A Robust Broadband Deghosting Procedure for High Resolution Outcomes
By Gaby Yelin
Whenever a source and receiver are positioned below a strong velocity contrast, ghost reflections are generated. This is manifested as notches in the frequency domain and loss of low frequencies.
The reflection ghost problem has been known since the early days of marine acquisition. In spite of many advances in technology and acquisition configurations aimed at improving the frequency spectrum which deteriorates due to the presence of ghost reflections, the low resolution component of the spectrum is still missing. In recent years this topic has become of major interest due to FWI, where recovering low frequencies is crucial.
In this lecture we will present our Deghosting solution, we will explain the methodology, and compare the results to different acquisition techniques.