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14 条记录 (耗时 0.022 秒)

    Cement pulsation for subsea wellbore
    4.
    发明授权
    Cement pulsation for subsea wellbore 有权
    海底井眼水泥脉动

    公开(公告)号：US09416620B2

    公开(公告)日：2016-08-16

    申请号：US14634276

    申请日：2015-02-27

    申请人： Weatherford Technology Holdings, LLC

    发明人： Don M. Hannegan

    IPC分类号： E21B33/05 ,  E21B33/134 ,  E21B33/14 ,  E21B19/09 ,  E21B21/10 ,  E21B21/08 ,  E21B19/00 ,  E21B33/12 ,  E21B34/06 ,  E21B28/00

    CPC分类号： E21B33/143 ,  E21B19/002 ,  E21B28/00 ,  E21B33/12 ,  E21B33/14 ,  E21B34/06

    摘要： A method for cementing a tubular string into a wellbore from a drilling unit includes: running the tubular string into the wellbore using a workstring; hanging the tubular string from a wellhead or from a lower portion of a casing string set in the wellbore; and pumping cement slurry through the workstring and tubular string and into an annulus formed between the tubular string and the wellbore. The method further includes, during thickening of the cement slurry: circulating a liquid or mud through a loop closed by a seal engaged with an outer surface of the workstring, the closed loop being in fluid communication with the annulus, and periodically choking the liquid or mud, thereby pulsing the cement slurry.

    摘要翻译： 一种用于将管状柱体从钻井单元固定到井筒中的方法包括：使用工作绳将管状柱体运送到井眼中; 将管状柱从井口或从设置在井筒中的套管柱的下部悬挂; 并且将水泥浆泵送通过工作串和管柱并进入形成在管柱和井眼之间的环形空间中。 该方法还包括：在增稠水泥浆期间：使液体或泥浆循环通过与工作绳的外表面接合的密封闭合的环路，闭环与环空间流体连通，并周期性地阻塞液体或 泥浆，从而脉动水泥浆。

    MARINE DIVERTER SYSTEM WITH REAL TIME KICK OR LOSS DETECTION
    5.
    发明申请
    MARINE DIVERTER SYSTEM WITH REAL TIME KICK OR LOSS DETECTION 有权
    海上潜水员系统与实时踢或损失检测

    公开(公告)号：US20150330205A1

    公开(公告)日：2015-11-19

    申请号：US14710790

    申请日：2015-05-13

    申请人： Weatherford Technology Holdings, LLC

    发明人： Lev Ring ,  Don M. Hannegan

    IPC分类号： E21B47/00 ,  E21B47/10 ,  E21B19/00 ,  E21B21/08 ,  E21B15/02 ,  E21B17/01

    CPC分类号： E21B21/08 ,  E21B21/001 ,  E21B33/076 ,  E21B33/085

    摘要： The disclosure relates to a system and method for determining whether a kick or loss has occurred from a well in real time, wherein the well has a marine diverter having a rotating control device. The marine diverter system may measure flow rate in real time of a drilling fluid entering the wellbore and provide a means of measuring flow rate of the drilling fluid out of the wellbore and riser. The marine diverter system may further determine displacement and velocity of displacement of rig heave motion in real time and use the foregoing steps, given a known internal diameter of the riser and a known external diameter of a drill pipe, and employing a drilling fluid volume balance equation: (Volumetric flow rate-in)−(Volumetric flow rate-out)−(Change in riser annular Volume per unit time)=X, to determine whether the kick or loss has occurred in real time.

    摘要翻译： 本公开涉及一种用于确定实时地从井中是否发生踢或者损失的系统和方法，其中井具有具有旋转控制装置的海洋分流器。 海洋分流器系统可以测量进入井眼的钻井液的实时流量，并提供测量钻井流体离开井眼和立管的流量的方法。 考虑到提升管的已知内径和钻杆的已知外径，并采用钻井液体积平衡，船用分水器系统可以进一步确定钻机起重运动的位移和速度，并使用上述步骤 方程式：（体积流量输入） - （体积流出速率） - （单位时间内立管环形体积的变化）= X，以确定是否实时发生踢或摔。

    Low profile rotating control device
    6.
    发明授权
    Low profile rotating control device 有权

    公开(公告)号：US10087701B2

    公开(公告)日：2018-10-02

    申请号：US14496681

    申请日：2014-09-25

    申请人： Weatherford Technology Holdings, LLC

    发明人： Thomas F Bailey ,  James W. Chambers ,  Don M. Hannegan ,  David R. Woodruff

    IPC分类号： E21B33/03 ,  E21B33/08 ,  E21B21/10 ,  E21B33/06 ,  E21B7/02 ,  E21B21/00

    摘要： A system and method is provided for a low profile rotating control device (LP-RCD) and its housing mounted on or integral with an annular blowout preventer seal, casing, or other housing. The LP-RCD and LP-RCD housing can fit within a limited space available on drilling rigs. An embodiment allows a LP-RCD to be removably disposed with a LP-RCD housing by rotating a bearing assembly rotating plate. A sealing element may be removably disposed with the LP-RCD bearing assembly by rotating a seal retainer ring. Alternatively, a sealing element may be removably disposed with the LP-RCD bearing assembly with a seal support member threadedly attached with the LP-RCD bearing assembly. The seal support member may be locked in position with a seal locking ring removably attached with threads with the LP-RCD bearing assembly over the seal support member. Spaced apart accumulators may be disposed radially outward of the bearings in the bearing assembly to provide self lubrication to the bearings.

    Radial seal pressure reduction using internal pump
    10.
    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.