USA: Keppel to Turn Ocean Voyager into Ocean Onyx

January 9, 2012

Keppel AmFELS, a shipyard strategically located at the gateway of the Gulf of Mexico, Brownswille, Texas has secured a contract from Diamond Offshore to construct and upgrade a moored semisubmersible rig with delivery scheduled for 3Q 2013. The estimated shipyard contract price is approximately US$150 million.

The rig, to be named Ocean Onyx, will be constructed from an existing hull from a Diamond Offshore cold stacked unit, which previously operated as the Ocean Voyager.

Keppel AmFELS’ scope of work on the Ocean Onyx includes the reconstruction of the rig, installation of advanced equipment such as a modern drilling package, and installation of sponsons to the pontoons to enhance the stability of the rig in deepwater. The rig will be designed to operate in water depths of up to 6,000 feet and will have a variable deck load of 5,000 long tonnes, a five-ram blowout preventer, and quarters capacity for 140 personnel.

Mr Larry Dickerson, President and CEO of Diamond Offshore, said, “We have worked with Keppel for more than a decade, and our rigs have consistently been delivered on time and within budget, whether in the US or Singapore. With Keppel’s track record as a leading offshore yard, we are confident that this project will also be a success.”

Keppel O&M has previously built four similar semisubmersible rigs for Diamond Offshore: the Ocean Baroness, Ocean Rover, Ocean Endeavour and Ocean Monarch.

Mr Tan Geok Seng, President of Keppel AmFELS, said, “We are pleased to be able to embark on another major rig project for Diamond Offshore, who has worked with Keppel on more than 20 projects since 1996. Diamond’s rigs are sent regularly to our yards around the world for maintenance, repair and upgrade, and Keppel AmFELS has proven to be their choice yard in the US Gulf of Mexico. Having built a long-term partnership with Diamond, we understand the company’s needs and are confident of delivering another high quality rig to their satisfaction.”

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Offshore Energy Today Staff, January 9, 2012; Image: Keppel