3D OBC Seismic Survey Design Offshore Abu Dhabi - with Focal Beam Approach

Abstract

AbstractWe introduce a 3D ocean bottom cable (OBC) seismic survey design flow with the so-called focal beam method for finding the optimum acquisition geometry to satisfy geophysical requirements. This method is based on the so-called common focus point (CFP) technology, and it is a subsurface oriented and target oriented approach, making it possible to quantitatively analyze sought-after attributes, such as potential resolution and pre-stack amplitude fidelity, for one or more gridpoints in the subsurface of a given acquisition geometry.We implemented the survey design flow offshore Abu Dhabi with several acquisition geometries to understand the effects of essential survey parameters, like 4D spatial sampling intervals with and without symmetric sampling, aspect ratio, roll pattern and wave type to be recorded, on the sought-after attributes. Summarizing these results, the relationship between essential survey parameters and resulting data quality was well understood.