PGS' Ramform Tethys to survey Aasta Hansteen

Offshore staff

OSLO, Norway – PGS will soon begin the acquisition of a new 4,400-sq km (1,698-sq mi) 3D GeoStreamer survey over the Aasta Hansteen area of the Norwegian Sea.

Work on the survey will begin next month and is planned to be completed in August, PGS said. Fasttrack data will be available four months after the final shot. 

The prefunded multi-client project is situated on the Nyk High in the outer Vøring area. It will address imaging challenges caused by deepwater and structurally complex geology, due to several episodes of rifting, compression and subsidence, PGS said, and noted that the dataset could be used as a baseline survey for future 4D studies.

PGS will use its newest flagship, the Ramform Tethys, to deploy a deep-tow acquisition configuration of 16 streamers with 75 m (246 ft) separation.

Pre-stack depth migration and velocity model building technology will be used.  In addition, it explained that its Complete Wavefield Imaging workflow will be used to address velocity estimation in areas of complex geology.

04/07/2016

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