Atteris conducted a study on Barossa Gas Export Pipeline and Flowlines repair plan to enable the client to perform risk and economic assessment to determine the best pipeline repair pre-investment strategy.
Atteris conducted an initial assessment of the foreseeable damage modes and failure mechanisms pertinent to the Barossa flowlines and gas export pipeline. A number of repair methods were then assessed including grouted sleeves, repair clamps and pipeline section replacements using either mechanical connectors or hyperbaric welding (where practical). Atteris then assessed the various pipeline repair system pre-investment options which included:
Based on the above, Atteris defined repair schedule acceleration estimates and pre-investment costs for the above-listed options enabling ConocoPhillips to perform internal economic assessments to determine an appropriate level of pipeline repair pre-investment.
