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    APPARATUS FOR AND METHOD OF DRILLING A SUBTERRANEAN BOREHOLE
    5.
    发明授权
    APPARATUS FOR AND METHOD OF DRILLING A SUBTERRANEAN BOREHOLE 有权
    DEVICE AND METHOD FOR钻探地下井

    公开(公告)号：EP2414619B1

    公开(公告)日：2014-01-29

    申请号：EP10712082.6

    申请日：2010-03-31

    申请人： Managed Pressure Operations Pte. Ltd

    发明人： LEUCHTENBERG, Christian

    IPC分类号： E21B21/08

    CPC分类号： E21B21/08

    摘要： A control apparatus for use in controlling the fluid pressure in a borehole during drilling of the borehole, the apparatus including an inlet suitable for connection to a pump, a main outlet suitable for connection to a drill pipe, and an overflow outlet suitable for connection to a fluid reservoir, the inlet being connected to the main outlet by a main flow conduit, and the overflow outlet being connected to the main flow conduit by means of an overflow conduit, wherein the overflow conduit is provided with a pressure regulator by means of which the pressure of fluid in the main flow conduit may be maintained at or around a predetermined pressure value.

    VALVE ASSEMBLY
    7.
    发明公开
    VALVE ASSEMBLY 有权
    阀组件

    公开(公告)号：EP2964872A2

    公开(公告)日：2016-01-13

    申请号：EP14710350.1

    申请日：2014-03-05

    申请人： Managed Pressure Operations Pte. Ltd

    发明人： MACGREGOR, Alexander John ,  LEUCHTENBERG, Christian ,  BISSET, James

    IPC分类号： E21B21/10 ,  E21B19/16

    CPC分类号： E21B21/106 ,  E21B19/16

    摘要： A valve assembly (10) for use controlling flow of fluid into a drill pipe (42), the valve assembly (10) having a valve body (12), a valve member (20) and a valve seat (14), wherein a) the valve body (12) has a main passage b) the valve member (20) is movable between a closed position in which the valve member (20) engages with a seat face (16) of the valve seat (14) to substantially prevent flow of fluid along the main passage, and an open position in which the valve member (20) is spaced from the seat face (16), c) the valve seat (14) is a separate part to the valve body (12).

    摘要翻译： 1。一种用于控制流体流入钻杆（42）的阀组件（10），所述阀组件（10）具有阀体（12），阀构件（20）和阀座（14），其中a ）阀体（12）具有主通道b），阀构件（20）可在阀构件（20）与阀座（14）的座面（16）接合的关闭位置基本上 防止流体沿着主通道流动，以及打开位置，其中阀构件（20）与座面（16）间隔开，c）阀座（14）是与阀体（12）分开的部件， 。

    APPARATUS FOR CONTINUOUS CIRCULATION DRILLING OF A WELLBORE
    8.
    发明公开
    APPARATUS FOR CONTINUOUS CIRCULATION DRILLING OF A WELLBORE 审中-公开
    设备用于钻井的钻孔连续循环

    公开(公告)号：EP2909422A2

    公开(公告)日：2015-08-26

    申请号：EP13780386.2

    申请日：2013-10-17

    申请人： Managed Pressure Operations Pte. Ltd

    发明人： LEUCHTENBERG, Christian ,  YOUNGER, Rae

    IPC分类号： E21B21/10 ,  E21B19/16

    CPC分类号： E21B21/12 ,  E21B19/16 ,  E21B21/106

    摘要： An apparatus for continuous circulation drilling comprising a tubular body having a main passage extending along a longitudinal axis of the tubular body from a first end of the tubular body to a second end of the tubular body, a side passage and a control passage, the side passage and control passage both extending through the tubular body into the main passage, the tubular body containing a valve assembly which is operable to close the main passage when the side passage is open and to close the side passage when the main passage is open, the assembly further comprising a hydraulic connector which is operable to clamp around the tubular body, the connector comprising a housing with an interior surface which is provided with first and second grooves which, when the connector is clamped around the tubular body, each form a channel which extends in continuous loop around the exterior of the tubular body, there being at least one passage extending through the housing from an exterior surface of the housing into each of the channels, wherein the tubular body is further provided with two grooves which extend around an exterior surface of the body so that, when the connector is clamped around the tubular body, the connector housing engages with the grooves, the grooves thus restricting longitudinal movement of the connector relative to the tubular body, and the side passage and control passage each connect the main passage with one of the channels formed by the connector.

    DRILLING METHOD FOR DRILLING A SUBTERRANEAN BOREHOLE
    9.
    发明公开
    DRILLING METHOD FOR DRILLING A SUBTERRANEAN BOREHOLE 审中-公开
    BOHRVERFAHREN ZUM BOHREN EINES UNTERIRDISCHEN BOHRLOCHS

    公开(公告)号：EP2900898A2

    公开(公告)日：2015-08-05

    申请号：EP13771200.6

    申请日：2013-09-27

    申请人： Managed Pressure Operations Pte. Ltd

    发明人： LEUCHTENBERG, Christian ,  SAVAGE, Pat

    IPC分类号： E21B21/08

    CPC分类号： E21B21/001 ,  E21B17/01 ,  E21B17/07 ,  E21B21/08 ,  E21B21/106 ,  E21B33/00 ,  E21B33/064

    摘要： A method of drilling a subterranean wellbore using a drill string including the steps of estimating or determining a reduced static density of a drilling fluid based on the equivalent circulating density of the drilling fluid in a section of the wellbore, providing a drilling fluid having substantially that reduced static density, introducing the drilling fluid having said reduced static density into the wellbore, and removing the drilling fluid from the wellbore via a return line.

    摘要翻译： 一种使用钻柱钻地下井眼的装置。 该设备包括提升管，布置在提升管中的密封装置，以便形成第一提升管室和第二提升管室以及提升管增压泵。 提升管至少部分地包括钻柱并且围绕钻柱定义基本上环形的空间。 第二室与提升管增压泵流体连通，使得存储在第二提升管室中的杀死流体可以保持在第一压力大于第一提升室中的钻井液的第二压力。