| Alta Jean -A- O-11-69906 | Sojourner Drilling Corporation only | Long-Hall (Tannehill) | Kent | 1 | 62.8K | 0 | Jan 2012 – Jul 2018 |
| Laird, Mack O-6-12035 | Long Trusts, The only | Wright Mountain (Pettit, Lower) | Smith | 1 | 62.5K | 21 | by Jan 1993 – Jul 2026 |
| Brown O-2-9699 | Headwaters Energy Partners, LLC only | Fred Long (Hockley 3850) | Bee | 2 | 62.2K | 81.2K | Apr 2011 – Aug 2018 |
| Utzman O-6-13017 | Long Trusts, The only | R.C.R. (Pettit -A-) | Gregg | 1 | 61.3K | 59K | by Jan 1993 – Oct 2024 |
| Hollis Unit O-2-10937 | Trailblazer Oil & Gas LLC only | Fred Long (Hockley 3850) | Bee | 1 | 60.1K | 88.2K | Sep 2014 – Mar 2021 |
| Hysaw-Hobson/Long O-2-7525 | Jaybird Operating, LLC only | Hobson | Karnes | 1 | 59.4K | 19 | by Jan 1993 – Dec 2021 |
| Long-Chambers 173/174 A O-14-9792 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Roberts | 1 | 59.3K | 993K | Aug 2022 – Aug 2026 |
| Barton, Martha et Al O-6-12785 | Long Trusts, The only | R.C.R. (Pettit -A-) | Gregg | 2 | 58.5K | 207K | by Jan 1993 – Oct 2023 |
| Cartmell Foundation O-6-14753 | Linder, John Operating Co., LLC only | Long Lake | Anderson | 1 | 58.4K | 0 | Mar 2008 – Aug 2026 |
| Melvina O-11-68953 | Halliburton Operating Company only | Long-Hall (Tannehill) | Kent | 1 | 58.1K | 3.28K | May 2006 – May 2009 |
| Cartmell O-6-13929 | Seistech Development, Inc. only | Long Lake (Woodbine) | Anderson | 2 | 56.9K | 2.56K | Jun 1999 – Jul 2006 |
| Houseman O-13-32773 | Longfellow Energy, LP only | Denison, S. (Woodlake) | Grayson | 1 | 56.4K | 133K | Aug 2013 – Aug 2026 |
| Longley, Guy O-6-11182 | Fortune Resources LLC only | Chapel Hill, NE. (Travis Peak) | Smith | 2 | 56.1K | 611K | by Jan 1993 – Jul 2026 |
| Long Tall Sally A O-3-27956 | BBL Operating Company LLC only | Giddings (Austin Chalk-3) | Robertson | 1 | 55.6K | 35.6K | Jan 2022 – Aug 2026 |
| Pruitt, E. J. D2 O-1-13964 | Delong, Horace only | Crown, E. (Navarro) | Atascosa | 8 | 54.8K | 0 | May 1995 – Aug 2023 |
| Fort Griffin Unit G-8-275945 | Petex only | Alongside (Miss.) | Shackelford | 1 | 54.2K | 688K | Nov 2014 – Aug 2026 |
| Doylene O-11-69613 | Sojourner Drilling Corporation only | Hal-Long (Tannehill) | Kent | 1 | 53.9K | 0 | Aug 2010 – Jul 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 – May 2026 |
| Houston Farms O-3-22875 | Tepco Resources, Inc. only | Longhorn Ranch (Stephanie Sand) | Galveston | 1 | 53.7K | 93.8K | Aug 1995 – Nov 2001 |
| McFarland, J. M. O-7-6978 | Long Trusts, The only | East Texas | Gregg | 3 | 53.1K | 31.1K | by Jan 1993 – Jul 2026 |
| Andrews Longley O-13-34155 | JMH Production, LLC only | Jefferson, NE. (Caddo Lime) | Archer | 4 | 52.2K | 41.2K | Sep 2022 – Aug 2026 |
| Long, A. G. Heirs 'A' G-1-272798 | Lewis Petro Properties, Inc. only | Briscoe Ranch (Eagleford) | Webb | 1 | 51.9K | 2.12M | Jun 2013 – Oct 2022 |
| Hahn O-2-9069 | C & E Operating, Inc. only | Long Mott,north (8200) | Calhoun | 1 | 51K | 55.7K | Feb 2006 – Jan 2013 |
| Fielden O-13-32271 | Longfellow Energy, LP only | Denison, S. (Woodlake) | Grayson | 1 | 49.9K | 414K | Dec 2011 – Aug 2026 |
| Perla Joe O-11-68983 | Halliburton Operating Company only | Long-Hall (Tannehill) | Kent | 1 | 49.3K | 8.81K | Aug 2006 – Jan 2012 |
| University-Longhorn 28 O-9-4626 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Upton | 2 | 48.6K | 136K | by Jan 1993 – Dec 2015 |
