Subsea Integration Alliance has bagged the upstream construction contract for the $2bn Fortuna floating liquefied natural gas (FLNG) project, offshore Equatorial Guinea.

Subsea Integration Alliance is a partnership between Subsea 7 and OneSubsea, a Schlumberger company.

The contract, which is in the range of $150-300m, was awarded by Ophir Equatorial Guinea (Block R), a fully-owned subsidiary of UK-based Oil and gas firm Ophir Energy.

It covers engineering, procurement, construction, installation and commissioning (EPCIC) of the subsea umbilicals, risers and flowlines and for the subsea production systems.

The scope of the contract is to deliver 440 million standard cubic feet per day of gas through infrastructure made up of four wells contained at an average water depth of 1,790m. Three of the wells are in the Fortuna field, while the fourth is in the underlying Viscata field.

Ophir CEO Nick Cooper said: “With the full suite of upstream and midstream construction contracts now awarded this completes another milestone to FID.

“The government is a key stakeholder in the Fortuna project and I am pleased that the local content requirements in these contracts will help to further develop the state of Equatorial Guinea. Fortuna, West Africa’s first deepwater FLNG Project, is expected to FID before the end of 2017.”

Apart from the EPCIC contract, Ophir Energy also awarded a contract for future inspection, repair and maintenance (IRM) services to Subsea Integration Alliance.

Subsea 7 Africa VP Gilles Lafaye said: “This award demonstrates the cost effective and collaborative solutions that Subsea Integration Alliance can bring to our clients.

“We look forward to working with OneSubsea and Ophir Energy to successfully deliver and maintain this FLNG project offshore Equatorial Guinea.”

The Fortuna FLNG project is located in the Block R license, about 140km west of Bioko Island. It will be Africa’s first deepwater independent FLNG project, with the first production forecast for 2020.

The Fortuna field, which is located in water depths of 1,680-1,850m, is expected to have around 3.0 trillion cubic feet (Tcf) of LNG in a total of six commercial discoveries.

Image: Ophir awards upstream construction contract for Fortuna LNG project to Subsea Integration Alliance. Photo: courtesy of SUBSEA 7.