PROVEN EXCELLENCE

Macedon LPO Project

Woodside Energy Global
| Western Australia

Project Overview

Client
Woodside Energy Global
Dates
Feb 2021 to Mar 2024
Location
Onslow, Western Australia
Scope

Concept / Study phase
FEED
Execute: Detailed Design, procurement, construction management & commissioning

The Macedon Gas Plant is a 220TJ/d domestic gas plant which supplies the Dampier to Bunbury Natural Gas Pipeline (DBNGP) in Onslow, WA and has been in operation since 2014. The Macedon Low Pressure Operation (LPO) Project includes installation of a new Front End Compressor (FEC) and other modifications to the existing Macedon Gas Plant to allow the plant to operate at lower gas arrival pressures, extending the field life and maximising reservoir recovery for Woodside.

Enscope has been involved in the project from study phase through to project execution. Enscope has studied multiple low cost development options with the most favourable selected by Woodside and taken forward into Front End Engineering and Design (FEED) phase. At the conclusion of the Enscope FEED work, Woodside was able to take a Final Investment Decision (FID) and bring the project into execution.

The project scope includes installation of 1 x 100% Solar Turbines Taurus 70 and C51 Front End Compressor (FEC), procurement of ancillary items, structural works and new compressor access platforms and associated plant tie-ins within the live Macedon Gas Plant. Enscope are providing detailed design, construction management, completions support and commissioning services as part of the execution phase.

ROLES & SERVICES

Engaged by Woodside to deliver:
Concept / Study Phase – Assessed multiple low cost development options (technical / commercial) to allow operation of Macedon plant at lower pressures whilst maximising flow rate and gas recovered.
FEED – Multi-discipline FEED phase to mature design to allow Woodside to take a FID for the project.
Execute – Detailed design for project scope.
Procurement of ancillary items including pipe & fittings, valves, cable, instrumentation, electrical
equipment, control system upgrades and other miscellaneous items.
Construction management.
Completions support.
Commissioning services.

KEY CHALLENGES

Design of a fit-for-purpose front end compression solution and plant tie-ins with no major outages within a live operating gas plant (brownfields environment)
Delivery of major compressor package and other ancillary procurement items with post-COVID supply chain pressures.
Ensuring construction and commissioning execution with minimal impact to operations in a brownfield environment.

MAJOR ACHIEVEMENTS

Value add engineering through Enscope’s involvement from study/concept phase throughout the project life cycle to project handover.
Significant cost reduction and project execution optimisations were achieved via a collaborative approach with Enscope, Woodside and other project contractors and sub-contractors.

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