Oslo-listed Subsea 7 has clinched a BP contract worth between $300m and $500m.

It will work on the deepwater Mad Dog 2 development, 190 miles south of New Orleans.

The contract covers engineering, procurement, construction and installation (EPCI) of the subsea umbilicals, risers and flowlines (SURF) and associated subsea architecture.

It is collaborating with OneSubsea, a Schlumberger company.

Offshore installation activities are scheduled for 2019 and 2020.