Tul low Oi l narrowed losses during 2015 despite booking heavy write-offs as it combats the low oil price environment. The operator made a loss after tax of US $1.04 Bn, down 37% from $1.55 Bn in 2014. Tullow’s operating loss nearly halved to $1.09 Bn, while sales fell 27% to $1.61 Bn.
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