pgs4dUnderstanding new details in the 4D seismic snal uncovered by a broadband time-lapse dataset at Gullfaks Main Field in the North Sea. The Gullfaks area is in Block 3410Offshore staff. OSLO, Norway — PGS has a letter of award to acquire a large 3D seismic survey over the offshore South Atlantic margin.. One of the company’s Ramform Titan