Signal 1 State
API 4006305069 · Harding County, South Dakota · Wildcat field
Plugged and AbandonedDry Hole-Oil show
API
4006305069
Operator
Signal Drilling and Exploration Inc.
County
Harding
Field
Wildcat
Location
Permit
310
Formation tops
South Dakota records 15 formations for this well, shallowest first.
| Formation | Top (ft) | Age |
|---|---|---|
| Niobrara Formation | 2,637 | Cretaceous |
| Greenhorn Limestone | 3,216 | Cretaceous |
| Graneros | 3,288 | Cretaceous |
| Newcastle Sandstone | 3,888 | Cretaceous |
| Skull Creek Shale | 3,934 | Cretaceous |
| Morrison Formation | 4,420 | Jurassic |
| Sundance Formation | 4,653 | Triassic |
| Piper Formation | 5,093 | Triassic |
| Spearfish Formation | 5,375 | Triassic/Permian |
| Minnekahta Limestone | 5,810 | Permian |
| Minnelusa Formation | 5,958 | Permian/Pennsylvanian |
| Charles Formation | 6,512 | Mississippian |
| Mission Canyon Limestone | 6,980 | Mississippian |
| Lodgepole Limestone | 7,330 | Mississippian |
| Red River Formation | 8,416 | 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
1960-11-02
Measured depth
8,633 ft
True vertical depth
8,633 ft
Location
45.908569, -103.812769
45.90857, -103.81277 · Surface location as filed with South Dakota⌘ or Ctrl + scroll to zoom
Every well in Harding County, South Dakota
South Dakota state record, from SD_wells_SDOILexport_Export__wells_Table_4_Web.parquet. Corpus built 2026-09-11.