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 gathering and recording using small bins lattice on execution of arranging electrodes, each acquisition station (Ex, Ey) gathering and recording natural electromagnetic field time series data with the same acquisition parameter simultaneously, processing the data recorded to remove the interference first, and obtaining observation data that have no interference, for border points and center point, using the recording point as center, adding the same component from adjacent two points to total points respectively to obtain the average values on time domain electric field data of all observation points; for angular points, calculating the average values of the same electric field component from adjacent two points to total observation points toward bin direction; serving the electric field components obtained in maximum space as the new observation field values respectively; obtaining new time series data in which the noise and the static displacement effect having been suppressed, and obtaining apparent resistivity and phase curves of each point after processing by conventional method.