Amerisur is an E&P operating onshore Columbia. The company has high margin production from its Platanillo field and Mariposa-1 well supported by ownership of the OBA pipeline, which connects Platanillo into the Ecuadorian pipeline system. A new up-to-14 well drilling programme is about to begin, providing newsflow and a route to 20mbbl/d. Buy, 30p target (from 25p).