DNV GL research paper on ‘all subsea’ solution

DNV GL launched a research paper exploring the viability of moving offshore oil and gas processing subsea, including the techno-economics of an ‘all subsea’ solution. The report addresses current limitations and highlights opportunities for subsea technology.

The paper compares a benchmark FPSO set-up with a hypothetical all-subsea field development solution. However, instead of making a direct comparison between the two alternatives, the paper adopts a stepwise approach, moving the various main parts of the processing from the topside to the seabed in nine steps. For each step, the report includes a business case assessment of whether the step enables new opportunities for the industry that other technological solutions cannot achieve or enhances efficiency relative to any other technical solution.

Principal researcher and lead author of the paper, Tore Kuhnle, said: Principal researcher and lead author of the paper, Tore Kuhnle, said: “Debates about the viability of ‘all subsea’ solutions can quickly become overwhelmed with complexity due to the interrelations and dependencies between the processing, power, control and safety subsystems, as well as the effects on the reservoir performance and commercial aspects. With our stepwise approach, one can evaluate the business case of subsea solutions progressively and with clarity. The industry has moved from ‘breaking boundaries’ to ‘cost cutting’ in recent years. In that respect, it is reassuring to see that subsea processing is both enabling and enhancing technology for brownfield applications.”

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