Thunder Horse Ocean-Bottom Nodes acquisition design

Improved imaging at Thunder Horse South with joint surface and borehole seismic tomography

“…The 2015 acquisition of a large ocean-bottom node (OBN) survey (Chakraborty et al, 2017) created a new opportunity to revise and fine-tune the existent earth model by incorporating not only the newly acquired surface seismic data, but also all legacy vertical seismic profile (VSP) surveys and well-depth markers in a joint common image point (CIP) tomography (Woodward et al, 2008) model updating scheme. We first present the necessary quality control and data preparation steps required to ensure that the different data sets to be used in joint tomographic inversion carry the same information in regard to the earth model properties.…”