Roosevelt 12-21 Porter
API 4004720203 · Fall River County, South Dakota · Porter Ranch field
Plugged and AbandonedDry Hole-Oil show
API
4004720203
Operator
P. K. Roosevelt
County
Fall River
Field
Porter Ranch
Location
Permit
1402
Formation tops
South Dakota records 12 formations for this well, shallowest first.
| Formation | Top (ft) | Age |
|---|---|---|
| Dakota Mud | 697 | Cretaceous |
| Lakota Formation | 900 | Cretaceous |
| Morrison Formation | 1,083 | Jurassic |
| Sundance Formation | 1,208 | Triassic |
| Goose Egg Formation | 1,698 | Triassic/Permian |
| Minnekahta Limestone | 1,950 | Permian |
| Opeche Shale | 2,007 | Permian |
| Minnelusa Formation | 2,141 | Permian/Pennsylvanian |
| Converse Sand, Minnelusa Formation | 2,208 | Permian |
| Red Marker, Minnelusa Formation | 2,534 | Permian/Pennsylvanian |
| 2nd Leo Sandstone, Minnelusa Formation | 2,662 | Pennsylvanian |
| 3rd Leo Sandstone, Minnelusa Formation | 2,763 | 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
Plugged and AbandonedDry Hole-Oil showSpudded
1986-05-30
Measured depth
2,850 ft
True vertical depth
2,850 ft
Location
43.251212, -103.894281
43.25121, -103.89428 · Surface location as filed with South Dakota⌘ or Ctrl + scroll to zoom
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.