| Bains Montgomery Unit #3 O-3-27184 | Triangle Three Resources L.L.C. only | Brookshire | Waller | 1 | 13.7K | 0 | Oct 2016 – Jul 2025 |
| Perlitz-Wrangler O-1-14677 | Munoz Farms Operating Co., LLC only | Pilosa (Olmos) | Zavala | 1 | 13.4K | 0 | Jan 2006 – Aug 2026 |
| Langley Unit G-13-198660 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Denton | 1 | 13.3K | 584K | Dec 2003 – Jul 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 | 584K | Feb 2004 – Jul 2026 |
| Holy Comforter Unit G-3-173198 | Timberwolf Energy, Inc. only | Angleton, South (F-9 Block D) | Brazoria | 1 | 12K | 665K | May 1999 – Sep 2007 |
| 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 – Jul 2026 |
| Burnett Triangle G-11-127501 | Wagner Oil Company only | Moon Camp (Palo Pinto Reef, LO) | Cottle | 1 | 11.1K | 987K | by Jan 1993 – Jul 2018 |
| Bains Montgomery Unit #4 O-3-27185 | Triangle Three Resources L.L.C. only | Brookshire | Waller | 1 | 10.5K | 0 | Nov 2016 – Jul 2025 |
| Coyne Unit O-1-6572 | Triangle Oil Producers only | Pearsall (Austin Chalk) | La Salle | 1 | 10.4K | 10.1K | by Jan 1993 – Dec 1998 |
| Gottschalk, Lynda O-9-13561 | Triangle P Development Corp. only | Carly (Gardner Sd., Upper) | Runnels | 1 | 9.95K | 29.5K | Feb 1994 – Apr 2000 |
| Haecker, Jack O-1-9369 | Tanglehead Operating, LLC only | La Vernia | Guadalupe | 12 | 9.68K | 82 | by Jan 1993 – Aug 2022 |
| Langley, F. A. O-10-20945 | Melrose Operating Company only | Turner-Gregory (Clear Fork) | Mitchell | 1 | 9.6K | 21 | by 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 | 428K | May 2003 – Jul 2026 |
| Williamson G-3-213140 | Timberwolf Energy, Inc. only | Angleton, S. (Frio 13 FB-B) | Brazoria | 1 | 9.43K | 257K | Feb 2005 – Aug 2026 |
| Waiters, John T. O-1-7181 | Tanglehead Operating, LLC only | La Vernia | Guadalupe | 8 | 9.41K | 95 | by Jan 1993 – Aug 2022 |
| Balkum, L. T. O-9-11999 | Triangle P Development Corp. only | Cecil T. (Palo Pinto) | Runnels | 1 | 9.25K | 120 | by Jan 1993 – Jan 2003 |
| Williamson O-3-19074 | Baxter, Murphy H. only | Angleton, South (F-9B) | Brazoria | 1 | 9.2K | 10.8K | by Jan 1993 – Oct 1995 |
| Langley "A" G-13-213549 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Denton | 1 | 8.98K | 536K | Nov 2005 – Jul 2026 |
| Ranch Seven O-8-29164 | Fortuna Exploration, Inc. only | Triangle -H- (Lower Gray) | Coleman | 1 | 8.68K | 8.76K | Feb 2002 – Aug 2015 |
| Penshorn, Thekla O-1-875 | Tanglehead Operating, LLC only | La Vernia | Wilson | 5 | 8.67K | 93 | by Jan 1993 – Aug 2022 |
| Kolodzie, William O-1-6883 | Tanglehead Operating, LLC only | La Vernia | Guadalupe | 7 | 8.45K | 95 | by Jan 1993 – Aug 2022 |
| Penshorn, Harvey G. O-1-10631 | Tanglehead Operating, LLC only | La Vernia | Wilson | 2 | 8.05K | 95 | by Jan 1993 – Aug 2022 |
| Langley Unit G-13-194317 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Denton | 1 | 7.99K | 574K | Apr 2003 – Jul 2026 |
| Langley Unit G-13-203610 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Denton | 1 | 7.7K | 402K | Aug 2004 – Jul 2026 |
| Lenz, J. -A- O-1-10023 | Tanglehead Operating, LLC only | La Vernia | Guadalupe | 2 | 7.63K | 35 | by Jan 1993 – Aug 2022 |
