97/02232 Experience and developments in the injection of gases and coal into the Q.S.L. reactor at Onsan, Korea

Abstract

Oil production in the Nichols Field, located in south-central Kiowa County, Kansas was discovered by Gulf Oil Corp. in 1956. The oil-producing zone, which lies on the crests and flanks of a southwest-plunging anticlinal nose, is formed by an updip stratigraphic pinchout of the Mississippian “chat” chert breccias underlying the post-Mississippian erosion surface. The field has a well-defined gas cap and an oil column.Maps of third-degree trend surfaces using data from 170 wells and constructed on top of the Mississippian “chat”, the Pennsylvanian brown lime, and Pennsylvanian Stotler Formation clearly define the anticlinal structure. The elevation to the tops of these units in an additional 17 wells recently drilled on the basis of detailed subsurface geology could have been predicted with reasonable confidence using the coefficients of the trend-surface equations alone.The 17 additional wells were used to test the hypothesis that trend-surface residuals of the shallower units can be used to predict whether the deeper unit tops will be encountered “higher” or “lower” than the projected regional elevations based on their trend values. Because it could be shown that the trend and residual maps of the three units are similar, predicted departures from observed departures matched in most instances.