(IIFL) -- India's largest crude oil refining firm, Indian Oil Corporation (IOC) is planning an investment of Rs. 40.000 crore to set up a world-class greenfield refinery-cum-petrochemical complex on the western coast with a capacity to process 18 to 20 million tonnes of crude oil per annum. "We plan to set up a coastal refinery to capture the export market in future as also to strengthen our foothold in the domestic market," chairman and managing director of IOC, Rs. Butola said.