Scotia Boost Compression and Sales Gas Pipeline Concept Refine

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In 2013 Santos had a large number of projects underway in order to expand its coal seam gas production to maintain supply to the LNG facility under construction on Curtis Island near Gladstone, as part of its multi-billion-dollar GLNG project.

One of these projects was an expansion of its Scotia facilities, which was its original Coal Seam Gas production asset. The project also included a high-pressure transmission pipeline to connect the gas through to the Curtis Island LNG plant.

Santos had a requirement to urgently commence Front End Engineering Design (FEED) for the project and to be able to place orders for some of the key long lead items. GHD’s Oil and Gas specialists had more than a decade of experience working together on similar projects with Santos and other clients. GHD was able to use that experience to rapidly finalise the concept engineering and allow Santos to progress the project.

The facilities comprised of electric-driven reciprocating compression, gas dehydration and filtration, custody transfer metering and all the necessary brownfield modifications and interconnections.

GHD completed sufficient design to deliver the required documentation to facilitate the passage of the project to the FEED sanction gates. This documentation included a Basis of Design for the compression facilities and the sales gas pipeline, P&IDs, control and shutdown philosophies, tie-in plans for the new equipment, equipment data sheets and specifications, lists and MTOs, site layouts and piping general arrangements, control architecture diagrams, HAZOP workshop, Pipeline Safety Management Study, Basis of Estimate, Class 3 estimate, Basis of Project Schedule, Project Schedule and a Concept Refine report.

For more information, please contact:
John Eijbergen: +61 7 3316 3803

Oil & Gas


Hydrocarbon processing facilities handle products which are flammable and hazardous, often at elevated pressures and temperatures. GHD delivers both greenfield developments and brownfield plant expansion or plant debottlenecking projects. Our experience includes a large number of successful projects for CSG, conventional natural gas, Liquefied Petroleum Gas (LPG), refineries and other hydrocarbon processing facilities.

Community expectations demand that pipelines and facilities be designed and constructed to minimise the risk of harm to the public . Pipelines projects must also be delivered with minimum impact on the environment and cultural heritage, whilst providing a return on investment for pipeline owners. Our team is experienced in identifying and managing these concerns.. We coordinate with regulators and environmental, cultural, land service and legal professionals to achieve a design that balances the impact to the public, environment and cultural resources with the project goals.

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