Offshore drilling contractor China Oilfield Service Ltd (COSL) is sending one of its jack-up rigs back to China to join its domestic drilling campaign.

Contracting sources said the COSLSeeker, managed by COSL Drilling Pan Pacific, will soon set off from Indonesia, where it has been warm stacked at the Bintan Offshore Marine Centre (BOEM) since last October after it had completed a short drilling stint off West Africa.