Dallas-based Kosmos Energy suffered a widening of losses in the third quarter of 2017.
Kosmos’ pre-tax losses totalled $64.9million for the three months, compared to $52.3million last year.
Revenues were $151.2million against $46.6million in the same quarter of 2016.
Chief executive Andrew Inglis said: “Over the first nine months of 2017, our strong free cash flow has allowed us to reduce debt and to grow the value of our company through both organic and inorganic opportunities.
“We have ramped up production at the TEN fields, progressed the Tortue project offshore Mauritania and Senegal with our partner BP, and acquired a strategic exploration and production position in Equatorial Guinea which is immediately accretive.
“Our exploration portfolio remains strong with four world-class prospects to be tested in Mauritania, Senegal, and Suriname over the next 12 months.”