Hybrid streamer/sparse OBN imaging offshore Norway

Abstract

A hybrid towed streamer and ocean bottom node (OBN) survey was acquired in the summer of 2020 over the Quad 35 block offshore Norway in ~ 400m water depths. The nodes were located on a 900m x 900m square grid with infills to a 300m x 300m square grid over the Aurora and Nova fields (Figure 1.) The streamer data were acquired with triple source, partially blended, to produce an ultra-high density streamer 3D dataset. The nodes, deployed prior to the first streamer shot, recorded data continuously throughout the streamer survey, capturing data with offsets of more than 30 km. The streamer/source geometry employed was 10 x 56.25m x 8000m/3 x 75m x 10.416m generating 128-fold data in 9.375m x 6.25m bins.