The Chevron-operated Rosebank project is located approximately 130km (80 miles) north west of the Shetland Islands, in water depths of approximately 1, 100m (3, 700 ft).
The court heard he was taken to a secluded area near to Mauldslie Bridge in Rosebank, South Lanarkshire, and attacked with a machete, leaving multiple wounds to his head, face, arms and legs.