QGC connects two Curtis Island LNG plants to mainland

QGC Pty. Ltd. simultaneously laid two 1-m gas pipelines across Gladstone Harbor, using the same trench to connect the Queensland Curtis LNG project and Australia Pacific LNG project—both on Curtis Island—to the mainland. The segments will connect each project’s main pipelines from Surat basin gas fields, about 300 km inland, to the Curtis Island LNG plants.

Pipelay entailed winching the lines 2.3 km from the mainland to Curtis Island in what QGC described as Australia’s longest large-diameter underwater pipe pull. The harbor crossing involved construction of temporary facilities including a 2-km road, two bridges, and a railway line to move the pipes across two creeks, marshes, and mud flats. A temporary 450-tonne capacity winch on Curtis Island pulled the pipes—which together weigh 8,000 tonnes—through the subsea trench, which will now be filled with gravel and rock to protect the pipelines.

Co-locating the pipelines and installing them concurrently minimized environmental and boating disruption, QGC said. The crossing follows raising the roof on Queensland’s first LNG storage tank, completed Feb. 8.

QGC, a BG Group company, managed the project, with lay work completed by MCJV, a joint venture of McConnell Dowell Constructors (Aus.) Pty. Ltd. and Consolidated Contracting Co. Australia Pty. Ltd. BG agreed last year to sell a stake in Queensland Curtis LNG to China National Offshore Oil Corp. (OGJ Online, Oct. 31, 2012).

Contact Christopher E. Smith at chriss@ogjonline.com.

Related Articles

DOE approves LNG exports to non-FTA countries from Oregon project

03/24/2014 The US Department of Energy conditionally approved Jordan Cove Energy Project LP’s application to export LNG through its proposed terminal on Orego...

INGAA Foundation forecasts oil, gas infrastructure outlays to 2035

03/24/2014 An estimated $640.9 billion, or an average $29.1 billion/year, will need to be spent on US and Canadian midstream crude oil, natural gas, and natur...

Export short-sightedness

03/24/2014 Opposition by specific refiners to US exports of crude oil should surprise no one. The export ban suppresses the price of domestically produced lig...

HSC remains closed, fuel cleanup continues after barge collision

03/24/2014 The Houston Ship Channel (HSC) remained closed to unauthorized vessels Mar. 24 as the result of a temporary emergency safety zone being established...

Careers at TOTAL

Careers at TOTAL - Videos

More than 600 job openings are now online, watch videos and learn more!

 

Click Here to Watch

Other Oil & Gas Industry Jobs

Search More Job Listings >>
Stay Connected