| Glasscock -N- Fee O-10-29129 | XTO Energy Inc. only | Blalock Lake, SE (Wolfcamp) | Glasscock | 11 | 1.68M | 3.22M | Jan 1993 – Apr 2020 |
| Boone-Coffee 80 O-10-46573 | Civitas Permian Operating, LLC only | Spraberry (Trend Area) | Glasscock | 5 | 1.11M | 4.67M | Oct 2014 – Jul 2026 |
| Boone-Coffee 60 O-10-48211 | Civitas Permian Operating, LLC only | Spraberry (Trend Area) | Glasscock | 4 | 972K | 3.52M | Jan 2016 – Jul 2026 |
| 'L' Fee-Calverley Unit O-10-33979 | XTO Energy Inc. only | Blalock Lake, SE (Wolfcamp) | Glasscock | 1 | 753K | 1.04M | Oct 1993 – Nov 2020 |
| Glasscock -L- Fee O-10-32273 | XTO Energy Inc. only | Blalock Lake, SE (Wolfcamp) | Glasscock | 10 | 711K | 1.77M | Jan 1993 – Oct 2020 |
| Boone-Coffee 70 O-10-48214 | Civitas Permian Operating, LLC only | Spraberry (Trend Area) | Glasscock | 2 | 535K | 1.9M | Oct 2016 – Jul 2026 |
| Glass TXL Fee O-10-45190 | Burk Royalty Co., Ltd. only | Spraberry (Trend Area) | Glasscock | 12 | 530K | 8.38M | Feb 2014 – Jul 2026 |
| Block 33-3 TXL Fee O-10-45800 | Burk Royalty Co., Ltd. only | Spraberry (Trend Area) | Glasscock | 7 | 335K | 1.05M | Aug 2014 – Jul 2026 |
| Glasscock -U- Fee O-10-25434 | XTO Energy Inc. only | Roberta (Queen) | Glasscock | 8 | 258K | 38 | Jan 1993 – Jul 2026 |
| Glasscock 'M' Fee O-10-34812 | Chevron U. S. A. Inc. only | La Vista (Fusselman) | Glasscock | 1 | 169K | 1.08M | Jan 1996 – Mar 2004 |
| 'M' Fee-Powell Unit O-10-36285 | DE3 Operating LLC only | Blalock Lake, SE (Wolfcamp) | Glasscock | 1 | 164K | 614K | Apr 2000 – May 2020 |
| Sterling "W" Fee O-10-37012 | Burk Royalty Co., Ltd. only | Conger, SW (Wolfcamp) | Glasscock | 4 | 114K | 445K | Nov 2002 – Jul 2026 |
| Glasscock 'M' Fee O-10-35083 | XTO Energy Inc. only | Powell (Penn) | Glasscock | 2 | 109K | 2.5M | Sep 1996 – Jul 2026 |
| Glasscock 'V' Fee O-10-34591 | Burk Royalty Co., Ltd. only | Conger (Leonard) | Glasscock | 2 | 100K | 111K | Jul 1995 – Jul 2026 |
| Glassock "F" Fee O-10-24759 | Winn Operating, LLC only | Deadwood (Fusselman) | Glasscock | 1 | 89.7K | 41.6K | Jan 1993 – Jul 2026 |
| Glasscock Fee O-10-9348 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Glasscock | 2 | 86.6K | 161K | Jan 1993 – Jul 2016 |
| Glasscock -N- Fee O-10-40723 | XTO Energy Inc. only | Spraberry (Trend Area) | Glasscock | 10 | 85.9K | 67.4K | Nov 2010 – Jul 2026 |
| Glasscock 'AJ' Fee O-10-35150 | Fagadau Energy Corporation only | Barbee (Fusselman) | Glasscock | 1 | 64.1K | 127K | Nov 1996 – Oct 2001 |
| Glasscock 'W' Fee O-10-33645 | Chevron U. S. A. Inc. only | Conger, SW (Penn) | Glasscock | 14 | 45.4K | 1.02M | Jan 1993 – Aug 2006 |
| Texaco Fee "A" O-10-34279 | Diamondback E&P LLC only | St. Lawrence S. (Strawn) | Glasscock | 1 | 40.4K | 872K | Sep 1994 – Sep 2022 |
| Glasscock 'AB' Fee O-10-39269 | Burk Royalty Co., Ltd. only | Conger, SW (Wolfcamp) | Sterling | 5 | 40.2K | 268K | Aug 2008 – Jul 2026 |
| Glasscock 'V' Fee O-10-33562 | Texaco E & P Inc. only | Conger (Penn) | Glasscock | 15 | 35.9K | 912K | Jan 1993 – Oct 1995 |
| L Fee Calverley Unit O-10-54440 | XTO Energy Inc. only | Spraberry (Trend Area) | Glasscock | 1 | 34.3K | 71.7K | Dec 2019 – Jul 2026 |
| Glasscock L Fee O-10-54475 | XTO Energy Inc. only | Spraberry (Trend Area) | Glasscock | 7 | 33.4K | 21.3K | Dec 2019 – Jul 2026 |
| Glasscock -S- Fee O-10-32444 | Texaco E & P Inc. only | Conger, SW (Penn) | Glasscock | 14 | 31.6K | 1.03M | Jan 1993 – Oct 1995 |
