CGG starts second-phase North Sea OBN survey

CGG has completed the first phase of a multi-year programme for what it claims is the largest-ever ocean bottom node (OBN) multi-client survey in the UK central North Sea.

Work has now started on the second acquisition phase: the survey started in March, and CGG plans to issue first results in 1Q 2021.

The UK’s central sector remains a prospective region, with recent large gas-condensate discoveries such as Glengorm and Isabella.

According to CGG, operators are focusing increasingly on deeper, higher-risk Jurassic and Triassic plays, typically under HP/HT conditions. But the complex structural processes associated with Permian salt movement has complicated imaging of these deeper reservoir targets.

The new survey provides long-offset, full-azimuth coverage and a low-frequency signal in a shallow-water environment, combined with CGG’s OBN processing and imaging technologies.

The aim is to provide new insight to help de-risk these plays while assisting further development of existing fields in the region.

Sophie Zurquiyah, CEO of CGG, said the data would help de-risk recently awarded blocks under the UK’s 32nd Licence Round.

Source: Offshore Magazine