ExxonMobil has started a new exploration campaign in the Stabroek block offshore Guyana, the ninth wildcat this year so far in an area where the US supermajor has already discovered nearly 11 billion barrels of oil equivalent in recoverable resources.

The company began last week drilling of the Sailfin-1 well with the Stena Drilling drillship Stena Carron, according to updated information from Guyana’s Maritime Administration Department.