| Stills Unit O-1-18700 | EOG Resources, Inc. only | Eagleville (Eagle Ford-1) | Gonzales | 14 | 4.64M | 7.81M | Dec 2015 – Jul 2026 |
| Daltex State 2 O-10-40031 | WPX Energy Permian, LLC only | Tunstill (Cherry Canyon -F-) | Loving | 8 | 537K | 880K | Mar 2010 – Jul 2026 |
| Costilla Mabee 32F O-10-35406 | Scout Energy Management LLC only | Mabee, North (Fusselman) | Andrews | 1 | 495K | 36.4K | May 1997 – Jul 2026 |
| State Tunstill 56-T2-6 O-10-46636 | BPX Operating Company only | Phantom (Wolfcamp) | Reeves | 1 | 484K | 1.87M | Sep 2014 – Jul 2026 |
| State Tunstill 56-T2-10 O-10-45440 | BPX Operating Company only | Phantom (Wolfcamp) | Reeves | 1 | 424K | 1.79M | Jun 2014 – Jul 2026 |
| EO Schawe O-10-38242 | WPX Energy Permian, LLC only | Tunstill (Cherry Canyon -F-) | Loving | 8 | 408K | 618K | Jan 2007 – May 2021 |
| Stillwagon O-3-25980 | Wildfire Energy Operating LLC only | Madisonville, W. (Woodbine -A-) | Madison | 4 | 344K | 1.5M | Jul 2012 – Jul 2026 |
| Fraser, TXL O-10-6880 | WPX Energy Permian, LLC only | Tunstill | Loving | 10 | 196K | 103K | Jan 1993 – Sep 2021 |
| TXL O-10-6854 | Petex only | Tunstill | — | 2 | 188K | 272 | Jan 1993 – Jul 2026 |
| Tunstill Unit O-10-36550 | Madison and Wright LLC only | Tunstill, East (Delaware) | Loving | 36 | 183K | 105K | Feb 2001 – Jul 2026 |
| Tunstill State 55-1-38 Lov O-10-48630 | Pdeh LLC only | Phantom (Wolfcamp) | Loving | 2 | 155K | 423K | Nov 2016 – Jul 2026 |
| Fraser TXL B O-10-39174 | WPX Energy Permian, LLC only | Tunstill (Cherry Canyon -F-) | Loving | 5 | 134K | 193K | Oct 2008 – May 2021 |
| Camp, J. C. O-10-6858 | Pearce, Roy F., Jr. only | Tunstill | Reeves | 10 | 131K | 713K | Jan 1993 – Jul 2026 |
| Costilla Lou Ann O-10-34187 | Oxyrock Operating, LLC only | Lou Ann (Fusselman) | Howard | 1 | 116K | 8.74K | Jun 1994 – Jul 2026 |
| Atlantic-Castillo Fee O-3-21447 | Jamex, Inc. only | Bessmay (Wilcox 6TH) | Jasper | 1 | 115K | 782K | Jan 1993 – Sep 2009 |
| Still, C. L. O-7-7078 | Patrick Production Company only | East Texas | — | 9 | 113K | 118 | Jan 1993 – Jul 2026 |
| Hughes, M.B. O-3-12121 | Jay Management Company, LLC only | Castillo (Yegua #7) | Jasper | 1 | 87.8K | 141K | Jan 1993 – Jul 2026 |
| Byram O-10-28864 | Kimlar Oil Company, Inc. only | Tunstill | Reeves | 8 | 86.6K | 246K | Jan 1993 – Jul 2026 |
| TXL O-10-6867 | Boyd & McWilliams Energy Group only | Tunstill | — | 2 | 85.2K | 218 | Jan 1993 – Jul 2026 |
| Still, R. H. O-7-8174 | Basa Resources, Inc. only | East Texas | — | 6 | 82.3K | 2.43K | Jan 1993 – Jul 2026 |
| Lindsay 11 O-10-42516 | WPX Energy Permian, LLC only | Tunstill (Cherry Canyon -F-) | Loving | 3 | 81.9K | 126K | Oct 2011 – Nov 2025 |
| Vastar-Castillo O-3-22669 | Parkwood Production, Inc. only | Buna, North (Yegua 12TH) | Jasper | 1 | 79.6K | 58.1K | Mar 1995 – Jul 2026 |
| BP O-3-25361 | Shoco Production LLC only | Castillo (Yegua 6-B) | Jasper | 1 | 78.2K | 65.1K | Nov 2008 – Jul 2026 |
| Leyendecker, R. F. O-1-2256 | Castillo Oil Company LLC only | Luling-Branyon | Caldwell | 20 | 77.4K | 81.2K | Jan 1993 – Jul 2026 |
