Oil increased for a second day on Wednesday, securing more than 2%, as hurricane closed US offshore production and an industry report indicated that US crude inventories unpredictably decreased. 

Over a quarter of US offshore output was closed on Tuesday due to Hurricane Sally. The American Petroleum Institute on Tuesday said crude inventories dropped by 9.5 million barrels, instead of increased as analysts estimated.

Brent crude increased by 2.1%,to $41.39 a barrel by 1012 GMT, while US crude added 2.2%, to $39.13. Both contracts increased on Tuesday by more than 2%.