All-electric subsea initiatives started some years ago and despite the fact that the main technology components are available and field proven, the adoption of an all-electric system solution is still a challenge for both Operators and Suppliers. All-electric has the potential to make subsea systems cleaner, fully digital and in addition enables simplification of field developments. Furthermore, it makes it possible to decrease the carbon footprint of subsea fields by allowing the use of renewable energy as complete subsea fields can be monitored and controlled via electrical signals. NOV’s state-of-the-art subsea storage system enables distributed and/or centralized chemicals, ammonia and oil/condensate storage systems, which significantly decreases the umbilical and topside facilities costs.
Brownfield assets typically have space limitations in their topside installations (platform or FPSO) therefore the subsea storage system represents a key development block that enables unlimited additional capacity for storing specific fluids. This technology allows storage units nearby additional/future wells, thus enabling distributed field developments. For greenfield developments, NOV’s subsea storage system provides flexibility to have the required chemicals stored subsea permitting the implementation of unmanned production platforms where personnel on-deck shall be avoided.
All-electric subsea storage system enables the development of fully electric subsea fields, eliminating the need for hydraulic fluids subsea, chemical storage at topside facilities, hydraulic power units, hydraulic and chemical lines in umbilical, accumulators and large hydraulic actuators, resulting in an overall simplification from topside to subsea. This paper will present this synergy and technology status.