| Langley 2-36 O-10-45223 | TRP Operating LLC only | Phantom (Wolfcamp) | Reeves | 2 | 622K | 2.17M | Mar 2014 – Apr 2026 |
| Langley Unit O-6-12341 | Neches Oil & Gas Company, Inc. only | Texarkana, West (Smackover) | Bowie | 2 | 487K | 183K | Jan 1993 – Mar 2026 |
| Langley Unit G-2-273529 | EOG Resources, Inc. only | De Witt (Eagle Ford Shale) | De Witt | 1 | 81.2K | 1.2M | Feb 2014 – Apr 2026 |
| Langley 43 O-10-47221 | Ovintiv USA Inc. only | Spraberry (Trend Area) | Howard | 2 | 71.3K | 291K | Feb 2015 – Jan 2025 |
| Langley 41A O-10-43887 | SMC Oil & Gas, Inc. only | Garden City, S. (Wolfcamp) | Howard | 1 | 55.2K | 146K | Jan 2013 – Mar 2026 |
| Langley -B- O-10-20947 | Melrose Operating Company only | Turner-Gregory (Clear Fork) | Mitchell | 3 | 49.2K | 21 | Jan 1993 – Sep 2002 |
| Langley AH1 G-13-294718 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Denton | 1 | 48.8K | 1.74M | Sep 2022 – Apr 2026 |
| Langley 41 O-10-45122 | SMC Oil & Gas, Inc. only | Garden City, S. (Wolfcamp) | Howard | 1 | 37.3K | 87.1K | Mar 2014 – Mar 2026 |
| Langley 41B O-10-44728 | SMC Oil & Gas, Inc. only | Garden City, S. (Wolfcamp) | Howard | 1 | 30.5K | 98.3K | Sep 2013 – Mar 2026 |
| Intercoastal Farms Unit O-1-13185 | Langley, Carl A. only | Pearsall (Austin Chalk) | Dimmit | 1 | 28K | 68.2K | Jan 1993 – Oct 1994 |
| Langley "a" Unit G-13-209004 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Denton | 1 | 23.4K | 851K | Apr 2005 – Apr 2026 |
| Langley AH2 G-13-294631 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Denton | 1 | 21.2K | 1.21M | Sep 2022 – Apr 2026 |
| Langley "a" Unit G-13-208511 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Denton | 1 | 20.9K | 719K | Mar 2005 – Apr 2026 |
| Langley "a" Unit G-13-207473 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Denton | 1 | 20.3K | 849K | Mar 2005 – Apr 2026 |
| Langley 43 O-10-46293 | SM Energy Company only | Garden City, S. (Wolfcamp) | Howard | 2 | 19.2K | 49K | Nov 2014 – Mar 2021 |
| Langley AH3 G-13-294602 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Denton | 1 | 18.6K | 1.26M | Sep 2022 – Apr 2026 |
| Langley -A- O-10-20946 | Melrose Operating Company only | Turner-Gregory (Clear Fork) | Mitchell | 3 | 17.2K | 21 | Jan 1993 – Sep 2002 |
| Langley Unit G-13-210625 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Denton | 1 | 16.9K | 719K | Jul 2005 – Apr 2026 |
| Langley O-10-38979 | SMC Oil & Gas, Inc. only | Spraberry (Trend Area) | Howard | 2 | 16.8K | 35.4K | Oct 2008 – Mar 2026 |
| Langley "a" Unit G-13-200625 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Denton | 1 | 14.3K | 549K | Jan 2004 – Apr 2026 |
| Langley "a" Unit G-13-218667 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Denton | 1 | 14K | 703K | Apr 2006 – Apr 2026 |
| Langley Unit G-13-198660 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Denton | 1 | 13.2K | 583K | Dec 2003 – Apr 2026 |
| Langley, J.C. GU 1 G-6-231645 | Texian Operating Company, LLC only | Trawick (Pettit-TP Cons.) | Nacogdoches | 1 | 13.2K | 569K | Jul 2007 – Dec 2025 |
| Langley Unit G-13-180619 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Denton | 1 | 12.5K | 795K | Dec 2000 – Mar 2019 |
| Langley Unit G-13-200626 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Denton | 1 | 12.4K | 582K | Feb 2004 – Apr 2026 |
