Taking an integrated approach to seismic exploration

In 2014 Petroleum Geo-Services (PGS) began a large, integrated 2-D geosciences project with the aim of increasing the geological understanding of the Angolan and Namibian offshore margins. The project employed an integrated approach using regional 2-D interpretation, gravity and magnetics, and quantitative seismic interpretation to achieve this aim. Seismic acquisition took place offshore Angola in 2011 and offshore Namibia in 2013. Both datasets were acquired using PGS' dual-source GeoStreamer and GeoStreamer with GeoSource, respectively. The true broadband nature of this type of acquisition system allows a superior seismic image, providing broader frequencies across the amplitude spectrum and making it ideal for reservoir characterization/quantitative interpretation and geological interpretation. While shooting the seismic data, PGS also acquired gravity and magnetics data along the same lines. As such, the PGS Access project combines regional 2-D geological interpretation, quantitative interpretation, and gravity and magnetics. It also ties to important pre- and post-salt wells and discoveries, providing an integrated geoscience project targeted specifically at exploration and aiding geoscientists in understanding this prolific yet geologically complex margin.