TopSeis images carbonate reservoir in the Barents Sea for Lundin
CGG has completed acquisition of its first full-scale commercial survey using the TopSeis offshore broadband seismic acquisition and imaging system.
Conventional broadband methods had failed to resolve issues with imaging these types of targets, CGG claimed.
TopSeis deploys seismic sources directly above the streamers in a “split-spread” acquisition geometry, providing the zero-offset and near-offset coverage that is missing from conventional 3D towed-streamer seismic.
CGG expects the subsequent processing to achieve a major improvement in the imaging of shallow-to-intermediate depth targets.
Halvor Jahre, exploration manager, Lundin Norway, said: “One unexpected benefit we have already seen is that the TopSeis water bottom resolution is unprecedented for seismic acquisition and is comparable with existing multi-beam sonar data.”