC only | Conroe (Cons. U) | Montgomery | 1 | 0 | 70.5K | Jul 2003 – Jul 2006 |
| Hooper, Fannie G-3-197380 | Wheeler Operating Corporation only | Conroe (Cons. U) | Montgomery | 1 | 0 | 52.8K | Jan 2003 – Apr 2005 |
| Keystone Mills -B- G-3-197817 | Wheeler Operating Corporation only | Conroe (Cons. U) | Montgomery | 1 | 0 | 324 | Oct 2003 – Jun 2004 |
| Dobbins, C. L. G-3-197853 | Highmark Energy Operating, LLC only | Conroe (Cons. U) | Montgomery | 1 | 0 | 6.11K | May 2003 – May 2003 |
| Lewis, J. W. 'A' G-3-197855 | Highmark Energy Operating, LLC only | Conroe (Cons. U) | Montgomery | 1 | 0 | 102K | Oct 2003 – Feb 2016 |
| Dobbins, C. L. G-3-198709 | Highmark Energy Operating, LLC only | Conroe (Cons. U) | Montgomery | 1 | 0 | 184K | Aug 2004 – Dec 2009 |
| Moody, E. G-3-203954 | Highmark Energy Operating, LLC only | Conroe (Cons. U) | Montgomery | 1 | 0 | 352K | Oct 2004 – Dec 2016 |
| Dunn "B" G-3-211960 | Wheeler Operating Corporation only | Conroe (Cons. U) | Montgomery | 1 | 0 | 306K | Oct 2005 – Apr 2021 |
| Dunn "B" G-3-215906 | Wheeler Operating Corporation only | Conroe (Cons. U) | Montgomery | 1 | 0 | 158K | Apr 2006 – Apr 2021 |
| Hooper, Fannie G-3-182313 | Wheeler Operating Corporation only | Conroe (Cons. U) | Montgomery | 1 | 0 | 181K | Mar 2001 – Oct 2002 |
| Walters G-3-232609 | Wheeler Operating Corporation only | Conroe (Cons. U) | Montgomery | 1 | 0 | 0 | — |
| Dobbins, C. L. G-3-288612 | Highmark Energy Operating, LLC only | Conroe (Cons. U) | Montgomery | 1 | 0 | 55.7K | Feb 2020 – Aug 2023 |
| Lewis, J. W. "A" G-3-229101 | Denbury Onshore, LLC only | Conroe (Cons. U) | Montgomery | 1 | 0 | 315K | May 2007 – Aug 2019 |
| Pfaefflin, W. T. G-3-183611 | Exxon Mobil Corporation only | Conroe (Cons. U) | Montgomery | 1 | 0 | 424K | Dec 2000 – Jan 2003 |
| Hooper, Fannie G-3-184004 | Five-Jab, Inc. only | Conroe (Cons. U) | Montgomery | 1 | 0 | 8.02K | May 2001 – Nov 2002 |
| Hooper, Fannie G-3-184390 | Wheeler Operating Corporation only | Conroe (Cons. U) | Montgomery | 1 | 0 | 121K | May 2001 – Jan 2003 |
| Moorehead, A. G-3-187924 | Highmark Energy Operating, LLC only | Conroe (Cons. U) | Montgomery | 1 | 0 | 113K | Nov 2001 – Jan 2003 |
| Jones, B. E. G-3-193418 | Wheeler Operating Corporation only | Conroe (Cons. U) | Montgomery | 1 | 0 | 36K | Jan 2003 – May 2009 |
| Hooper, Fannie "A" G-3-193721 | Wheeler Operating Corporation only | Conroe (Cons. U) | Montgomery | 1 | 0 | 75.8K | Sep 2001 – Jun 2002 |