Abstract
In the processing of marine streamer seismic data, free surface multiples are generally treated as noise and removed before migration. However, valuable information may be hidden in the multiple wavefield that can be beneficial to seismic processing and imaging. To discover its potential, we modify the conventional reverse time migration (RTM) algorithm to utilize both the primary wavefield and the multiple wavefield. We name our migration approach Reverse Time Multiple Migration (RTMM). In this paper, we demonstrate that RTMM has a wider and more balanced source illumination power compared to conventional RTM. We then illustrate that RTMM can provide a precise water bottom horizon, which is critical for model-based demultiple techniques. We also show that RTMM can produce a complementary image to conventional RTM, where shallow sediment and portions of the salt structure are better imaged. In the end, we demonstrate a cost effective way to separate crosstalk noise from true signal. We divide RTMM output into azimuth and offset dependent sectors and apply a nonlinear stacking algorithm to attenuate crosstalk noise
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
