PGS ASA, formerly known as Petroleum Geo-Services ASA, is a Norway-based marine geophysical company that provides a range of seismic and reservoir services, including acquisition, imaging, interpretation and field evaluation. It operates through three segments: MultiClient, Marine Contract and External Imaging. Multiclient provides a data library that contains advanced images of the subsurface that oil and gas companies use to explore for hydrocarbons. The MultiClient library consists of seismic data surveys which are licensed to customers on a non-exclusive basis. Marine Contract performs seismic services under contract in accordance with customer specifications. External Imaging activities are directed towards supplying services to a wide range of exploration and production companies. Imaging services comprise proprietary GeoStreamer-based imaging technology, as well as reservoir characterization and 4D (four-dimensional) oriented processing solutions. The Company operates globally.