Chinese offshore drilling contractor China Oilfield Service Ltd (COSL) has emerged as a front-runner for a major drilling contract to be offered by France's Total for further developing the Yadana gas field in the Andaman Sea off Myanmar, writes Xu Yihe.

Industry officials said COSL stands a high chance of beating rivals including PV Drilling and Seadrill to win the award covering four wells at the field, with drilling to start at the end of October.