DeepOcean gathers data for Tullow in laser survey off Ghana

  • Equipment

Dutch offshore services provider DeepOcean has completed a deepwater subsea 3D laser survey offshore Ghana for the oil and gas company Tullow Oil. 

The company said on Wednesday that the survey was done by its subsidiary ADUS DeepOcean and DeepOcean Ghana.

The 3D laser survey was done off the West Coast of Africa for Tullow Oil and, according to DeepOcean, it is the first extensive commercial survey of its kind.

The survey operations covered 12 drill center locations and a total of 27 metrologies in water depths between 800 and 1800 meters.

The dynamic laser survey solution from a moving ROV was comprised of a deep rated 2G Robotics ULS 500 Pro Laser and Sonardyne’s SPRINT INS system. DeepOcean said the performance of the systems outweighed expectations with accuracies approaching 1cm in dynamic operation.

According to the company, the accurate 3D ‘point clouds’ resulting from the survey, coupled with modeling techniques developed in-house, provide engineers with valuable quantitative and contextual information to better inform IMR tasks, and undertake metrology.

Hugues Villedey, Subsea Projects Manager for Tullow Ghana, said: “The detail achieved by ADUS DeepOcean’s recent dynamic subsea laser surveys has far exceeded expectation.

“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.”

DeepOcean also added that the success of these recent survey operations has led to a further three-year contract for DeepOcean Ghana.

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