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    TERM BY TERM GAIN CALIBRATION OF TRIAXIAL PROPAGATION MEASUREMENTS
    124.
    发明申请
    TERM BY TERM GAIN CALIBRATION OF TRIAXIAL PROPAGATION MEASUREMENTS 审中-公开
    通过TRIAXIAL传播测量的长期增益校准

    公开(公告)号：WO2015013587A1

    公开(公告)日：2015-01-29

    申请号：PCT/US2014/048145

    申请日：2014-07-25

    Applicant: SCHLUMBERGER CANADA LIMITED ,  SERVICES PETROLIERS SCHLUMBERGER ,  SCHLUMBERGER HOLDINGS LIMITED ,  SCHLUMBERGER TECHNOLOGY B.V. ,  PRAD RESEARCH AND DEVELOPMENT LIMITED ,  SCHLUMBERGER TECHNOLOGY CORPORATION

    Inventor： BERTRAND, Paul ,  HOMAN, Dean, M. ,  FREY, Mark ,  ARGENTIER, Luc

    IPC: E21B47/00 ,  G01V3/18 ,  G01V3/38

    CPC classification number: G01V13/00 ,  G01V3/108 ,  G01V3/26 ,  G01V3/28

    Abstract: A method for obtaining gain corrected triaxial electromagnetic propagation measurements with an offset correction includes deploying an electromagnetic logging tool in a subterranean borehole. The logging tool includes at least first and second axially spaced triaxial transmitters and at least first and second axially spaced triaxial receivers. A plurality of full tensor voltage measurements may be acquired and processed tensor term by tensor term to obtain a full tensor, gain corrected quantity. The processing may optionally include (i) removing a full tensor voltage offset from the acquired full tensor voltage measurements to obtain a corresponding plurality of offset corrected voltage tensors and (ii) processing the offset corrected voltage tensor term by tensor term to obtain the full tensor, gain and offset corrected quantity.

    Abstract translation: 用于通过偏移校正获得增益校正的三轴电磁传播测量的方法包括在地下钻孔中部署电磁测井工具。 测井工具包括至少第一和第二轴向间隔开的三轴发射器和至少第一和第二轴向间隔开的三轴接收器。 可以通过张量项获取多个全张量电压测量并且对张量项进行处理，以获得全张量，增益校正量。 该处理可以可选地包括（i）从所获取的全张量电压测量中去除全张量电压偏移以获得相应的多个偏移校正电压张量，以及（ii）通过张量项处理偏移校正的电压张量项以获得全张量 ，增益和补偿纠正量。

    INSTRUMENTED ROTARY TOOLS WITH ATTACHED CUTTERS
    127.
    发明申请
    INSTRUMENTED ROTARY TOOLS WITH ATTACHED CUTTERS 审中-公开
    仪器刀具与附件切割机

    公开(公告)号：WO2015011643A1

    公开(公告)日：2015-01-29

    申请号：PCT/IB2014/063306

    申请日：2014-07-22

    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION ,  SCHLUMBERGER CANADA LIMITED ,  SCHLUMBERGER TECHNOLOGY BV ,  SERVICES PETROLIERS SCHLUMBERGER ,  SCHLUMBERGER HOLDINGS LIMITED ,  PRAD RESEARCH AND DEVELOPMENT LIMITED

    Inventor： HUMPHREY, Caroline ,  COOK, John ,  JOHNSON, Ashley Bernard ,  TUNC, Göktürk

    IPC: E21B12/02 ,  E21B10/46

    CPC classification number: E21B12/02 ,  E21B10/56 ,  E21B47/065

    Abstract: Wear sensors are provided on a drill bit or other rotary cutting tool which is for operation in a subterranean borehole and has a plurality of separate cutters protruding from a support structure towards the material to be cut by the tool. The electrically operated sensing means are located at or coupled to a sensing point within a protrusion from the support structure. This sensing point is located within a protrusion such that attrition of at least one cutter to a partially worn state brings the protrusion into abrasive contact with the material being cut and attrition of the protrusion then exposes the sensing point to the material which is being cut by the tool and thereby brings about a detectable change, which may include damage to the sensor at the sensing point, indicative of wear. The tool includes means to communicate data from the sensing means to the surface.

    Abstract translation: 磨损传感器设置在钻头或其他旋转切削工具上，该切削工具用于在地下钻孔中操作，并且具有多个单独的切割器，从支撑结构朝向被切割的材料突出。 电动感测装置位于或联接到来自支撑结构的突起内的感测点。 该感测点位于突出部内，使得至少一个切割器的磨损部分磨损的状态使得突起与被切割的材料磨蚀接触，然后使突起的磨损将感测点暴露于正被切割的材料 该工具并因此引起可检测的变化，其可能包括在感测点处损坏传感器，指示磨损。 该工具包括将数据从感测装置传送到表面的装置。

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