| Utl Bufflehead 2040A G-10-301085 | Continental Resources, Inc. only | Ruppel (Woodford) | Ward | 1 | 537K | 7.1M | Oct 2024 – Apr 2026 |
| Thomas 203-204 Unit G-10-292937 | Permian Resources Operating, LLC only | Phantom (Wolfcamp) | Ward | 1 | 517K | 4.74M | Dec 2021 – Apr 2026 |
| Cason 203-204 Unit G-10-292834 | Permian Resources Operating, LLC only | Phantom (Wolfcamp) | Ward | 1 | 418K | 4.37M | Dec 2021 – Apr 2026 |
| Lucy 203-204 Unit G-10-292816 | Permian Resources Operating, LLC only | Phantom (Wolfcamp) | Ward | 1 | 388K | 3.88M | Dec 2021 – Apr 2026 |
| Lucy 203-204 Unit G-10-293050 | Permian Resources Operating, LLC only | Phantom (Wolfcamp) | Ward | 1 | 368K | 3.78M | Dec 2021 – Apr 2026 |
| Lucy 203-204 Unit G-10-292748 | Permian Resources Operating, LLC only | Phantom (Wolfcamp) | Ward | 1 | 318K | 3.42M | Dec 2021 – Apr 2026 |
| Lucy 203-204 Unit G-10-292689 | Permian Resources Operating, LLC only | Phantom (Wolfcamp) | Ward | 1 | 224K | 3.71M | Dec 2021 – Apr 2026 |
| Big Four Colony a 204 G-1-300045 | Trinity Operating (Usg), LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 99K | 468K | Aug 2022 – Apr 2026 |
| Big Wells Mipa 204 G-1-294965 | Trinity Operating (Usg), LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 78.7K | 288K | Dec 2022 – Apr 2026 |
| Big Wells Mipa 204 G-1-295094 | Trinity Operating (Usg), LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 66.7K | 260K | Dec 2022 – Apr 2026 |
| K & H Fee "2042" G-4-149905 | Killam Oil Co., Ltd. only | B.M.T. (Lobo Cons.) | Webb | 1 | 47.3K | 5.09M | May 1994 – Apr 2026 |
| Hodges '204' G-14-275286 | Mewbourne Oil Company only | Allen-Parker (Marmaton) | Roberts | 1 | 42.5K | 620K | May 2014 – Apr 2026 |
| Hodges '204' G-14-276513 | Mewbourne Oil Company only | Allen-Parker (Marmaton) | Roberts | 1 | 39.6K | 915K | Oct 2014 – Apr 2026 |
| K & H Fee "2042" G-4-107363 | Killam Oil Co., Ltd. only | Villegas (Middle Wilcox 7950) | Webb | 1 | 27.1K | 893K | Jan 1993 – Mar 2000 |
| Isaacs 204 G-14-123569 | Cimarex Energy Co. of Colorado only | Red Deer Creek (Morrow, Upper) | Hemphill | 1 | 18.8K | 1.62M | Jan 1993 – Apr 2009 |
| Briscoe "N" 2046 G-4-163538 | EOG Resources, Inc. only | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 14.3K | 1.36M | Jun 1997 – Apr 2015 |
| Geaslin SW 204 G-9-179544 | BRP Energy, LLC only | Geaslin (Wolfcamp) | Terrell | 1 | 13.9K | 891K | Oct 2000 – Apr 2026 |
| K & H Fee "2042" G-4-166438 | Killam Oil Co., Ltd. only | B.M.T. (Lobo Cons.) | Webb | 1 | 13.1K | 2.13M | Dec 1997 – Apr 2026 |
| K & H Fee "2042" G-4-149325 | Killam Oil Co., Ltd. only | Villegas (Middle Wilcox 7950) | Webb | 1 | 9.35K | 225K | Mar 1994 – Mar 1996 |
| Geaslin NE "204" G-9-203703 | BRP Energy, LLC only | Geaslin (Wolfcamp) | Terrell | 1 | 9.24K | 332K | Apr 2004 – Apr 2026 |
| K & H Fee "2042" G-4-149255 | Killam Oil Co., Ltd. only | B.M.T. (Lobo Cons.) | Webb | 1 | 8.54K | 2.1M | Mar 1994 – Dec 2019 |
| State Tract 204 G-3-139297 | Scana Production Company only | Red Fish Reef, North (F-18, 19) | Chambers | 1 | 8.25K | 439K | Jan 1993 – Oct 1993 |
| K & H Fee "2042" G-4-169531 | Killam Oil Co., Ltd. only | B.M.T. (Lobo Cons.) | Webb | 1 | 6.6K | 1.13M | May 1998 – Nov 2020 |
| D.C.R.C. - Sec. 204 G-4-54933 | Remora Operating, LLC only | Petrox (Wilcox 7100) | Duval | 1 | 4.05K | 530K | Mar 1996 – Apr 2026 |
