| Langham, Emily "A" G-3-154380 | Energy Twenty Operating LLC only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 113K | 4.06M | Jan 1995 – Jan 2020 |
| Langham, Emily -A- G-3-128836 | Energy Twenty Operating LLC only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 90K | 3.18M | Jan 1993 – May 2016 |
| Langham, Emily "A" G-3-53953 | Energy Twenty Operating LLC only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 85.2K | 3.2M | Jan 1993 – Jan 2020 |
| Emily Langham "A" G-3-241771 | Orx Resources, L.L.C. only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 54.9K | 1.82M | Jun 2008 – Apr 2026 |
| Langham, Emily -A- G-3-131814 | Amrwr, LLC only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 53.4K | 2.37M | Jan 1993 – Mar 2016 |
| Langham, Emily "A" G-3-231489 | Orx Resources, L.L.C. only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 46.3K | 1.36M | May 2007 – Apr 2026 |
| Langham, Emily "A" G-3-182259 | Energy Twenty Operating LLC only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 43.3K | 1.61M | Mar 2001 – Jan 2020 |
| Langham, Emily "A" G-3-218382 | Orx Resources, L.L.C. only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 32K | 1.72M | May 2006 – Feb 2026 |
| Langham, Emily "A" G-3-230078 | Orx Resources, L.L.C. only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 30.8K | 1.84M | May 2007 – Apr 2026 |
| Langham, Emily -B- G-3-191855 | Energy Twenty Operating LLC only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 29.9K | 869K | Oct 2002 – Aug 2015 |
| Emily Langham A G-3-264830 | Orx Resources, L.L.C. only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 29.4K | 672K | Sep 2011 – Apr 2026 |
| Langham, W. W. -B- G-3-185889 | Alta Mesa Services, LP only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 25.4K | 863K | Mar 2001 – Jul 2011 |
| Langham, Emily -B- G-3-142786 | Energy Twenty Operating LLC only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 23.1K | 908K | Jan 1993 – Aug 2016 |
| Emily Langham A G-3-262246 | Orx Resources, L.L.C. only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 20.2K | 1.13M | Jan 2011 – Feb 2026 |
| Langham, Emily "A" G-3-232643 | Energy Twenty Operating LLC only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 16.7K | 904K | Oct 2007 – Jan 2020 |
| Langham, W. W. -D- G-3-134097 | Alta Mesa Services, LP only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 15.6K | 793K | Jan 1993 – Jan 2012 |
| Langham, Emily "A" G-3-235543 | Orx Resources, L.L.C. only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 12.9K | 580K | Mar 2008 – Feb 2026 |
| Langham, Emily "B" G-3-196823 | Amrwr, LLC only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 10.7K | 601K | Sep 2003 – Sep 2012 |
| Turner, J. B. G-3-124301 | Galloway Energy Co. only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 10.6K | 414K | Jan 1993 – Apr 2007 |
| Langham, Emily "A" G-3-233266 | Energy Twenty Operating LLC only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 10.2K | 658K | Nov 2007 – Jan 2020 |
| Emily Langham A G-3-258474 | Energy Twenty Operating LLC only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 9.9K | 500K | May 2010 – Sep 2016 |
| Emily Langham "A" G-3-261185 | Energy Twenty Operating LLC only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 8.02K | 597K | Sep 2010 – Nov 2017 |
| Langham, Emily A G-3-260042 | Amrwr, LLC only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 8K | 344K | Aug 2010 – Jul 2018 |
| Emily Langham A G-3-264828 | Orx Resources, L.L.C. only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 7.27K | 358K | Jul 2011 – Apr 2026 |
| Emily Langham A G-3-259641 | Energy Twenty Operating LLC only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 7.22K | 292K | Jun 2010 – Jul 2018 |
| Langham, W. W. -D- G-3-193090 | Alta Mesa Services, LP only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 6.85K | 321K | Jan 2003 – Nov 2005 |
| Langham Unit G-3-126789 | Galloway Energy Co. only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 4.18K | 273K | Jan 1993 – Oct 1994 |
| Emily Langham A G-3-258507 | Energy Twenty Operating LLC only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 3.77K | 299K | Jul 2010 – Jan 2020 |
| Langham, Emily -B- G-3-132643 | Alta Mesa Services, LP only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 1.83K | 380K | Jan 1993 – Apr 2012 |
| Langham, Emily "A" G-3-107545 | Orx Resources, L.L.C. only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 0 | 0 | — |
| Langham, Emily A G-3-190234 | Orx Resources, L.L.C. only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 0 | 0 | — |
| Langham, Emily -A- G-3-60934 | Energy Twenty Operating LLC only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 0 | 0 | — |
| Ernest Cochran Trust G-3-265499 | Alta Mesa Services, LP only | Urbana (Wilcox Consolidated) | Polk | 1 | 0 | 0 | — |