UNDERWOOD 'A' 3
API 15175213460000 · Seward County, Kansas · ARCHER field
Recompleted
API
15175213460000
Operator
Merit Energy Company, LLC
County
Seward
Field
ARCHER
Location
Permit
11-OCT-1993
Spudded
1993-10-20
Completed
1994-01-13
Measured depth
6,700 ft
Formation tops
Kansas records 72 formations for this well, shallowest first.
| Formation | Top (ft) | Base (ft) | Picks |
|---|---|---|---|
| Stone Corral Formation | 1,598 | 1,621 | 2 |
| Wellington Formation | 2,184 | — | 1 |
| Hutchinson Salt Member | 2,335 | — | 1 |
| Hollenberg Limestone Member | 2,621 | — | 1 |
| Chase Group | 2,651 | — | 1 |
| Herington Limestone Member | 2,651 | — | 1 |
| Paddock Shale Member | 2,671 | — | 1 |
| Krider Limestone Member | 2,682 | — | 1 |
| Odell Shale Formation | 2,726 | — | 1 |
| Winfield Limestone Formation | 2,738 | — | 1 |
| Gage Shale Member | 2,781 | — | 1 |
| Towanda Limestone Member | 2,797 | 2,854 | 1 |
| Fort Riley Limestone Member | 2,858 | 2,916 | 1 |
| Florence Limestone Member | 2,917 | — | 1 |
| Matfield Shale Formation | 2,945 | — | 1 |
| Wreford Limestone Formation | 2,959 | — | 1 |
| Council Grove Group | 2,990 | — | 1 |
| Speiser Shale Formation | 2,990 | — | 1 |
| Funston Formation | 3,004 | — | 1 |
| Blue Rapids Shale Formation | 3,060 | — | 1 |
| Crouse Limestone Formation | 3,070 | — | 1 |
| Easly Creek Shale Formation | 3,094 | — | 1 |
| Middleburg Limestone Member | 3,100 | — | 1 |
| Hooser Shale Member | 3,120 | — | 1 |
| Eiss Limestone Member | 3,131 | — | 1 |
| Stearns Shale Formation | 3,142 | — | 1 |
| Morrill Limestone Member | 3,150 | — | 1 |
| Florena Shale Member | 3,173 | — | 1 |
| Cottonwood Limestone Member | 3,184 | — | 1 |
| Eskridge Shale Formation | 3,226 | — | 1 |
| Neva Limestone Member | 3,274 | — | 1 |
| Roca Shale Formation | 3,330 | — | 1 |
| Howe Limestone Member | 3,344 | — | 1 |
| Johnson Shale Formation | 3,368 | — | 1 |
| Long Creek Limestone Member | 3,396 | — | 1 |
| Janesville Shale Formation | 3,445 | — | 1 |
| Wabaunsee Group | 3,468–3,586 | — | 3 |
| Root Shale Formation | 3,612 | — | 1 |
| Stotler Limestone Formation | 3,666 | — | 1 |
| Severy Shale Formation | 3,902 | — | 1 |
| Shawnee Group | 3,920 | — | 1 |
| Topeka Limestone Formation | 3,920 | — | 1 |
| Heebner Shale Member | 4,328 | — | 1 |
| Toronto Limestone Member | 4,347 | — | 1 |
| Iatan Limestone Member | 4,393 | — | 1 |
| Lansing Group | 4,464 | — | 2 |
| Muncie Creek Shale Member | 4,708 | — | 1 |
| B/DRUM | — | 4,731 | 1 |
| Dennis Limestone Formation | 4,840 | — | 1 |
| Stark Shale Member | 5,006 | — | 1 |
| Swope Limestone Formation | 5,020 | — | 1 |
| Hushpuckney Shale Member | 5,051 | — | 1 |
| Hertha Limestone Formation | 5,128 | — | 1 |
| Pleasanton Group | 5,167 | — | 1 |
| Marmaton Group | 5,178 | — | 1 |
| Altamont Limestone Formation | 5,203 | — | 1 |
| Pawnee Limestone Formation | 5,282 | — | 1 |
| Fort Scott Limestone Formation | 5,330 | — | 1 |
| Little Osage Shale Member | 5,403 | — | 1 |
| Cherokee Group | 5,467 | — | 1 |
| Excello Shale Member | 5,467 | — | 1 |
| Verdigris Limestone Member | 5,574 | — | 1 |
| Atoka Shale Bed | 5,696 | — | 1 |
| Middle Morrowan Limestone Bed | 5,857–6,113 | — | 3 |
| Upper Kearny Member | 5,857 | — | 1 |
| Chesteran Stage | 6,150 | — | 1 |
| Chesteran Zone C Bed | 6,150 | 6,306 | 1 |
| Mississippian System | 6,150–6,156 | — | 2 |
| Chesteran Zone B Bed | 6,306 | 6,407 | 1 |
| Chesteran Zone A Bed | 6,407 | 6,568 | 1 |
| Meramecian Stage | 6,568 | — | 1 |
| Ste. Genevieve Limestone Formation | 6,568 | — | 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
37.070578, -100.978033
37.07058, -100.97803 · 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.