The Process
SEA Global provided front-end engineering design (FEED), detailed design engineering, procurement, and construction support for this deepwater tie-back system. The execution framework encompassed assessing seabed conditions to optimize routing, ensuring continuous flow assurance with corrosion-resistant alloy (CRA) material selection, and delivering complete mechanical and installation engineering strategies for complex subsea environments. The technical requirements also covered structural engineering for robust S-lay and J-lay configurations and diverless connection setups, designing flexible subsea jumpers and flying leads, and implementing systems for control umbilicals and replacement power cables. In addition, technical documentation, specifications, and scope definitions were supplied to facilitate procurement activities and contractor coordination.
Reservoir Temperature
145–150 °C
Water Depth Deployment
1,000m
Flowline Diameter
12-inch
Flowlines Lengths
14 km & 3.7 km
Medium Fluid Type
Multiphase (gas and condensate)
Subsea Structures
6 Flowlines and Termination Structures (FLETs)
Scope of Work
Routing and Geotechnical Risk Evaluation
Assessed seabed conditions and optimized pipeline routing to minimise geohazard risks and reduce construction complexity and cost.
Flow Assurance and Materials Selection (CRA)
Ensured uninterrupted gas flow under all operational scenarios and selected corrosion-resistant materials to maintain long-term pipeline integrity.
Support to Procurement Activities
Supplied technical documentation, specifications, and engineering input to support procurement and vendor selection processes.
Subsea Jumpers, Flying Leads and Termination Structures
Engineered flexible subsea links and termination assemblies to connect infrastructure components, maintaining operational efficiency, flow assurance, and system modularity.
Mechanical and Installation Engineering
Delivered mechanical design and installation strategies, including analysis of offshore conditions to ensure safe and efficient system deployment in 1000m water depth.
Subsea Structures and Diverless Connection Systems
Designed robust S-lay and J-lay subsea structures and vertical tie-in jumpers improving safety and reliability.
Support to Contractor Engagement
Assisted in contractor coordination and engagement by providing engineering guidance, scope definition, and interface management.
Umbilicals, Controls, and Replacement Power Cables
Provided technical solutions for umbilical systems, subsea control networks, and replacement of essential power cables for continuous operability.
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