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    IMAGE BASED STICK SLIP CORRECTION OF LOGGING WHILE DRILLING IMAGES
    3.
    发明申请
    IMAGE BASED STICK SLIP CORRECTION OF LOGGING WHILE DRILLING IMAGES 有权

    公开(公告)号：US20240418075A1

    公开(公告)日：2024-12-19

    申请号：US18719991

    申请日：2023-05-31

    Applicant: Schlumberger Technology Corporation

    Inventor： Shiduo Yang ,  Alexis He ,  Tianhua Zhang

    IPC: E21B47/002 ,  E21B47/04 ,  G06T7/00 ,  G06T11/00

    Abstract: A method for correcting an LWD image to remove stick slip features includes obtaining an LWD image in a wellbore. Surface depth measurements may be interpolated to obtain interpolated surface depths at selected ones of the depths in the LWD image and evaluated to obtain a first tool status log. The LWD image may be evaluated to obtain a second tool status log. The two status logs may be synchronized to obtain a synchronized log. A stick slip feature may be identified in the LWD image and the image resampled to remove the stick slip feature from the LWD image.

    Systems and Methods for Curvature Analysis from Borehole Dips and Applications Thereof
    5.
    发明申请
    Systems and Methods for Curvature Analysis from Borehole Dips and Applications Thereof 审中-公开
    井眼沉降曲线分析系统与方法及应用

    公开(公告)号：US20160003974A1

    公开(公告)日：2016-01-07

    申请号：US14764160

    申请日：2014-01-28

    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

    Inventor： Kang Wang ,  Philippe Marza ,  Shiduo Yang ,  Randolph Koepsell ,  Mi Zhou ,  Bin Bin Du ,  Rebecca Steinmann

    IPC: G01V99/00 ,  G06F17/10

    CPC classification number: G01V99/005 ,  E21B47/02 ,  G01V1/301 ,  G01V2210/27 ,  G01V2210/6169 ,  G01V2210/66 ,  G06F17/10

    Abstract: Systems and methods for modeling subsurface rock formations based on well log data are provided. Systems include a downhole tool for acquiring data from which borehole dips may be picked and a processor including machine-readable instructions for curvature analysis based on inputs generated from the picked borehole dips data and which may be independent of 2D cross section model orientation. Methods (which may be incorporated in the machine-readable instructions corresponding to the systems) include pre-processing borehole dips data to generate inputs such as true stratigraphic thickness index, Local Constant Dips, borehole structural dip, and attributes for structural dip projections which may be used in a curvature analysis process for generating curvature logs such as standard, curvature along axis and curvature normal to axis logs from for smoothed dips, short zone structural dips and/or long zone structural dips.

    Abstract translation: 提供了基于测井数据建模地下岩层的系统和方法。 系统包括井下工具，用于采集可从其中挑选钻孔汲取的数据，以及处理器，其包括基于从拾取的钻孔倾倒数据生成的输入的曲率分析的机器可读指令，并且可以独立于2D横截面模型取向。 方法（可以结合在与系统相对应的机器可读指令中）包括预处理钻孔倾斜数据，以生成输入，例如真实的地层厚度指数，局部恒定下沉，井眼结构倾角和结构倾斜投影的属性， 用于曲率分析过程中，用于产生曲率测井，例如标准曲率，沿轴线的曲率和垂直于轴线的曲率，用于平滑的倾角，短的区域结构下降和/或长的区域结构下降。

    Systems and methods for curvature analysis from borehole dips and applications thereof
    7.
    发明授权
    Systems and methods for curvature analysis from borehole dips and applications thereof 有权

    公开(公告)号：US10444405B2

    公开(公告)日：2019-10-15

    申请号：US14764160

    申请日：2014-01-28

    Applicant: Schlumberger Technology Corporation

    Inventor： Kang Wang ,  Philippe Marza ,  Shiduo Yang ,  Randolph Koepsell ,  Mi Zhou ,  Bin Bin Du ,  Rebecca Steinmann

    IPC: G06G7/48 ,  G01V99/00 ,  E21B47/02 ,  G01V1/30 ,  G06F17/10

    Abstract: Systems and methods for modeling subsurface rock formations based on well log data are provided. Systems include a downhole tool for acquiring data from which borehole dips may be picked and a processor including machine-readable instructions for curvature analysis based on inputs generated from the picked borehole dips data and which may be independent of 2D cross section model orientation. Methods (which may be incorporated in the machine-readable instructions corresponding to the systems) include pre-processing borehole dips data to generate inputs such as true stratigraphic thickness index, Local Constant Dips, borehole structural dip, and attributes for structural dip projections which may be used in a curvature analysis process for generating curvature logs such as standard, curvature along axis and curvature normal to axis logs from for smoothed dips, short zone structural dips and/or long zone structural dips.

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