SNC-Lavalin to support Woodside’s Scarborough project

Canadian engineering company SNC-Lavalin has signed two sub-contracts to support the development of the floating production unit on the Woodside-operated Scarborough gas field development project in Western Australia.

Indicative subsea layout for Scarborough; Source: Woodside

SNC-Lavalin said on Wednesday that, under the two contracts, it would provide front end engineering design support for the semi-submersible hull and mooring, model testing scoping and supervision, and ancillary scopes.

SNC-Lavalin added it would also provide overall technical safety, formal safety assessment and risk engineering services to support the engineering design activities for Scarborough.

The two contracts will be executed by SNC-Lavalin’s Houston Offshore Engineering subsidiary and its Atkins business in Western Australia. Both scopes have the option to extend to detailed design engineering subject to the Scarborough Joint Venture reaching a final investment decision targeted for 2020.

The Scarborough gas resource is located in the Carnarvon Basin, approximately 375 km west-north-west off the Burrup Peninsula and is part of the Greater Scarborough gas fields which are estimated to hold 9.2 Tcf (2C, 100%) of dry gas.

Woodside is proposing to develop the Scarborough gas resource with the new offshore facilities which will initially have seven high-rate, subsea gas wells tied back to a semi-submersible floating production unit moored in 900m of water close to the Scarborough field. Gas would be transported by an ~430 km pipeline to onshore processing infrastructure on the Burrup Peninsula.

“We are delighted to be able to demonstrate the breadth of our offshore oil & gas and project execution expertise to our clients globally following the acquisition of Atkins and its subsidiary Houston Offshore Engineering,” said Craig Muir, President, Resources, SNC-Lavalin.

“Bringing together the floating platform design expertise of our Houston Offshore Engineering team with the renowned technical safety and risk engineering offered by our Atkins team in Perth, allows us to provide Scarborough with world class offshore engineering solutions, while meeting the scheduling demands critical to the success of this semi-submersible facility, the second of its kind in Australian waters.”

Woodside has already awarded contracts for front-end engineering design activities for the Scarborough project. The contracts are for engineering activities related to the upstream development’s floating production unit, the export trunkline, and the subsea umbilical risers and flowlines.

Woodside has also found buyers for the natural gas to be produced from the Scarborough field. Namely, Woodside in November 2018 entered into a long-term gas sale and purchase agreement (GSPA) with W. Australia-based Perdaman for the supply of pipeline gas for a term of 20 years.

In addition, Woodside in April signed heads of agreement with ENN Group for the sale of 1.0 million tonnes of LNG per annum from Woodside’s portfolio for a period of 10 years, starting in 2025, sourced from the Scarborough gas field.

Woodside is targeting a final investment decision (FID) in 2020 and ready for startup in 2023.

Offshore Energy Today Staff

Source: Woodside

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