Amerada 1 USA Ellis Tract
API 4006305007 · Harding County, South Dakota · West Short Pine Hills field
Plugged and AbandonedDry Hole
API
4006305007
Operator
Amerada Petroleum Co.
County
Harding
Field
West Short Pine Hills
Location
SESE Sec 24 Twp 017N Rng 01E
Permit
187
Formation tops
South Dakota records 17 formations for this well, shallowest first.
| Formation | Top (ft) | Age |
|---|---|---|
| Pierre Shale | 620 | Cretaceous |
| Eagle Sandstone Member, Pierre Shale | 1,732 | Cretaceous |
| Shannon Sandstone Member, Pierre Shale | 1,895 | Cretaceous |
| Greenhorn Limestone | 3,292 | Cretaceous |
| Newcastle Sandstone | 4,052 | Cretaceous |
| Skull Creek Shale | 4,104 | Cretaceous |
| Fall River Sandstone | 4,380 | Cretaceous |
| Piper Formation | 5,190 | Triassic |
| Spearfish Formation | 5,398 | Triassic/Permian |
| Minnekahta Limestone | 5,763 | Permian |
| Minnelusa Formation | 5,905 | Permian/Pennsylvanian |
| Charles Formation | 6,320 | Mississippian |
| Lodgepole Limestone | 7,030 | Mississippian |
| Duperow Formation | 7,434 | Devonian |
| Interlake Dolomite | 7,514 | Silurian |
| Red River Formation | 7,714 | Ordovician |
| Winnipeg Formation | 8,210 | 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 HoleSpudded
1956-05-31
Measured depth
8,362 ft
True vertical depth
8,362 ft
Location
45.416931, -103.938185
45.41693, -103.93819 · 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.