3,961 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 | 611 | 14 | 656 ft | 3,191 ft | 4,221 ft | — |
| Arbuckle Group | 399 | 3 | 1,392 ft | 3,675 ft | 4,677 ft | — |
| Simpson Group Lower | 303 | 5 | 2,920 ft | 3,743 ft | 4,465 ft | — |
| Burgess Sand | 148 | 2 | 2,810 ft | 2,958 ft | 3,078 ft | — |
| Dolomite | 89 | 0 | 2,870 ft | 3,179 ft | 3,380 ft | — |
| Hunton Group | 66 | 3 | 3,012 ft | 3,351 ft | 3,579 ft | — |
| Viola Limestone | 61 | 1 | 421 ft | 3,352 ft | 4,130 ft | — |
| Kansas City Group | 39 | 0 | 2,486 ft | 2,936 ft | 4,306 ft | — |
| Simpson | 39 | 7 | 2,634 ft | 3,662 ft | 4,358 ft | — |
| Arbuckle | 39 | 1 | 1,009 ft | 3,445 ft | 4,466 ft | — |
| Pennsylvanian System | 29 | 1 | 2,320 ft | 2,889 ft | 4,303 ft | — |
| Ordovician System | 28 | 1 | 3,200 ft | 3,626 ft | 4,500 ft | — |
| Mississippian Chert | 22 | 0 | 2,803 ft | 2,906 ft | 3,147 ft | — |
| Middle Mississippian (osage) | 14 | 0 | 2,851 ft | 3,153 ft | 3,360 ft | — |
| Mississippian System | 12 | 4 | 2,869 ft | 3,376 ft | 3,970 ft | — |
| Hunton | 12 | 1 | 3,171 ft | 3,420 ft | 3,860 ft | — |
| Misener Sandstone | 11 | 0 | 3,300 ft | 3,369 ft | 3,678 ft | — |
| Lansing Group | 11 | 0 | 2,180 ft | 2,660 ft | 3,378 ft | — |
| Kinderhookian | 8 | 0 | 3,160 ft | 3,500 ft | 4,410 ft | — |
| Viola | 6 | 1 | 3,148 ft | 3,358 ft | 3,526 ft | — |
| Wilcox | 6 | 0 | 3,099 ft | 3,503 ft | 4,133 ft | — |
| Blackwater Creek | 5 | 0 | 2,764 ft | 2,799 ft | 2,900 ft | — |
| Mississippi | 5 | 0 | 2,889 ft | 3,175 ft | 3,412 ft | — |
| Burgess | 5 | 1 | 2,852 ft | 3,016 ft | 3,290 ft | — |
| Stalnaker | 4 | 0 | 2,180 ft | 2,412 ft | 2,963 ft | — |
| Precambrian System | 4 | 0 | 3,501 ft | 3,831 ft | 4,141 ft | — |
| Wellington | 3 | 0 | 300 ft | 1,373 ft | 3,329 ft | — |
| Trenton | 3 | 0 | 3,163 ft | 3,178 ft | 3,206 ft | — |
| Maquoketa Shale | 3 | 0 | 3,451 ft | 3,503 ft | 3,608 ft | — |
| Simpson Group | 3 | 0 | 3,489 ft | 3,779 ft | 4,350 ft | — |
| Cherokee Group | 3 | 0 | 2,890 ft | 2,947 ft | 3,037 ft | — |
| Tomlin | 2 | 0 | 3,025 ft | 3,069 ft | 3,112 ft | — |
| Permian System | 2 | 0 | 200 ft | 647 ft | 1,093 ft | — |
| Simpson Group Sandstone | 2 | 0 | 3,384 ft | 3,392 ft | 3,399 ft | — |
| Chat | 2 | 0 | 2,962 ft | 2,985 ft | 3,008 ft | — |
| Black Shale | 2 | 0 | 2,693 ft | 2,904 ft | 3,115 ft | — |
| Wea Shale | 1 | 0 | 4,453 ft | 4,453 ft | 4,453 ft | — |
| Xmississippi | 1 | 0 | 3,223 ft | 3,223 ft | 3,223 ft | — |
| Shawnee Group | 1 | 0 | 1,975 ft | 1,975 ft | 1,975 ft | — |
| Sand | 1 | 0 | 1,168 ft | 1,168 ft | 1,168 ft | — |
| Operator | Wells | Producing | Latest spud | Cumulative |
|---|---|---|---|---|
| E. H. Adair Oil CO. | 138 | 0 | Mar 1968 | — |
| Kansas Gas Service | 111 | 0 | Sep 2020 | — |
| Chevron Usa, Inc. | 71 | 0 | Apr 1965 | — |
| John P. Gaty | 62 | 0 | Sep 1960 | — |
| Shawver & Armour | 62 | 0 | Apr 1966 | — |
| Lachenmayr Oil LLC | 52 | 17 | May 2015 | — |
| Bear Petroleum, LLC | 51 | 8 | Nov 2024 | — |
| J P Gaty | 45 | 0 | Dec 1959 | — |
| O A Sutton | 43 | 0 | Oct 1975 | — |
| Petroleum INC | 43 | 0 | Mar 1983 | — |
| Gulf Oil Corporation (4519) | 38 | 0 | Mar 1961 | — |
| Shell Petroleum Corporation | 34 | 0 | Apr 1943 | — |
| Gaty J P | 28 | 0 | Oct 1962 | — |
| Kewanee Oil CO | 26 | 0 | Aug 1977 | — |
| Sutton O A | 26 | 0 | Apr 1960 | — |
| Laura Jane Oil CO | 25 | 0 | Mar 1957 | — |
| Beech Aircraft Corporation | 22 | 0 | May 1975 | — |
| W. D. Short Oil CO. | 21 | 0 | Jan 1983 | — |
| E B Shawver | 19 | 0 | Dec 1951 | — |
| Brandt Production Company, Inc. | 18 | 0 | Dec 1990 | — |
| Raymond Francis M | 18 | 0 | Feb 1956 | — |
| Raymond Oil Co., Inc. | 17 | 0 | May 1979 | — |
| Cities Service Oil CO | 16 | 0 | Mar 1957 | — |
| Derby Oil CO. | 16 | 0 | May 1936 | — |
| Donald C Slawson | 15 | 0 | Nov 1985 | — |
| Hg Oil Holdings, LLC | 15 | 11 | Jul 2011 | — |
| Magnolia Petroleum CO. | 15 | 0 | Aug 1937 | — |
| Shawver - Armour, Inc. | 15 | 0 | Apr 1965 | — |
| Kewanee Oil CO. | 14 | 0 | May 1958 | — |
| Raymond Francis | 14 | 0 | Sep 1955 | — |
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