Downhole rebound hardness measurement while drilling or wireline logging
    1.
    发明授权
    Downhole rebound hardness measurement while drilling or wireline logging 有权
    井下回弹硬度测量,同时钻孔或电缆测井

    公开(公告)号:US09291539B2

    公开(公告)日:2016-03-22

    申请号:US13050660

    申请日:2011-03-17

    IPC分类号: E21B49/00 G01N3/52

    CPC分类号: G01N3/52 E21B49/006

    摘要: A method and apparatus for estimating a rock strength profile of a formation is disclosed. A tool having a testing surface is conveyed into a wellbore in the formation. The testing surface is propelled to impact the formation at a plurality of depths in the wellbore. A measurement of hardness of the formation is obtained from a rebound of the testing surface from the formation at the plurality of depths. The rock strength profile of the formation is estimated using the obtained measurements of hardness at the plurality of depths. A parameter for drilling the wellbore can be affected using the estimated rock strength profile.

    摘要翻译: 公开了一种用于估计地层的岩石强度分布的方法和装置。 具有测试表面的工具被输送到地层中的井筒中。 测试表面被推进以在井眼中的多个深度处冲击地层。 从多个深度的地层的测试表面的反弹获得地层的硬度测量值。 使用所获得的多个深度处的硬度测量来估计地层的岩石强度分布。 使用估计的岩石强度分布可以影响钻井的参数。