Ships and aircraft were ordered to stay away because of the risk of explosion. The leak developed as workers tried to cap a well 150 miles east of Scotland. Please read more from source:
http://www.nytimes.com/2012/03/28/world/europe/gas-leak-on-platform-in-north-...
http://www.nytimes.com/2012/03/28/world/europe/gas-leak-on-platform-in-north-...