... approach matches both sand and shale sequences as well as formations where limestone and dolomite exist. Introduction During the past years, formation evaluation methods have been developed using log data for lithological determination. Well logs give a continuous survey of the formation crossed...

... associated with inclined heterolithic stratification.cause abrupt lateral and vertical variability in the flow path for reservoir fluids. This brings in the need for examining these facies variation using high resolution FMI* (Formation micro imager) log data which often mimics conventional core facies...

... in modern reservoir characterization. Among other things, well log data provide a measure of porosity and the volume fraction of shale. The porosity data can be used directly, but when permeability measurements are sparse, permeability must be based on the combined spatial characteristics of the shale...

... that the clay morphology of the highest air permeability is predominantly the discrete particle. Dispersed clay morphology for samples in the intermediate air permeability range is predominantly of a pore-lining variety. log data log analysis resistivity fluid dynamics vertical permeability water...