Abstract:Differences between observed and forward modelled flexural wave dispersion characteristics in cross dipole sonic logging in homogeneous formations are useful for evaluating mud invasion and for differentiating between stress-induced and fabricrelated anisotropy. In this paper we investigate the sensitivity of the dispersion effect to borehole size and mud slowness, and show the importance of taking account of the tool's mechanical properties in the forward model -particularly when the tool diameter is a substa… Show more
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