关键词: 井孔声导波, 孔隙介质, 喷射流, 频散, 衰减

Abstract: The reservoir was modeled by homogeneous two-phase media based on BISQ model, and the effects of the squirt flow on the fundamental guided waves propagating in a borehole embedded in saturated porous media excited by monopole, dipole and quadrupole point sources were studied. The curves of velocity dispersion, attenuation coefficients and excitation curves of the fundamental guided waves show that the velocity dispersions are almost independent of the characteristic squirt flow length, the attenuations of guided waves are enhanced due to the squirt flow, and excitations of guided waves are decreased due to the squirt flow.

Key words: borehole guided wave, porous medium, squirt flow, dispersion, attenuation