TIME DOMAIN STACKING OF ACOUSTIC DIPOLE LWD MEASUREMENTS

Abstract: a method for acoustic logging a wellbore includes making a plurality of directional sonic logging measurements while rotating an acoustic logging tool in a wellbore. a plurality of orthogonal pairs of measurements are identified among the measurements. each of the orthogonal pairs includes a first measurement having a measured angle of a transmitter firing direction that is perpendicular with a measured angle of a transmitter firing direction of a second measurement within a predetermined tolerance. a set of 4c component waveforms is compiled for each of the identified orthogonal pairs and mathematically rotated to align with predefined axes. selected ones of the rotated waveforms are then stacked in the time domain.

Inventor(s): Denis Syresin, Naoki Sakiyama

CPC Classification: G01V1/50 (GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS (means for indicating the location of accidentally buried, e.g. snow-buried, persons ))

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