The company posted a profit of US$25.6 million for the first six months of 2016, down 89% on the US$227.5 million profit booked over the first half of 2015.
This came as revenue dropped from US$863.8 million a year ago to US$580.8 million over the recent six-month period.
Hitting revenues was a decline in commodity prices, with the average realised oil and condensate price falling 27% to US$41.61
