Alternating flow resistance increases and decreases for propagating pressure pulses in a subterranean well
    81.
    发明授权
    Alternating flow resistance increases and decreases for propagating pressure pulses in a subterranean well 有权
    交替流阻对地下井中传播压力脉冲的增加和减小

    公开(公告)号:US08893804B2

    公开(公告)日:2014-11-25

    申请号:US12792095

    申请日:2010-06-02

    IPC分类号: E21B34/08 E21B34/06

    摘要: A method of propagating pressure pulses in a well can include flowing a fluid composition through a variable flow resistance system which includes a vortex chamber having at least one inlet and an outlet, a vortex being created when the fluid composition spirals about the outlet, and a resistance to flow of the fluid composition alternately increasing and decreasing. The vortex can be alternately created and dissipated in response to flowing the fluid composition through the system. A well system can include a variable flow resistance system which propagates pressure pulses into a formation in response to flow of a fluid composition from the formation.

    摘要翻译: 在井中传播压力脉冲的方法可以包括使流体组合物流过可变流阻系统,该系统包括具有至少一个入口和出口的涡流室,当流体组合物围绕出口螺旋时产生的涡流,以及 液体组合物的流动阻力交替增加和减少。 响应于使流体组合物流过系统,涡流可以交替地产生和消散。 井系统可以包括可变流阻系统,其响应于来自地层的流体组合物的流动将压力脉冲传播到地层中。

    Systems and Methods of Positive Indication of Actuation of a Downhole Tool
    82.
    发明申请
    Systems and Methods of Positive Indication of Actuation of a Downhole Tool 有权
    井下工具致动指示的系统和方法

    公开(公告)号:US20140231071A1

    公开(公告)日:2014-08-21

    申请号:US13770349

    申请日:2013-02-19

    IPC分类号: E21B47/10

    摘要: Disclosed are systems and methods of positive indication of the proper actuation of a downhole tool. One system includes a work string providing a flow path therein, a downhole tool coupled to the work string and having a body fluidly coupled to the flow path, an indicator chamber defined in the body and configured to retain a substance therein until the downhole tool is actuated, whereupon the indicator chamber becomes exposed and the substance is released into the flow path, and an optical computing device in optical communication with the flow path and configured to detect a characteristic of the substance in the flow path and communicate a signal when the characteristic is detected, the signal being indicative that the downhole tool has been actuated.

    摘要翻译: 公开了正确指示井下工具的正确致动的系统和方法。 一个系统包括在其中提供流动路径的工作串,连接到工作串并具有流体地联接到流动路径的主体的井下工具,限定在主体中并构造成将物质保持在其中的指示器室,直到井下工具 由此指示器室暴露并且物质被释放到流动路径中,以及光学计算设备,其与流动路径光学通信并且被配置为在流路中检测物质的特性并且当特性 被检测到,该信号表示井下工具已被致动。

    METHOD AND APPARATUS FOR CONTROLLING FLUID FLOW IN AN AUTONOMOUS VALVE USING A STICKY SWITCH
    83.
    发明申请
    METHOD AND APPARATUS FOR CONTROLLING FLUID FLOW IN AN AUTONOMOUS VALVE USING A STICKY SWITCH 有权
    用自动开关阀控制流体流动的方法和装置

    公开(公告)号:US20140048280A9

    公开(公告)日:2014-02-20

    申请号:US13438872

    申请日:2012-04-04

    IPC分类号: E21B34/08

    CPC分类号: E21B43/12 E21B43/14

    摘要: Apparatus and methods are described for autonomously controlling fluid flow in a tubular in a wellbore. A fluid is flowed through an inlet passageway into a biasing mechanism. A fluid flow distribution is established across the biasing mechanism. The fluid flow distribution is altered in response to a change in the fluid characteristic over time. In response, fluid flow through a downstream sticky switch assembly is altered, thereby altering fluid flow patterns in a downstream vortex assembly. The method “selects” based on a fluid characteristic, such as viscosity, density, velocity, flow rate, etc. The biasing mechanism can take various forms such as a widening passageway, contour elements along the biasing mechanism, or a curved section of the biasing mechanism passageway. The biasing mechanism can include hollows formed in the passageway wall, obstructions extending from the passageway wall, fluid diodes, Tesla fluid diodes, a chicane, or abrupt changes in passageway cross-section.

