What are the important stratigraphic horizons that produce oil and gas in Kansas?
Of the approximately 5.9 billion barrels of cumulative oil production reported from Kansas, the Ordovician Arbuckle Group has accounted for approximately a third (Figure 6). The Arbuckle is followed in descending order by the various units assigned to the Missourian (Lansing-Kansas City), and the Mississippian. Taken together these three intervals account for just shy of three-quarters of the state’s cumulative oil production since the initial oil flowed in 1889. Figure 6–Kansas Production of Oil and Gas. A look at the stratigraphic distribution of oil production in 1992 shows a decrease in the dominance of oil production from the Arbuckle interval. The percentage of both Mississippian and Morrow oil production has doubled, while the contribution of Arbuckle production has halved. Together the Mississippian and the Morrow intervals accounted for approximately 50 percent of the oil produced in the state during 1992. This change in the stratigraphic distribution of oil production is the
