THREE DIMENSIONAL SMALL BINS ELECTROMAGNETIC CONSECUTIVE ARRAY DATA ACQUISITION METHOD

摘要

Three dimensional small bins electromagnetic consecutive array data acquisition method in oil exploration, the steps are, when recording data using small bins lattice on execution of arranging electrodes, each acquisition station (Ex, Ey) records the natural electromagnetic field time series data with the same acquisition parameter simultaneously; interference is removed first, for recorded data processing to get interference-free data; for border points and center point, the recording point serves as center point, and the same component from adjacent two points to total points area added together to obtain the average value of electric field data at time domain for each observation points; for corner points, the average values of the same electric field component from adjacent two points to total survey points toward bin direction is calculated; the electric filed components obtained in maximum space serves as the new electric field values respectively; new time series data is obtained in which the noise and the static shift effect have been suppressed, and apparent resistivity and phase curves of each point are obtained after processing with conventional method.