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30 条记录 (耗时 0.034 秒)

    Radial seal pressure reduction using internal pump
    1.
    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.

    Section mill and method for abandoning a wellbore
    3.
    发明授权
    Section mill and method for abandoning a wellbore 有权

    公开(公告)号：US11274514B2

    公开(公告)日：2022-03-15

    申请号：US17119857

    申请日：2020-12-11

    申请人： Weatherford Technology Holdings, LLC

    发明人： Richard J. Segura ,  Thomas F. Bailey ,  David J. Brunnert ,  Ram K. Bansal ,  Andrew Antoine

    IPC分类号： E21B10/32 ,  E21B29/00

    摘要： A mill for use in a wellbore includes a tubular housing having a bore therethrough, a plurality of pockets formed in a wall thereof, and a blade disposed in each pocket. Each blade includes a body having a first side opposite a second side, wherein the first side faces in a direction of rotation of the mill. The blade also includes a blade portion disposed on the first side of the body, wherein the blade portion has a first cutting face stepped relative to a second cutting face. Each blade is movable between a retracted position and an extended position, wherein a portion of the first side and the second side protrude from the housing in the extended position.

    Continuous flow drilling systems and methods
    9.
    发明授权
    Continuous flow drilling systems and methods 有权
    连续流量钻井系统和方法

    公开(公告)号：US09151124B2

    公开(公告)日：2015-10-06

    申请号：US14196026

    申请日：2014-03-04

    申请人： Weatherford Technology Holdings, LLC

    发明人： David Iblings ,  Thomas F. Bailey ,  Ram K. Bansal ,  Adrian Steiner ,  Michael J. Lynch ,  Simon J. Harrall

    IPC分类号： E21B21/00 ,  E21B19/16 ,  E21B21/10 ,  E21B21/12 ,  E21B34/00

    CPC分类号： E21B21/002 ,  E21B19/16 ,  E21B21/10 ,  E21B21/106 ,  E21B21/12 ,  E21B2034/005

    摘要： A method for drilling a wellbore includes drilling the wellbore by injecting drilling fluid into a top of a tubular string disposed in the wellbore at a first flow rate and rotating a drill bit. The tubular string includes: the drill bit disposed on a bottom thereof, tubular joints connected together, a longitudinal bore therethrough, a port through a wall thereof, and a sleeve operable between an open position where the port is exposed to the bore and a closed position where a wall of the sleeve is disposed between the port and the bore. The method further includes moving the sleeve to the open position; and injecting drilling fluid into the port at a second flow rate while adding a tubular joint(s) to the tubular string. The injection of drilling fluid into the tubular string is continuously maintained between drilling and adding the joint(s).

    摘要翻译： 一种用于钻井井的方法包括：通过将钻井流体以第一流量喷射到设置在井筒中的管状柱的顶部中并旋转钻头来钻井孔。 管柱包括：设置在其底部的钻头，连接在一起的管状接头，穿过其中的纵向孔，通过其壁的端口以及可在端口暴露于孔的打开位置和可关闭的位置之间操作的套筒 套筒的壁设置在端口和孔之间的位置。 该方法还包括将套筒移动到打开位置; 以及在第二流量下将钻井流体注入到所述端口中，同时向所述管状管道添加管状接头。 在钻孔和加入接头之间，连续地保持将钻井液注入管柱中。