Oil Search has exercised a $US450 million ($A642 million) option to double its stake in a string of Alaskan exploration leases, while also affirming plans to sell off a portion of its first major venture outside Papua New Guinea.
Oil Search has exercised a $US450 million ($A642 million) option to double its stake in a string of Alaskan exploration leases, while also affirming plans to sell off a portion of its first major venture outside Papua New Guinea.