Deconvolution interferometry and its application to seismic while drilling data processing

Seismic While Drilling(SWD)is a new technology applied in the field of petroleum.It uses the continuous random vibration to make bit forecast by cross-correlation between the source function of thousands meters underground and the wave recorded on the surface.The key issue of the SWD is how to obtain the seismic source function at such a depth which blocks the wide application of SWD.The deconvolution interferometry,developed based on cross-correlation,is another technology that can be used in SWD.It doesn't need the source function and can derive the Green's function of station pairs by the ambient noise,and image the structure and velocity property of the subsurface.It can eliminate the effects of the source and get good image result.This paper reviews the developments of the deconvolution interferometry,and analyzes the theory and characters of the cross-correlation and deconvolution interferometry.With an example of deconvolution interferometry application to the SWD data processing,it demonstrates the great potential of deconvolution interferometry in SWD,and provides important information for new technology developments of SWD.