Investors 2 Cook
API 4004120012 · Dewey County, South Dakota · Lantry field
Plugged and AbandonedDry Hole-Oil show
API
4004120012
Operator
Timberline Oil and Gas Corp.
County
Dewey
Field
Lantry
Location
Permit
610
Formation tops
South Dakota records 17 formations for this well, shallowest first.
| Formation | Top (ft) | Age |
|---|---|---|
| Niobrara Formation | 1,622 | Cretaceous |
| Greenhorn Limestone | 2,185 | Cretaceous |
| Newcastle Sandstone | 2,700 | Cretaceous |
| Skull Creek Shale | 2,780 | Cretaceous |
| Fall River Sandstone | 2,945 | Cretaceous |
| Sundance Formation | 3,082 | Triassic |
| Piper Formation | 3,200 | Triassic |
| 3rd Leo Sandstone, Minnelusa Formation | 3,688 | Pennsylvanian |
| Bell Sandstone, Minnelusa Formation | 3,980 | Pennsylvanian |
| Charles Formation | 4,048 | Mississippian |
| Mission Canyon Limestone | 4,310 | Mississippian |
| Lodgepole Limestone | 4,530 | Mississippian |
| Three Forks Shale | 4,700 | Devonian |
| Nisku Formation | 4,777 | Devonian |
| Duperow Formation | 4,828 | Devonian |
| Stony Mountain Formation | 4,958 | Ordovician |
| Red River Formation | 5,004 | Ordovician |
A dash is a formation South Dakota records for this well without a depth.
Completion
South Dakota files 1 completion report for this well.
Vertical Well
Plugged and AbandonedDry Hole-Oil showSpudded
1970-12-18
Completed
1971-02-28
Measured depth
5,069 ft
True vertical depth
5,069 ft
Location
45.040028, -101.458163
45.04003, -101.45816 · Surface location as filed with South Dakota⌘ or Ctrl + scroll to zoom
Every well in Dewey County, South Dakota
South Dakota state record, from SD_wells_SDOILexport_Export__wells_Table_4_Web.parquet. Corpus built 2026-09-11.