4,541 wells on file. Open this county on the map.
Depth range is measured from the wells on file, not a regional average.
| Formation | Wells | Producing | Shallowest | Average | Deepest | Cumulative |
|---|---|---|---|---|---|---|
| Mississippian | 1,052 | 40 | 1,300 ft | 2,493 ft | 3,866 ft | — |
| Viola Limestone | 346 | 7 | 2,110 ft | 2,772 ft | 3,475 ft | — |
| Hunton Group | 200 | 20 | 2,235 ft | 2,720 ft | 3,645 ft | — |
| Arbuckle Group | 162 | 5 | 2,283 ft | 3,096 ft | 3,715 ft | — |
| Simpson Group Lower | 148 | 1 | 2,370 ft | 3,044 ft | 3,530 ft | — |
| Mississippian Chat | 50 | 1 | 2,267 ft | 2,448 ft | 3,050 ft | — |
| Kinderhookian | 40 | 0 | 2,238 ft | 2,524 ft | 3,352 ft | — |
| Hunton | 40 | 11 | 2,354 ft | 2,717 ft | 4,613 ft | — |
| Arbuckle | 35 | 4 | 2,610 ft | 3,060 ft | 3,866 ft | — |
| Admire Group | 28 | 0 | 577 ft | 636 ft | 800 ft | — |
| Simpson | 27 | 2 | 2,802 ft | 3,285 ft | 3,670 ft | — |
| Viola | 27 | 7 | 2,439 ft | 2,905 ft | 3,393 ft | — |
| Mississippi | 27 | 2 | 2,385 ft | 2,657 ft | 3,440 ft | — |
| Maquoketa Shale | 22 | 0 | 2,450 ft | 3,006 ft | 3,415 ft | — |
| Ordovician System | 20 | 0 | 2,348 ft | 3,003 ft | 3,478 ft | — |
| Mississippian System | 14 | 5 | 2,380 ft | 2,657 ft | 3,478 ft | — |
| Pennsylvanian System | 9 | 2 | 1,200 ft | 1,954 ft | 2,417 ft | — |
| Lansing Group | 8 | 0 | 1,675 ft | 1,979 ft | 2,545 ft | — |
| Severy | 7 | 0 | 1,202 ft | 1,238 ft | 1,260 ft | — |
| Xmississippi | 7 | 0 | 2,240 ft | 2,614 ft | 2,919 ft | — |
| Hunton, Viola | 7 | 4 | 2,534 ft | 2,584 ft | 2,745 ft | — |
| Wabaunsee Group | 5 | 0 | 1,188 ft | 1,266 ft | 1,440 ft | — |
| Mississippi, Simpson | 4 | 1 | 3,470 ft | 3,470 ft | 3,470 ft | — |
| Precambrian System | 3 | 0 | 3,090 ft | 3,116 ft | 3,147 ft | — |
| Mississippian Chert | 3 | 0 | 2,306 ft | 2,363 ft | 2,475 ft | — |
| Shawnee Group | 3 | 0 | 1,180 ft | 1,212 ft | 1,230 ft | — |
| Mississippi, Simpson, Viola | 2 | 0 | 3,051 ft | 3,051 ft | 3,051 ft | — |
| Permian System | 2 | 0 | 900 ft | 1,052 ft | 1,204 ft | — |
| Douglas Group | 2 | 0 | 1,664 ft | 2,479 ft | 3,293 ft | — |
| Hntn | 2 | 1 | 2,839 ft | 2,840 ft | 2,840 ft | — |
| Ireland | 2 | 0 | 1,655 ft | 1,655 ft | 1,655 ft | — |
| Cretaceous System | 2 | 0 | 165 ft | 187 ft | 208 ft | — |
| Viola Limestone Formation | 2 | 0 | 2,589 ft | 2,876 ft | 3,163 ft | — |
| Mississippi Chat | 2 | 1 | 2,220 ft | 2,328 ft | 2,436 ft | — |
| Wilcox | 2 | 0 | 2,895 ft | 3,041 ft | 3,186 ft | — |
| Misener Sandstone | 2 | 0 | 2,308 ft | 2,412 ft | 2,516 ft | — |
| Middle Mississippian (osage) | 2 | 0 | 2,346 ft | 2,391 ft | 2,435 ft | — |
| Kansas City Group | 2 | 1 | 1,852 ft | 1,999 ft | 2,145 ft | — |
| Simpson 1 | 1 | 0 | 3,283 ft | 3,283 ft | 3,283 ft | — |
| Stray Zone B | 1 | 0 | 2,260 ft | 2,260 ft | 2,260 ft | — |
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