Pendak 1 Cowan
API 4004105003 · Dewey County, South Dakota · Lantry field
Plugged and AbandonedDry Hole-Oil show
API
4004105003
Operator
Pendak Ltd.
County
Dewey
Field
Lantry
Location
SESE Sec 21 Twp 013N Rng 22E
Permit
374
Formation tops
South Dakota records 12 formations for this well, shallowest first.
| Formation | Top (ft) | Age |
|---|---|---|
| Niobrara Formation | 1,626 | Cretaceous |
| Greenhorn Limestone | 2,168 | Cretaceous |
| Fall River Sandstone | 2,676 | Cretaceous |
| Opeche Shale | 3,374 | Permian |
| Minnelusa Formation | 3,444 | Permian/Pennsylvanian |
| Kibbey Formation | 3,744 | Mississippian |
| Mission Canyon Limestone | 4,020 | Mississippian |
| Three Forks Shale | 4,695 | Devonian |
| Duperow Formation | 4,770 | Devonian |
| Interlake Dolomite | 4,926 | Silurian |
| Red River Formation | 5,014 | Ordovician |
| Winnipeg Formation | 5,572 | 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
1964-11-02
Measured depth
5,700 ft
True vertical depth
5,700 ft
Location
45.068915, -101.427513
45.06891, -101.42751 · 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.