| Longfellow Unit 3-13 G-10-300625 | TRP Operating LLC only | Phantom (Wolfcamp) | Reeves | 1 | 986K | 6.42M | Apr 2017 – Apr 2026 |
| Long-Bell G-6-215637 | Burk Royalty Co., Ltd. only | Brookeland (Austin Chalk, 8800) | Tyler | 1 | 806K | 3.9M | Aug 2003 – Apr 2026 |
| Longhorn 55-1-30 Unit G-10-284593 | Anadarko E&P Onshore LLC only | Phantom (Wolfcamp) | Loving | 1 | 680K | 3.18M | May 2018 – Apr 2026 |
| Nome-Long G-3-224330 | Samson Exploration, LLC only | Nome (Yegua Middle EY FB2) | Jefferson | 1 | 635K | 18.5M | Dec 2006 – May 2013 |
| John Phillip Long State 18-19 A G-10-292705 | Permian Resources Operating, LLC only | Phantom (Wolfcamp) | Reeves | 1 | 634K | 2.55M | Sep 2021 – Apr 2026 |
| Longfellow Unit 3-13 G-10-300633 | TRP Operating LLC only | Phantom (Wolfcamp) | Reeves | 1 | 589K | 2.09M | May 2019 – Apr 2026 |
| Longhorn 55-1-30 Unit G-10-286220 | Anadarko E&P Onshore LLC only | Phantom (Wolfcamp) | Loving | 1 | 548K | 2.56M | Dec 2018 – Apr 2026 |
| Longfellow Unit 3-13 G-10-300632 | TRP Operating LLC only | Phantom (Wolfcamp) | Reeves | 1 | 529K | 2.49M | May 2019 – Apr 2026 |
| Long 01 G-2-270584 | Marathon Oil EF LLC only | Sugarkane (Eagle Ford) | Karnes | 1 | 522K | 3.47M | Feb 2013 – Apr 2026 |
| Longhorn 55-1-30 Unit G-10-288638 | Anadarko E&P Onshore LLC only | Phantom (Wolfcamp) | Loving | 1 | 462K | 2.14M | Jul 2019 – Apr 2026 |
| Long Yuengling G-10-283646 | Resolute Natural Res. Co., LLC only | Phantom (Wolfcamp) | Reeves | 1 | 459K | 2.47M | Nov 2017 – Apr 2026 |
| Nome-Long G-3-239842 | Samson Exploration, LLC only | Nome (Yegua Middle EY FB2) | Jefferson | 1 | 450K | 7.91M | Jun 2008 – May 2013 |
| John Phillip Long State 18-19 B G-10-292637 | Permian Resources Operating, LLC only | Phantom (Wolfcamp) | Reeves | 1 | 448K | 1.87M | Sep 2021 – Apr 2026 |
| Longfellow Unit 3-13 G-10-300631 | TRP Operating LLC only | Phantom (Wolfcamp) | Reeves | 1 | 424K | 2.83M | Apr 2017 – Apr 2026 |
| Longway 16 Unit G-10-292737 | Permian Resources Operating, LLC only | Phantom (Wolfcamp) | Reeves | 1 | 404K | 1.94M | Oct 2021 – Apr 2026 |
| Longfellow Unit 3-13 G-10-300634 | TRP Operating LLC only | Phantom (Wolfcamp) | Reeves | 1 | 402K | 3.06M | May 2019 – Apr 2026 |
| Long Yuengling G-10-283149 | Resolute Natural Res. Co., LLC only | Phantom (Wolfcamp) | Reeves | 1 | 391K | 3.63M | Nov 2017 – Apr 2026 |
| John Phillip Long State 18-19 C G-10-292616 | Permian Resources Operating, LLC only | Phantom (Wolfcamp) | Reeves | 1 | 377K | 1.96M | Sep 2021 – Apr 2026 |
| Longway 16 Unit G-10-292747 | Permian Resources Operating, LLC only | Phantom (Wolfcamp) | Reeves | 1 | 355K | 1.87M | Oct 2021 – Apr 2026 |
| Longhorn 55-1-30 Unit G-10-289796 | Anadarko E&P Onshore LLC only | Phantom (Wolfcamp) | Loving | 1 | 321K | 1.8M | Dec 2019 – Apr 2026 |
| Long 01 G-2-270364 | Marathon Oil EF LLC only | Sugarkane (Eagle Ford) | Karnes | 1 | 321K | 1.7M | Feb 2013 – Apr 2026 |
| Long 01 G-2-269195 | Marathon Oil EF LLC only | Sugarkane (Eagle Ford) | Karnes | 1 | 314K | 1.59M | Feb 2013 – Apr 2026 |
| Longfellow Unit 3-13 G-10-300630 | TRP Operating LLC only | Phantom (Wolfcamp) | Reeves | 1 | 296K | 1.91M | Apr 2017 – Apr 2026 |
| Longway 16 Unit G-10-292745 | Permian Resources Operating, LLC only | Phantom (Wolfcamp) | Reeves | 1 | 295K | 2.03M | Oct 2021 – Apr 2026 |
| Kirk 01 - Long 01 A G-2-293290 | Marathon Oil EF LLC only | Sugarkane (Eagle Ford) | Karnes | 1 | 279K | 2.13M | Jul 2022 – Apr 2026 |