| Longley, Mary H. OU -B- O-13-27548 | Scout Energy Management LLC only | Chico, West (Conglomerate 5700) | Wise | 1 | 48.2K | 1.07M | by Jan 1993 – Aug 2026 |
| Tucker, E. O-6-770 | Ward Oil Co. only | Long Lake | Anderson | 1 | 48K | 2.1K | by Jan 1993 – Mar 2004 |
| Delong O-9-7778 | Fortune Energy, Inc. only | Lucky-Mag (Divide Sand) | Irion | 7 | 47.5K | 165K | by Jan 1993 – Aug 2009 |
| Alicia Lucille O-11-69064 | Halliburton Operating Company only | Long-Hall (Tannehill) | Kent | 1 | 46.9K | 5.11K | Feb 2007 – Nov 2011 |
| Longoria, Lisandro Etal Gas Unit G-4-134863 | Cody Energy LLC only | Lopez Ranch (Consolidated) | Brooks | 1 | 46.7K | 2.05M | by Jan 1993 – Jul 2011 |
| Nancy O-11-69019 | Sojourner Drilling Corporation only | Long-Hall (Tannehill) | Kent | 1 | 46.6K | 14K | Nov 2006 – Jul 2025 |
| Malone O-2-9341 | Trailblazer Oil & Gas LLC only | Fred Long (Hockley 3850) | Bee | 3 | 46.4K | 72.5K | Aug 2009 – May 2017 |
| Greer "B" O-6-13588 | Colorado-Swanson Lndng Oil&gas only | Longwood (Goodland Lime) | Harrison | 2 | 46.1K | 0 | Oct 1996 – Jul 2026 |
| Vastar Fee "A" G-3-168693 | Tema Oil and Gas Company only | Long Station (Wilcox) | Hardin | 1 | 46K | 748K | Apr 1998 – Apr 2007 |
| Broyles & Woolverton O-6-776 | Supreme Energy Company, Inc. only | Long Lake | Anderson | 5 | 45.7K | 97 | by Jan 1993 – Dec 2010 |
| Longoria, Lisandro Etal Gas Unit G-4-112164 | Omta Operating LLC only | Lopez Ranch (Consolidated) | Brooks | 1 | 45.6K | 1.68M | by Jan 1993 – Aug 2026 |
| Cartmell-Collier Unit O-6-13629 | Seistech Development, Inc. only | Long Lake (Woodbine) | Anderson | 1 | 45.5K | 3.45K | Feb 1997 – Jul 2006 |
| Anderson, J. B. O-6-774 | Double Diamond Petroleum, Inc. only | Long Lake | Anderson | 1 | 45.1K | 96 | by Jan 1993 – Jan 2004 |
| Long Rader O-13-28007 | Felderhoff Production Company only | Embrace (Bend Congl.) | Montague | 1 | 44.7K | 29.1K | by Jan 1993 – Mar 2006 |
| Betty Irene O-11-69074 | Halliburton Operating Company only | Long-Hall (Tannehill) | Kent | 1 | 44K | 26.4K | Mar 2007 – Mar 2012 |
| Long, A. G. Heirs 'A' G-1-272975 | Lewis Petro Properties, Inc. only | Briscoe Ranch (Eagleford) | Webb | 1 | 43.7K | 2M | Jun 2013 – Aug 2026 |
| Williams, Zelf O-6-808 | W & W Services, Inc. only | Long Lake | Anderson | 3 | 43K | 38 | by Jan 1993 – May 2007 |
| Long, A. G. Heirs 'A' G-1-293044 | Lewis Petro Properties, Inc. only | Briscoe Ranch (Eagleford) | Webb | 1 | 42.9K | 1.63M | May 2022 – Aug 2026 |
| Head O-3-25159 | Hackberry Oil & Gas LLC only | Long Prairie (Hackberry, 7800) | Orange | 1 | 42.1K | 983K | Sep 2007 – Feb 2015 |
| Boynton Heirs O-6-4397 | Haddad Boynton, LLC only | Longwood (Goodland Lime) | Harrison | 16 | 42K | 6.43K | by Jan 1993 – Aug 2026 |
| Long O-10-31512 | Endeavor Energy Resources L.P. only | B.C. (Canyon) | Howard | 1 | 41.9K | 152K | by Jan 1993 – Dec 2009 |
| Longhofer G-14-266459 | Remora Operating, LLC only | Lipscomb (Cleveland) | Lipscomb | 1 | 41.7K | 211K | Nov 2011 – Aug 2026 |
| Longmire, J. J., O/A O-3-8143 | Chaparral Energy, L.L.C. only | Sugar Valley, N. (Hurlock) | Matagorda | 2 | 41.6K | 12.1K | by Jan 1993 – Apr 2005 |
| Long, A. G. Heirs 'A' G-1-301431 | Lewis Petro Properties, Inc. only | Briscoe Ranch (Eagleford) | Webb | 1 | 40.9K | 1.51M | Dec 2025 – Jul 2026 |