The US’ Jacobs Engineering has won a deal to complete a basic engineering study for four new sulphur recovery units on state energy giant Saudi Aramco’s multi-billion dollar Wasit gas development scheme.

Under the front end engineering and design (Feed) deal, Jacobs will design four recovery units to separate sulphur from natural gas, each with a capacity of 1,200 tonnes a day. The US engineering firm will provide its Euroclaus technology for the scheme.

The Wasit gas scheme covers the production and processing of 2.5 billion cubic feet a day of natural gas from the offshore Arabiyah and Hasbah fields. Both fields are sour, or contain high volumes of sulphur.

Aramco plans to build a series of gas processing plants, two offshore gas platforms linked by a tie-in platform and subsea power and communications pipelines. Jacobs is the Feed contractor for the main infrastructure packages on the scheme along with Canada’s SNC Lavalin Group.