Kriging Prediction Of Coal Reservoir Permeability

This article accord to Jincheng area as the main study area, which is located in thesouthern Qinshui Basin, it outlines the regional geology, the main coal-bearing strata of thesedimentary characteristics, reservoir characteristics of coal and coal seam reservoirproperties and permeability of the impact factors. It is based of C programming to establishkriging model, at the same time, checking the study area the various factors of thepermeability of coal seam as a parameter, using the actual measured data, to calculateordinary kriging, indicator kriging and co-kriging method. Kriging not only takes into accountthe parameters of the space between the continuity and relevance, but also considers the trend,space and direction of geological parameter and the interdependence of parameters. It is betterto deliverance of variation of reservoir porosity and permeability. The results show: theaverage relative error of co-kriging is small than ordinary kriging, indicator kriging which is92.74% of ordinary kriging, 53.67% of indicator Kriging and 31.74% of co-kriging. Finally,we use co-kriging predicted penetration to draw contour map of Jincheng, it consists of thetrend of permeability control of the study area and has a better application.