Cockrell 1 Lillegaard
API 4003120017 · Corson County, South Dakota · Wildcat field
Plugged and AbandonedDry Hole-Oil show
API
4003120017
Operator
Cockrell Oil Corp.
County
Corson
Field
Wildcat
Location
SENE Sec 13 Twp 022N Rng 18E
Permit
740
Formation tops
South Dakota records 17 formations for this well, shallowest first.
| Formation | Top (ft) | Age |
|---|---|---|
| Niobrara Formation | 2,520 | Cretaceous |
| Greenhorn Limestone | 3,090 | Cretaceous |
| Fall River Sandstone | 3,855 | Cretaceous |
| Morrison Formation | 3,980 | Jurassic |
| Piper Formation | 4,304 | Triassic |
| Minnelusa Formation | 4,520 | Permian/Pennsylvanian |
| Minnekahta Limestone | 4,580 | Permian |
| Charles Formation | 5,360 | Mississippian |
| Mission Canyon Limestone | 5,670 | Mississippian |
| Lodgepole Limestone | 6,060 | Mississippian |
| Three Forks Shale | 6,430 | Devonian |
| Nisku Formation | 6,580 | Devonian |
| Duperow Formation | 6,660 | Devonian |
| Souris River Formation | 6,730 | Devonian |
| Interlake Dolomite | 6,865 | Silurian |
| Stony Mountain Formation | 7,050 | Ordovician |
| Red River Formation | 7,304 | 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
1975-12-12
Measured depth
7,650 ft
True vertical depth
7,650 ft
Location
45.871207, -101.827077
45.87121, -101.82708 · Surface location as filed with South Dakota⌘ or Ctrl + scroll to zoom
Every well in Corson County, South Dakota
South Dakota state record, from SD_wells_SDOILexport_Export__wells_Table_4_Web.parquet. Corpus built 2026-09-11.