Southwest Kansas is situated between two regional structural features. They are the Sierra Grande uplift-Buried Amarillo Mountain trend on the southwest and the Central Kansas uplift on the northeast. Mississippian rocks are absent on both features. The Mississippian thickens to 1,800 feet between these features in what is called the Anadarko basin.

The Mississippian system consists of four series. All four produce gas and (or) oil somewhere in southwest Kansas. There are seven major Mississippian pools in the area. They range in size from 18 to 56 gas wells and 41 to 239 oil wells. There are many other commercial pools.

The Mississippian produces from both stratigraphic and structural traps. Developmental drilling has revealed 220 feet of structural relief between 40-acre locations, which is the first indication of faulting in the area. Pool studies reveal an erratic occurrence of sands in the basal Chester, a new objective.

The Mississippian is still in the pioneer stage of exploration. More major pools will be discovered.

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