UNDERWOOD 'A' 4
API 15175215790000 · Seward County, Kansas · ARCHER field
Producing
API
15175215790000
Operator
BCE-Mach LLC
County
Seward
Field
ARCHER
Location
Permit
07-NOV-1996
Spudded
1996-11-20
Completed
1997-01-03
Measured depth
6,650 ft
Formation tops
Kansas records 63 formations for this well, shallowest first.
| Formation | Top (ft) | Base (ft) | Picks |
|---|---|---|---|
| Wellington Formation | 2,186 | — | 1 |
| Hutchinson Salt Member | 2,338 | — | 1 |
| Hollenberg Limestone Member | 2,622 | — | 1 |
| Chase Group | 2,654 | — | 1 |
| Herington Limestone Member | 2,654 | — | 1 |
| Paddock Shale Member | 2,675 | — | 1 |
| Krider Limestone Member | 2,685 | — | 1 |
| Odell Shale Formation | 2,728 | — | 1 |
| Winfield Limestone Formation | 2,738 | — | 1 |
| Gage Shale Member | 2,783 | — | 1 |
| Towanda Limestone Member | 2,800 | 2,850 | 1 |
| Fort Riley Limestone Member | 2,856 | 2,915 | 1 |
| Florence Limestone Member | 2,916 | — | 1 |
| Matfield Shale Formation | 2,941 | — | 1 |
| Wreford Limestone Formation | 2,954 | — | 1 |
| Council Grove Group | 2,987 | — | 1 |
| Speiser Shale Formation | 2,987 | — | 1 |
| Funston Formation | 2,999 | — | 1 |
| Blue Rapids Shale Formation | 3,053 | — | 1 |
| Crouse Limestone Formation | 3,063 | — | 1 |
| Easly Creek Shale Formation | 3,088 | — | 1 |
| Middleburg Limestone Member | 3,092 | — | 1 |
| Hooser Shale Member | 3,117 | — | 1 |
| Eiss Limestone Member | 3,123 | — | 1 |
| Stearns Shale Formation | 3,135 | — | 1 |
| Morrill Limestone Member | 3,142 | — | 1 |
| Florena Shale Member | 3,168 | — | 1 |
| Cottonwood Limestone Member | 3,174 | — | 1 |
| Eskridge Shale Formation | 3,218 | — | 1 |
| Neva Limestone Member | 3,265 | — | 1 |
| Roca Shale Formation | 3,320 | — | 1 |
| Wabaunsee Group | 3,450–3,558 | — | 3 |
| Root Shale Formation | 3,583 | — | 1 |
| Stotler Limestone Formation | 3,629 | — | 1 |
| Heebner Shale Member | 4,312 | — | 1 |
| Toronto Limestone Member | 4,324 | — | 1 |
| Iatan Limestone Member | 4,378 | — | 1 |
| Lansing Group | 4,444 | — | 2 |
| Muncie Creek Shale Member | 4,702 | — | 1 |
| B/DRUM | — | 4,744 | 1 |
| Cherryvale Shale Formation | 4,806 | — | 1 |
| Dennis Limestone Formation | 4,822 | — | 1 |
| Stark Shale Member | 4,993 | — | 1 |
| Pleasanton Group | 5,150 | — | 1 |
| Marmaton Group | 5,159 | — | 1 |
| Altamont Limestone Formation | 5,190 | — | 1 |
| Pawnee Limestone Formation | 5,267 | — | 1 |
| Fort Scott Limestone Formation | 5,312 | — | 1 |
| Little Osage Shale Member | 5,382 | — | 1 |
| Cherokee Group | 5,443 | — | 1 |
| Excello Shale Member | 5,443 | — | 1 |
| Verdigris Limestone Member | 5,542 | — | 1 |
| Atoka Shale Bed | 5,662 | — | 1 |
| Middle Morrowan Limestone Bed | 5,816–6,061 | — | 3 |
| Upper Kearny Member | 5,820 | — | 1 |
| Chesteran Stage | 6,125 | — | 1 |
| Chesteran Zone C Bed | 6,125 | 6,224 | 1 |
| Mississippian System | 6,125–6,144 | — | 2 |
| Chesteran Zone B Bed | 6,224 | 6,328 | 1 |
| Chesteran Zone A Bed | 6,328 | 6,462 | 1 |
| Meramecian Stage | 6,462 | — | 1 |
| Ste. Genevieve Limestone Formation | 6,462 | — | 1 |
| 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. 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
37.077774, -100.980463
37.07777, -100.98046 · Surface location as filed with Kansas⌘ or Ctrl + scroll to zoom
Every well in Seward County, Kansas
Kansas state record, from KS_wells_ks_wells.parquet. Corpus built 2026-09-11.