Higher sales volumes led to an operating income of $132.6 million in 2011, up from $78.1 million in 2010, though production expenses were also higher.
The slight dip in net income came after a 56.4% rise in the value of total oil and gas sales, to $201.4 million from $134.5 million in 2010 as sales from its Etame Marin block in Gabon rose 8.7%
