Friday, 28 January 2011 13:33

China’s first deep-water rig the most advanced of its kind – DNV

COSL Pioneer is China’s first deep-water semi-submersible drilling platform and according to DNV, it is one of the most advanced drilling platforms ever built.

The COSL Pioneer was recently delivered from Yantai CIMC Raffles and it is equipped with DP3 dynamic positioning, an anchor-mooring positioning system as well as an unmanned cabin design to be remotely controlled from the navigation and operating rooms.

The platform has an overall length of 104.5m, a module width of 65 metres and a module depth of 36.85m. It has a design draught from 9.5m to 17.75m, an operating water depth of 70 – 750m, a maximum design wind speed of 51.5m per second, a maximum vertical drilling depth of 7 500m and a maximum variable deck load of 4 000 tons. The multi-function platform is able to accommodate 120 cabin crews.

“The delivery of COSL Pioneer for operation represents an important milestone in upgrading COSL’s deep-water operation capabilities,” commented COSL’s chairman, Liu Jian.

COSL Pioneer was designed and constructed in accordance with the standards and regulations stipulated by Norway waters and met the requirements of the Norwegian Petroleum Safety Administration PSA, Norwegian Maritime Directorate NMD, DNV, the NORSOK petroleum industry safety standards and relevant traditional requirements for semi-submersible platforms.

“This project is like a journey for everyone involved,” said DNV Site Manager Thomas Lo at Yantai CIMC Raffles. “It transforms the yard from infancy to maturity in order to achieve the quality level of a complex offshore project. Meanwhile, with the added complexity, the yard manages to maintain a matching safety record. We have seen that the yard has developed innovative technology on the way. For example, the 20 000 ton overhead crane used for mating of the upper and lower hull is the world’s number one. With the continuous investment of the CIMIC Group, we will see even more rapid development at the yard to cater for the high-end offshore market. I wish the yard all the best and I feel that this yard has great potential to be amongst the very best in China.”

DNV President Tor Svensen, Area Chair for Greater China Joerg Beiler and Offshore Director Carl Arne Carlsen were invited to be present at the delivery ceremony held in Yantai. “It’s another milestone achievement for China’s offshore industry. I congratulate all parties involved,” said Beiler.

“As a class society coming from the North Sea, we are very proud and happy to be actively engaged in the fast development of the Chinese offshore industry. We will continue our endeavour to support our customers and partners in their pursuit of offshore engineering,” concludes Beiler.

Sources: www.dnv.com 

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