A Simple Method to Estimate Shear-Wave Velocity
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
Info: Extended abstract, PDF ( 832.4Kb )
Price: € 20
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.