Pure 1 Ashmore
API 4003305031 · Custer County, South Dakota · Wildcat field
Plugged and AbandonedDry Hole
API
4003305031
Operator
Pure Oil Co.
County
Custer
Field
Wildcat
Location
NENE Sec 05 Twp 006S Rng 08E
Permit
158
Formation tops
South Dakota records 7 formations for this well, shallowest first.
| Formation | Top (ft) | Age |
|---|---|---|
| Niobrara Formation | 477 | Cretaceous |
| Carlile Shale | 727 | Cretaceous |
| Greenhorn Limestone | 1,152 | Cretaceous |
| Belle Fourche Shale | 1,245 | Cretaceous |
| Mowry Shale | 1,325 | Cretaceous |
| Newcastle Sandstone | 1,618 | Cretaceous |
| Skull Creek Shale | 1,788 | Cretaceous |
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 HoleSpudded
1955-10-24
Measured depth
1,890 ft
True vertical depth
1,890 ft
Location
43.562188, -103.186376
43.56219, -103.18638 · Surface location as filed with South Dakota⌘ or Ctrl + scroll to zoom
Every well in Custer County, South Dakota
South Dakota state record, from SD_wells_SDOILexport_Export__wells_Table_4_Web.parquet. Corpus built 2026-09-11.