Patent ID: 9062540
Filing Date: 2015-06-23
Classification: E21B,G01V

Abstract:
1. A method of conducting logging operations in a borehole penetrating an earth formation, comprising: estimating alignment information indicative of an angular shift between at least one oriented transmitter on a bottom hole assembly (BHA) and at least one oriented receiver on the BHA using measurements of deformation of the BHA from at least one deformation sensor; using the alignment information to compensate for effects of misalignment between the at least one oriented transmitter and the at least one oriented receiver on signals generated by the at least one oriented receiver in response to energy generated by the at least one oriented transmitter, the compensation comprising applying a compensation algorithm to the signals generated by the at least one oriented receiver; and estimating at least one parameter of interest of the earth formation using the compensation, wherein the at least one deformation sensor includes at least one of: (i) a strain gauge, (ii) a transmitter oriented at a non-X, non-Z angle, (iii) a receiver oriented at a non-X, non-Z angle, (iv) a magnetometer, (v) an accelerometer, (vi) a distance sensor, (vii) an optical sensor, and (viii) an optical fiber sensor.