    摘要翻译: 描述了用于自主控制井眼中的管中的流体流动的装置和方法。 流体通过入口通道流入偏压机构。 跨越偏置机构建立流体流动分布。 响应于流体特性随时间的变化而改变流体流动分布。 作为响应,通过下游粘性开关组件的流体流动被改变,从而改变下游涡流组件中的流体流动模式。 该方法基于诸如粘度,密度,速度,流量等的流体特性来“选择”。偏置机构可以采取各种形式,例如加宽通道,沿着偏压机构的轮廓元件或者弯曲部分 偏置机构通道。 偏压机构可以包括形成在通道壁中的中空部,从通道壁延伸的障碍物,流体二极管,特斯拉流体二极管,通道或通道横截面的突然变化。

    System and method for downhole communication
    84.
    发明授权
    System and method for downhole communication 失效
    井下通信系统和方法

    公开(公告)号:US08636062B2

    公开(公告)日:2014-01-28

    申请号:US12969379

    申请日:2010-12-15

    IPC分类号: E21B47/00 E21B47/12

    CPC分类号: E21B47/12 E21B47/091

    摘要: A method of servicing a wellbore extending from a surface and penetrating a subterranean formation is provided. The method comprises placing a assembly in the wellbore, wherein the assembly comprises at least a first downhole tool, a signal receiver subassembly, and a conveyance between the first downhole tool and the surface. The method further comprises the signal receiver subassembly receiving a first signal generated by contact between the wellbore and the assembly and initiating a first function of the first downhole tool based on the first signal.

    摘要翻译: 提供了一种维护从表面延伸并穿透地层的井眼的方法。 该方法包括将组件放置在井眼中,其中组件至少包括第一井下工具,信号接收器子组件以及第一井下工具与表面之间的输送。 该方法还包括信号接收器子组件,其接收由井筒和组件之间的接触产生的第一信号,并且基于第一信号启动第一井下工具的第一功能。

    Method and apparatus for controlling fluid flow using movable flow diverter assembly

    公开(公告)号:US08616290B2

    公开(公告)日:2013-12-31

    申请号:US13441995

    申请日:2012-04-09

    IPC分类号: E21B34/06

    CPC分类号: E21B34/08 E21B43/12

    摘要: Apparatus and methods for controlling the flow of fluid, such as formation fluid, through an oilfield tubular positioned in a wellbore extending through a subterranean formation. Fluid flow is autonomously controlled in response to change in a fluid flow characteristic, such as density or viscosity. A fluid diverter is movable between an open and closed position in response to fluid density change and operable to restrict fluid flow through a valve assembly inlet. The diverter can be pivotable, rotatable or otherwise movable in response to the fluid density change. The diverter is operable to control a fluid flow ratio through two valve inlets. The fluid flow ratio is used to operate a valve member to restrict fluid flow through the valve.

    METHOD AND APPARATUS FOR CONTROLLING FLUID FLOW USING MOVABLE FLOW DIVERTER ASSEMBLY
    86.
    发明申请
    METHOD AND APPARATUS FOR CONTROLLING FLUID FLOW USING MOVABLE FLOW DIVERTER ASSEMBLY 有权
    使用可移动流量分流器组件控制流体流动的方法和装置

    公开(公告)号:US20130092393A1

    公开(公告)日:2013-04-18

    申请号:US13442021

    申请日:2012-04-09

    IPC分类号: E21B34/08

    CPC分类号: E21B34/08 E21B43/12

    摘要: Apparatus and methods for controlling the flow of fluid, such as formation fluid, through an oilfield tubular positioned in a wellbore extending through a subterranean formation. Fluid flow is autonomously controlled in response to change in a fluid flow characteristic, such as density or viscosity. In one embodiment, a fluid diverter is movable between an open and closed position in response to fluid density change and operable to restrict fluid flow through a valve assembly inlet. The diverter can be pivotable, rotatable or otherwise movable in response to the fluid density change. In one embodiment, the diverter is operable to control a fluid flow ratio through two valve inlets. The fluid flow ratio is used to operate a valve member to restrict fluid flow through the valve.

