Method for determining petrophysical properties from logging measurements

    公开(公告)号:US10451769B2

    公开(公告)日:2019-10-22

    申请号:US15005666

    申请日:2016-01-25

    IPC分类号: G01V11/00

    摘要: A method for transforming a 2D or 3D earth volume geometry into a 1D earth volume geometry includes performing a measurement using the measurement sensor in a wellbore. A layer boundary in the 2D or 3D earth volume geometry that is nearest to the measurement sensor is identified. A vector from the measurement sensor is generated toward the nearest layer boundary. A first intersection is identified between the vector and the nearest layer boundary, and a second intersection is identified between the vector and another layer boundary. Simulated boundaries that extend through the first and second intersections and are perpendicular to the vector are generated. The 1D earth volume geometry that is bounded by the first and second intersections is identified. A property value is extracted from the 2D or 3D earth volume geometry between the first and second intersections. The property value is assigned to the 1D earth geometry.

    Inversion-based workflow for consistent interpretation of nuclear density images in horizontal wells

    公开(公告)号:US10914861B2

    公开(公告)日:2021-02-09

    申请号:US15027007

    申请日:2014-10-06

    IPC分类号: G01V5/12 G01V5/08

    摘要: Systems and methods are disclosed for well logging using radiation detection and/or emission of gamma rays. A method according to the disclosure includes collecting data from the subterranean formation using a nuclear density tool, wherein the nuclear density tool is configured to collect data to form an azimuthal image. The method further includes characterizing a section of the subterranean formation comprising data and images acquired in a high angle wellbore section, a horizontal wellbore section, or a combination thereof. The method additionally includes performing a parallel inversion using apparent densities and volumetric photoelectric factor images to build a formation model, wherein the parallel inversion comprises a high angle workflow that models high angle wellbore sections and a horizontal workflow that models horizontal wellbore sections.

    INVERSION-BASED WORKFLOW FOR CONSISTENT INTERPRETATION OF NUCLEAR DENSITY IMAGES IN HORIZONTAL WELLS
    5.
    发明申请
    INVERSION-BASED WORKFLOW FOR CONSISTENT INTERPRETATION OF NUCLEAR DENSITY IMAGES IN HORIZONTAL WELLS 审中-公开
    基于反演的水平井中核密度图像一致解释的工作流程

    公开(公告)号:US20160252648A1

    公开(公告)日:2016-09-01

    申请号:US15027007

    申请日:2014-10-06

    IPC分类号: G01V5/12

    CPC分类号: G01V5/12 G01V5/04 G01V5/08

    摘要: Systems and methods are disclosed for well logging using radiation detection and/or emission of gamma rays. A method according to the disclosure includes collecting data from the subterranean formation using a nuclear density tool, wherein the nuclear density tool is configured to collect data to form an azimuthal image. The method further includes characterizing a section of the subterranean formation comprising data and images acquired in a high angle wellbore section, a horizontal wellbore section, or a combination thereof. The method additionally includes performing a parallel inversion using apparent densities and volumetric photoelectric factor images to build a formation model, wherein the parallel inversion comprises a high angle workflow that models high angle wellbore sections and a horizontal workflow that models horizontal wellbore sections.

    摘要翻译: 公开了用于使用γ射线的辐射检测和/或发射测井的系统和方法。 根据本公开的方法包括使用核密度工具从地下地层收集数据,其中所述核密度工具被配置为收集数据以形成方位角图像。 该方法还包括表征地层的一部分,其包括在高角度井筒部分,水平井筒部分或其组合中获取的数据和图像。 该方法另外包括使用表观密度和体积光电因子图像来执行平行反演以构建地层模型,其中并行反演包括模拟高角井眼部分的高角度工作流程和模拟水平井筒部分的水平工作流程。

    Method for Determining Petrophysical Properties From Logging Measurements
    6.
    发明申请
    Method for Determining Petrophysical Properties From Logging Measurements 审中-公开
    从测井测量中确定岩石物理性质的方法

    公开(公告)号:US20160216405A1

    公开(公告)日:2016-07-28

    申请号:US15005666

    申请日:2016-01-25

    IPC分类号: G01V99/00 G01V11/00

    CPC分类号: G01V11/00

    摘要: A method for transforming a 2D or 3D earth volume geometry into a 1D earth volume geometry includes performing a measurement using the measurement sensor in a wellbore. A layer boundary in the 2D or 3D earth volume geometry that is nearest to the measurement sensor is identified. A vector from the measurement sensor is generated toward the nearest layer boundary. A first intersection is identified between the vector and the nearest layer boundary, and a second intersection is identified between the vector and another layer boundary. Simulated boundaries that extend through the first and second intersections and are perpendicular to the vector are generated. The 1D earth volume geometry that is bounded by the first and second intersections is identified. A property value is extracted from the 2D or 3D earth volume geometry between the first and second intersections. The property value is assigned to the 1D earth geometry.

    摘要翻译: 将2D或3D地球体积几何变换为1D地球体积几何的方法包括使用井眼中的测量传感器执行测量。 识别最接近测量传感器的2D或3D地球体积几何中的层边界。 生成来自测量传感器的矢量朝向最近的层边界。 在矢量和最近的层边界之间识别第一个交点,并且在矢量和另一个层边界之间识别第二个交点。 生成延伸通过第一和第二交叉并且垂直于向量的模拟边界。 识别由第一和第二交叉点限定的1D地球体积几何。 从第一和第二交叉点之间的2D或3D地球体积几何提取属性值。 属性值分配给1D地球几何。