Brent North Sea crude rose to $53.45 a barrel on Monday -- its highest price in a year after President Vladimir Putin indicated Russia was ready to join measures to limit global oil production.
A helicopter crashed off the western coast of Norway on Friday, police said, with media reporting that 13 to 17 people were on board.
Oil prices recovered on Monday after sharp falls the previous session, with US crude back above $30 a barrel as traders mulled the impact of a potential output freeze by key producers.
