Investors 1 Holloway
API 4004120002 · Dewey County, South Dakota · Lantry field
Plugged and AbandonedDry Hole-Oil show
API
4004120002
Operator
Investors Drilling Ventures Inc.
County
Dewey
Field
Lantry
Location
Permit
560
Formation tops
South Dakota records 16 formations for this well, shallowest first.
| Formation | Top (ft) | Age |
|---|---|---|
| Niobrara Formation | 1,400 | Cretaceous |
| Greenhorn Limestone | 2,180 | Cretaceous |
| Belle Fourche Shale | 2,255 | Cretaceous |
| Dakota Mud | 2,685 | Cretaceous |
| Skull Creek Shale | 2,775 | Cretaceous |
| Fall River Sandstone | 2,935 | Cretaceous |
| Sundance Formation | 3,075 | Triassic |
| Piper Formation | 3,255 | Triassic |
| Minnelusa Formation | 3,335 | Permian/Pennsylvanian |
| Charles Formation | 4,040 | Mississippian |
| Mission Canyon Limestone | 4,145 | Mississippian |
| Lodgepole Limestone | 4,420 | Mississippian |
| Three Forks Shale | 4,700 | Devonian |
| Duperow Formation | 4,755 | Devonian |
| Stony Mountain Formation | 4,955 | Ordovician |
| Red River Formation | 4,999 | 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 Hole-Oil showSpudded
1970-05-15
Measured depth
5,066 ft
True vertical depth
5,066 ft
Location
45.036435, -101.453934
45.03643, -101.45393 · 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.