Herndon 1 Merkel
API 4004105005 · Dewey County, South Dakota · Wildcat field
Plugged and AbandonedDry Hole
API
4004105005
Operator
Herndon Drilling Co.
County
Dewey
Field
Wildcat
Location
SESE Sec 27 Twp 017N Rng 27E
Permit
132
Formation tops
South Dakota records 12 formations for this well, shallowest first.
| Formation | Top (ft) | Age |
|---|---|---|
| Niobrara Formation | 1,090 | Cretaceous |
| Carlile Shale | 1,340 | Cretaceous |
| Greenhorn Limestone | 1,680 | Cretaceous |
| Graneros | 1,770 | Cretaceous |
| Newcastle Sandstone | 2,180 | Cretaceous |
| Morrison Formation | 2,500 | Jurassic |
| Sundance Formation | 2,595 | Jurassic |
| Spearfish Formation | 2,650 | Triassic/Permian |
| Minnelusa Formation | 2,840 | Permian/Pennsylvanian |
| Lodgepole Limestone | 3,500 | Mississippian |
| Englewood Limestone | 3,990 | Mississippian/Devonian |
| Red River Formation | 4,220 | 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
1955-08-15
Measured depth
4,324 ft
True vertical depth
4,324 ft
Location
45.401870, -100.774195
45.40187, -100.77420 · 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.