Shell Crux Sub-Structure Project, Australia

Shell Australia and its joint venture partner SGH Energy are developing a floating liquefied natural gas (FLNG) facility at the Crux gas field offshore Western Australia for the production and transportation of liquefied natural gas. Chu Kong Petroleum and Natural Gas Steel Pipe Holdings Limited has been invited to fabricate structural modules for platforms in the project, supplying around 30,000 tons of longitudinal double submerged arc welded pipes（SAWH） with diameters ranging from 700mm to 3,760mm and wall thicknesses ranging from 15mm to 100mm.

Specifically, the contract includes procuring raw materials for the structural modules as well as necessary cutting, rolling, edge preparation, longitudinal seam welds, and ring welds to fabricate the pipes, which will then be transported to the port.

A structural module, also known as an offshore drilling rig, is a large offshore structure used to drill wells to extract crude oil and natural gas from beneath the sea floor. The oil and gas are temporarily stored on the platform before being transported to land-based refineries that fractionate petroleum into usable products.

Depending on the circumstances, the platform may be anchored to the seabed, take the form of an artificial island, or float over the site. Multiple subsea wells can also tie into a single platform via pipelines. The whole structure module makes use of different kinds of iron and steel products, including submerged arc welded pipes provided by PCK.