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23 条记录 (耗时 0.023 秒)

    Radial seal pressure reduction using internal pump
    3.
    发明授权
    Radial seal pressure reduction using internal pump 有权

    公开(公告)号：US10267117B2

    公开(公告)日：2019-04-23

    申请号：US15282788

    申请日：2016-09-30

    申请人： WEATHERFORD TECHNOLOGY HOLDINGS, LLC

    发明人： Thomas F. Bailey ,  James W. Chambers ,  Don M. Hannegan ,  Lev Ring

    IPC分类号： E21B33/08

    摘要： A pressure control device for sealing about a tubular at a wellsite can include a rotatable member, at least two radial seals that sealingly contact the rotatable member, at least two fluid chambers, one chamber being exposed to the rotatable member between the radial seals, and a pump that pumps fluid between the chambers in response to rotation of the rotatable member. A method of operating a pressure control device at a wellsite can include providing at least two chambers in a bearing assembly of the pressure control device, and regulating pressures in the chambers via a valve system in communication with both of the chambers.

    Automatic event detection and control while drilling in closed loop systems
    4.
    发明授权
    Automatic event detection and control while drilling in closed loop systems 有权

    公开(公告)号：US10060208B2

    公开(公告)日：2018-08-28

    申请号：US14628850

    申请日：2015-02-23

    申请人： Weatherford Technology Holdings, LLC

    发明人： Ferhat Gumus ,  Koray Kinik ,  Lev Ring

    IPC分类号： E21B21/08 ,  E21B7/00 ,  E21B47/06 ,  E21B44/00 ,  G05B19/04

    CPC分类号： E21B21/08 ,  E21B7/00 ,  E21B44/00 ,  E21B47/06 ,  G05B19/041 ,  G05B2219/45129

    摘要： Controlled pressure drilling of a borehole with a drilling system detects events and identifies the events as being one of a gas-at-surface event, a kick event, a high-pressure low-volume depletion event, and a gas expansion event. Parameters including flow-in, flow-out, density, and standpipe pressure are monitored. A volume increase is detected between the flow-in and flow-out, and an initiation point of the detected volume increase is identified. At this point, an event from the initiation point is identified based on the monitored parameters from the initiation point. To identify a kick event, for example, the standpipe pressure is determined to have increased from the initiation point without the density decreasing since the initiation point, and a cumulative volume value from the initiation point is determined to be above a first threshold. In response to the identified event, an action is initiated in the drilling system.

    Apparatus and method of zonal isolation
    6.
    发明授权
    Apparatus and method of zonal isolation 有权
    区域隔离的装置和方法

    公开(公告)号：US09551201B2

    公开(公告)日：2017-01-24

    申请号：US14156178

    申请日：2014-01-15

    申请人： Weatherford Technology Holdings, LLC

    发明人： Lev Ring ,  Varadaraju Gandikota

    IPC分类号： E21B33/12 ,  E21B33/124 ,  E21B23/06 ,  E21B43/10

    CPC分类号： E21B33/12 ,  E21B23/06 ,  E21B33/1208 ,  E21B33/124 ,  E21B43/103 ,  E21B43/105

    摘要： Methods and apparatus include an expandable packer having a tubing expanded to create a seal in an annulus surrounding the tubing. The tubing includes a non-uniform outer surface configured to cause formation of undulations in a diameter of the tubing upon expansion of the tubing. A plurality of expandable packers may be connected to a tubular string to isolate multiple zones in a wellbore. A production tubular equipped with multiple expandable packers may be installed in the tubular string. The expandable packers may also include non-uniform outer surfaces configured to form undulations upon expansion. The combination of tubular string and production tubular may be used in an enhanced oil recovery application such as injecting steam into a formation to enhance production.

    摘要翻译： 方法和装置包括具有膨胀以在围绕管道的环形空间中产生密封的管道的可膨胀封隔器。 管道包括非均匀的外表面，其构造成在管道膨胀时引起管道直径的起伏形成。 多个可膨胀封隔器可以连接到管状管柱以隔离井眼中的多个区域。 装配有多个可膨胀封隔器的生产管状体可以安装在管状管柱中。 可膨胀封隔器还可以包括构造成在膨胀时形成起伏的不均匀的外表面。 管状串和生产管的组合可用于增强的采油应用中，例如将蒸汽注入地层以增强生产。

    Automatic Event Detection and Control while Drilling in Closed Loop Systems
    7.
    发明申请
    Automatic Event Detection and Control while Drilling in Closed Loop Systems 审中-公开
    自动事件检测与控制，同时在闭环系统中钻井

    公开(公告)号：US20160245027A1

    公开(公告)日：2016-08-25

    申请号：US14628850

    申请日：2015-02-23

    申请人： Weatherford Technology Holdings, LLC

    发明人： Ferhat Gumus ,  Koray Kinik ,  Lev Ring

    IPC分类号： E21B21/08 ,  G05B19/04 ,  E21B44/00 ,  E21B7/00 ,  E21B47/06

    CPC分类号： E21B21/08 ,  E21B7/00 ,  E21B44/00 ,  E21B47/06 ,  G05B19/041 ,  G05B2219/45129

    摘要： Controlled pressure drilling of a borehole with a drilling system detects events and identifies the events as being one of a gas-at-surface event, a kick event, a high-pressure low-volume depletion event, and a gas expansion event. Parameters including flow-in, flow-out, density, and standpipe pressure are monitored. A volume increase is detected between the flow-in and flow-out, and an initiation point of the detected volume increase is identified. At this point, an event from the initiation point is identified based on the monitored parameters from the initiation point. To identify a kick event, for example, the standpipe pressure is determined to have increased from the initiation point without the density decreasing since the initiation point, and a cumulative volume value from the initiation point is determined to be above a first threshold. In response to the identified event, an action is initiated in the drilling system.

    摘要翻译： 具有钻井系统的钻孔的受控压力钻孔检测事件并将事件识别为气表面事件，踢脚事件，高压低体积耗尽事件和气体膨胀事件之一。 监测包括流入，流出，密度和立管压力的参数。 在流入和流出之间检测到体积增加，并且识别检测到的体积增加的起始点。 此时，基于来自起始点的监视参数来识别起始点的事件。 为了识别脚蹬事件，例如，确定立管压力从起始点开始增加，而不会从起始点开始密度下降，并且将来自起始点的累积体积值确定为高于第一阈值。 响应于所识别的事件，在钻井系统中启动动作。

    Drilling head with non-rotating annular seal assembly
    8.
    发明授权
    Drilling head with non-rotating annular seal assembly 有权

    公开(公告)号：US10190378B2

    公开(公告)日：2019-01-29

    申请号：US15221940

    申请日：2016-07-28

    申请人： WEATHERFORD TECHNOLOGY HOLDINGS, LLC

    发明人： Vahidin Alajbegovic ,  Lev Ring

    IPC分类号： E21B33/03 ,  E21B33/06 ,  E21B33/08

    摘要： A drilling head can include an annular seal assembly releasably secured in an outer housing, the annular seal assembly including an annular seal and an actuator that pressurizes a lubricant for delivery to an interior of the annular seal. A method can include positioning an annular seal in a drilling head, the annular seal including an inner liner having openings formed through a sidewall of the inner liner, and flowing a lubricant into an opening while the inner liner sealingly engages a tubular. In another method, the annular seal can have a minimum inner diameter for sealing engagement with a tubular, and a lubricant passage extending through the annular seal and intersecting an interior of the annular seal at a location spaced apart from the minimum inner diameter. A lubricant is flowed through the lubricant passage to the interior of the annular seal.