Print this pageHydrocarbon Production from Low Resistivity, Mississippian Chert and Carbonate Reservoirs in Kansas
MULLARKEY, JAMES C., WILLIAM M. COLLEARY, EDWARD D. DOLLY, and MARK W. LONGMAN
Wireline log examples of oil and gas production from perforated reservoirs with resistivities between 1 and 8 ohm-meters in Barber, Kiowa, and Rice Counties, Kansas are presented. The Mississippian Chat fields used as examples of low resistivity reservoirs have cumulative production totaling over 362 BCF of natural gas and 6.9 MMBO. The regional stratigraphy of the Mississippian Pennsylvanian unconformity and potential extent of this production is examined. The lithology and the log responses of the example wells are compared and contrasted. Causes of the low resistivity include very high porosities, bound water in (chert) microporosity as well as in chalky, slightly weathered chert, and fine intercrystalline porosity (microporosity) in dolomite.