| Cook 62/83 O-8-26774 | Cook Ranch | Shackelford | 46 | 529K | 21 | Jan 1993 – Jul 2026 |
| Walker Buckler Unit O-8-27089 | Rock House (Miss.) | Shackelford | 2 | 199K | 306K | Jan 1994 – Jul 2026 |
| Cook, W. I. O-8-3564 | Cook Ranch | Shackelford | 58 | 133K | 48.2K | Jan 1993 – Jul 2026 |
| Mackey, A. W. O-8-9190 | Schkade (Miss.) | Shackelford | 3 | 131K | 708K | Jan 1993 – Jul 2026 |
| Cook Ranch 88 O-8-30364 | Cook Ranch | Shackelford | 33 | 114K | 44.7K | Jul 2009 – Jul 2026 |
| Cook Ranch 112 O-8-26590 | Cook Ranch (Miss.) | Shackelford | 5 | 106K | 690K | Jan 1993 – Jul 2026 |
| Palm, F. N. O-8-10380 | Palm (Miss.) | Shackelford | 5 | 67.8K | 425K | Jan 1993 – Jul 2026 |
| Cook Strawn 85S/86S Pooled Unit O-8-30549 | Cook Ranch (Strawn Sand) | Shackelford | 12 | 66.5K | 67.1K | May 2010 – Jul 2026 |
| Cook -a-, Section 81 O-8-9183 | Cook Ranch | Shackelford | 5 | 55.6K | 21 | Jan 1993 – Jul 2026 |
| Cook Ranch "60S" O-8-30671 | Cook Ranch (Strawn Sand) | Shackelford | 8 | 52.6K | 47.7K | Dec 2010 – Jul 2026 |
| Stasney's Cook Ranch "57" O-8-29973 | Shackelford County Regular | Shackelford | 19 | 44.9K | 0 | Aug 2007 – Jul 2026 |
| Cook Ranch 85WS O-8-31366 | Cook Ranch | Shackelford | 14 | 41K | 0 | Dec 2013 – Jul 2026 |
| Cook -B- Sec. 113 O-8-3571 | Cook Ranch | — | 2 | 34.8K | 24.2K | Jan 1993 – Jul 2026 |
| Cook, W. I. Estates Sec. /139A/ O-8-3573 | Cook Ranch | Shackelford | 24 | 31.5K | 21 | Jan 1993 – Jul 2026 |
| Cook Ranch 60SH O-8-30887 | Cook Ranch | Shackelford | 12 | 30.9K | 0 | Nov 2011 – Jul 2026 |
| Stasney Ranch 62/63 O-8-32666 | Cook Ranch | Shackelford | 20 | 27.9K | 0 | Dec 2022 – Jul 2026 |
| Cook Ranch "61" O-8-30129 | Cook Ranch | Shackelford | 9 | 21.3K | 865 | Jun 2008 – Jul 2026 |
| Stasney Ranch 62 O-8-32169 | Cook Ranch | Shackelford | 15 | 21.2K | 0 | Jul 2017 – Jul 2026 |
| Cook Ranch 113 O-8-30273 | Cook Ranch | Shackelford | 7 | 20.3K | 2.42K | Jan 2009 – Jul 2026 |
| Cook 85-60 Pooled Unit O-8-30140 | Shackelford County Regular | Shackelford | 7 | 19.1K | 7 | Jun 2008 – Jul 2026 |
| Cook 145 O-8-29336 | Cook Ranch (Miss.) | Shackelford | 1 | 18K | 37.7K | Dec 2003 – Jul 2026 |
| Cook 116S O-8-30594 | Cook Ranch (Strawn Sand) | Shackelford | 1 | 17.3K | 0 | Oct 2010 – Jul 2026 |
| Cook Ranch "60S" O-8-29834 | Cook Ranch | Shackelford | 15 | 15.5K | 3.88K | Oct 2006 – Jul 2026 |
| Cook 88S O-8-30577 | Cook Ranch (Strawn Sand) | Shackelford | 3 | 10.5K | 7.06K | Sep 2010 – Jul 2026 |
