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Public Information Booklet
Question - What kind of pipeline will be built? Will it be buried? If so, where will it
be buried? What will be the path of the pipeline? What size pipe will be used?
What are the minimum and maximum lengths of the pipeline?
The Precinct will require a number of pipelines to connect the gas fields to the LNG
processing facilities. Enough pipelines need to be included to meet the potential
maximum Precinct capacity (50 million tonnes per annum) supporting multiple offshore
gas fields and the staged development of the Precinct. Therefore the pipelines required
include:
� up to 4 gas pipelines from the gas fields (in the order of 1.2 metres or 48 inches in
diameter); and
� up to 4 condensate/water pipelines from the gas fields to the Precinct (in the order of
0.45 metres or 18 inch in diameter);
� option for 2 export pipelines of up to 0.6 metres in diameter (24 inches), conveying
carbon dioxide to possibly re-injection offshore (put back in the ground/reservoir)
should a project proponent elect to re-inject reservoir carbon dioxide;
� Option for up to 4 export pipelines of around 0.45 metres in diameter (18 inches),
conveying monoethylene glycol (MEG) back to the offshore facilities. MEG is like
anti-freeze used in car radiators in places where it snows.
Offshore in deep water the pipelines will be laid via a pipelay vessel (Figure 30). To make
sure the pipelines donít move due to waves and cyclones they will be have a combination
of being buried in a trench and rock dumped on top to hold the pipeline down.
The proposed shore crossing locations for the pipelines are shown in Figure 9. These
locations were identified to avoid known heritage areas and be a safe distance from the
shipping channel for safety.
The pipelines will require a prepared area (for pulling the pipelines ashore) and an
onshore pipeline corridor through to the LNG facility. The pipeline will be buried and all
the area rehabilitated following installation.
Figure 29 shows the pipeline corridors for the Southern James Price Point Option 1. The
pipelines will be built in stages. The foundation proponent will use half of the first corridor
for its initial pipelines. The onshore area will then be rehabilitated. When the foundation
proponent expands their plant they will use the second half of the pipeline corridor and
again rehabilitate the area. This process would be repeated on the other corridor for the
future proponent(s).
There will be no access restriction to these areas after installation and rehabilitation is
completed.
Woodside, as foundation proponent, would continue to investigate ways to reduce the
potential environmental and heritage impacts in consultation with the Traditional Owners.
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