STEFAN 1-21
API 15175208910000 · Seward County, Kansas · EVALYN-CONDIT EAST field
Plugged and AbandonedPlugged 1991-05-17
API
15175208910000
Operator
Chaparral Energy, Inc.
County
Seward
Field
EVALYN-CONDIT EAST
Location
Spudded
1985-12-10
Completed
1986-01-29
Plugged
1991-05-17
Measured depth
6,200 ft
Formation tops
Kansas records 74 formations for this well, shallowest first.
| Formation | Top (ft) | Base (ft) | Picks |
|---|---|---|---|
| Stone Corral Formation | — | 1,588 | 3 |
| Wellington Formation | 2,074 | — | 1 |
| Hollenberg Limestone Member | 2,618 | — | 1 |
| Chase Group | 2,643 | — | 1 |
| Herington Limestone Member | 2,643 | — | 1 |
| Paddock Shale Member | 2,660 | — | 1 |
| Krider Limestone Member | 2,674 | — | 1 |
| Odell Shale Formation | 2,723 | — | 1 |
| Winfield Limestone Formation | 2,735 | — | 1 |
| Gage Shale Member | 2,780 | — | 1 |
| Towanda Limestone Member | 2,794 | 2,859 | 1 |
| Fort Riley Limestone Member | 2,861 | 2,927 | 1 |
| Florence Limestone Member | 2,928 | — | 1 |
| Matfield Shale Formation | 2,962 | — | 1 |
| Wreford Limestone Formation | 2,976 | — | 1 |
| Council Grove Group | 3,009–3,010 | — | 2 |
| Speiser Shale Formation | 3,010 | — | 1 |
| Funston Formation | 3,018 | — | 1 |
| Blue Rapids Shale Formation | 3,080 | — | 1 |
| Crouse Limestone Formation | 3,089 | — | 1 |
| Easly Creek Shale Formation | 3,112 | — | 1 |
| Middleburg Limestone Member | 3,119 | — | 1 |
| Hooser Shale Member | 3,138 | — | 1 |
| Eiss Limestone Member | 3,148 | — | 1 |
| Stearns Shale Formation | 3,161 | — | 1 |
| Morrill Limestone Member | 3,166 | — | 1 |
| Florena Shale Member | 3,194 | — | 1 |
| Cottonwood Limestone Member | 3,200 | — | 1 |
| Eskridge Shale Formation | 3,247 | — | 1 |
| Neva Limestone Member | 3,282 | — | 1 |
| Roca Shale Formation | 3,353 | — | 1 |
| Howe Limestone Member | 3,358 | — | 1 |
| Johnson Shale Formation | 3,408 | — | 1 |
| Long Creek Limestone Member | 3,415 | — | 1 |
| Janesville Shale Formation | 3,460 | — | 1 |
| Falls City Limestone Formation | 3,461 | — | 1 |
| Wabaunsee Group | 3,505 | — | 2 |
| Heebner Shale Member | 4,358–4,360 | — | 2 |
| Toronto Limestone Member | 4,386–4,387 | — | 2 |
| Iatan Limestone Member | 4,446 | — | 1 |
| Lansing Group | 4,526 | — | 3 |
| Iola Limestone Formation | 4,760–4,812 | — | 2 |
| Kansas City Group | 4,794 | — | 1 |
| Muncie Creek Shale Member | 4,795 | — | 1 |
| Dewey Limestone Formation | 4,813–4,834 | 4,832 | 2 |
| Cherryvale Shale Formation | 4,870 | — | 1 |
| Dennis Limestone Formation | 4,900 | — | 1 |
| Stark Shale Member | 4,992–4,996 | — | 2 |
| Swope Limestone Formation | 5,007 | — | 2 |
| Hushpuckney Shale Member | 5,059 | — | 1 |
| Hertha Limestone Formation | 5,064 | — | 1 |
| Mound City Shale Member | 5,116 | — | 1 |
| Pleasanton Group | 5,183–5,184 | — | 2 |
| Marmaton Group | 5,196–5,211 | — | 2 |
| Altamont Limestone Formation | 5,224 | — | 1 |
| Novinger Limestone Bed | 5,254 | — | 1 |
| Pawnee Limestone Formation | 5,265 | — | 1 |
| Fort Scott Limestone Formation | 5,313 | — | 1 |
| Cherokee Group | 5,355–5,403 | — | 2 |
| Little Osage Shale Member | 5,356 | — | 1 |
| Excello Shale Member | 5,403–5,404 | — | 2 |
| Verdigris Limestone Member | 5,478 | — | 1 |
| Atokan Stage | 5,574 | — | 1 |
| Atoka Shale Bed | 5,620 | — | 1 |
| Middle Morrowan Limestone Bed | 5,759–5,824 | — | 4 |
| Upper Kearny Member | 5,760 | — | 1 |
| Morrowan A Sandstone Bed | 5,797–5,798 | 5,808 | 2 |
| Keyes Sandstone Bed | 5,958 | — | 1 |
| Chesteran Zone D Bed | 5,983–5,994 | 5,994 | 2 |
| Mississippian System | 5,983–5,994 | — | 2 |
| Chesteran Stage | 5,994 | — | 1 |
| Chesteran Zone C Bed | 5,994–6,095 | 6,131 | 2 |
| Chesteran Zone B Bed | 6,130–6,131 | — | 2 |
| 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. 16 formations were picked at more than one depth by different Kansas sources, and their range is shown rather than one of the answers.
Location
37.077464, -100.807052
37.07746, -100.80705 · 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.