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Digital valve for high pressure high flow applications

Show simple item record Badescu, Mircea Sherritt, Stewart Lewis, Derek Bao, Xiaoqi Bar-Cohen, Yoseph Hall, Jeffrey L. 2019-05-09T17:27:24Z 2019-05-09T17:27:24Z 2016-03-20
dc.identifier.citation SPIE Smart Structures/NDE 2016, Las Vegas, Nevada, March 20-24, 2016 en_US
dc.identifier.clearanceno 16-0783
dc.description.abstract To address the challenges, which are involved with the development of flow control valves that can meet the requirements of deep oil wells such as high pressure, high flow rate, limited power and limited space, the authors have conceived a novel design configuration [1]. This design consists of a digitalized flow control valve with multipath and multistage pressure reduction structures. Specifically, the valve is configured as a set of parallel flow paths from the inlet to the outlet. A choke valve controls the total flow rate by digitally opening different paths or different combination of the paths. Each path is controlled by a poppet cap valve basically operated in on-off states. The number of flow states is 2N where N is the number of flow paths. To avoid erosion from sand in the oil and high speed flow, the seal area of the poppet cap valve is located at a distance from the flow inlet away from the high speed flow and the speed is controlled to stay below a predefined erosion safe limit. The path is a multistage structure composed of a set of serial nozzles-expansion chambers that equally distribute the total pressure drop to each stage. The pressure drop of each stage and, therefore, the flow speed at the nozzles and expansion chambers is controlled by the number of stages. The paths have relatively small cross section and could be relatively long for large number of stages and still fit in the strict annular space limit of a typical downhole region of an oil well. The paper will present the design configuration, analysis and preliminary test results. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA: Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2016 en_US
dc.subject Flow control en_US
dc.subject digital valve en_US
dc.subject downhole en_US
dc.subject oil well en_US
dc.title Digital valve for high pressure high flow applications en_US
dc.type Preprint en_US

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