method for making directional well resistivity measurement, and downhole measurement tool

摘要

method for making a directional resistivity measurement in a well, and a downhole measurement tool a method (200) for making directional resistivity measurements and forming a directional resistivity image of an underground formation (42, 44, 46), includes processing (206) a plurality of directional resistivity measurements and corresponding azimuth angles, to calculate a first order harmonic representation at selected azimuth angles. a two-dimensional image of the well can be formed by repeating the procedure at various depths measured in the well (40).