Cassill 'A' 4-31
API 15081211220000 · Haskell County, Kansas · LETTE SOUTHEAST field
Producing
API
15081211220000
Operator
McCoy Petroleum Corporation
County
Haskell
Field
LETTE SOUTHEAST
Location
Permit
06-MAY-1997
Spudded
1997-05-28
Completed
1997-07-14
Measured depth
4,667 ft
Formation tops
Kansas records 58 formations for this well, shallowest first.
| Formation | Top (ft) | Base (ft) | Picks |
|---|---|---|---|
| Day Creek Dolomite Formation | 716 | — | 1 |
| Blaine Formation | 1,100 | 1,150 | 1 |
| Cedar Hills Sandstone Formation | 1,234 | 1,380 | 1 |
| Stone Corral Formation | 1,672 | 1,747 | 1 |
| Wellington Formation | 2,166 | — | 1 |
| Hutchinson Salt Member | 2,333 | — | 1 |
| Chase Group | 2,630 | — | 1 |
| Herington Limestone Member | 2,630 | — | 1 |
| Paddock Shale Member | 2,650 | — | 1 |
| Krider Limestone Member | 2,660 | — | 1 |
| Odell Shale Formation | 2,694 | — | 1 |
| Winfield Limestone Formation | 2,708 | — | 1 |
| Gage Shale Member | 2,732 | — | 1 |
| Towanda Limestone Member | 2,746 | 2,800 | 1 |
| Fort Riley Limestone Member | 2,812 | 2,846 | 1 |
| Florence Limestone Member | 2,850 | — | 1 |
| Matfield Shale Formation | 2,888 | — | 1 |
| Wreford Limestone Formation | 2,905 | — | 1 |
| Council Grove Group | 2,935 | — | 1 |
| Speiser Shale Formation | 2,935 | — | 1 |
| Funston Formation | 2,948 | — | 1 |
| Blue Rapids Shale Formation | 2,984 | — | 1 |
| Crouse Limestone Formation | 2,998 | — | 1 |
| Easly Creek Shale Formation | 3,014 | — | 1 |
| Middleburg Limestone Member | 3,022 | — | 1 |
| Hooser Shale Member | 3,032 | — | 1 |
| Eiss Limestone Member | 3,044 | — | 1 |
| Stearns Shale Formation | 3,051 | — | 1 |
| Morrill Limestone Member | 3,058 | — | 1 |
| Florena Shale Member | 3,070 | — | 1 |
| Cottonwood Limestone Member | 3,080 | — | 1 |
| Eskridge Shale Formation | 3,108 | — | 1 |
| Neva Limestone Member | 3,124 | — | 1 |
| Roca Shale Formation | 3,206 | — | 1 |
| Howe Limestone Member | 3,220 | — | 1 |
| Johnson Shale Formation | 3,248 | — | 1 |
| Long Creek Limestone Member | 3,255 | — | 1 |
| Janesville Shale Formation | 3,290 | — | 1 |
| Falls City Limestone Formation | 3,311 | — | 1 |
| Onaga Shale Formation | 3,332 | — | 1 |
| Wabaunsee Group | 3,332–3,412 | — | 3 |
| Root Shale Formation | 3,488 | — | 1 |
| Stotler Limestone Formation | 3,499 | — | 1 |
| Red Shale Bed | 3,620 | — | 1 |
| Severy Shale Formation | 3,706 | — | 1 |
| Shawnee Group | 3,710–3,926 | — | 3 |
| Topeka Limestone Formation | 3,710 | — | 1 |
| Jones Pont Shale Member | 3,914 | — | 1 |
| Heebner Shale Member | 4,154 | — | 1 |
| Toronto Limestone Member | 4,170 | — | 1 |
| Iatan Limestone Member | 4,222 | — | 1 |
| Lansing Group | 4,222–4,260 | — | 3 |
| Iola Limestone Formation | 4,409 | — | 1 |
| Muncie Creek Shale Member | 4,480 | — | 1 |
| Dewey Limestone Formation | 4,498 | 4,522 | 1 |
| Stark Shale Member | 4,653 | — | 1 |
| Swope Limestone Formation | 4,660 | — | 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
37.397577, -100.748770
37.39758, -100.74877 · 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.