| Northrup, P. G. Estate O-10-30453 | Kimlar Oil Company, Inc. only | Tunstill | Reeves | 1 | 77.1K | 156K | Jan 1993 – Jul 2026 |
| Moss-Texaco O-10-31834 | Kimlar Oil Company, Inc. only | Tunstill | Reeves | 4 | 76.6K | 377K | Jan 1993 – Jul 2026 |
| TXL -17- O-10-14451 | Synergy Oil & Gas, Inc. (A) only | Tunstill, East (Delaware) | — | 4 | 68.5K | 32.6K | Jan 1993 – Apr 2001 |
| Arco-Hughes "1" O-3-16032 | Hanson Production Company only | Castillo (Yegua 6-B) | Jasper | 1 | 58.9K | 614 | Jan 1993 – Jul 1998 |
| Sullivan, D. J. -B- O-4-5556 | Costilla Energy, Inc. only | Pita (D-5 B-C) | Brooks | 2 | 56.2K | 171K | Jan 1993 – Mar 1999 |
| Reeves -BF- Fee O-10-29261 | Kimlar Oil Company, Inc. only | Tunstill | Reeves | 3 | 51.7K | 263K | Jan 1993 – Jul 2026 |
| Fraser, TXL -C- O-10-6865 | WPX Energy Permian, LLC only | Tunstill | Loving | 11 | 49.7K | 11.3K | Jan 1993 – Sep 2021 |
| Tunstill O-10-27994 | Tres Roughneckas WTX LLC only | Crane Cowden | Crane | 1 | 45.3K | 5 | Jan 1993 – Jul 2026 |
| Meeker-Camp O-10-29835 | Pearce, Roy F., Jr. only | Tunstill | Reeves | 3 | 45.3K | 194K | Jan 1993 – Jul 2026 |
| Still -C- O-7-7191 | Basa Resources, Inc. only | East Texas | — | 3 | 43.9K | 78 | Jan 1993 – Jul 2026 |
| Costilla, Lou Ann O-10-40087 | Oxyrock Operating, LLC only | Spraberry (Trend Area) | Howard | 1 | 42.7K | 117K | Nov 2009 – Jul 2026 |
| Johnson, Jr. O-10-6876 | WPX Energy Permian, LLC only | Tunstill | Loving | 28 | 42.7K | 205K | Jan 1993 – May 2023 |
| Reeves Fee O-10-28497 | Kimlar Oil Company, Inc. only | Tunstill | Reeves | 2 | 41.8K | 104K | Jan 1993 – Jul 2026 |
| TXL -U- O-10-6884 | Finley Resources, Inc. only | Tunstill | Reeves | 5 | 41.1K | 170K | Jan 1993 – Jul 2026 |
| Texaco-Lindsay O-10-33267 | Contango Resources, LLC only | Tunstill | Loving | 1 | 40.4K | 26.4K | Jan 1993 – Nov 2022 |
| Robertson O-1-8806 | Castillo Oil Company LLC only | Salt Flat, West | Caldwell | 5 | 39.7K | 36.2K | Jan 1993 – Jul 2026 |
| Johnson O-10-39814 | WPX Energy Permian, LLC only | Tunstill | Loving | 5 | 33.8K | 12.9K | Dec 2009 – Aug 2020 |
| Tunstill Oil & Land Co. O-10-28952 | Mayjac I, LLC only | Matthews (Lower Cherry Canyon) | Reeves | 3 | 33.4K | 43.5K | Jan 1993 – Aug 2008 |
| Still, A. L. O-7-7190 | Exzena Oil Corp. only | East Texas | — | 18 | 32.9K | 26 | Jan 1993 – Jul 2026 |
| Blackwell, Raymond O-1-1111 | Castillo Oil Company LLC only | Luling-Branyon | Caldwell | 31 | 30.4K | 21 | Jan 1993 – Jul 2026 |
| Books '21' O-10-33920 | Costilla Energy, Inc. only | Patterson Lake (Wolfcamp) | Glasscock | 2 | 29.6K | 107K | Aug 1993 – Oct 2000 |
| Hamlin-L- O-10-35287 | Costilla Energy, Inc. only | Talbot (Canyon) | Howard | 1 | 29.4K | 39.7K | Feb 1997 – Apr 1999 |
| Still, R. H. O-7-6850 | Chevron U. S. A. Inc. only | East Texas | — | 26 | 27.4K | 7.9K | Jan 1993 – Dec 2002 |
| Fraser, TXL -D- O-10-6866 | WPX Energy Permian, LLC only | Tunstill | Loving | 3 | 26.5K | 4.97K | Jan 1993 – Dec 2024 |
| Stillwell O-13-21515 | Circle B Oil & Gas only | Queens Peak, W. (Caddo Congl) | Montague | 1 | 26.4K | 5.13K | Jan 1993 – Dec 2021 |
| Stilly O-13-26797 | Bto Venture, Inc. only | K-M-A | — | 1 | 26.3K | 20 | Jan 1993 – Jul 2008 |