Journal article

Estimation of elastic anisotropy from three-component ultrasonic measurements using laser Doppler interferometry

Andrej Bona, Maxim Lebedev, Roman Pevzner, Boris Gurevich, Mahyar Madadi

Exploration Geophysics | CSIRO PUBLISHING | Published : 2018

Abstract

Ultrasonic measurements using laser Doppler interferometry (LDI) have been reported to provide robust estimates of elastic anisotropy of rock samples. In this approach, an ultrasonic wave is emitted by a piezo-electric source and detected by the LDI, which can be configured to measure three components of the particle velocity in a very small area (∼1 mm 2) of the sample. Repeating these measurements for a dense array of points on the sample's surface gives a distribution of traveltimes and polarisation fields on the surface. Anisotropy is then obtained by inverting these fields using analytical expressions or numerical algorithms for computing phase and group velocities. The existing impleme..

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University of Melbourne Researchers

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Funding Acknowledgements

The authors would like to thank the sponsors of the Curtin Reservoir Geophysics Consortium (CRGC) for their support. The authors also thank Sinem Yavuz for reviewing the manuscript and Maria Lebedeva for her help with the experiment.