BHP Billiton expects drilling of first new Trion well to begin in October
February 15, 2018 at 18:26 PM EST
MEXICO CITY, Feb 15 (Reuters) - Drilling of the first new exploration well in BHP Billiton's deepwater Trion project will begin in October, part of a plan approved by Mexican regulators on Thursday that also revised downward the project's estimated oil and gas resources.