Would the gathering lines meet 1.2-metre cover levels (required for maximum stability and the possibility of putting gas and water pipelines in the same positions)?
At Santos’ Queensland operations, gas and water pipes in the gathering system are 110-500 mm, high-density polyethylene (usually called HDPE or poly-pipe). The standard depth of cover for gathering systems is 1000mm, deepening to 1200-1400 millimetre cover at foreign or road crossings. Gas and water lines are laid in the same trench whenever possible.
