Chinese offshore drilling contractor China Oilfield Service Ltd has chartered a jack-up rig built by Chinese yard CIMC Raffles for operation in Bohai Bay in the country’s north.

The Gulf Driller IV set off on Wednesday to Bohai on a 16-month charter for development drilling at the Pengbo block.

It is understood that this is Gulf Driller IV’s first employment, although construction was completed three years ago.

The rig is being maintained and managed by Ocean Challenger, an asset management company owned by CIMC Raffles.

An ABB-classed rig, Gulf Driller IV is of the Super M2 design, is capable of operating in water depths of 91 metres and can drill to depths of 9144 metres.