21-29 Federal

API 4004720308 · Fall River County, South Dakota · Wildcat field

Plugged and AbandonedDry Hole-Oil show
API
4004720308
Operator
Black Hills Exploration and Production Inc.
County
Fall River
Field
Wildcat
Permit
1682

Formation tops

South Dakota records 19 formations for this well, shallowest first.

FormationTop (ft)Age
Eagle Sandstone Member, Pierre Shale815Cretaceous
Mowry Shale1,255Cretaceous
Skull Creek Shale1,460Cretaceous
Fall River Sandstone1,704Cretaceous
Morrison Formation1,924Jurassic
Sundance Formation2,136Triassic
Spearfish Formation2,516Triassic/Permian
Goose Egg Formation2,668Triassic/Permian
Forelle Limestone, Goose Egg Formation2,734Permian
Glendo Shale, Goose Egg Formation2,764Permian
Minnekahta Limestone2,860Permian
Opeche Shale2,908Permian
Minnelusa Formation3,054Permian/Pennsylvanian
Converse Sand, Minnelusa Formation3,148Permian
Red Marker, Minnelusa Formation3,440Permian/Pennsylvanian
1st Leo Sandstone, Minnelusa Formation3,452Pennsylvanian
2nd Leo Sandstone, Minnelusa Formation3,560Pennsylvanian
3rd Leo Sandstone, Minnelusa Formation3,616Pennsylvanian
4th Leo Sandstone, Minnelusa Formation3,664Pennsylvanian

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 show
Spudded
2002-11-11
Measured depth
3,750 ft
True vertical depth
3,750 ft

Location

43.071131, -104.025667

43.07113, -104.02567 · Surface location as filed with South Dakota

Every well in Fall River County, South Dakota

South Dakota state record, from SD_wells_SDOILexport_Export__wells_Table_4_Web.parquet. Corpus built 2026-09-11.