METHOD FOR JOINT INTERPRETATION OF MULTI-ARRAY INDUCTION ANDMULTI-COMPONENT INDUCTION MEASUREMENTS WITH JOINT DIP ANGLE ESTIMATION

摘要

Data are acquired using multi-array logging tool in a borehole having an ang le of inclination to a normal to the bedding plane of earth formations. The mul ti- array measurements are filtered using angle dependent filters to give a filtered curve corresponding to a target one of the multi-array measurements using angle dependent filters. Correlation coefficients are determined for a set of possible dip angles and a relative dip angle is estimated from the correlation coefficients. This dip angle estimate together with bed boundari es obtained from the multi-array measurements are used for inverting multi- component measurements alone or jointly with multi-array measurements to refine the relative dip angle interpretation and give horizontal and vertica l formation resistivity.