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    Methods and apparatus to measure formation features
    12.
    发明授权
    Methods and apparatus to measure formation features 有权

    公开(公告)号：US11346213B2

    公开(公告)日：2022-05-31

    申请号：US16412140

    申请日：2019-05-14

    Applicant: Schlumberger Technology Corporation

    Inventor： Jean-Christophe Auchere ,  Hiroshi Hori ,  Adam Pedrycz ,  Bharat Narasimhan

    IPC: E21B47/12 ,  E21B44/02 ,  E21B49/00

    Abstract: Methods, apparatus, systems, and articles of manufacture are disclosed to measure a formation feature. An example apparatus includes a pre-processor to compare a first measurement obtained from a first sensor included in a logging tool at a first depth at a first time and a second measurement obtained from a second sensor included in the logging tool at the first depth at a second time. The example apparatus also include a semblance calculator to: calculate a correction factor based on a difference between the first measurement and the second measurement; and calculate a third measurement based on the correction factor and a fourth measurement obtained from the first sensor at a second depth at the second time. The example apparatus also includes a report generator to generate a report including the third measurement.

    Borehole Size Determination Downhole
    13.
    发明申请
    Borehole Size Determination Downhole 审中-公开

    公开(公告)号：US20190339411A1

    公开(公告)日：2019-11-07

    申请号：US15970924

    申请日：2018-05-04

    Applicant: Schlumberger Technology Corporation

    Inventor： Hadrien Dollfus ,  Henri-Pierre Valero ,  Jean-Christophe Auchere

    IPC: G01V1/50

    Abstract: Methods and apparatus pertaining to determining shape and size of a borehole at a depth within a subterranean formation using ultrasonic measurements obtained by a downhole tool at four different azimuthal locations corresponding to four mutually orthogonal directions extending radially from a central axis of the downhole tool. The measurements are indicative of a distance between a wall of the borehole and the downhole tool at each azimuthal location. The borehole shape and size are determined by estimating an ellipse approximating the borehole shape and size using the ultrasonic measurements.

    Versatile Acoustic Source
    16.
    发明申请
    Versatile Acoustic Source 审中-公开
    多功能声源

    公开(公告)号：US20160146956A1

    公开(公告)日：2016-05-26

    申请号：US14936460

    申请日：2015-11-09

    Applicant: Schlumberger Technology Corporation

    Inventor： Abderrhamane Ounadjela ,  Henri-Pierre Valero ,  Jean-Christophe Auchere

    IPC: G01V1/135

    CPC classification number: G01V1/145

    Abstract: A technique facilitates acoustic measurement and analysis in a variety of acoustic applications. An acoustic source is provided with a housing, e.g. a cylindrical housing, and a motor located within the housing. A piston is driven by the motor. The acoustic source also is provided with a radiating plate mounted along the housing and exposed to an environment surrounding the housing. A fluid passage contains actuating fluid and extends between the piston and the radiating plate. The piston and the radiating plate are linked by the fluid passage such that reciprocation of the piston by the motor causes oscillation of the radiating plate to create an acoustic signal. In some applications, a plurality of radiating plates and/or a plurality of motors may be arranged to enable monopole, dipole, cross-dipole, and/or quadrupole measurements.

    Abstract translation: 一种技术有助于各种声学应用中的声学测量和分析。 声源设置有壳体，例如 圆柱形壳体和位于壳体内的马达。 活塞由电机驱动。 声源还设置有沿着壳体安装并暴露于围绕壳体的环境的散热板。 流体通道包含致动流体并在活塞和散热板之间延伸。 活塞和散热板通过流体通道连接，使得活塞由电动机的往复运动引起辐射板的振荡，从而产生声信号。 在一些应用中，可以布置多个辐射板和/或多个电动机以使得能够进行单极，偶极，交叉偶极和/或四极测量。

    Methods and apparatus to measure formation features
    17.
    发明授权
    Methods and apparatus to measure formation features 有权

    公开(公告)号：US11808143B2

    公开(公告)日：2023-11-07

    申请号：US17660845

    申请日：2022-04-27

    Applicant: Schlumberger Technology Corporation

    Inventor： Jean-Christophe Auchere ,  Hiroshi Hori ,  Adam Pedrycz ,  Bharat Narasimhan

    IPC: E21B47/12 ,  E21B44/02 ,  E21B49/00

    CPC classification number: E21B47/12 ,  E21B44/02 ,  E21B49/00

    Abstract: Methods, apparatus, systems, and articles of manufacture are disclosed to measure a formation feature. An example apparatus includes a pre-processor to compare a first measurement obtained from a first sensor included in a logging tool at a first depth at a first time and a second measurement obtained from a second sensor included in the logging tool at the first depth at a second time. The example apparatus also include a semblance calculator to: calculate a correction factor based on a difference between the first measurement and the second measurement; and calculate a third measurement based on the correction factor and a fourth measurement obtained from the first sensor at a second depth at the second time. The example apparatus also includes a report generator to generate a report including the third measurement.

    Correcting eccentering effect in pulse-echo imaging
    19.
    发明授权
    Correcting eccentering effect in pulse-echo imaging 有权

    公开(公告)号：US11022711B2

    公开(公告)日：2021-06-01

    申请号：US16116981

    申请日：2018-08-30

    Applicant: Schlumberger Technology Corporation

    Inventor： Adam Pedrycz ,  Hiroshi Hori ,  Jean-Christophe Auchere

    IPC: G01V1/36 ,  G01V1/34

    Abstract: Methods for correcting eccentering effects on echoes detected from ultrasonic pulses emitted by a transducer of a downhole tool. Echo envelope amplitude, azimuth, and location for each echo is utilized to assess echo amplitude sensitivity to geometric and spatial characteristics of the downhole tool within the wellbore. Echo envelope amplitudes are corrected for eccentering effects based on the assessed sensitivity. A visual representation of the corrected echo envelope amplitudes is the generated. Also disclosed herein are tangible, non-transient, computer-readable media comprising instructions executable by a processor to carry out the methods, as well as systems including downhole tools and processing devices operable to carry out the methods.

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