By signalling its intention to exercise preferential rights on three blocks in Brazil's pre-salt province, Petrobras has shown interest in recycling exploration acreage, but it is not yet clear where the Tartaruga Verde asset fits into this picture, writes Gareth Chetwynd.

Tartaruga Verde is already under development, with a floating production, storage and offloading vessel due to start up production in the third quarter of 2017, but the Tartaruga South-West extension is one of four “unitisable” areas up for grabs in an 27 October bid round for pre-salt area.