| Mitchell Fee O-13-11451 | Quatro Oil and Gas, Inc. only | K-M-A | Wichita | 33 | 828K | 93 | by Jan 1993 – Aug 2026 |
| Whitwell N Unit O-1-18470 | Verdun Oil EF II LLC only | Eagleville (Eagle Ford-1) | La Salle | 3 | 824K | 1.63M | May 2015 – Aug 2026 |
| Terrell O-11-201 | Crescent Energy Operating, LLC only | Amrow (Devonian) | Gaines | 2 | 823K | 23 | by Jan 1993 – Aug 2026 |
| Ellie 20C-29-G O-9-20919 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Upton | 2 | 820K | 2.44M | Jul 2019 – Aug 2026 |
| Shell-More O-11-66702 | Texland Petroleum, L.P. only | Ownby, West (San Andres) | Yoakum | 9 | 817K | 318K | by Jan 1993 – Aug 2026 |
| Powell 35X O-9-19107 | Ovintiv USA Inc. only | Spraberry (Trend Area) | Upton | 4 | 815K | 1.99M | Jul 2015 – Aug 2026 |
| Flache, Mitchell O-11-63564 | Aviator Energy, LLC only | Brownfield, S. (Fusselman) | Terry | 3 | 815K | 40.7K | by Jan 1993 – Aug 2026 |
| Pierson, William Estate O-11-5202 | Hilcorp Energy Company only | Russell (Glorieta 6100) | Gaines | 11 | 814K | 524K | by Jan 1993 – Aug 2026 |
| Dora Roberts Ranch Unit O-10-15848 | Continental Resources, Inc. only | Dora Roberts (Ellenburger) | Midland | 28 | 813K | 5.29M | by Jan 1993 – Aug 2026 |
| Long-Bell G-6-215637 | Burk Royalty Co., Ltd. only | Brookeland (Austin Chalk, 8800) | Tyler | 1 | 809K | 3.91M | Aug 2003 – Aug 2026 |
| Whitwell E Unit O-1-17604 | Verdun Oil EF II LLC only | Eagleville (Eagle Ford-1) | La Salle | 5 | 802K | 1.76M | May 2013 – Aug 2026 |
| Millard -B- O-10-57551 | Ring Energy, Inc. only | Penwell (Clear Fork 5100) | Ector | 12 | 802K | 1.76M | Jul 2022 – Aug 2026 |
| Trammell O-14-8704 | Courson Oil & Gas, Inc. only | Pan Petro (Cleveland) | Roberts | 5 | 801K | 3.73M | Jun 2012 – Aug 2026 |
| Roberts-Coble "B" O-11-3568 | Hilcorp Energy Company only | Levelland | Hockley | 12 | 801K | 237K | by Jan 1993 – Aug 2026 |
| H & J Unit 1"D" O-11-67255 | XTO Energy Inc. only | Russell, North (6600) | Gaines | 17 | 799K | 293K | Jul 1994 – Oct 2005 |
| Duval Ranch -59- O-4-1138 | Killam Oil Co., Ltd. only | Govt. Wells, South | Duval | 21 | 799K | 21 | by Jan 1993 – Aug 2026 |
| A Mueller a-Koehler SW D O-2-11810 | Burlington Resources O & G Co LP only | Eagleville (Eagle Ford-2) | De Witt | 1 | 794K | 2.07M | May 2019 – Aug 2026 |
| Kelley State 22 O-10-47877 | Diamondback E&P LLC only | Hoefs T-K (Wolfcamp) | Pecos | 2 | 779K | 654K | Jan 2016 – Aug 2026 |
| Powell "16A" O-10-33684 | OXY USA Inc. only | Blalock Lake,s.(wolfcamp) | Glasscock | 1 | 778K | 556K | Feb 1993 – Oct 2019 |
| Yellowstone 28-4 O-10-53758 | Browning Oil Company, Inc. only | Garden City, S. (Wolfcamp) | Scurry | 1 | 772K | 1.39M | Nov 2019 – Aug 2026 |
| Bellwood Lake (Paluxy B) Unit O-6-10259 | Weathers Exploration, Inc. only | Bellwood Lake (Paluxy B) | Smith | 7 | 770K | 21 | by Jan 1993 – Aug 2026 |
| Powell 26A O-9-19312 | Ovintiv USA Inc. only | Spraberry (Trend Area) | Upton | 2 | 769K | 1.73M | Apr 2016 – Aug 2026 |
| Todd O-9-2020 | O'Ryan Oil and Gas only | Todd, Deep (Ellenburger) | Crockett | 7 | 767K | 310K | by Jan 1993 – Aug 2024 |
| Texas University -Q- O-10-16237 | Maverick Permian LLC only | University Block 13 (Ellen.) | Andrews | 3 | 767K | 448K | by Jan 1993 – Oct 2011 |
| Houston-Wells W47E O-10-53636 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Glasscock | 1 | 766K | 1.41M | Feb 2020 – Aug 2026 |
