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A Simple Method to Estimate Shear-Wave VelocityNormal access

Authors: Z.Y. Zhou, Y.J. Hao, Y.Q. Liu and H.D. Huang
Event name: 80th EAGE Conference and Exhibition 2018
Session: Poster: Rock Physics B - Theory
Publication date: 11 June 2018
DOI: 10.3997/2214-4609.201800875
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 832.4Kb )
Price: € 20

Summary:
Shear-wave velocity logs are useful for various seismic applications, including prestack inversion, amplitude-versus-offset analyses and fluid substitution. However, measured shear-wave logs are often unavailable, especially for some old fields. In this paper, we extended the method proposed by Sabrina to estimate shear-wave velocity. The key point of this extended method is to calculate pore compliance parameters , which depend mainly on pore shape, pore compliance and pore fluid. Then pore compliance parameters are used to calculate saturated shear modulus and predict shear-wave velocity. After verifying this method with measured values in clastic and carbonate rocks, we find that shear-wave velocity estimated by extended method is more consistent with measured value than that predicted by conventional method.


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