| Langham G-3-279197 | White Stride LLC only | Pine Island Bayou (Yegua EY-1L) | Jefferson | 1 | 210K | 1.57M | Jan 2015 – Mar 2026 |
| 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 Unit G-3-281180 | White Stride LLC only | Argo-Hawk (10400 Sand) | Jefferson | 1 | 106K | 696K | May 2016 – Mar 2026 |
| 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 |
| Ackerly Langham 24 O-10-43904 | Diamondback E&P LLC only | Spraberry (Trend Area) | Martin | 2 | 81.2K | 166K | May 2013 – Oct 2025 |
| Sweeney, J. J. Estate G-3-150468 | Diamond S Energy Company only | Langham Creek (Wilcox E-1) | Harris | 1 | 63K | 3.6M | Jun 1994 – Aug 1997 |
| Sweeney, J. J. Estate G-3-149298 | Diamond S Energy Company only | Langham Creek (Wilcox E-1) | Harris | 1 | 62.8K | 4.1M | Apr 1994 – Feb 2013 |
| 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, W. W. "B" G-3-143069 | Famcor Oil, Inc. only | Urbana (Wilcox 7250) | San Jacinto | 1 | 46.9K | 1.75M | Jan 1993 – Feb 2001 |
| Langham O-14-5423 | Oilwell Operators, Inc. only | Panhandle Gray County Field | Gray | 5 | 46.6K | 570K | Jan 1993 – Apr 2026 |
| 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-3-136316 | Alta Mesa Services, LP only | Urbana (Wilcox 10,200) | San Jacinto | 1 | 42.8K | 1.31M | Jan 1993 – Nov 1998 |
| Freudensprung G-3-121488 | Carter-Langham, Inc. only | Moores Orchard (Wilcox) | Fort Bend | 1 | 39.2K | 4M | Jan 1993 – Apr 2026 |
| Langham O-11-60265 | Diamondback E&P LLC only | Ackerly (Dean Sand) | Martin | 4 | 38.4K | 158K | Jan 1993 – Jan 2018 |
| Frensley Gas Unit 1 G-3-47436 | Diamond S Energy Company only | Langham Creek (Wilcox 12,700) | Harris | 1 | 37.2K | 2.08M | Jan 1993 – Jul 2004 |
| 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 Unit G-3-281876 | White Stride LLC only | Argo-Hawk (10400 Sand) | Jefferson | 1 | 18.5K | 125K | Feb 2017 – Mar 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 O-14-4862 | McClelland Creek Properties,inc. only | Panhandle Gray County Field | Gray | 1 | 13.8K | 77.9K | Jan 1993 – Mar 2026 |
| 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 |
| Sweeney, J. J. Estate G-3-161877 | Diamond S Energy Company only | Langham Creek (Upper Wilcox) | Harris | 1 | 12.4K | 1.53M | Feb 1997 – Feb 2015 |
| Langham, Emily "B" G-3-196823 | Amrwr, LLC only | Urbana (Wilcox Consolidated) | San Jacinto | 1 | 10.7K | 601K | Sep 2003 – Sep 2012 |
| 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 |
| Langham, M. G. G-3-138963 | Red Wolf Oil Company, Inc. only | Nance (Tex-Miss # 5) | Matagorda | 1 | 9.36K | 1.84M | Jan 1993 – Apr 2007 |
| 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 |
| Day Estate O-5-3520 | Langham Petroleum Expl. Corp. only | Tri-Cities (Bacon Lime) | Henderson | 1 | 6.76K | 180K | Feb 1996 – Oct 1999 |
| Sweeney Estate G-3-41995 | Texaco E & P Inc. only | Langham Creek (Wilcox 12,700) | Harris | 1 | 6.24K | 296K | Jan 1993 – Feb 1994 |
| 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 O-10-39699 | Energen Resources Corporation only | Spraberry (Trend Area) | Martin | 1 | 3.73K | 308 | Oct 2009 – Apr 2014 |
| Fasken -C- O-10-20335 | Langham Petroleum Expl. Corp. only | Spraberry (Trend Area) | Midland | 1 | 3.34K | 16.2K | Jan 1993 – Jun 1995 |
| Josey, Mari G-3-281516 | Josey Oil Company, Ltd. only | Langham Creek (Yegua 6900) | Harris | 1 | 3.17K | 358K | Sep 2015 – Mar 2018 |
| Josey Ranch "B" G-3-162019 | Contract Oil & Gas Service Co. only | Langham Creek (Wilcox E-1) | Harris | 1 | 3.06K | 440K | Feb 1997 – Jul 2000 |
| Josey Ranch Gas Unit 7 G-3-179076 | KCS Resources, Inc. only | Langham Creek (Wilcox E-1) | Harris | 1 | 2.9K | 828K | Aug 2000 – Mar 2005 |
| Langham, David Gas Unit G-13-234630 | Devon Energy Production Co, L.P. only | Newark, East (Barnett Shale) | Parker | 1 | 2.88K | 118K | Jun 2007 – Jan 2010 |