    摘要翻译: 用于控制诸如地层流体的流体流过位于穿过地下地层的井眼中的油田管的装置和方法。 流体流动是根据流体流动特性(如密度或粘度)的变化而自主控制的。 在一个实施例中,流体转向器可响应于流体密度变化而在打开和关闭位置之间移动,并可操作以限制流过阀组件入口的流体。 分流器可以响应于流体密度变化而可枢转,可旋转或以其它方式移动。 在一个实施例中,分流器可操作以通过两个阀入口控制流体流量比。 流体流量比用于操作阀构件以限制流过阀的流体流动。

    METHOD AND APPARATUS FOR CONTROLLING FLUID FLOW USING MOVABLE FLOW DIVERTER ASSEMBLY

    公开(公告)号:US20130092392A1

    公开(公告)日:2013-04-18

    申请号:US13441995

    申请日:2012-04-09

    IPC分类号: E21B34/08

    CPC分类号: E21B34/08 E21B43/12

    摘要: Apparatus and methods for controlling the flow of fluid, such as formation fluid, through an oilfield tubular positioned in a wellbore extending through a subterranean formation. Fluid flow is autonomously controlled in response to change in a fluid flow characteristic, such as density or viscosity. In one embodiment, a fluid diverter is movable between an open and closed position in response to fluid density change and operable to restrict fluid flow through a valve assembly inlet. The diverter can be pivotable, rotatable or otherwise movable in response to the fluid density change. In one embodiment, the diverter is operable to control a fluid flow ratio through two valve inlets. The fluid flow ratio is used to operate a valve member to restrict fluid flow through the valve.

    METHOD AND APPARATUS FOR CONTROLLING FLUID FLOW USING MOVABLE FLOW DIVERTER ASSEMBLY

    公开(公告)号:US20130092382A1

    公开(公告)日:2013-04-18

    申请号:US13441632

    申请日:2012-04-06

    IPC分类号: E21B34/08

    CPC分类号: E21B34/08 E21B43/12

    摘要: Apparatus and methods for controlling the flow of fluid, such as formation fluid, through an oilfield tubular positioned in a wellbore extending through a subterranean formation. Fluid flow is autonomously controlled in response to change in a fluid flow characteristic, such as density or viscosity. In one embodiment, a fluid diverter is movable between an open and closed position in response to fluid density change and operable to restrict fluid flow through a valve assembly inlet. The diverter can be pivotable, rotatable or otherwise movable in response to the fluid density change. In one embodiment, the diverter is operable to control a fluid flow ratio through two valve inlets. The fluid flow ratio is used to operate a valve member to restrict fluid flow through the valve.

    METHOD AND APPARATUS FOR CONTROLLING FLUID FLOW USING MOVABLE FLOW DIVERTER ASSEMBLY

    公开(公告)号:US20130092381A1

    公开(公告)日:2013-04-18

    申请号:US13441985

    申请日:2012-04-09

    IPC分类号: E21B34/08

    CPC分类号: E21B34/08 E21B43/12

    摘要: Apparatus and methods for controlling the flow of fluid, such as formation fluid, through an oilfield tubular positioned in a wellbore extending through a subterranean formation. Fluid flow is autonomously controlled in response to change in a fluid flow characteristic, such as density or viscosity. In one embodiment, a fluid diverter is movable between an open and closed position in response to fluid density change and operable to restrict fluid flow through a valve assembly inlet. The diverter can be pivotable, rotatable or otherwise movable in response to the fluid density change. In one embodiment, the diverter is operable to control a fluid flow ratio through two valve inlets. The fluid flow ratio is used to operate a valve member to restrict fluid flow through the valve.