Baldwin 1 Triple 777 Ranch
API 4003320007 · Custer County, South Dakota · Wildcat field
Converted-Fresh Water SupplyDry Hole
API
4003320007
Operator
D. H. Baldwin
County
Custer
Field
Wildcat
Location
NENE Sec 12 Twp 004S Rng 08E
Permit
1043
Formation tops
South Dakota records 5 formations for this well, shallowest first.
| Formation | Top (ft) | Age |
|---|---|---|
| Goose Egg Formation | 3,052 | Triassic/Permian |
| Minnekahta Limestone | 3,367 | Permian |
| Opeche Shale | 3,413 | Permian |
| Converse Sand, Minnelusa Formation | 3,581 | Permian |
| Minnelusa Formation | 3,581 | Permian/Pennsylvanian |
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 HoleSpudded
1980-10-09
Measured depth
3,778 ft
True vertical depth
3,778 ft
Location
43.721541, -103.101685
43.72154, -103.10169 · 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.