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|Title:||Generalized poroviscoelastic model based on effective Biot theory and its application to borehole guided wave analysis|
|Citation:||Geophysical Journal International, 2016; 207(3):1472-1483|
|Publisher:||Oxford University Press|
|Xu Liu, Stewart Greenhalgh, Bing Zhou and Graham Heinson|
|Abstract:||A method using modified attenuation factor function is suggested to determine the parameters of the generalized Zener model approximating the attenuation factor function. This method is applied to constitute the poroviscoelastic model based on the effective Biot theory which considers the attenuative solid frame of reservoir. In the poroviscoelastic model, frequency-dependent bulk modulus and shear modulus of solid frame are represented by generalized Zener models. As an application, the borehole logging dispersion equations from Biot theory are extended to include effects from the intrinsic body attenuation in formation media in full-frequency range. The velocity dispersions of borehole guided waves are calculated to investigate the influence from attenuative bore fluid, attenuative solid frame of the formation and impermeable bore wall.|
|Keywords:||Permeability and porosity; elasticity and anelasticity; guided waves|
|Rights:||© The Authors 2016. Published by Oxford University Press on behalf of The Royal Astronomical Society.|
|Appears in Collections:||Geology & Geophysics publications|
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