Numerical modeling of cross‐well seismic monopole sensor data

We have developed a numerical technique for modeling subkilohertz seismic data acquired with a borehole hydrophone, a borehole volume source, or both, in the case of cross well data. Data acquired with such devices contain tube wave related phenomena that exist because of the borehole itself. This new technique avoids modeling the source and receiver boreholes directly, and yet models the tube wave related effects. This is done The computed line source mechanism is now used in a pre existing modeling code, overiding the normal choices of : buried point force or a buried monopole. The modeling cod1 must compute as output the wavefield at all points along the trajectory of a hypothetical receiver well.