Polarcus set for another phase of Cygnus survey as environment plan gets approval

Seismic services player Polarcus has received approval from Australian regulator for its environment plan for phase 3 south of its Cygnus 3D marine seismic survey offshore Australia.

Illustration. Source: Polarcus

Polarcus submitted the environment plan for this phase of Cygnus survey on March 21, 2019, and the Australian offshore regulator, NOPSEMA, accepted it on Wednesday, June 5, 2019.

The Cygnus 3D Marine Seismic Survey (MSS) is a three-dimensional multi-client marine seismic survey being undertaken by Polarcus in Commonwealth waters of the Vulcan Sub-basin (in the Western Bonaparte Basin). The Cygnus 3D MSS is a typical 3D survey using methods and procedures similar to others conducted in Australian waters. No unique or unusual equipment or operations are proposed.

The Cygnus 3D MSS has been acquired by Polarcus in phases since 2015 under a number of revisions of the environment plan.

The acquisition area comprises the area within which 3D seismic acquisition will be undertaken and covers approximately 1,767 km². The acquisition area is surrounded by a larger operational area, for the purpose of line run-ins, run-outs, source testing, soft starts and turns etc.

The operational area covers approximately 7,408 km2 and, at its closest, is approximately 160 km north of the Kimberley coast and 170 km south of the Indonesian Archipelago and Timor-Leste. The survey will be undertaken in water depths of up to approximately 205m.

According to NOPSEMA, Phase 3 South may start as early as June 2019 and will be completed before December 31, 2020. The survey will take a planned maximum of 36 days to acquire with 7 days deployment/retrieval and one day local transit to and from Port.

Cygnus South Phase 3 Map / Source: NOPSEMA

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