The Wheatstone Ashburton West Pipeline Project links the Chevron operated Wheatstone domestic gas plant to the DBNGP.
Agreement was reached with Chevron Australia to build, own and operate the domestic gas pipeline in September 2013.
The Project included:
- Refurbishment of DDG’s existing 87 kilometre 10 inch pipeline from Ashburton West to Compressor Station 2 on the Dampier to Bunbury Natural Gas Pipeline (DBNGP)
- Construction of an 87 kilometre 16 inch pipeline (loop) alongside the existing 10 inch pipeline
- Construction of a new 22 kilometre 16 inch pipeline, connecting Ashburton West to the Wheatstone Project’s domestic gas plant; and
- An initial 30-year 100% take-or-pay gas transportation contract between DDG and Chevron Australia. The Project will provide an initial forward haul gas transmission capacity of 337 TJ per day with future expansion capacity of up to 600TJ per day.
Detailed design on the project was done by DDG in late 2013 and early 2014, with a land agreement being secured with the Buurabalayji Thalanyji Aboriginal Corporation (BTAC) and landowners in early 2014.
The Projects obtained Major Project Status in January 2014 and this provided Lead Agency support, in this case from the Department of State Development who supported DDG in coordinating the application for statutory and regulatory approvals.
The line pipe was sourced from Japan and was supplied by Metal One Corporation. It was delivered to Dampier Port in early April in line with construction schedule.
The construction commenced in the second half of 2014 with Monodelphous KT Pty Ltd and Enerflex Process Pty Ltd being the pipeline and facilities contractors for the Project respectively.
The Wheatstone Ashburton West Pipeline Project achieved practical completion in December 2014, in line with its original project timeline.