The development stages:Exploration drilling/2011-12.Operated by Touchstone Exploration, the Coora onshore field covers an area of 1,694 hectares in Trinidad Island. Coora was discovered in 1936 and contains estimated reserves of 310Mb. Its annual production reaches 300b/d, which is piped directly to the Petrotrin refinery. A total of 360 exploratory wells have been drilled in the area. The company plans to recondition 74 and drill 8 new ones.