Get into position

French oil major Total, operator for the Egina oil field offshore Nigeria, together with its construction and survey partners, has successfully installed a Fusion 6G subsea positioning network to support its development of the $15 billion project. Supplied by Sonardyne International Ltd, UK, the acoustic technology specified for Egina, which is still ongoing, included a field-wide array of Compatt 6 seabed transponders that were deployed and made ready for work eight days ahead of schedule.

Located 150 kilometres off the coast of Nigeria, in water depths of up to 1750 metres, the Egina field covers an area of around 500 square miles. Infrastructure will include an FPSO, an oil offloading terminal and subsea production systems that will included 52 kilometres of oil and water injection flowlines, 12 flexible jumpers, 20 kilometres of gas export pipelines, 80 kilometres of umbilicals, and subsea manifolds. Production at the field is expected to reach 200,000 barrels per day at its peak.

Fusion 6G is Sonardyne’s sixth generation of Long BaseLine (LBL) acoustic positioning system, and is widely considered the industry standard tool for subsea construction and survey thanks to its performance and time saving features. Using Fusion 6G, major tasks such as structure installation, spoolpiece metrology, ROV tracking and route surveys can be completed quickly, reliably and accurately in any water depth.

Issue 125 October 2015