The US driller reported a net loss from continuing operations of $396.6 million ($1.41 per share) on revenue of $597.6 million compared to a net gain of $124.4 million (43 cents per share) in the same period a year ago and a loss of $161.1 million (57 cents per share) in the fourth quarter 2015.
Of the total first quarter loss, $316.6
