Harmon 1 Olson
API 4001905012 · Butte County, South Dakota · Wildcat field
Converted-Fresh Water SupplyDry Hole-Oil show
API
4001905012
Operator
R. P. Harmon Associates Inc.
County
Butte
Field
Wildcat
Location
Permit
53
Formation tops
South Dakota records 17 formations for this well, shallowest first.
| Formation | Top (ft) | Age |
|---|---|---|
| Fall River Sandstone | 650 | Cretaceous |
| Lakota Formation | 800 | Cretaceous |
| Morrison Formation | 950 | Jurassic |
| Sundance Formation | 1,075 | Triassic |
| Piper Formation | 1,450 | Triassic |
| Spearfish Formation | 1,475 | Triassic/Permian |
| Pine Salt, Spearfish Formation | 2,000 | Permian |
| Minnekahta Limestone | 2,150 | Permian |
| Opeche Shale | 2,210 | Permian |
| Minnelusa Formation | 2,310 | Permian/Pennsylvanian |
| Red Marker, Minnelusa Formation | 2,685 | Permian/Pennsylvanian |
| Madison Group | 2,910 | Mississippian |
| Englewood Limestone | 3,575 | Mississippian/Devonian |
| Three Forks Shale | 3,595 | Devonian |
| Red River Formation | 3,635 | Ordovician |
| Winnipeg Formation | 3,925 | Ordovician |
| Deadwood Formation | 4,004 | Ordovician/Cambrian |
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
Converted-Fresh Water SupplyDry Hole-Oil showSpudded
1951-10-31
Measured depth
4,016 ft
True vertical depth
4,016 ft
Location
44.714738, -103.733704
44.71474, -103.73370 · Surface location as filed with South Dakota⌘ or Ctrl + scroll to zoom
Every well in Butte County, South Dakota
South Dakota state record, from SD_wells_SDOILexport_Export__wells_Table_4_Web.parquet. Corpus built 2026-09-11.