Apparatus and method for determination of far-field signature from variable-depth seismic data

摘要

#$%^&*AU2014201063A120140918.pdf#####1000523901 ABSTRACT Computing device, system and method for calculating an estimate far-field signature (FE) of a seismic source. The method includes receiving seismic data collected with seismic sensors having a variable-depth distribution so that ghost diversity is present; stacking the seismic data at the sea floor; calculating in a processor the estimate far-field signature (F) based on a ghost period (ti) and a relative amplitude (yj) of two traces from the seismic data; and generating a final image of sub-surface based on the estimate far-field signature (FF).2/8 Figure 2 200 Receive Seismic Data 202 Flatten, Stack Identify Travel Time of Ghost Set Model r208 Estimate Travel Time of Ghost (-210 Relative Amplitude Determination r212 Deghost Far-Field Use Deghost Far-Field for Processing Generate Final Image