About Nexen Petroleum Colombia Ltd.

Nexen Petroleum Colombia Ltd., a wholly-owned subsidiary of CNOOC Limited, opened an office in Bogota in February 1995. Since 1999, we’ve drilled seven oil exploratory wells (within conventional reservoirs) in Colombia, one of which resulted in an oil field (operated by Petrobras) that in 2012 provided about 1,600 barrels of oil per day net to Nexen. While we continue to produce oil in Colombia, we are also investigating shale gas development due to the strong local demand for natural gas.