The two deals - which were secured by its joint venture with Mubadala Petroleum, Petrofac Emirates - have a combined value of $687 million.
The contractor landed the engineering, procurement and construction (APC) job for the expansion of compression facilities on the Bab field 150 kilometres south-west of Abu Dhabi.
The deal, worth $500 million, will see it modify three existing compressor stations and install a fourth new one.
