Mero Revolutions: countering CO2 in pre-salt Brazil?

Petrobras, Shell, TOTAL and two Chinese Majors are pushing the boundaries of deep-water technology to develop the Mero oilfield. But the distribution of possible NPV outcomes is very broad, at c$6bn. Challenges remain. The ingenuity required to overcome them should not be under-estimated. Further prizes may be unlocked in the process.