Fibre Optic Cable
Infrastructure
Provides a communication channel between the subsea infrastructure and the FPSO (and beyond)
Development Concept
The Barossa offshore development area encompasses petroleum retention lease NT/RL5 (the Barossa Field), where initial development would occur, and potential future phased development in the smaller Caldita Field to the south in retention lease NT/RL6.
The development concept notionally involves drilling nine subsea wells in two phases (six in the first phase).
Barossa Field Infrastructure
Click on the icons below to learn what each piece of subsea equipment does
FPSO
Infrastructure
Floating Production Storage and Offloading facility: separates the reservoir fluids into separate gas and condensate streams. Condensate is transferred directly to specialised tankers for export, and dry gas is treated and sent for onshore processing via the Gas Export Pipeline.
Gas Export Pipeline
Infrastructure
Transports the export quality dry gas from the FPSO to the tie-in point
Manifold
Infrastructure
Performs routing/isolating of the subsea wells to/from the designated pipelines
Mooring Lines/Anchors
Infrastructure
Securing the Barossa FPSO in the designated position within the field
Production Flowline
Infrastructure
Transports raw well gas from the subsea wells to the FPSO
Riser Base Manifold
Infrastructure
Performs routing of the production gas from a subsea pipeline into a riser
Risers
Infrastructure
Connect the underwater pipeline to the FPSO through its turret
Service Flowline
Infrastructure
Used primarily in support of well start-up and shutdown operations
Static Umbilical
Infrastructure
Extension to the dynamic umbilical: delivers the necessary controls and utility fluids required for subsea operations
Well Jumper
Infrastructure
Pipe spool that connects the Xmas tree to the production manifold
Xmas Trees
Infrastructure
Contain the control and isolation valves and all instrumentations to enable operation and maintenance of the subsea wells
Map Key
Infrastructure
Infrastructure
Fibre Optic Cable
Provides a communication channel between the subsea infrastructure and the FPSO (and beyond)
Infrastructure
FPSO
Floating Production Storage and Offloading facility: separates the reservoir fluids into separate gas and condensate streams. Condensate is transferred directly to specialised tankers for export, and dry gas is treated and sent for onshore processing via the Gas Export Pipeline.
Infrastructure
Gas Export Pipeline
Transports the export quality dry gas from the FPSO to the tie-in point
Infrastructure
Manifold
Performs routing/isolating of the subsea wells to/from the designated pipelines
Infrastructure
Mooring Lines/Anchors
Securing the Barossa FPSO in the designated position within the field
Infrastructure
Production Flowline
Transports raw well gas from the subsea wells to the FPSO
Infrastructure
Riser Base Manifold
Performs routing of the production gas from a subsea pipeline into a riser
Infrastructure
Risers
Connect the underwater pipeline to the FPSO through its turret
Infrastructure
Service Flowline
Used primarily in support of well start-up and shutdown operations
Infrastructure
Static Umbilical
Extension to the dynamic umbilical: delivers the necessary controls and utility fluids required for subsea operations
Infrastructure
Well Jumper
Pipe spool that connects the Xmas tree to the production manifold
Infrastructure
Xmas Trees
Contain the control and isolation valves and all instrumentations to enable operation and maintenance of the subsea wells
FPSO Facility
The Floating Production Storage and Offloading facility (FPSO) will be a ship shaped facility and will separate the reservoir fluids extracted from the Barossa Field into separate gas and condensate streams. The condensate will be exported directly from the FPSO to offtake tankers. The gas will be dehydrated, treated for partial CO2 removal, and transported via a gas export pipeline for onshore processing. The processing, storage and offtake (export) facilities (i.e. topside facilities) will all be mounted to the hull of the FPSO.
The FPSO will be permanently moored to the seabed from the turret and built to withstand a 10,000-year storm.
SUBSEA PRODUCTION SYSTEM (SPS)
The SPS controls delivery of gas from the wells to the FPSO. It comprises Xmas trees which are connected to the top of the well to control the gas flow; production manifolds that direct gas and condensate into the flowlines; diverless connectors which join the subsea flowline network together; and production control system which commands the subsea valves and monitors instrumentation.
SUBSEA UMBILICALS, RISERS, AND FLOWLINES (SURF)
The SURF scope involves equipment which connects the development wells to the FPSO and FPSO to the export pipeline. Umbilicals provide the necessary hydraulic and electrical power, communications and chemical injection capability required for subsea operations. Flowlines transport raw gas and fluids from the subsea wells to the risers. Risers connect the infield flowlines and export pipeline situated on the seabed to the turret on the FPSO.
GAS EXPORT PIPELINE (GEP)
Dry gas will be transported from the FPSO via a new 260km pipeline (GEP) to a tie‐in point on the existing Bayu‐Undan pipeline (approximately 130km offshore from Darwin). A pipelay vessel which welds 12m long joints of pipe together will install the GEP by laying the pipe onto the seabed. The installed pipeline is then connected to the risers at the FPSO on one end, and the Bayu‐Undan pipeline at the other end using spools.
FIBRE OPTIC CABLE
Multiple options are being investigated to provide fibre optic telecommunications to the FPSO; including tie-in to the existing offshore fibre infrastructure in the region, and installation of a dedicated Barossa system. The fibre optic cable will provide a reliable and stable high-speed data service that allows effective and efficient operations at the FPSO.
See the interactive map at the top of the page to learn about the equipment.