SPEARS 1
API 15071205350000 · Greeley County, Kansas · WILDCAT field
Plugged and AbandonedPlugged 1991-01-16
API
15071205350000
Operator
Marathon Oil Company
County
Greeley
Field
WILDCAT
Location
Permit
13-DEC-1990
Spudded
1991-01-03
Completed
1991-01-16
Plugged
1991-01-16
Measured depth
5,400 ft
Formation tops
Kansas records 73 formations for this well, shallowest first.
| Formation | Top (ft) | Base (ft) | Picks |
|---|---|---|---|
| Fort Hays Limestone Member | 350 | — | 1 |
| Day Creek Dolomite Formation | 1,424 | 1,428 | 1 |
| Blaine Formation | 1,711 | 1,850 | 1 |
| Cedar Hills Sandstone Formation | 2,120 | 2,259 | 1 |
| Stone Corral Formation | 2,328 | 2,400 | 1 |
| Hollenberg Limestone Member | 2,711 | — | 1 |
| Chase Group | 2,736 | — | 1 |
| Herington Limestone Member | 2,736 | — | 1 |
| Paddock Shale Member | 2,739 | — | 1 |
| Krider Limestone Member | 2,742 | — | 1 |
| Odell Shale Formation | 2,752 | — | 1 |
| Winfield Limestone Formation | 2,780 | — | 1 |
| Gage Shale Member | 2,794 | — | 1 |
| Towanda Limestone Member | 2,817 | — | 1 |
| Fort Riley Limestone Member | 2,856 | 2,868 | 1 |
| Florence Limestone Member | 2,889 | — | 1 |
| Matfield Shale Formation | 2,896 | — | 1 |
| Wreford Limestone Formation | 2,907 | — | 1 |
| Council Grove Group | 2,934 | — | 1 |
| Speiser Shale Formation | 2,934 | — | 1 |
| Funston Formation | 2,970 | — | 1 |
| Blue Rapids Shale Formation | 2,974 | — | 1 |
| Crouse Limestone Formation | 2,991 | — | 1 |
| Easly Creek Shale Formation | 2,994 | — | 1 |
| Middleburg Limestone Member | 3,023 | — | 1 |
| Hooser Shale Member | 3,031 | — | 1 |
| Stearns Shale Formation | 3,064 | — | 1 |
| Morrill Limestone Member | 3,100 | — | 1 |
| Florena Shale Member | 3,104 | — | 1 |
| Cottonwood Limestone Member | 3,123 | — | 1 |
| Eskridge Shale Formation | 3,135 | — | 1 |
| Neva Limestone Member | 3,175 | — | 1 |
| Roca Shale Formation | 3,199 | — | 1 |
| Howe Limestone Member | 3,246 | — | 1 |
| Johnson Shale Formation | 3,278 | — | 1 |
| Long Creek Limestone Member | 3,319 | — | 1 |
| Janesville Shale Formation | 3,332 | — | 1 |
| Falls City Limestone Formation | 3,336 | — | 1 |
| Onaga Shale Formation | 3,349 | — | 1 |
| Wabaunsee Group | 3,354–3,428 | — | 3 |
| Root Shale Formation | 3,507 | — | 1 |
| Stotler Limestone Formation | 3,552 | — | 1 |
| Red Shale Bed | 3,658 | — | 1 |
| Severy Shale Formation | 3,699 | — | 1 |
| Shawnee Group | 3,709 | — | 1 |
| Topeka Limestone Formation | 3,709 | — | 1 |
| Heebner Shale Member | 4,000 | — | 1 |
| Toronto Limestone Member | 4,030 | — | 1 |
| Iatan Limestone Member | 4,064 | — | 1 |
| Lansing Group | 4,121 | — | 1 |
| Iola Limestone Formation | 4,244 | — | 1 |
| Muncie Creek Shale Member | 4,276 | — | 1 |
| Dewey Limestone Formation | 4,292 | 4,306 | 1 |
| Dennis Limestone Formation | 4,366 | — | 1 |
| Stark Shale Member | 4,378 | — | 1 |
| Swope Limestone Formation | 4,391 | — | 1 |
| Hushpuckney Shale Member | 4,422 | — | 1 |
| Hertha Limestone Formation | 4,437 | — | 1 |
| Mound City Shale Member | 4,458 | — | 1 |
| Exline Limestone Member | 4,464 | — | 1 |
| Pleasanton Group | 4,495 | — | 1 |
| Marmaton Group | 4,530 | — | 1 |
| Altamont Limestone Formation | 4,565 | — | 1 |
| Pawnee Limestone Formation | 4,586 | — | 1 |
| Fort Scott Limestone Formation | 4,652 | — | 1 |
| Little Osage Shale Member | 4,672 | — | 1 |
| Cherokee Group | 4,690 | — | 1 |
| Excello Shale Member | 4,690 | — | 1 |
| Upper Kearny Member | 5,042 | — | 1 |
| Middle Morrowan Limestone Bed | 5,151 | — | 1 |
| Meramecian Stage | 5,282 | — | 1 |
| Mississippian System | 5,282 | — | 1 |
| Ste. Genevieve Limestone Formation | 5,282 | — | 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. 1 formation was picked at more than one depth by different Kansas sources, and its range is shown rather than one of the answers.
Location
38.282709, -101.934093
38.28271, -101.93409 · Surface location as filed with Kansas⌘ or Ctrl + scroll to zoom
Every well in Greeley County, Kansas
Kansas state record, from KS_wells_ks_wells.parquet. Corpus built 2026-09-11.