... locations. The comparison was attained with respect to the variance estimation through the cross-validation procedure. It was concluded that Bayesian Kriging is more accurate prediction of formation permeability than the universal Kriging. geologic modeling geological modeling machine learning...

... Abstract In petrophysical evaluation one of the most common procedures of zoning into shale and sand layers is to use GR logs. In this study an alternative zoning approach was proposed, using the Vp/Vs log curves. First, Vp and Vs were calculated based on the sonic slowness log data (DT...

... the drilling process. The concept of this methodology was the subject of a previous publication (Zhang and Jalali, 2010); here the emphasis is on the linkage to LWD measurements. The LWD measurements used in this procedure are the bed boundary logs, which are continuous in measured depth and are obtained from...