Publication Name: Australasian Exploration Geoscience Conference 2019
Authors: Mehdi Asgharzadeh*, Ashley Grant, Andrej Bona, Milovan Urosevic
Date Published: September 2019
Number of Pages: 4
Abstract:
Acoustic signal generated by drill bit cutting action in the borehole can be recorded passively by geophones on the surface and used to produce an image of the subsurface under the geophone array. A single pilot trace is commonly recorded on the drill string and used to convert geophone recordings to equivalent reverse vertical seismic profile data. If there is no pilot measurements on the drill string, seismic interferometry can be used to move continuous sources of energy from the bottom of the borehole to the surface and use conventional seismic methods to image the subsurface.