A New Method of Lithology Automatic Identification for Deep Giutenite Body Reservoir in Yanjia Oilfield

It is difficult to identify lithology for deep glutenite body because of different complex litholgies with vague distinctions of log responses features in Yanjia oilfield.But lithology identification is important to calculate reservoir parameters and identify oil-water layers.Based on conventional logging data,proposed is a new lithology automatic identification method(NRA) for deep glutenite reservoirs.With analyzing lithology sensitivity of log curves and removing the effect of reservoir porosity on logging curves,set up is lithology identification curves which reflect the grading variations.Carried out are lithology automatic identification of glutenite by core analysis and electro-imaging calibration.The site application shows that the new method improves the interpretation accuracy of lithology identification.