The subsea environment poses a set of technological challenges unlike anything that the surface can present.

As in the planning of any asset development, the decision-making process attempts to maximize asset value and to minimize costs without compromising safety and reliability. The cost analysis focuses on capital expenditures and operating expenses, and it also includes risks, or the potential costs of unforeseen events. The conditions driving these costs are numerous and interrelated, and they include reservoir-related factors including existing infrastructure, water depth, weather and currents, seabed conditions, cost of construction and decommissioning of permanent structures, time to first production, equipment reliability, well accessibility for future monitoring or intervention, and flow assurance – the ability to keep fluids flowing in the lines.

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