ADUS DeepOcean and DeepOcean Ghana have completed a 3D laser survey for Tullow Oil off the coast of West Africa. 

Claimed to be the first comprehensive commercial survey in the offshore region, it is expected to provide cost-effective subsea data.

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The survey was conducted in 12 drill centre locations and a total of 27 metrologies in water depths ranging from 800m to 1,800m. 

The company claimed that this survey will set new benchmarks for high-resolution contextual 3D surveys, while providing a rapid alternative to the conventional metrology surveys.

Tullow Ghana Limited subsea projects manager Hugues Villedey said: “The detail achieved by ADUS DeepOcean’s recent dynamic subsea laser surveys has far exceeded expectation.

"Data and images gathered have proved very valuable in increasing our understanding of the dynamics of the subsea assets, enabling more informed decision-making."

“The data and images gathered have proved very valuable in increasing our understanding of the dynamics of the subsea assets, enabling more informed decision-making.”

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Conducted from a moving ROV, the dynamic laser survey consisted of a deep-rated 2G Robotics ULS 500 Pro Laser with a Sonardyne’s SPRINT INS system.

All these systems performed above expectations with accuracies approaching 1cm in dynamic operation.

The accurate 3D ‘point clouds’ from the survey, along with in-house modelling techniques, provided DeepOcean engineers with quantitative and contextual information to better inform IMR tasks, and undertake metrology, increasing efficiencies for the client.

Due to the success of recent survey operations, DeepOcean Ghana has secured an additional three-year contract.