Deblending of Triple Vessel Sparse OBN Data in Deepwater Gulf of Mexico

Summary In complex environments such as deep-water subsalt settings, it has become common to acquire ocean bottom node surveys, with these type of surveys providing full-azimuth, long-offset data that can be utilised to improve the earth model in the area and reduce uncertainty. A large, exploration-scale OBN survey was acquired in the Mississippi Canyon and Atwater Valley areas of the Gulf of Mexico. To acquire these data in an efficient manner, simultaneous-source shooting utilising three source vessels was used. In this case study, we show the results of deblending using a sparse inversion scheme to achieve OBN data that provide a complementary product to the existing wide-azimuth seismic data over the area