US-based McDermott International has been awarded the $450m engineering, procurement, construction and installation (EPCI) contract for phase 1b of Qatar Petroleum’s Bul Hanine field redevelopment project.

The scope of the deal includes the fabrication and installation of four wellhead topsides, a manifold platform and jacket together with associated subsea pipelines and brownfield tie-in works.

The combined weight of the structures is approximately 6,400 tonnes and includes 75 kilometres of onshore and offshore pipelines and umbilicals.

Fabrication work is expected to start in the third quarter of 2018 and offshore installation is planned to begin in the second quarter of 2019.

In September 2015, McDermott International was awarded the EPCI contract for phase 1a of the project, which was worth $200m.

The Bul Hanine redevelopment project is expected to more than double the field’s current production rate from 40,000 barrels a day (b/d) to 95,000 b/d and extend the life of the field by more than 25 years.