Petrofac said it expects its IES net profit for 2015 to drop by around $45million after assessing a number of ongoing projects.
The company said the current change in oil prices and “expectation on delivery” of certain IES projects had been behind the estimated reduction.
Within the next year, the company said the Laggan-Tormore project in Shetland, would result in “no profit or loss”.
Chevron's profits have risen for the third quarter income for the first time in three years.
The oil major credited refining costs as one of the key factors in boosting their revenue.
However the company did see a slight drop in its sales and operating revenues for the third quarter, pulling in $52billion, compared with $57billion last year.
