Petroleum Africa
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Thursday, February 9, 2017
ADUS DeepOcean, a subsidiary of DeepOcean Group, and DeepOcean Ghana Ltd. recently completed an innovative deepwater subsea 3D laser survey offshore Ghana for Tullow Oil.
The survey was 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 1,800 meters water depth, setting new benchmarks for a high resolution contextual 3D survey, while proving an alternative and rapid ‘contactless’ solution to conventional metrology surveys.
The dynamic laser survey solution, from a moving ROV, comprised a deep rated 2G Robotics ULS 500 Pro Laser and Sonardyne’s SPRINT INS system. The performance of the systems outweighed expectations with accuracies approaching 1cm in dynamic operation.
The accurate 3D ‘point clouds’ resulting from the survey, coupled with innovative modelling techniques developed in house, are providing DeepOcean engineers with valuable quantitative & contextual information to better inform IMR tasks, and undertake metrology, thereby increasing efficiency for the client.
“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,” commented Hugues Villedey, Subsea Projects Manager for Tullow Ghana Ltd.
The success of these recent survey operations has led to a further three-year contract for DeepOcean Ghana Ltd.
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