The Jamnagar Refinery is a private sector crude oil refinery owned by Reliance Industries in Jamnagar, Gujarat, India. The refinery was commissioned on 14 July 1999 with an installed capacity of 668,000 barrels per day (106,200 m3/d). It is currently the largest refinery in the world.

Source: http://en.wikipedia.org/wiki/Jamnagar_Refinery