In a sector that is seeing unprecedented levels of activity, the opportunity to assess skill sets to take an integrated approach to subsea system design can be challenging. Contracting strategies that compartmentalise engineering scopes at any stage of the project lifecycle also require a high level of interface and project management. An informed methodology ensures a holistic approach to subsea design and interfaces is undertaken. Many challenges to subsea design are influenced by other disciplines such as reservoir, production technology, process, flow assurance and facilities engineering. Traditionally these considerations are outside of subsea engineering scopes and are controlled at the next level in the supply chain, or within other designers or contractors. This paper considers not only the regional challenges to pipeline and riser design in the Australian region, but also how the inclusion of an integrated approach encompassing multi-disciplined teams allows a more informed outcome. Using these highly skilled teams, this approach can: • Reduce interface management requirements; • Reduce design cycles; • Create optimised solutions within a shorter timescale. This has the potential to reduce overall CAPEX and OPEX costs by identifying value and reducing uncertainties in key areas. This adds significant value in the current climate of extended procurement lead times and resource constraints. Examples of current projects demonstrating how this approach can be applied in concept selection through to detailed design are described. Practical examples of how the possible design outcomes have been assessed using this approach are detailed. Considerations of how key factors such as subsurface, field layout, architecture, materials selection, operability, construction and HSE influence pipeline and riser design are also discussed.

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