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Sponsored by the Center for Science and Technology Development of the Ministry of Education
Supervised by Ministry of Education of the People's Republic of China
In this paper, the reservoir is modeled by homogeneous two-phase media based on
BISQ model. We focus on the effects of the squirt flow on the fundamental guided
waves propagation in borehole embedded in saturated porous media excited by
monopole, dipole and quadrupole point sources. The full waveforms acoustic logging in
a fluid-filled borehole are simulated. The curves of velocity dispersion, attenuation
coefficients and excitation of the fundamental guided waves have shown that velocity
dispersions are almost independent of the characteristic squirt flow length, attenuations
of guided waves are enhanced due to the squirt flow, and excitations of guided waves
are decreased due to the squirt flow. It is possible to estimate the characteristic squirt
flow length by attenuation coefficients of the guided waves from acoustical logging data.