| Hooker Trust -B- O-8-6418 | JTC Royalties LLC only | Shackelford County Regular | Shackelford | 9 | 127K | 0 | Jun 2001 – Aug 2026 |
| Hooker Trust O-8-3466 | Rattlesnake Mountain Oil LLC only | Shackelford County Regular | Shackelford | 16 | 124K | 22 | by Jan 1993 – Aug 2026 |
| Hooker Trust- -Key Lee- O-8-3365 | Cobra Oil & Gas Corporation only | Shackelford County Regular | Shackelford | 2 | 82.3K | 21 | by Jan 1993 – Aug 2026 |
| Walker-Buckler Trust /TR 15/ O-8-8715 | Keating Energy, Inc. only | Gem, Northeast (Caddo) | Shackelford | 2 | 51.7K | 651K | by Jan 1993 – Aug 2026 |
| Brittingham Trust "D" O-8-14601 | Spring Tree Management LC only | Shackelford County Regular | Shackelford | 8 | 29K | 20 | by Jan 1993 – May 2009 |
| Walker-Bucker Trust "B" O-8-27004 | Snyder Drilling Corp. only | Shackelford County Regular | Shackelford | 6 | 24.8K | 53 | Aug 1993 – Aug 2026 |
| Walker Buckler Trust Tr. 20 O-8-18404 | Keating Energy, Inc. only | Gem, Northeast (Caddo) | Shackelford | 1 | 21.6K | 407K | by Jan 1993 – Aug 2026 |
| Trust Clifton Unit O-8-27663 | Van Operating, Ltd. only | Clifton (Miss.) | Shackelford | 1 | 20.8K | 45.5K | Jun 1995 – Jun 2001 |
| Trust "139" O-8-27480 | Van Operating, Ltd. only | Hillview (Miss) | Shackelford | 1 | 18.3K | 25K | Feb 1995 – Sep 1999 |
| Walker-Buckler Trust 2B O-8-27808 | Beehive Operating, LLC only | Bs&t (Miss.) | Shackelford | 1 | 18.3K | 20.3K | Jan 1996 – Nov 2012 |
| Trust "139" Lease O-8-28691 | Van Operating, Ltd. only | Hillview (Caddo) | Shackelford | 1 | 17.4K | 30.7K | Oct 1999 – Dec 2002 |
| Buckler, Walker Trust O-8-6659 | Sojourner Drilling Corporation only | V. G. (Gardner) | Shackelford | 1 | 13.3K | 68.3K | by Jan 1993 – Jun 2018 |
| Walker-Buckler Trust 380-381 O-8-25748 | Hilltex Operating Company, LLC only | Shackelford County Regular | Shackelford | 17 | 12.9K | 63 | by Jan 1993 – Dec 2012 |
| Walker-Buckler Trust (TR.15) O-8-11934 | Keating Energy, Inc. only | Shackelford Ne(miss) | Shackelford | 6 | 12.5K | 383K | by Jan 1993 – Aug 2026 |
| Brittingham Trust "C" O-8-14444 | Spring Tree Management LC only | Shackelford County Regular | Shackelford | 5 | 11.9K | 20 | by Jan 1993 – May 2009 |
| Brittingham Trust "B" O-8-14284 | Spring Tree Management LC only | Shackelford County Regular | Shackelford | 2 | 10.6K | 19 | by Jan 1993 – May 2009 |
| Hooker Trust O-8-8378 | Herencia Operating LLC only | Shackelford County Regular | Shackelford | 35 | 9.21K | 10 | by Jan 1993 – Jun 1998 |
| Matthews Trust "13" O-8-28470 | Clear Fork, Incorporated only | E 115 (Miss. Cons.) | Shackelford | 1 | 8.03K | 341K | Mar 1998 – Feb 2011 |
| Walker-Buckler Trust (TR.15) G-8-179292 | Keating Energy, Inc. only | Gem, Northeast (Caddo Lime) | Shackelford | 1 | 5.06K | 205K | Sep 2000 – Aug 2026 |
| Coates, F. G., Trustee -B- O-8-3463 | Spring Tree Management LC only | Shackelford County Regular | Shackelford | 3 | 4.11K | 19 | by Jan 1993 – May 2009 |
| Trust "H. T. & B" Unit O-8-28460 | Van Operating, Ltd. only | Ranch View (Caddo) | Shackelford | 1 | 3.66K | 13.1K | Apr 1998 – Aug 1999 |
| Snyder Mineral Trust O-8-25418 | Delray Oil, Inc. only | Shackelford County Regular | Shackelford | 8 | 2.61K | 244 | by Jan 1993 – Jun 1994 |
| Walker-Buckler Trust/TR 40A/ O-8-26294 | Beehive Operating, LLC only | Fort Griffin, E. (Caddo) | Shackelford | 2 | 2.59K | 6.18K | Sep 1993 – Nov 2012 |
| Coates, F. G. Trustee -B- O-8-3333 | Chiodo Corp. only | Shackelford County Regular | Shackelford | 13 | 2.32K | 22 | by Jan 1993 – Oct 1994 |