| RFR Tract 204 G-3-8106 | Masters Oil & Gas, LLC only | Red Fish Reef, North (Frio 15) | Chambers | 1 | 3.85K | 721K | Jan 1993 – Oct 2007 |
| Jernigan, R. A. G-6-162871 | Ursus Oil and Gas only | Carthage (6204 Sand) | Panola | 1 | 3.48K | 487K | Oct 1996 – Jan 2015 |
| State Tract 204 G-3-148137 | Shoreham Oil & Gas Company, Inc. only | Red Fish Reef, North (Frio 17) | Chambers | 1 | 3.46K | 201K | Nov 1993 – Jul 2003 |
| K & H Fee "2042" G-4-162095 | Killam Oil Co., Ltd. only | B.M.T. (Lobo Cons.) | Webb | 1 | 3.3K | 837K | Jan 1997 – Apr 2026 |
| K&H Fee 2042 G-4-243742 | Killam Oil Co., Ltd. only | B.M.T. (Lobo Cons.) | Webb | 1 | 2.82K | 492K | Jul 2008 – Apr 2026 |
| Geaslin NE 204 G-9-183984 | BRP Energy, LLC only | Geaslin (Wolfcamp) | Terrell | 1 | 2.72K | 1.34M | Jul 2001 – Apr 2026 |
| D. C. R. C. - Sec. 204 G-4-55542 | Chesapeake Operating, Inc. only | Petrox (Wilcox 7100) | Duval | 1 | 2.62K | 343K | Jan 1993 – Nov 2005 |
| Thomson-Barrow Corp. G-2-165323 | C & E Operating, Inc. only | Burkes Ridge (2040) | Bee | 1 | 2.53K | 609K | Sep 1997 – Jan 2013 |
| Geaslin SW 204 G-9-190056 | BRP Energy, LLC only | Geaslin (Wolfcamp) | Terrell | 1 | 2.21K | 841K | Jul 2002 – Apr 2026 |
| Geaslin SW "204" G-9-199782 | BRP Energy, LLC only | Geaslin (Wolfcamp) | Terrell | 1 | 2.09K | 591K | Sep 2003 – Apr 2026 |
| K&H Fee "2042" G-4-130100 | Killam Oil Co., Ltd. only | Villegas (Middle Wilcox 7950) | Webb | 1 | 1.69K | 546K | Jan 1993 – Mar 2000 |
| State Tract 204 G-3-169867 | Masters Oil & Gas, LLC only | Red Fish Reef, North (Frio 15) | Chambers | 1 | 1.05K | 109K | Jul 1998 – Sep 2005 |
| Geaslin SE 204 G-9-185651 | BRP Energy, LLC only | Geaslin (Wolfcamp) | Terrell | 1 | 764 | 203K | Aug 2001 – Apr 2026 |
| Geaslin NE 204 G-9-192658 | BRP Energy, LLC only | Geaslin (Wolfcamp) | Terrell | 1 | 297 | 780K | Nov 2002 – Apr 2026 |
| K & H Fee '2042' G-4-290905 | Killam Oil Co., Ltd. only | Villegas (Middle Wilcox 7950) | Webb | 1 | 245 | 54.5K | Dec 2020 – Apr 2026 |
| Thomson-Barrow Corp. G-2-161804 | C & E Operating, Inc. only | Burkes Ridge (2040) | Bee | 1 | 149 | 205K | Jan 1997 – Oct 2012 |
| RFR Tract 204 G-3-118706 | Vintage Petroleum, Inc. only | Red Fish Reef (Frio 1) | Chambers | 1 | 133 | 347K | Jan 1993 – May 1994 |
| Geaslin NE "204" G-9-208287 | BRP Energy, LLC only | Geaslin (Wolfcamp) | Terrell | 1 | 108 | 812K | Nov 2004 – Apr 2026 |
| Geaslin SE 204 G-9-186961 | BRP Energy, LLC only | Geaslin (Wolfcamp) | Terrell | 1 | 78 | 684K | Dec 2001 – Apr 2026 |
| Geaslin SE "204" G-9-215737 | BRP Energy, LLC only | Geaslin (Wolfcamp) | Terrell | 1 | 52 | 286K | Dec 2005 – Apr 2026 |
| Thomson-Barrow Corp. G-2-166383 | C & E Operating, Inc. only | Burkes Ridge (2040) | Bee | 1 | 25 | 15.1K | Dec 1997 – Jan 1999 |
| Geaslin SW "204" G-9-199780 | BRP Energy, LLC only | Geaslin (Wolfcamp) | Terrell | 1 | 12 | 238K | Oct 2003 – Apr 2026 |
| Tusa, T. S. G-2-156850 | Shana Petroleum Company only | Provident City (Miocene 2040) | Lavaca | 1 | 3 | 44.1K | Dec 1995 – Oct 1996 |
| Williams -2046- G-8-73975 | Jones Company, Ltd. only | Williams (Caddo) | Callahan | 1 | 0 | 0 | — |
| State Tract 204 G-3-169196 | Vintage Petroleum, Inc. only | Red Fish Reef, North (F-18, 19) | Chambers | 1 | 0 | 0 | — |
| Tomball Gas Unit #2 G-3-186954 | Americo Energy Resources, LLC only | Tomball (Miocene 2040) | Harris | 1 | 0 | 91.9K | Nov 2001 – Jun 2012 |