| Triangle G-3-234433 | Noble Energy Inc only | Chocolate Bayou ( Ho.fms. UP) | Brazoria | 1 | 7.33K | 349K | Aug 2007 – Oct 2008 |
| Langley, J.C. GU 1 G-6-223015 | Texian Operating Company, LLC only | Trawick (Pettit-TP Cons.) | Nacogdoches | 1 | 7.04K | 1.53M | Oct 2006 – Aug 2026 |
| Langley B/W O-10-17932 | Melrose Operating Company only | Turner-Gregory (Clear Fork) | Mitchell | 1 | 6.74K | 66 | by Jan 1993 – Sep 2002 |
| Langley, J.C. GU 1 G-6-215783 | Texian Operating Company, LLC only | Trawick (Pettit-TP Cons.) | Nacogdoches | 1 | 6.73K | 499K | Sep 2005 – Aug 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 |
| Triangle J G-13-279759 | FX Energy Operating, LLC only | KRS (Marble Falls) | Jack | 1 | 6.34K | 281K | Dec 2015 – Sep 2025 |
| Williamson-Retrieve Unit No. 1 G-3-173119 | Timberwolf Energy, Inc. only | Angleton, South (F-9 Block D) | Brazoria | 1 | 6.31K | 739K | Mar 1999 – Aug 2026 |
| Langley Unit G-13-217621 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Denton | 1 | 6.25K | 439K | Mar 2006 – Jul 2026 |
| Burnett-Triangle O-11-66059 | Wagner Oil Company only | Moon Camp (Palo Pinto Reef, LO) | Cottle | 2 | 6.14K | 259K | by Jan 1993 – Dec 1996 |
| Langley, J.C. GU 1 G-6-238698 | Texian Operating Company, LLC only | Trawick (Pettit-TP Cons.) | Nacogdoches | 1 | 6.12K | 1.3M | Apr 2008 – Aug 2026 |
| Triangle J G-13-279760 | FX Energy Operating, LLC only | KRS (Marble Falls) | Palo Pinto | 1 | 6.07K | 104K | Dec 2015 – Jan 2024 |
| Harrison G-3-230867 | Slawson Exploration Company, Inc only | Angleton, South (12,100 Frio) | Brazoria | 1 | 5.87K | 117K | Jul 2007 – Mar 2009 |
| Bains Montgomery Unit #11 O-3-27253 | Triangle Three Resources L.L.C. only | Brookshire | Waller | 1 | 5.68K | 0 | Feb 2017 – Jul 2025 |
| Langley Unit G-13-210112 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Denton | 1 | 5.03K | 404K | Jun 2005 – Jul 2026 |
| Munson Unit G-3-186950 | Alpine Resources, Inc. only | Angleton, South (12,100 Frio) | Brazoria | 1 | 4.76K | 380K | May 2001 – Oct 2001 |
| Ankenman Family G-3-201848 | Noble Energy Inc only | Angleton (Tex-Miss 11,000) | Brazoria | 1 | 4.72K | 653K | May 2004 – Apr 2011 |
| Langley Unit G-13-216320 | Lime Rock Resources IV-a, L.P. only | Newark, East (Barnett Shale) | Denton | 1 | 4.44K | 440K | Mar 2006 – Jul 2026 |
| Chadbourne Ranch 298 O-9-13663 | Triangle P Development Corp. only | Fort Chadbourne | Runnels | 1 | 4.06K | 5.32K | Jul 1994 – Oct 2001 |
| Neugebauer O-3-24818 | Triangle Three Resources L.L.C. only | Brookshire | Waller | 2 | 3.52K | 2.32K | Dec 2005 – Mar 2007 |
| Langley O-10-17775 | Melrose Operating Company only | Turner-Gregory (Clear Fork) | Mitchell | 1 | 3.51K | 66 | by 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 | 1.06M | Apr 2007 – Aug 2026 |
| Triangle Development Co. G-3-175126 | Elliott Oil & Gas Operating Co. only | Chocolate Bayou, N. (10400) | Brazoria | 1 | 3.29K | 217K | Aug 1999 – Apr 2005 |
| Minns - Paley 1 O-3-24898 | Triangle Three Resources L.L.C. only | Brookshire | Waller | 2 | 3.15K | 11.6K | Feb 2006 – Jan 2007 |