... ABSTRACT Sing-well shear-wave reflection survey using a dipole acoustic source has recently emerged as an effective application technology to image geological structures away from borehole. The reflected wavefield is strongly influenced by the radiation characteristic of the borehole acoustic...

... field that was used for VS creation. We can optimize the radiation characteristics by spatial deconvolution with the estimated radiation pattern. Another strategy is to apply time-gating to the downgoing wave field, as is commonly applied in the current best practice of the VS method. We offer...