Below is the oil production from the Wherry field between 1966 and the present. As you can see their is a lot of oil here. Consider how many wells there were in 2010 and divide it into the total production. There are some monster wells out there.
The Kansas Geological Survey is publicly available information. Have a look at it and see how much oil has been produced in the Welch Bornholdt as well. Lots.
Wherry--Oil and Gas Production
Additional information on this field is available in the Digital Petroleum Atlas Discovery currently listed: Operator: Lease: , Well Location: 21S-7W: 11 Discovery Date: 01/01/1933 Producing zone:
Counties: Rice View Field Boundary Leases and Wells: View Production by Lease for this Field || View Wells Assigned to this Field Producing Formations Name Depth (ft.) Thickness (ft.) Oil Grav Produces Temperature LANSING-KANSAS CITY 2900 131 - Oil - PENN. CONGL. 3358 22 - Oil - MISSISSIPPIAN 3374 22 - Oil -