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公开(公告)号：EP3375975A1
公开(公告)日：2018-09-19
申请号：EP18169405.0
申请日：2011-11-07
摘要： A variable flow resistance system for use with a subterranean well can include a structure 90 which displaces in response to a flow of a fluid composition, whereby a resistance to the flow of the fluid composition changes in response to a change in a ratio of desired to undesired fluid in the fluid composition. Another system can include a structure 90 which rotates in response to flow of a fluid composition, and a fluid switch which deflects the fluid composition relative to at least two flow paths. A method of variably resisting flow in a subterranean well can include a structure displacing in response to a flow of a fluid composition, and a resistance to the flow of the fluid composition changing in response to a ratio of desired to undesired fluid in the fluid composition changing. Swellable materials and airfoils may be used in variable flow resistance systems.
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公开(公告)号：EP2780540B1
公开(公告)日：2017-09-06
申请号：EP11875961.2
申请日：2011-11-18
发明人： ZHAO, Liang
CPC分类号： E21B34/08 , E21B41/0078 , E21B43/12
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公开(公告)号：EP2785966B1
公开(公告)日：2019-04-24
申请号：EP12865829.1
申请日：2012-01-20
发明人： ZHAO, Liang , LOPEZ, Jean-Marc
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公开(公告)号：EP2776660B1
公开(公告)日：2018-05-02
申请号：EP11875323.5
申请日：2011-11-07
摘要： A variable flow resistance system for use with a subterranean well can include a structure which displaces in response to a flow of a fluid composition, whereby a resistance to the flow of the fluid composition changes in response to a change in a ratio of desired to undesired fluid in the fluid composition. Another system can include a structure which rotates in response to flow of a fluid composition, and a fluid switch which deflects the fluid composition relative to at least two flow paths. A method of variably resisting flow in a subterranean well can include a structure displacing in response to a flow of a fluid composition, and a resistance to the flow of the fluid composition changing in response to a ratio of desired to undesired fluid in the fluid composition changing. Swellable materials and airfoils may be used in variable flow resistance systems.
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公开(公告)号：EP2909430A1
公开(公告)日：2015-08-26
申请号：EP12890261.6
申请日：2012-12-21
CPC分类号： E21B34/10
摘要： Certain aspects of the present invention are directed to a liquid valve assembly that can be disposed in a wellbore through a fluid-producing formation. The liquid valve assembly can include a housing and a liquid valve. The housing can define an inner chamber and an opening adapted to allow fluid to flow between the inner chamber and a passageway. The liquid valve can be disposed in the inner chamber. The liquid valve can include a yield stress fluid. The yield stress fluid can prevent fluid from flowing between the inner chamber and the passageway.
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公开(公告)号：EP2780540A1
公开(公告)日：2014-09-24
申请号：EP11875961.2
申请日：2011-11-18
发明人： ZHAO, Liang
CPC分类号： E21B34/08 , E21B41/0078 , E21B43/12
摘要： Apparatus and methods for autonomously controlling fluid flow in a subterranean well are presented, and in particular for providing a fluid diode to create a relatively high resistance to fluid flow in one direction and a relatively low resistance to fluid flowing in the opposite direction. The diode is positioned in a fluid passageway and has opposing high resistance and low resistance entries. In one embodiment, the high resistance entry has a concave, annular surface surrounding an orifice and the low resistance entry has a substantially conical surface. The concave, annular surface of the high resistance entry preferably extends longitudinally beyond the plane of the orifice. In a preferred embodiment, the fluid will flow in eddies adjacent the concave, annular surface.
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公开(公告)号：EP2791465A1
公开(公告)日：2014-10-22
申请号：EP11877549.3
申请日：2011-12-16
CPC分类号： E21B34/08 , B01D21/265 , B01D45/12 , E21B43/12
摘要： Fluid flow influencer devices capable of affecting fluid flow for fluid selection are described. Fluid flow influencer devices may affect fluid flowing into a turbulence, such as a vortex, having a structure that is usable to restrict fluid flow in a flow path of a chamber by different amounts based on at least one property of the fluid. The fluid flow control device may be in an autonomous fluid selector, such as a diverter, a vortex-causing device, or a whisker. Fluid properties based on which the flow influencer device can select fluid can include fluid density, fluid velocity, fluid viscosity, and Reynolds number of the fluid flow.
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8.发明公开AUTONOMUS FLUID CONTROL DEVICE HAVING A MOVABLE VALVE PLATE FOR DOWNHOLE FLUID SELECTION 审中-公开具有移动阀板孔流体选择自主流体控制装置
公开(公告)号：EP2773842A1
公开(公告)日：2014-09-10
申请号：EP11874973.8
申请日：2011-10-31
发明人： LOPEZ, Jean-marc , ZHAO, Liang
CPC分类号： E21B34/08 , E21B43/12 , E21B2034/005 , F16K15/03
摘要： An apparatus and method are described for autonomously controlling flow of fluid in a subterranean well, where fluid flow is controlled based on a fluid characteristic, such as viscosity or density, which changes over time. Fluid flows into a vortex assembly where a centrifugal force is imparted to the fluid. A less viscous fluid will have a relatively greater velocity and centrifugal force than a more viscous fluid. The fluid exits the vortex chamber by both a vortex outlet and a peripheral outlet. An autonomous valve element moves between an open position, in which fluid flows freely through the peripheral outlet, and a closed position, in which fluid flow through the peripheral outlet is restricted. The valve element is moved by the centrifugal force of the fluid, such that a fluid having a higher centrifugal force moves the valve element to the closed position, thereby reducing the total fluid flow through the vortex assembly.
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公开(公告)号：EP2854988A1
公开(公告)日：2015-04-08
申请号：EP12877820.6
申请日：2012-05-29
CPC分类号： B01D35/28 , E21B41/00 , E21B43/082
摘要： Certain aspects and embodiments of the present invention are directed to a porous medium screen that can be disposed in a wellbore through a fluid- producing formation. The porous medium screen can include a porous medium and a retaining structure. The porous medium can be a material having one or more pores. The one or more pores can be adapted to allow a fluid to flow through the porous medium and to prevent one or more particles from flowing through the porous medium. The retaining structure can be adapted to retain the porous medium in a position circumferentially surrounding a section of a tubing string and to prevent expansion of the porous medium. The retaining structure can include a shroud and one or more stoppers. The shroud can be adapted to circumferentially surround the porous medium. Each stopper can be adapted to circumferentially surround the section of a tubing string at an edge of the porous medium.
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公开(公告)号：EP2776660A1
公开(公告)日：2014-09-17
申请号：EP11875323.5
申请日：2011-11-07
摘要： A variable flow resistance system for use with a subterranean well can include a structure which displaces in response to a flow of a fluid composition, whereby a resistance to the flow of the fluid composition changes in response to a change in a ratio of desired to undesired fluid in the fluid composition. Another system can include a structure which rotates in response to flow of a fluid composition, and a fluid switch which deflects the fluid composition relative to at least two flow paths. A method of variably resisting flow in a subterranean well can include a structure displacing in response to a flow of a fluid composition, and a resistance to the flow of the fluid composition changing in response to a ratio of desired to undesired fluid in the fluid composition changing. Swellable materials and airfoils may be used in variable flow resistance systems.
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