Cassill 'A' 5-31
API 15081211290000 · Haskell County, Kansas · LETTE SOUTHEAST field
Producing
API
15081211290000
Operator
McCoy Petroleum Corporation
County
Haskell
Field
LETTE SOUTHEAST
Location
Permit
03-JUN-1997
Spudded
1997-07-07
Completed
1997-08-19
Measured depth
4,775 ft
Formation tops
Kansas records 55 formations for this well, shallowest first.
| Formation | Top (ft) | Base (ft) | Picks |
|---|---|---|---|
| Wellington Formation | 2,189 | — | 1 |
| Hutchinson Salt Member | 2,331 | — | 1 |
| Chase Group | 2,628 | — | 1 |
| Herington Limestone Member | 2,628 | — | 1 |
| Paddock Shale Member | 2,646 | — | 1 |
| Krider Limestone Member | 2,658 | — | 1 |
| Odell Shale Formation | 2,691 | — | 1 |
| Winfield Limestone Formation | 2,702 | — | 1 |
| Gage Shale Member | 2,728 | — | 1 |
| Towanda Limestone Member | 2,744 | 2,794 | 1 |
| Fort Riley Limestone Member | 2,806 | 2,842 | 1 |
| Florence Limestone Member | 2,851 | — | 1 |
| Matfield Shale Formation | 2,884 | — | 1 |
| Wreford Limestone Formation | 2,900 | — | 1 |
| Council Grove Group | 2,929 | — | 1 |
| Speiser Shale Formation | 2,929 | — | 1 |
| Funston Formation | 2,940 | — | 1 |
| Blue Rapids Shale Formation | 2,980 | — | 1 |
| Crouse Limestone Formation | 2,992 | — | 1 |
| Easly Creek Shale Formation | 3,010 | — | 1 |
| Middleburg Limestone Member | 3,018 | — | 1 |
| Hooser Shale Member | 3,028 | — | 1 |
| Eiss Limestone Member | 3,040 | — | 1 |
| Stearns Shale Formation | 3,050 | — | 1 |
| Morrill Limestone Member | 3,053 | — | 1 |
| Florena Shale Member | 3,070 | — | 1 |
| Cottonwood Limestone Member | 3,076 | — | 1 |
| Eskridge Shale Formation | 3,105 | — | 1 |
| Neva Limestone Member | 3,117 | — | 1 |
| Roca Shale Formation | 3,206 | — | 1 |
| Howe Limestone Member | 3,220 | — | 1 |
| Johnson Shale Formation | 3,250 | — | 1 |
| Long Creek Limestone Member | 3,256 | — | 1 |
| Janesville Shale Formation | 3,290 | — | 1 |
| Falls City Limestone Formation | 3,311 | — | 1 |
| Onaga Shale Formation | 3,334 | — | 1 |
| Wabaunsee Group | 3,334–3,416 | — | 3 |
| Root Shale Formation | 3,492 | — | 1 |
| Stotler Limestone Formation | 3,502 | — | 1 |
| Red Shale Bed | 3,627 | — | 1 |
| Shawnee Group | 3,716–3,956 | — | 3 |
| Topeka Limestone Formation | 3,716 | — | 1 |
| Jones Pont Shale Member | 3,936 | — | 1 |
| Heebner Shale Member | 4,150 | — | 1 |
| Toronto Limestone Member | 4,168 | — | 1 |
| Iatan Limestone Member | 4,216 | — | 1 |
| Lansing Group | 4,216–4,252 | — | 3 |
| Iola Limestone Formation | 4,404 | — | 1 |
| Muncie Creek Shale Member | 4,474 | — | 1 |
| Dewey Limestone Formation | 4,497 | 4,518 | 1 |
| Stark Shale Member | 4,650 | — | 1 |
| Swope Limestone Formation | 4,656 | — | 1 |
| Hushpuckney Shale Member | 4,736 | — | 1 |
| Hertha Limestone Formation | 4,752 | — | 1 |
| Kansas City Group | — | — | 1 |
A dash is a formation Kansas records for this well without a depth. In the base column a dash is also a depth Kansas’s sources record differently from one another. 3 formations were picked at more than one depth by different Kansas sources, and their range is shown rather than one of the answers.
Location
37.401216, -100.748734
37.40122, -100.74873 · Surface location as filed with Kansas⌘ or Ctrl + scroll to zoom
Every well in Haskell County, Kansas
Kansas state record, from KS_wells_ks_wells.parquet. Corpus built 2026-09-11.