Abstract：The frequency dispersion equation of pseudo Rayleigh wave in elastic formation is presented here,and its frequency dispersion characteristics are analysed in detail.Initial point of phase velocity of each pseudo Rayleigh wave in a given condition is determined theoretically,and it is proved that there is no group velocity of pseudo Rayleigh wave at initial point.Some "fishhook" curves are also given which appear from the third group velocity curve.Theoretical deduction says that in a borehole penetrating elastic formations,pseudo Rayleigh wave does not take shear-wave ve-locity,but its group velocity may be very close to shear-wave velocity.
李鹤昇. 弹性地层井眼中伪瑞利波的群速度[J]. 石油地球物理勘探, 1997, 32(6): 826-831.
Li Hesheng. Group velocity of pseudo Rayleigh wave in the borehole penetrating elastic formations. OGP, 1997, 32(6): 826-831.