| Glasscock "S" Fee O-10-36788 | Chevron U. S. A. Inc. only | Block 32 (Wolfcamp) | Glasscock | 2 | 29.7K | 212K | Aug 2001 – Oct 2006 |
| Glasscock Fee O-10-38949 | Burk Royalty Co., Ltd. only | Conger, SW (Wolfcamp) | Glasscock | 4 | 29.5K | 1.13M | Apr 2008 – Jul 2026 |
| Glasscock-B-Fee O-10-25263 | Ellison Lease Operating only | Clyde Reynolds (Wolfcamp) | Glasscock | 1 | 27.4K | 373 | Jan 1993 – Jul 2017 |
| Glasscock -X- Fee O-10-30767 | XTO Energy Inc. only | Saint Lawrence (Strawn) | Glasscock | 4 | 25.7K | 1.71M | Jan 1993 – May 2025 |
| Glasscock 'AB' Fee O-10-33624 | Chevron U. S. A. Inc. only | Conger, SW (Penn) | Sterling | 5 | 24.6K | 681K | Jan 1993 – Dec 2006 |
| Glasscock "y" Fee O-10-31498 | Endeavor Energy Resources L.P. only | Spraberry (Trend Area) | Glasscock | 1 | 23.8K | 97.7K | Jan 1993 – Feb 2003 |
| Glasscock "P" Fee O-10-36224 | Chevron U. S. A. Inc. only | La Vista (Fusselman) | Glasscock | 1 | 19.8K | 111K | Feb 2000 – Sep 2003 |
| Glasscock W Fee O-10-37982 | Burk Royalty Co., Ltd. only | Conger, SW (Wolfcamp) | Glasscock | 2 | 19.5K | 39.1K | Oct 2006 – Dec 2022 |
| Glasscock "P" Fee O-10-36327 | XTO Energy Inc. only | Powell (Penn) | Glasscock | 2 | 15.2K | 442K | Jun 2000 – Jul 2026 |
| Glasscock 'M' Fee O-10-34416 | XTO Energy Inc. only | Blalock Lake, SE (Wolfcamp) | Glasscock | 1 | 13.6K | 60.8K | Feb 1995 – Nov 2019 |
| Glasscock -K- Fee O-10-27706 | H & O Operating Co. Inc. only | Powell (8300) | Glasscock | 4 | 8.53K | 63K | Jan 1993 – Mar 2000 |
| Sterling "W" Fee O-10-57970 | Burk Royalty Co., Ltd. only | Spraberry (Trend Area) | Glasscock | 4 | 5.49K | 83.8K | Feb 2020 – Jul 2026 |
| Glasscock -AA- Fee O-10-32580 | Texaco E & P Inc. only | Blalock Lake, SE (Wolfcamp) | Glasscock | 2 | 5.47K | 23.9K | Jan 1993 – Jan 1997 |
| Sterling "W" Fee O-10-37646 | Burk Royalty Co., Ltd. only | Barbee, NE (Wichita-Albany) | Glasscock | 1 | 4.41K | 8.59K | May 2005 – Jul 2026 |
| Glasscock-B-Fee O-10-48154 | Ellison Lease Operating only | Clyde-Reynolds (Wolfcamp Cons.) | Glasscock | 1 | 4.36K | 0 | Jan 2015 – Jul 2026 |
| 'M' Fee-Powell Unit O-10-53036 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Glasscock | 1 | 3.89K | 12K | Dec 2019 – Jul 2026 |
| Glasscock 'AB' Fee O-10-57993 | Burk Royalty Co., Ltd. only | Spraberry (Trend Area) | Sterling | 5 | 3.36K | 78.8K | Nov 2020 – Jul 2026 |
| Glasscock -K- Fee Unit O-10-33069 | H & O Operating Co. Inc. only | Powell (8300) | Glasscock | 1 | 2.57K | 21.3K | Jan 1993 – Mar 2000 |
| Sterling 'W' Fee O-10-33987 | Texaco E & P Inc. only | Conger, SW (Penn) | Glasscock | 3 | 2.38K | 62.9K | Oct 1993 – Aug 1994 |
| Glasscock Fee O-10-57989 | Burk Royalty Co., Ltd. only | Spraberry (Trend Area) | Glasscock | 4 | 1.52K | 203K | Nov 2020 – Jul 2026 |
| Glasscock V Fee O-10-37893 | Chevron U. S. A. Inc. only | Conger, SW (Wolfcamp) | Glasscock | 1 | 1.39K | 5.86K | Nov 2006 – Jun 2014 |
| Glasscock "AJ" Fee O-10-36714 | Tmbr/Sharp Drilling, Inc. only | Phase III (Wichita Albany) | Glasscock | 1 | 850 | 552 | Aug 2001 – Dec 2002 |
| Block 33-3 TXL Fee O-9-18901 | Chevron U. S. A. Inc. only | Roble Grande (Strawn\woodford) | Glasscock | 1 | 819 | 1.72K | Feb 2015 – Oct 2015 |
| Glasscock N Fee O-10-41536 | XTO Energy Inc. only | Hill Ranch (Miss) | Glasscock | 1 | 412 | 2.9K | Sep 2011 – Oct 2013 |
| Glasscock S Fee O-10-38004 | Chevron U. S. A. Inc. only | Conger, SW (Wolfcamp) | Glasscock | 1 | 294 | 9 | Oct 2006 – Jun 2014 |