Derivation and simulation of source function for acoustic logging

Abstract

By utilizing the concepts of the radiation resistance and radiation quality of harmonic vibration, both the effective force of surrounding coupling fluid on a thin spherical shell transducer during excitation by a driving-voltage signal and its transient response function can be determined by developing an equivalent circuit. The transducer acts like an electrical-acoustic filter. The properties of both driving-voltage signal and the transducer determine that of the radiated acoustic signal.