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Full Waveform Inversion on Jackdaw Ocean Bottom Nodes Data in North SeaNormal access

Authors: K. Yoon, P. Moghaddam, I. Vlad, M. Warner and J. Sheng
Event name: 76th EAGE Conference and Exhibition 2014
Session: FWI - Case Studies
Publication date: 16 June 2014
DOI: 10.3997/2214-4609.20141417
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 2.19Mb )
Price: € 20

Summary:
A FWI workflow for Jackdaw Ocean Bottom Node (OBN) dataset is described. Small receiver coverage, large receiver crossline spacing and no well information make it challengeable to apply FWI against this dataset. Improved shallow velocities and increasing offset, depth and traveltime enable us to get high resolution shallow FWI velocity model. Source estimation using near offset direct waves is a good approach for shallow sea bottom data. Convergence of FWI was confirmed by shallow depth slices of velocity model, seismogram comparison and phase residual between observed and synthetic seismograms.


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