Subsea actuation system

A subsea drilling, production or processing actuation system comprising a variable speed electric motor (10) adapted to be supplied with a current, a reversible hydraulic pump (8, 28) driven by the motor, a hydraulic piston assembly (92, 101, 1 1 1, 121, 131 ) connected to the pump and comprising a...

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Bibliographische Detailangaben
Hauptverfasser:	GEIGER DAVID, SCHEFFLER RAYMOND S
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS HEATING HYDRAULICS OR PNEUMATICS IN GENERAL LIGHTING MECHANICAL ENGINEERING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A subsea drilling, production or processing actuation system comprising a variable speed electric motor (10) adapted to be supplied with a current, a reversible hydraulic pump (8, 28) driven by the motor, a hydraulic piston assembly (92, 101, 1 1 1, 121, 131 ) connected to the pump and comprising a first chamber (2), a second chamber (3) and a piston (4) separating the first and second chambers and configured to actuate a valve (91 ) in a subsea system, a fluid reservoir (14) connected to the pump and the hydraulic piston assembly, the pump, hydraulic piston assembly and reservoir connected in a substantially closed hydraulic system, and a pressure compensator (13, 65) configured to normalize pressure differences between outside the hydraulic system and inside the hydraulic system.