Investors 7 Holloway
API 4004120009 · Dewey County, South Dakota · Lantry field
Plugged and AbandonedOil
API
4004120009
Operator
Investors Drilling Ventures Inc.
County
Dewey
Field
Lantry
Location
Permit
584
Formation tops
South Dakota records 12 formations for this well, shallowest first.
| Formation | Top (ft) | Age |
|---|---|---|
| Greenhorn Limestone | 2,190 | Cretaceous |
| Dakota Mud | 2,695 | Cretaceous |
| Fall River Sandstone | 2,950 | Cretaceous |
| Morrison Formation | 3,000 | Jurassic |
| Piper Formation | 3,260 | Triassic |
| Minnelusa Formation | 3,350 | Permian/Pennsylvanian |
| Mission Canyon Limestone | 4,110 | Mississippian |
| Lodgepole Limestone | 4,415 | Mississippian |
| Three Forks Shale | 4,708 | Devonian |
| Duperow Formation | 4,767 | Devonian |
| Stony Mountain Formation | 4,980 | Ordovician |
| Red River Formation | 5,018 | 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 AbandonedOilSpudded
1970-08-14
Completed
1971-01-01
Measured depth
5,078 ft
True vertical depth
5,078 ft
Location
45.028270, -101.459104
45.02827, -101.45910 · 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.