Which oil rig exploded in 1988 killing 167 people?

Piper Alpha was a North Sea oil production platform operated by Occidental Petroleum (Caledonia) Ltd. The platform began production in 1976, first as an oil-only platform and later converted to add gas production. An explosion, and the resulting oil and gas fires, destroyed it on 6 July 1988, killing 167, including two crewmen of a rescue vessel;61 survived. The total insured loss was about £1.7 billion (US$3.4 billion). At the time of the disaster, the platform accounted for approximately ten percent of North Sea oil and gas production, and the accident was the worst offshore oil disaster in terms of lives lost and industry impact.

The blazing remains of the platform were eventually extinguished three weeks later by a team led by firefighter Red Adair, despite reported conditions of 80 mph (130 km/h) winds and 70-foot (20 m) waves. The part of the platform which contained the galley where about 100 victims had taken refuge was recovered in late 1988 from the sea bed, and the bodies of 87 men were found inside.

Survivors and relatives of those who died went on to form the Piper Alpha Families and Survivors Association, which campaigns on North Sea safety issues. The wreck buoy marking the remains of the Piper is approximately 1.1 nautical miles from the replacement Piper Bravo platform.