| Long 01 G-2-258285 | Marathon Oil EF LLC only | Sugarkane (Eagle Ford) | Karnes | 1 | 278K | 1.6M | Aug 2010 – Dec 2024 |
| Cabrito Long State A G-10-291711 | Permian Resources Operating, LLC only | Phantom (Wolfcamp) | Reeves | 1 | 263K | 1.19M | Jun 2021 – Apr 2026 |
| Deming-Long SA1 G-2-298466 | Marathon Oil EF LLC only | Sugarkane (Eagle Ford) | Karnes | 1 | 232K | 2.19M | Sep 2024 – Apr 2026 |
| Longway 16 Unit G-10-292777 | Permian Resources Operating, LLC only | Phantom (Wolfcamp) | Reeves | 1 | 231K | 2.07M | Oct 2021 – Apr 2026 |
| Longhorn G-6-224743 | Burk Royalty Co., Ltd. only | Brookeland (Austin Chalk, 8800) | Tyler | 1 | 222K | 3.68M | Jun 2006 – Apr 2026 |
| Cabrito Long State B G-10-291712 | Permian Resources Operating, LLC only | Phantom (Wolfcamp) | Reeves | 1 | 200K | 1.14M | Jun 2021 – Apr 2026 |
| Nome-Long G-3-234177 | Samson Lone Star, LLC only | Nome (Yegua Middle EY FB2) | Jefferson | 1 | 174K | 4.86M | Jan 2008 – Feb 2010 |
| Lisandro Longoria et al Gas Unit G-4-146950 | Omta Operating LLC only | Lopez Ranch (Consolidated) | Brooks | 1 | 161K | 5.92M | Aug 1993 – Apr 2026 |
| Kirk-Long SA1 G-2-299069 | Marathon Oil EF LLC only | Sugarkane (Eagle Ford) | Karnes | 1 | 157K | 1.32M | Feb 2025 – Apr 2026 |
| Longhorn a Eagle Ford Pooled UT G-1-296940 | Trinity Operating (Usg), LLC only | Eagleville (Eagle Ford-1) | Frio | 1 | 142K | 526K | Feb 2019 – Apr 2026 |
| Kirk-Long SA2 G-2-299268 | Marathon Oil EF LLC only | Sugarkane (Eagle Ford) | Karnes | 1 | 125K | 1.07M | Feb 2025 – Apr 2026 |
| New Lum / Black Stone G-3-280165 | Square Mile Energy, L.L.C. only | Long Prairie (12300) | Newton | 1 | 118K | 3.53M | Oct 2015 – Apr 2026 |
| Longhorn a Eagle Ford Pooled UT G-1-297019 | Trinity Operating (Usg), LLC only | Eagleville (Eagle Ford-1) | Frio | 1 | 110K | 294K | Feb 2019 – Apr 2026 |
| Longley, H. B. G-3-228413 | Olipdp II, LLC only | Dartez (Hackberry) | Orange | 1 | 103K | 7.07M | Apr 2007 – Sep 2020 |
| Longhorn a Eagle Ford Pooled UT G-1-296935 | Trinity Operating (Usg), LLC only | Eagleville (Eagle Ford-1) | Frio | 1 | 101K | 534K | Feb 2019 – Apr 2026 |
| Longhorn a Eagle Ford Pooled UT G-1-296936 | Trinity Operating (Usg), LLC only | Eagleville (Eagle Ford-1) | Frio | 1 | 88.1K | 494K | Feb 2019 – Apr 2026 |
| Lisandro Longoria et al Gas Unit G-4-169606 | Omta Operating LLC only | Lopez Ranch (Consolidated) | Brooks | 1 | 87.6K | 2.11M | May 1998 – Apr 2026 |
| Powell Lumber Co., et Al G-3-103225 | Amrwr, LLC only | Long Prairie (11800) | Orange | 1 | 82K | 3.17M | Jan 1993 – Feb 2013 |
| Lisandro Longoria et al Gas Unit G-4-159930 | Omta Operating LLC only | Lopez Ranch (Consolidated) | Brooks | 1 | 79.2K | 2.36M | Jul 1996 – Apr 2026 |
| Longs Peak State Unit G-10-288699 | Apache Corporation only | Alpine High (Cons) | Reeves | 1 | 73.3K | 2.6M | Jul 2019 – Mar 2026 |
| Longoria, Octavio et Al G-4-170870 | Omta Operating LLC only | Lopez Ranch (Consolidated) | Brooks | 1 | 72.1K | 1.72M | Jul 1998 – Apr 2026 |
| McDonald-Hahn G-2-193275 | C & E Operating, Inc. only | Long Mott (7800) | Calhoun | 1 | 67.8K | 479K | Jan 2003 – May 2007 |
| Longoria, Lisandro Etal Gas Unit G-4-112176 | Omta Operating LLC only | Lopez Ranch (Consolidated) | Brooks | 1 | 66.7K | 3.46M | Jan 1993 – Apr 2026 |
| A. G. Long Gas Unit G-4-166564 | Varas Energy Operating Company, only | Cuba Libre (3RD Hinnant) | Webb | 1 | 53.8K | 3.17M | Feb 1998 – Apr 2026 |
| Fort Griffin Unit G-8-275945 | Petex only | Alongside (Miss.) | Shackelford | 1 | 52.3K | 676K | Nov 2014 – Apr 2026 |