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Subsea Electrical System

Definition:Subsea Electrical System” refers to all the solutions to transport and distribute electrical power from the land or an Offshore operating unit, such as platform or FPSO, to supply seabed operating units like compressors, pumps, valves, etc…


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 Normally electricity and water do not fit too well together, so it may look strange to consider such solutions using an entire Subsea Electrical System. But the costs of the platforms or FPSOs are pretty high and only affordable for large offshore fields and we know that around these large fields there are numerous pockets of Oil & Gas that could be developed as soon as an economical solution could apply. That is where the Subsea Electrical System finds its first application to explore all the satellites reservoirs around a platform or a FPSO. If the distance is today economically limited to 50 – 100 km around the source of supply, technically the engineers can go much further. In practice it means that in extending this distance it become possible to develop offshore fields only from shore.

But there are also other applications coming up, as in Norway where the hydro power can provide all the energy needed to develop Oil & Gas fields without producing CO² emissions. So not only the Subsea Electrical System would reduce costs but in addition it would contribute to produced clean Oil & Gas.

Another interesting situation is where the oil fields produce a lot of associated gas like in pre-salt reservoirs in Brazil. This gas cannot be just flared any more and pipeline or floating LNG remain at high costs. Then a solution is to use it on site to produce power and then supply the Subsea Electrical System

For more information and data about oil and gas and petrochemical projects go to Project Smart Explorer

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