Subsea accumulator system

摘要

Embodiments of a subsea accumulator system are disclosed. The system includes a subsea skid structure, a pre-charged fluid accumulator mounted in the subsea skid structure and fluidly coupled to a flowline in the skid structure, and a subsea device coupled to the flowline to receive hydraulic fluid power from the pre-charged fluid accumulator. The system may include a fill port having a releasable connection to selectively couple with a hydraulic fluid supply separate from the skid structure. Certain embodiments may include a subsea pump, instead of a pre-charge, for delivering pressurized fluid to a piston in the accumulator, and multiple accumulators for mixing fluids or discharging the fluids sequentially.