| Cook Ranch O-8-27240 | Natalie Nicole (Miss.) | Shackelford | 1 | 9.5K | 38K | Jul 1994 – Jul 2026 |
| Cook Ranch 114 O-8-30150 | Cook Ranch | Shackelford | 6 | 8.57K | 0 | Aug 2008 – Jul 2026 |
| Cook Ranch 58 O-8-31490 | Cook Ranch | Shackelford | 5 | 8.16K | 0 | Sep 2013 – Jul 2026 |
| Stasney 61 O-8-32767 | Cook Ranch | Shackelford | 6 | 7.91K | 0 | Jul 2024 – Jul 2026 |
| Cook Ranch 85 O-8-30240 | Cook Ranch | Shackelford | 3 | 6.29K | 12K | Nov 2008 – Jul 2026 |
| Knox "A" O-8-17629 | Shackelford County Regular | Shackelford | 3 | 5.48K | 20 | Jan 1993 – Jul 2026 |
| Cook Ranch 117 O-8-32343 | Cook Ranch | Shackelford | 1 | 4.17K | 0 | Sep 2018 – Jul 2026 |
| Cook -a- Sec. 118 O-8-3569 | Cook Ranch | Shackelford | 18 | 2.61K | 13 | Jan 1993 – Jul 2026 |
| Cook Ranch 89 O-8-30881 | Cook Ranch | Shackelford | 4 | 2.59K | 0 | Mar 2011 – Jul 2026 |
| Cook Ranch 63 O-8-32114 | Cook Ranch | Shackelford | 3 | 2.52K | 0 | Apr 2017 – Jul 2026 |
| Cook Ranch 85S O-8-31662 | Cook Ranch | Shackelford | 2 | 2.27K | 0 | Oct 2014 – Jul 2026 |
| Cook Ranch 111A O-8-32441 | Cook Ranch | Shackelford | 3 | 2.01K | 0 | Jun 2020 – Jul 2026 |
| Palm, F. N. O-8-11226 | Shackelford County Regular | Shackelford | 2 | 1.96K | 19 | Jan 1993 – Jul 2026 |
| Morris, J. P. "E" O-8-3348 | Shackelford County Regular | Shackelford | 3 | 907 | 21 | Jan 1993 – Jul 2026 |
| Cook Ranch 54A O-8-32194 | Cook Ranch | Shackelford | 3 | 805 | 0 | Aug 2017 – Jul 2026 |
| Palm, F. N. G-8-293086 | Palm (Miss.) | Shackelford | 1 | 0 | 201K | Aug 2022 – Jul 2026 |
| Cook Ranch G-8-178615 | Shackelford County Regular | Shackelford | 1 | 0 | 31.3K | Aug 2000 – Jul 2026 |
| Cook Ranch G-8-181435 | Shackelford County Regular (Gas) | Shackelford | 1 | 0 | 26.6K | Oct 2000 – Jul 2026 |
| Palm, F. N. G-8-198046 | Palm (Miss.) | — | 1 | 0 | 637K | Sep 2003 – Jul 2026 |
| Cook -a- Sec. 112 O-8-8246 | Cook Ranch | — | 1 | 0 | 0 | Jan 1993 – Jul 2026 |
| Cook Ranch "84H" O-8-29463 | Shackelford County Regular | Shackelford | 1 | 0 | 0 | Aug 2004 – Jul 2026 |
| Cook 117B O-8-30717 | Cook Ranch | Shackelford | 1 | 0 | 0 | Apr 2011 – Jul 2026 |
| Knox 167 O-8-31547 | Cook Ranch | Shackelford | 1 | 0 | 0 | Jul 2014 – Jul 2026 |
| Cook Ranch 170 O-8-31924 | Shackelford County Regular | Shackelford | 1 | 0 | 0 | Jun 2015 – Jul 2026 |
| Cook 88S O-8-32345 | Cook Ranch | Shackelford | 2 | 0 | 0 | Aug 2018 – Jul 2026 |
| Stasney Ranch 140 O-8-32416 | Cook Ranch | Shackelford | 1 | 0 | 0 | Aug 2019 – Jul 2026 |