Computer-Aided Graphics for Analysis of Cottageville Field, Jackson County, West Virginia: ABSTRACT

It has been said that the purpose of computing is insight, not numbers. In the Cottageville field, Jackson County, West Virginia, computer-aided graphics relate structure and stratigraphy to observed gas production. The Akima bivariate interpolation scheme for irregularly distributed data points provides structure and isopach contour maps or perspective three-dimensional surface displays. NCAR (National Center for Atmospheric Research) graphics software is helpful. Further insight into the Cottageville field is obtained by use of open-flow and production data from the lower Huron Member of the Ohio Shale. These data are converted to graphics quickly displayed on a cathode-ray tube terminal followed by output on a 36-in. (91.4 cm) matrix plotter or a color-microfilm recorder. This method makes it possible to reject or recheck spurious data points or modify previous computations. Correlation using three-dimensional isometric histograms, gray intensity shading, and color blending is useful. End_of_Article - Last_Page 1585------------