William Mast Unit 'B' 3
API 15189212410000 · Stevens County, Kansas · CAVE WEST field
Producing
API
15189212410000
Operator
Edison Operating Company LLC
County
Stevens
Field
CAVE WEST
Location
Spudded
1988-09-12
Completed
1988-10-04
Measured depth
6,200 ft
Formation tops
Kansas records 70 formations for this well, shallowest first.
| Formation | Top (ft) | Base (ft) | Picks |
|---|---|---|---|
| Stone Corral Formation | — | 1,790 | 1 |
| Wellington Formation | 2,213 | — | 1 |
| Hutchinson Salt Member | 2,328 | — | 1 |
| Hollenberg Limestone Member | 2,570 | — | 1 |
| Chase Group | 2,590 | — | 1 |
| Herington Limestone Member | 2,590 | — | 1 |
| Paddock Shale Member | 2,616 | — | 1 |
| Krider Limestone Member | 2,623 | — | 1 |
| Odell Shale Formation | 2,654 | — | 1 |
| Winfield Limestone Formation | 2,669 | — | 1 |
| Gage Shale Member | 2,700 | — | 1 |
| Towanda Limestone Member | 2,717 | 2,773 | 1 |
| Fort Riley Limestone Member | 2,783 | 2,834 | 1 |
| Florence Limestone Member | 2,837 | — | 1 |
| Matfield Shale Formation | 2,853 | — | 1 |
| Wreford Limestone Formation | 2,873 | — | 1 |
| Council Grove Group | 2,896 | — | 1 |
| Speiser Shale Formation | 2,896 | — | 1 |
| Funston Formation | 2,919 | — | 1 |
| Blue Rapids Shale Formation | 2,958 | — | 1 |
| Crouse Limestone Formation | 2,970 | — | 1 |
| Easly Creek Shale Formation | 2,987 | — | 1 |
| Middleburg Limestone Member | 2,995 | — | 1 |
| Hooser Shale Member | 3,008 | — | 1 |
| Eiss Limestone Member | 3,019 | — | 1 |
| Stearns Shale Formation | 3,026 | — | 1 |
| Morrill Limestone Member | 3,034 | — | 1 |
| Florena Shale Member | 3,040 | — | 1 |
| Cottonwood Limestone Member | 3,049 | — | 1 |
| Eskridge Shale Formation | 3,073 | — | 1 |
| Neva Limestone Member | 3,091 | 3,110 | 2 |
| Roca Shale Formation | 3,150 | — | 1 |
| Howe Limestone Member | 3,164 | — | 1 |
| Johnson Shale Formation | 3,195 | — | 1 |
| Long Creek Limestone Member | 3,205 | — | 1 |
| Janesville Shale Formation | 3,226 | — | 1 |
| Falls City Limestone Formation | 3,251 | — | 1 |
| Onaga Shale Formation | 3,260 | — | 1 |
| Wabaunsee Group | 3,300–3,370 | — | 5 |
| Wood Siding Formation | 3,370 | — | 1 |
| Root Shale Formation | 3,445 | 3,476 | 2 |
| Stotler Limestone Formation | 3,454 | — | 1 |
| Red Shale Bed | 3,582 | — | 1 |
| Severy Shale Formation | 3,669 | — | 1 |
| Shawnee Group | 3,681 | — | 1 |
| Topeka Limestone Formation | 3,681–3,757 | — | 2 |
| Heebner Shale Member | 4,094–4,118 | — | 4 |
| Toronto Limestone Member | 4,138 | — | 1 |
| Douglas Group | 4,150 | — | 1 |
| Iatan Limestone Member | 4,184 | — | 1 |
| Lansing Group | 4,184–4,236 | — | 5 |
| Stanton Limestone Formation | 4,237 | — | 1 |
| Bonner Springs Shale Member | 4,321 | — | 1 |
| Kansas City Group | 4,504 | — | 2 |
| Iola Limestone Formation | — | 4,514 | 1 |
| Hushpuckney Shale Member | 4,795 | — | 1 |
| Hertha Limestone Formation | — | 4,834 | 1 |
| Lenapah Limestone Formation | 4,887 | — | 1 |
| Cherokee Group | 5,100 | — | 2 |
| Excello Shale Member | 5,101 | — | 1 |
| Atokan Stage | 5,332 | — | 1 |
| Marmaton Group | 5,497 | — | 2 |
| Middle Morrowan Limestone Bed | 5,497 | — | 2 |
| Morrowan Stage | 5,498 | — | 1 |
| Chesteran Stage | 5,802–5,812 | — | 3 |
| Mississippian System | 5,802–5,812 | — | 3 |
| Ste. Genevieve Limestone Formation | 6,052 | — | 3 |
| St. Louis Limestone Formation | 6,112 | — | 2 |
| Base Penn Conglomerate | — | — | 1 |
| Upper 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. 6 formations were picked at more than one depth by different Kansas sources, and their range is shown rather than one of the answers.
Location
37.340528, -101.180374
37.34053, -101.18037 · Surface location as filed with Kansas⌘ or Ctrl + scroll to zoom
Every well in Stevens County, Kansas
Kansas state record, from KS_wells_ks_wells.parquet. Corpus built 2026-09-11.