Duff 'O' 1
API 15081206860000 · Haskell County, Kansas · DUFFO field
Recompleted
API
15081206860000
Operator
OXY USA Inc.
County
Haskell
Field
DUFFO
Location
Permit
12-MAR-1991
Spudded
1991-04-09
Completed
1991-06-12
Measured depth
5,675 ft
Formation tops
Kansas records 78 formations for this well, shallowest first.
| Formation | Top (ft) | Base (ft) | Picks |
|---|---|---|---|
| Day Creek Dolomite Formation | 968 | — | 1 |
| Blaine Formation | 1,302 | 1,366 | 1 |
| Cedar Hills Sandstone Formation | 1,418 | 1,566 | 1 |
| Stone Corral Formation | 1,835 | 1,910 | 1 |
| Wellington Formation | 2,262 | — | 1 |
| Hutchinson Salt Member | 2,384 | — | 1 |
| Hollenberg Limestone Member | 2,599 | — | 1 |
| Chase Group | 2,620 | — | 1 |
| Herington Limestone Member | 2,620 | — | 1 |
| Paddock Shale Member | 2,634 | — | 1 |
| Krider Limestone Member | 2,640 | — | 1 |
| Odell Shale Formation | 2,662 | — | 1 |
| Winfield Limestone Formation | 2,682 | — | 1 |
| Gage Shale Member | 2,706 | — | 1 |
| Towanda Limestone Member | 2,730 | 2,768 | 1 |
| Fort Riley Limestone Member | 2,778 | 2,824 | 1 |
| Florence Limestone Member | 2,830 | — | 1 |
| Matfield Shale Formation | 2,847 | — | 1 |
| Wreford Limestone Formation | 2,866 | — | 1 |
| Council Grove Group | 2,898 | — | 1 |
| Speiser Shale Formation | 2,898 | — | 1 |
| Funston Formation | 2,912 | — | 1 |
| Blue Rapids Shale Formation | 2,946 | — | 1 |
| Crouse Limestone Formation | 2,959 | — | 1 |
| Easly Creek Shale Formation | 2,972 | — | 1 |
| Middleburg Limestone Member | 2,982 | — | 1 |
| Hooser Shale Member | 2,991 | — | 1 |
| Eiss Limestone Member | 3,003 | — | 1 |
| Stearns Shale Formation | 3,006 | — | 1 |
| Morrill Limestone Member | 3,016 | — | 1 |
| Florena Shale Member | 3,022 | — | 1 |
| Cottonwood Limestone Member | 3,026 | — | 1 |
| Eskridge Shale Formation | 3,038 | — | 1 |
| Neva Limestone Member | 3,058 | — | 1 |
| Roca Shale Formation | 3,126 | — | 1 |
| Howe Limestone Member | 3,146 | — | 1 |
| Johnson Shale Formation | 3,181 | — | 1 |
| Long Creek Limestone Member | 3,196 | — | 1 |
| Janesville Shale Formation | 3,212 | — | 1 |
| Falls City Limestone Formation | 3,231 | — | 1 |
| Onaga Shale Formation | 3,250 | — | 1 |
| Wabaunsee Group | 3,284–3,320 | — | 3 |
| Root Shale Formation | 3,403 | — | 1 |
| Stotler Limestone Formation | 3,422 | — | 1 |
| Red Shale Bed | 3,526 | — | 1 |
| Severy Shale Formation | 3,588 | — | 1 |
| Shawnee Group | 3,597 | — | 1 |
| Topeka Limestone Formation | 3,597 | — | 1 |
| Heebner Shale Member | 4,006 | — | 1 |
| Toronto Limestone Member | 4,020 | — | 1 |
| Iatan Limestone Member | 4,052 | — | 1 |
| Lansing Group | 4,098 | — | 2 |
| Iola Limestone Formation | 4,264 | — | 1 |
| Muncie Creek Shale Member | 4,335 | — | 1 |
| Dewey Limestone Formation | 4,354 | 4,374 | 1 |
| Stark Shale Member | 4,502 | — | 1 |
| Swope Limestone Formation | 4,516 | — | 1 |
| Hushpuckney Shale Member | 4,566 | — | 1 |
| Hertha Limestone Formation | 4,582 | — | 1 |
| Mound City Shale Member | 4,609 | — | 1 |
| Exline Limestone Member | 4,610 | — | 1 |
| Pleasanton Group | 4,656 | — | 1 |
| Marmaton Group | 4,668 | — | 1 |
| Fort Scott Limestone Formation | 4,782 | — | 1 |
| Little Osage Shale Member | 4,816 | — | 1 |
| Cherokee Group | 4,836 | — | 1 |
| Excello Shale Member | 4,836 | — | 1 |
| Verdigris Limestone Member | 4,884 | — | 1 |
| Atokan Stage | 5,008 | — | 2 |
| Atoka Shale Bed | 5,092 | — | 1 |
| Upper Kearny Member | 5,199 | — | 1 |
| Middle Morrowan Limestone Bed | 5,248 | — | 1 |
| Chesteran Stage | 5,338 | — | 1 |
| Mississippian System | 5,338 | — | 1 |
| Meramecian Stage | 5,472 | — | 1 |
| Ste. Genevieve Limestone Formation | 5,472 | — | 1 |
| St. Louis Limestone Formation | 5,510–5,616 | — | 3 |
| Lower Kearny Member | — | — | 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. 2 formations were picked at more than one depth by different Kansas sources, and their range is shown rather than one of the answers.
Location
37.655502, -101.049759
37.65550, -101.04976 · 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.