| Key, Dolly Bell O-7-8514 | Linder, John Operating Co., LLC only | East Texas | Gregg | 15 | 757K | 300K | by Jan 1993 – Aug 2026 |
| Telluride G O-10-60787 | Oxyrock Operating, LLC only | Spraberry (Trend Area) | Howard | 4 | 756K | 1.44M | Oct 2023 – Aug 2026 |
| Gann, L. D. O-11-3796 | Aviator Energy, LLC only | Levelland | Hockley | 26 | 756K | 422K | by Jan 1993 – Aug 2026 |
| Millard -C- O-10-18108 | Ring Energy, Inc. only | Penwell (Clear Fork 5100) | Ector | 12 | 741K | 1.4M | by Jan 1993 – Aug 2026 |
| Alabama-Coushatta G-3-131890 | Eqv Operating LLC only | Double a Wells (Woodbine) | Polk | 1 | 734K | 11.7M | by Jan 1993 – Jun 2018 |
| Powell 34 O-9-15858 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Upton | 16 | 733K | 2.65M | Jan 2006 – Aug 2026 |
| Slydell B O-10-53947 | SM Energy Company only | Spraberry (Trend Area) | Martin | 2 | 730K | 2.73M | Jan 2020 – Aug 2026 |
| Ector Fee Unit II O-10-21673 | Formentera Operations LLC only | Harper (Ellenburger) | Ector | 3 | 728K | 736K | by Jan 1993 – Aug 2026 |
| Seaboard-Wright O-11-3896 | Aviator Energy, LLC only | Levelland | Cochran | 38 | 728K | 667K | by Jan 1993 – Aug 2026 |
| Blauw-Paetz O-3-9024 | Shoco Production LLC only | Stowell (Sullivan LF) | Jefferson | 2 | 726K | 551K | by Jan 1993 – Jul 2026 |
| Carter, W. T. & Bro. "D" G-3-161596 | Eqv Operating LLC only | Double a Wells (Woodbine) | Polk | 1 | 724K | 14.8M | Dec 1996 – Aug 2026 |
| Bizzell-Irvin 15L Unit O-10-56157 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 3 | 723K | 3.13M | Dec 2021 – Aug 2026 |
| State Caldwell 57-T2-35X26 SA G-10-286614 | BPX Operating Company only | Phantom (Wolfcamp) | Reeves | 1 | 723K | 4.72M | Oct 2018 – Aug 2026 |
| McMurtrey O-9-12631 | Hellifino Operating, LLC only | Lonesome Dove II (King Sand) | Concho | 13 | 723K | 235K | by Jan 1993 – Aug 2026 |
| Powell Unit O-1-17434 | EOG Resources, Inc. only | Eagleville (Eagle Ford-1) | La Salle | 2 | 717K | 1.14M | Feb 2014 – Aug 2026 |
| Deguello Unit 54-7-2 G-10-300548 | TRP Operating LLC only | Phantom (Wolfcamp) | Reeves | 1 | 715K | 4.24M | Dec 2019 – Aug 2026 |
| Tyrrell-Combest G-3-258813 | Ballard Exploration Company,inc. only | Gulf Terrace (Yegua EY-2) | Jefferson | 1 | 711K | 5.88M | Jun 2010 – Oct 2022 |
| Martin, Nellie C. O-10-36485 | Unitex Oil & Gas, L.L.C. only | Martin (Consolidated) | Andrews | 33 | 710K | 4.35M | Dec 2000 – Aug 2026 |
| Churchwell 120 O-3-26710 | Wildfire Energy Operating LLC only | Giddings (Eagleford) | Burleson | 2 | 710K | 216K | Sep 2014 – Jul 2026 |
| Masten, F. O. O-11-3692 | Vision Oil and Gas LLC only | Levelland | Cochran | 89 | 706K | 1.03M | by Jan 1993 – Nov 2025 |
| Champion Int'l. C G-3-159465 | Eqv Operating LLC only | Double a Wells (Woodbine) | Polk | 1 | 706K | 13.6M | May 1996 – Aug 2026 |
| Wells, J. T. O-3-23832 | Neches Transport Inc. only | Hillister, E. (Wilcox -a- Sd.) | Tyler | 1 | 705K | 374K | May 2000 – Aug 2026 |
| Whitwell C O-1-20299 | Trinity Operating (Usg), LLC only | Briscoe Ranch (Eagleford) | Frio | 3 | 705K | 2.42M | Jun 2020 – Aug 2026 |
| Neal-Powell Unit O-9-19164 | COG Operating LLC only | Spraberry (Trend Area) | Upton | 2 | 704K | 2.76M | Sep 2015 – Aug 2026 |
| Powell "11F" O-10-36867 | OXY USA Inc. only | Cobra (Wolfcamp) | Glasscock | 1 | 702K | 2.57M | May 2002 – Aug 2019 |