The new units are scheduled for delivery in the fourth quarter of 2012 and second quarter of 2013, respectively.
Total delivered costs are estimated at approximately $220m per rig, including project management, spares, and start-up costs, but excluding capitalized interest.
The contract also contains options for up to four additional units which must be exercised by 1 January 2012.
Each option unit is priced based on the original unit price, plus a potential escalation factor, with future deliveries scheduled in six month increments beginning in late 2013.
