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    DETERMINING STANDOFF BETWEEN A WALL OF A WELLBORE AND A TOOL DISPOSED IN THE WELLBORE
    1.
    发明申请
    DETERMINING STANDOFF BETWEEN A WALL OF A WELLBORE AND A TOOL DISPOSED IN THE WELLBORE 审中-公开

    公开(公告)号：US20180252840A1

    公开(公告)日：2018-09-06

    申请号：US15972265

    申请日：2018-05-07

    申请人： Schlumberger Technology Corporation

    发明人： Alexandre Abellan ,  Emmanuel Legendre

    IPC分类号： G01V3/38 ,  E21B47/026 ,  E21B49/00

    CPC分类号： G01V3/38 ,  E21B47/026 ,  E21B47/12 ,  E21B49/005 ,  G01V3/088 ,  G01V3/24

    摘要： Apparatus and methods operable to determine between a wall of a wellbore penetrating in a subterranean formation and a resistivity tool disposed in the wellbore. One such method includes using an apparent impedance function depending on a frequency variable and a plurality of unknown parameters, at least one of the unknown parameters depending on a formation impedance of the subterranean formation. The method also includes applying a voltage, at each of a plurality of frequency values, between electrodes of a resistivity tool that is disposed in the wellbore. The method also includes measuring, across the electrodes, a plurality of apparent impedance values, each corresponding to a different one of the frequency values. The method still further includes determining the unknown parameters based on the frequency values and the apparent impedance values, and estimating the standoff distance based on an expression that includes at least one of the unknown parameters.

    Tool for azimuthal resistivity measurement and bed boundary detection
    3.
    发明授权
    Tool for azimuthal resistivity measurement and bed boundary detection 有权

    公开(公告)号：US09851467B2

    公开(公告)日：2017-12-26

    申请号：US15252153

    申请日：2016-08-30

    申请人： HALLIBURTON ENERGY SERVICES, INC.

    发明人： Michael S. Bittar

    IPC分类号： G01V3/10 ,  G01V3/28 ,  E21B47/026 ,  G01V1/28 ,  G01V3/30

    CPC分类号： G01V3/28 ,  E21B47/026 ,  G01V1/28 ,  G01V3/30 ,  G01V2210/54

    摘要： Systems and methods for performing bed boundary detection and azimuthal resistivity logging using a logging tool with a pair of tilted receiver antennas having a midpoint on a longitudinal axis of the logging tool, a first pair of transmitter antennas symmetrically spaced from said midpoint, and a third tilted receiver antenna positioned farther from said midpoint than the transmitter antennas. Method embodiments include energizing each transmitter antenna of the first pair in a firing sequence and obtaining, responsive to the energizing, measurements with a pair of tilted receiver antennas equally spaced from said midpoint. Methods may also include obtaining, responsive to energizing of a more distant one of the first pair of transmitter antennas, measurements with a third tilted receiver antenna positioned farther from the midpoint than the transmitter antennas.

    Detecting boundary locations of multiple subsurface layers
    7.
    发明授权
    Detecting boundary locations of multiple subsurface layers 有权

    公开(公告)号：US09678240B2

    公开(公告)日：2017-06-13

    申请号：US14358356

    申请日：2013-07-18

    申请人： Halliburton Energy Services, Inc.

    发明人： Yumei Tang

    IPC分类号： G01V3/20 ,  E21B47/026

    CPC分类号： G01V3/20 ,  E21B47/026

    摘要： Systems, methods, and software for detecting boundary locations of multiple subsurface layers are described. In some aspects, the boundaries of multiple subsurface layers in a subterranean region are identified based on measurements associated with multiple different transmitter-receiver spacings. The measurements are generated based on operating multiple transmitters and multiple receivers of a resistivity logging tool at a tool depth in a wellbore in the subterranean region. A first pair of the subsurface boundary locations are determined based on a first measurement associated with a first transmitter-receiver spacing. A second, different pair of the subsurface boundary locations are determined based on a second measurement associated with a second, longer transmitter-receiver spacing. The first pair of subsurface boundary locations reside between the second pair of subsurface boundary locations in the subterranean region.

    DOWNHOLE COMPLETION SYSTEM SEALING AGAINST THE CAP LAYER
    10.
    发明申请
    DOWNHOLE COMPLETION SYSTEM SEALING AGAINST THE CAP LAYER 审中-公开
    井底完井系统密封盖层

    公开(公告)号：US20170051585A1

    公开(公告)日：2017-02-23

    申请号：US15238902

    申请日：2016-08-17

    申请人： WELLTEC A/S

    发明人： Paul HAZEL

    IPC分类号： E21B43/10 ,  E21B47/026 ,  E21B23/01 ,  E21B34/10 ,  E21B47/06 ,  E21B33/128 ,  E21B33/12

    CPC分类号： E21B43/105 ,  E21B23/01 ,  E21B23/06 ,  E21B33/1208 ,  E21B33/127 ,  E21B33/1285 ,  E21B34/10 ,  E21B47/026 ,  E21B47/06 ,  E21B47/065

    摘要： A cementless downhole completion system including an annular barrier with a tubular metal part being mounted as part of a first well tubular metal structure arranged in a borehole in a formation and the annular barrier is arranged opposite an impermeable cap layer in the formation. A downhole completion system for completing a well having a top, comprising a formation comprising a cap layer, a borehole extending through the cap layer to provide an inner cap layer face and, a first well tubular metal structure arranged in the borehole comprising a first annular barrier and a second annular barrier. In the expanded position, the expandable tubular of the first annular barrier overlaps the cap layer and the expandable tubular of the second annular barrier overlaps the cap layer.

    摘要翻译： 一种无骨水泥井下完井系统，其包括具有管状金属部分的环形阻挡件，其被安装为布置在地层中的钻孔中的第一井管状金属结构的一部分，并且所述环形阻挡件布置成与所述地层中不可渗透的盖层相对。 一种用于完成具有顶部的井的井下完井系统，包括包括盖层的钻孔，延伸穿过盖层以提供内盖层面的钻孔，以及布置在钻孔中的第一井管状金属结构，包括第一环形 屏障和第二环形屏障。 在扩展位置，第一环形阻挡层的可膨胀管与覆盖层重叠，并且第二环形阻挡层的可膨胀管与覆盖层重叠。