Subsea 7 and Schlumberger have secured a substantial new contract for Ophir Energy's Fortuna LNG project off Equatorial Guinea.

The contract, which is worth between $150m and $300m, will be carried out in average water depths of 1,790 metres by their Subsea Integration Alliance (SIA) joint venture.

It will involve combining subsea umbilicals, risers and flowlines (SURF) and subsea production systems (SPS).