Abstract
Marine 3D wide-azimuth towed streamer acquisition methods have provided signifiant improvments in seismic imaging of deep water sub-salt reservoirs in the Gulf of Mexico. The intial surveys were designed to provide very dense trace sampling. Subsequent to these successful field specific surveys, wide-azimuth acquisition designs have been developed to allow cost effective use of the technique over large areas for exploration objectives. This paper will describe a “sparse” acquisition configuration that has been derived from the source / receiver geometry used on the Mad Dog survey for BP. This design allows a full suite of data densities from the initial first pass for the exploration objectives to successively appended additional data acquired through the appraisal and management phases of field development.
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