Investors 1 State
API 4004120003 · Dewey County, South Dakota · Lantry field
Plugged and AbandonedDry Hole
API
4004120003
Operator
Investors Drilling Ventures Inc.
County
Dewey
Field
Lantry
Location
NESW Sec 11 Twp 012N Rng 22E
Permit
561
Formation tops
South Dakota records 17 formations for this well, shallowest first.
| Formation | Top (ft) | Age |
|---|---|---|
| Niobrara Formation | 1,400 | Cretaceous |
| Carlile Shale | 1,790 | Cretaceous |
| Greenhorn Limestone | 2,185 | Cretaceous |
| Belle Fourche Shale | 2,270 | Cretaceous |
| Mowry Shale | 2,470 | Cretaceous |
| Dakota Mud | 2,700 | Cretaceous |
| Skull Creek Shale | 2,780 | Cretaceous |
| Fall River Sandstone | 2,956 | Cretaceous |
| Morrison Formation | 3,000 | Jurassic |
| Piper Formation | 3,215 | Triassic |
| Minnelusa Formation | 3,300 | Permian/Pennsylvanian |
| Madison Group | 4,030 | Mississippian |
| Lodgepole Limestone | 4,380 | Mississippian |
| Three Forks Shale | 4,490 | Devonian |
| Duperow Formation | 4,710 | Devonian |
| Stony Mountain Formation | 4,955 | Ordovician |
| Red River Formation | 5,030 | 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
1970-06-04
Measured depth
5,144 ft
True vertical depth
5,144 ft
Location
45.013730, -101.413002
45.01373, -101.41300 · Surface location as filed with South Dakota⌘ or Ctrl + scroll to zoom
Every well in Dewey County, South Dakota
South Dakota state record, from SD_wells_SDOILexport_Export__wells_Table_4_Web.parquet. Corpus built 2026-09-11.