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Subsea fluid delivery system and methodRelated Patent Categories: Pumps, ProcessesSubsea fluid delivery system and method description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20060083624, Subsea fluid delivery system and method. Brief Patent Description - Full Patent Description - Patent Application Claims
PRIORITY INFORMATION [0001] This application claims the benefit of U.S. Provisional Application No. 60/616,240, filed on Oct. 6, 2004. FIELD OF THE INVENTION [0002] The inventions relate to a system and method for delivering fluid under pressure for use subsea. BACKGROUND OF THE INVENTION [0003] Subsea devices often require fluids, e.g. hydraulic fluids or chemicals for injection and the like. These fluids are typically delivered to the device under pressure. As subsea devices are deployed deeper and deeper, the pressures required have increased. [0004] Existing installation workover control systems are limited in the projects on which they can be used, in part due to the pressure ratings of umbilicals used to provide fluids under pressure from a source of fluids, e.g. a surface vessel, to devices subsea that need that fluid. Deepwater trees, for example, will or currently need fluid pressures in the ranges that exceed 10,000 psi. [0005] Additionally, umbilicals from the surface currently need to contain a plurality of fluid conduits which increases cost and complexity. The greater the number of required conduits, the greater the cost associated with the umbilical. BRIEF DESCRIPTION OF THE DRAWINGS [0006] The various drawings supplied herein are representative of one or more embodiments of the present inventions. [0007] FIG. 1 is a planar view in of an exemplary system; [0008] FIG. 2 is a cross-sectional view of an exemplary conduit; [0009] FIG. 3 is a planar view of a second exemplary system; and [0010] FIG. 4 is a flowchart of an exemplary method. DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS OF THE INVENTIONS [0011] Referring now to FIG. 1, system 1 is adapted to provide fluid under pressure to a subsea device, e.g. a device adapted for use in an installation workover control system. In a preferred embodiment, system 1 comprises fluid source 10 located distally from seabed 100 and adapted to provide fluid 5 suitable for use with the subsea device, e.g. to provide a subsea installation workover function; fluid pressurizer 20 in fluid communication with fluid source 10, fluid pressurizer 20 adapted to pressurize fluid 5 to a first pressure; fluid pressure intensifier 30 adapted to be located subsea, fluid pressure intensifier 30 further adapted to receive fluid 5 at a first fluid pressure and output fluid 5 at a fluid pressure higher than the first fluid pressure; and fluid conduit 40 in fluid communication with fluid pressurizer 20 and fluid pressure intensifier 30. [0012] Fluid source 10 may be located on vessel 2 but does not have to be. In a preferred embodiment, fluid source 10 is located distally from seabed 100 such as near or at the water surface. Fluid 5 may be a control fluid, a tree chemical fluid, or the like, or a combination thereof. [0013] Fluid pressurizer 20 is adapted to provide a pressure substantially lower than the delivery pressure required for injection of fluid 5 to subsea device 110. Fluid pressurizer 20 may be located proximate the surface or subsea distally from fluid pressure intensifier 30 and may be part of fluid source 10, i.e. integrated with fluid source 10, or otherwise in fluid communication with fluid source 10 such as via fluid conduit 11. [0014] Fluid pressurizer 20 is in fluid communication with fluid pressure intensifier 30, which is located proximate seabed 100, such as via fluid conduit 40. In preferred embodiments, fluid pressure intensifier 30 may be located on seabed 100 or near seabed 110 such as on an ROV (not shown in the figures). Fluid pressurizer intensifier 30 is adapted to provide fluid 5 to one or more subsea devices, e.g. subsea device 110, at higher fluid pressure than fluid pressurizer 20 provides. In an embodiment, fluid pressure intensifier 30 is adapted to provide a pressure substantially higher than 10,000 PSI and, more preferably, in the range of around 15,000 to around 20,000 psi. [0015] In certain embodiments, fluid pressure intensifier 30 comprises a plurality of fluid pressure intensifiers 30 connected in series, parallel, or a combination thereof. One or more fluid pressure intensifiers 30 may utilize proportional hydraulic valves. [0016] In a preferred embodiment, fluid conduit 40 is an umbilical which may further comprise one or more fluid conduits 42, electrical power conduits 43, data conduits 44, or a combination thereof. [0017] System 1 may further comprise surface control panel 4 operatively in communication with fluid pressurizer 20, fluid pressure intensifier 30, or both. [0018] In an alternative embodiment, system 1 is adapted to provide an installation workover control system and comprises fluid source 10 located distally from seabed 100 and adapted to provide fluid 5 suitable for use with a subsea installation workover function; fluid pressurizer 20 in fluid communication with fluid source 10, fluid pressurizer 20 adapted to pressurize fluid 5 to a first pressure; fluid pressure intensifier 30 located at a surface location, fluid pressure intensifier 30 further adapted to receive fluid 5 at a first fluid pressure and output fluid 5 at a fluid pressure higher than the first fluid pressure; and fluid conduit 40 in fluid communication with fluid pressurizer 20 and fluid pressure intensifier 30. [0019] Fluid pressure intensifier 30 may be further adapted to be driven hydraulically from the surface. Continue reading about Subsea fluid delivery system and method... Full patent description for Subsea fluid delivery system and method Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Subsea fluid delivery system and method patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Subsea fluid delivery system and method or other areas of interest. ### Previous Patent Application: Hydraulically driven vehicle Next Patent Application: Control valve for variable displacement compressor Industry Class: Pumps ### FreshPatents.com Support Thank you for viewing the Subsea fluid delivery system and method patent info. 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