| Langley "a" Unit G-13-217620 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Denton | 1 | 11.4K | 508K | Apr 2006 – Apr 2026 |
| Langley, F. A. O-10-20945 | Melrose Operating Company only | Turner-Gregory (Clear Fork) | Mitchell | 1 | 9.6K | 21 | Jan 1993 – Sep 2002 |
| Langley Unit G-13-195310 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Denton | 1 | 9.58K | 427K | May 2003 – Apr 2026 |
| Langley "A" G-13-213549 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Denton | 1 | 8.95K | 533K | Nov 2005 – Apr 2026 |
| Langley Unit G-13-194317 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Denton | 1 | 7.99K | 572K | Apr 2003 – Apr 2026 |
| Langley Unit G-13-203610 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Denton | 1 | 7.7K | 401K | Aug 2004 – Apr 2026 |
| Langley, J.C. GU 1 G-6-223015 | Texian Operating Company, LLC only | Trawick (Pettit-TP Cons.) | Nacogdoches | 1 | 7.03K | 1.52M | Oct 2006 – Apr 2026 |
| Langley B/W O-10-17932 | Melrose Operating Company only | Turner-Gregory (Clear Fork) | Mitchell | 1 | 6.74K | 66 | Jan 1993 – Sep 2002 |
| Langley, J.C. GU 1 G-6-215783 | Texian Operating Company, LLC only | Trawick (Pettit-TP Cons.) | Nacogdoches | 1 | 6.72K | 497K | Sep 2005 – Apr 2026 |
| Langley Unit G-13-203248 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Denton | 1 | 6.5K | 461K | Jul 2004 – May 2024 |
| Langley Unit G-13-217621 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Denton | 1 | 6.25K | 438K | Mar 2006 – Apr 2026 |
| Langley, J.C. GU 1 G-6-238698 | Texian Operating Company, LLC only | Trawick (Pettit-TP Cons.) | Nacogdoches | 1 | 6.11K | 1.3M | Apr 2008 – Apr 2026 |
| Langley Unit G-13-210112 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Denton | 1 | 5.03K | 402K | Jun 2005 – Apr 2026 |
| Langley Unit G-13-216320 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Denton | 1 | 4.44K | 436K | Mar 2006 – Apr 2026 |
| Langley O-10-17775 | Melrose Operating Company only | Turner-Gregory (Clear Fork) | Mitchell | 1 | 3.51K | 66 | Jan 1993 – Sep 2002 |
| Langley, J.C. GU 1 G-6-228552 | Texian Operating Company, LLC only | Trawick (Pettit-TP Cons.) | Nacogdoches | 1 | 3.41K | 1.05M | Apr 2007 – Apr 2026 |
| Hebert Estate O-3-3861 | Langley, Carl A. only | Sour Lake | Hardin | 1 | 2.29K | 21 | Jan 1993 – Sep 2025 |
| Terry, J. H. O-3-3862 | Langley, Carl A. only | Sour Lake | Hardin | 1 | 775 | 21 | Jan 1993 – Sep 2025 |
| Langley, J. C. G-6-222153 | Samson Lone Star, LLC only | Trawick (James) | Nacogdoches | 1 | 304 | 71.6K | Mar 2006 – Jan 2007 |
| Langley-Allbright O-1-14938 | Chaparral Natural Resources,inc. only | Fentress (1750) | Caldwell | 1 | 145 | 0 | Jun 2008 – Aug 2008 |
| Langley, R. A.-Porter, E. O-1-3746 | Lucros International Corporation only | Somerset | Atascosa | 4 | 129 | 8 | May 1993 – Jan 1994 |
| Langley Hrs. O-1-1634 | Great Plains Resources, Inc. only | Somerset | Atascosa | 7 | 110 | 16 | May 1993 – May 1998 |
| Langley, A. G. O-1-1633 | Great Plains Resources, Inc. only | Somerset | Atascosa | 4 | 80 | 7 | May 1993 – May 1998 |
| Langley-Allbright O-1-18621 | Higher Standard Oil Company,inc. only | Fentress (1750) | Caldwell | 1 | 22 | 0 | Sep 2015 – Dec 2015 |
| Langley G-13-199496 | BKV North Texas, LLC only | Newark, East (Barnett Shale) | Tarrant | 1 | 3 | 2.75M | Nov 2003 – Apr 2026 |