BEAMFORM PROCESSING FOR SONIC IMAGING USING MONOPOLE AND DIPOLE SOURCES

BEAMFORM PROCESSING FOR SONIC IMAGING USING MONOPOLE AND DIPOLE SOURCES

Embodiments provide for a method that utilizes the azimuthally spaced receivers of a sonic logging tool. Signals from monopole and dipole sources are reflected from the geologic interfaces and recorded by arrays of receivers of the same tool. For the incident P-waves from the monopole source, phase...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Johansen, Asbjoern Lund, Donald, John Adam, Hirabayashi, Nobuyasu, Karpekin, Yevgeniy, Endo, Takeshi, Bennett, Nicholas Norman
Format: Patent
Sprache:eng
Schlagworte:
DETECTING MASSES OR OBJECTS
GEOPHYSICS
GRAVITATIONAL MEASUREMENTS
MEASURING
PHYSICS
TESTING
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Beschreibung
Zusammenfassung:Embodiments provide for a method that utilizes the azimuthally spaced receivers of a sonic logging tool. Signals from monopole and dipole sources are reflected from the geologic interfaces and recorded by arrays of receivers of the same tool. For the incident P-waves from the monopole source, phase arrival times for the azimuthal receivers are compensated for stacking using properties of wave propagation in the borehole, and for the incident SH-waves from the dipole source, signs of waveforms for the receivers are changed for specified azimuths.