Client: Coffey Environments
Location: Southern Highlands, Papua New Guinea

Key Services Provided:

• Hydrodynamic Modelling—near-field, 1D and 2D
• Advection-Dispersion modelling of the condensate spill plume
• Assessment of condensate spill fate
• Assessment of ecological effects of spill

Overview

Water Technology was commissioned by the Coffey Environments to develop near-field and far-field hydrodynamic models of various waterways and a Lake system, which lay along the route of the proposed condensate pipeline in the Southern Highlands of Papua New Guinea. The modelling investigation has being undertaken in order to understand the likely transport and fate of  condensate spills into watercourses along the pipeline route. The models can be used to undertake near-field and far-field modelling of spill plumes for a range of spill and river/lake flow conditions, with a view to informing spill response plans developed as part of the pipeline project.

The modelling involved detailed assessment of near-field plume mixing using the package CORMIX, coupled with extensive 1D models (MIKE 11) of the river network in the Southern Highlands.  The lake was modelled in 2D (MIKE 21) in order to describe the lake hydrodynamics and mixing in more detail.