Time-jittered ocean bottom seismic acquisition

TitleTime-jittered ocean bottom seismic acquisition
Publication TypeConference
Year of Publication2013
AuthorsHaneet Wason, Felix J. Herrmann
Conference NameSEG Technical Program Expanded Abstracts
KeywordsAcquisition, blending, deblending, interpolation, jittered sampling, marine, OBC, SEG

Leveraging ideas from the field of compressed sensing, we show how simultaneous or blended acquisition can be setup as a – compressed sensing problem. This helps us to design a pragmatic time-jittered marine acquisition scheme where multiple source vessels sail across an ocean-bottom array firing airguns at – jittered source locations and instances in time, resulting in better spatial sampling, and speedup acquisition. Furthermore, we can significantly impact the reconstruction quality of conventional seismic data (from jittered data) and demonstrate successful recovery by sparsity promotion. In contrast to random (under)sampling, acquisition via jittered (under)sampling helps in controlling the maximum gap size, which is a practical requirement of wavefield reconstruction with localized sparsifying transforms. Results are illustrated with simulations of time-jittered marine acquisition, which translates to jittered source locations for a given speed of the source vessel, for two source vessels.

Citation Keywason2013SEGtjo