| Walker-Buckler Trust -A- O-8-9027 | Grothe, M.L. Est. only | Shackelford County Regular | Shackelford | 9 | 2.21K | 22 | by Jan 1993 – Oct 2014 |
| Coates, F. G. Trustee -C- O-8-6353 | Spring Tree Management LC only | Shackelford County Regular | Shackelford | 3 | 2.12K | 20 | by Jan 1993 – Oct 2000 |
| Matthews Trust "14" G-8-167313 | Kroh Operating LLC only | L. G. Cook (Miss.) | Shackelford | 1 | 1.65K | 354K | Mar 1998 – Jun 2025 |
| Walker-Buckler Trust/TR 40A/Roco O-8-27382 | Beehive Operating, LLC only | Fort Griffin, E. (Strawn) | Shackelford | 1 | 1.31K | 10.2K | Nov 1994 – Oct 1999 |
| Trust "Bs&f" Unit O-8-27481 | Van Operating, Ltd. only | Gatlin (Miss) | Shackelford | 1 | 1.23K | 22.7K | Nov 1994 – Jul 1996 |
| Walker-Buckler Trust/TR 40A/SWD O-8-9385 | Beehive Operating, LLC only | Fort Griffin, E. (Miss) | Shackelford | 3 | 1.14K | 1.55K | by Jan 1993 – Aug 1993 |
| Trust Clifton Unit O-8-29067 | Van Operating, Ltd. only | Hillview (Caddo) | Shackelford | 1 | 821 | 1.56K | Jul 2001 – Apr 2002 |
| Trust "H. T. & B." Unit O-8-27520 | Van Operating, Ltd. only | Fort Griffin, NE. (Miss) | Shackelford | 1 | 764 | 43.8K | Feb 1995 – Sep 1995 |
| Walker-Buckler Trust Tr. 21 G-8-55910 | Keating Energy, Inc. only | Shackelford Ne(miss) | Shackelford | 1 | 623 | 187K | by Jan 1993 – Nov 2025 |
| Trust "558" G-8-152310 | Van Operating, Ltd. only | Hillview (Caddo) | Shackelford | 1 | 587 | 56.7K | Nov 1994 – Jan 1998 |
| Snyder Mineral Trust "26" G-8-50113 | Snyder Drilling Corp. only | C & P (Lake) | Shackelford | 1 | 521 | 517K | by Jan 1993 – Dec 2024 |
| Hooker Trusts -D- O-8-9810 | Jones, Jansen M. only | Shackelford County Regular | Shackelford | 7 | 505 | 21 | by Jan 1993 – Nov 2004 |
| Trust "H. T. & B." Unit G-8-156260 | Van Operating, Ltd. only | Alongside (Miss.) | Shackelford | 1 | 236 | 185K | Oct 1995 – Mar 1998 |
| Walker-Buckler Trust -379- O-8-10001 | Tabor Creek Oil Company only | Shackelford County Regular | Shackelford | 2 | 125 | 48 | by Jan 1993 – Sep 2000 |
| Hooker Trust -C- O-8-3412 | JTC Royalties LLC only | Shackelford County Regular | Shackelford | 1 | 31 | 0 | Jul 2000 – Jul 2002 |
| Trust "H. T. & B." Unit G-8-175389 | Van Operating, Ltd. only | Antelope Hills (Caddo, Upper) | Shackelford | 1 | 15 | 71.4K | Sep 1999 – Jan 2001 |
| Trust "BS & F" Unit G-8-159748 | Supreme Energy Company, Inc. only | Gatlin (Caddo) | Shackelford | 1 | 0 | 34.3K | Aug 1996 – Mar 2010 |
| Walker-Buckler Trust /Tr. 21/ G-8-50587 | Keating Energy, Inc. only | Shackelford Ne(miss) | Shackelford | 1 | 0 | 0 | — |
| Walker-Buckler Trust (Tract 1) G-8-107607 | Richland Energy, Inc. only | Shackelford County Regular (Gas) | Shackelford | 1 | 0 | 0 | — |
| Matthews Trust "13" G-8-167321 | Clear Fork, Incorporated only | L. G. Cook (Miss.) | Shackelford | 1 | 0 | 0 | — |
| Trust "139" G-8-174642 | Van Operating, Ltd. only | Hillview (Caddo) | Shackelford | 1 | 0 | 5.1K | Oct 1999 – Oct 1999 |
| Trust "139" Lease G-8-194423 | Van Operating, Ltd. only | Hillview (Caddo) | Shackelford | 1 | 0 | 4.19K | Jan 2003 – Jun 2003 |
| Hooker Trust -B- O-8-3362 | Schkade, Louis only | Shackelford County Regular | Shackelford | 1 | 0 | 0 | — |
| Walker-Buckler Trust /Tr. 42/ O-8-9129 | E. & H. Oil Company only | Shackelford County Regular | Shackelford | 3 | 0 | 0 | — |
| Walker-Buckler Trust-367 O-8-9870 | Leclair Operating Co., Inc. only | Shackelford County Regular | Shackelford | 13 | 0 | 0 | — |
| Walker-Buckler Trust -363- O-8-10176 | Leclair Operating Co., Inc. only | Shackelford County Regular | Shackelford | 1 | 0 | 0 | — |