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12 条记录 (耗时 0.014 秒)

    Adaptive borehole corrections accounting for eccentricity for array laterologs
    5.
    发明授权
    Adaptive borehole corrections accounting for eccentricity for array laterologs 有权
    自适应钻孔校正，用于排列阵列的偏心度

    公开(公告)号：US08775084B2

    公开(公告)日：2014-07-08

    申请号：US12234106

    申请日：2008-09-19

    申请人： Michael Boris Rabinovich ,  Bill H. Corley

    发明人： Michael Boris Rabinovich ,  Bill H. Corley

    IPC分类号： G01V3/38

    CPC分类号： G01V3/38 ,  E21B47/09

    摘要： Disclosed is an adaptive borehole correction (ABC) technique based on an inversion approach that advantageously corrects shallow laterolog measurements for borehole effects, including determining and accounting for unknown tool eccentricity. The algorithm is based on simplex radial 1-D inversion where at every logging up to four unknowns are determined, namely tool eccentricity, Rt, Rxo, and Lxo. After that a borehole correction methodology is employed wherein the tool response in a borehole with real mud resistivity Rm is modified to a response in the borehole with virtual mud resistivity equal to Rxo.

    摘要翻译： 公开了一种基于反演方法的自适应钻孔校正（ABC）技术，其有利地校正了井眼效应的浅层后测量，包括确定和计算未知的工具偏心率。 该算法基于单向径向1-D反演，其中每个记录最多确定四个未知数，即工具偏心率，Rt，Rxo和Lxo。 之后，采用井眼校正方法，其中具有实际泥浆电阻率Rm的钻孔中的工具响应被修改为钻孔中的响应，虚拟泥浆电阻率等于Rxo。

    Adaptive Borehole Corrections Accounting for Eccentricity for Array Laterlogs
    7.
    发明申请
    Adaptive Borehole Corrections Accounting for Eccentricity for Array Laterlogs 有权
    自适应孔眼校正计算阵列后视的偏心度

    公开(公告)号：US20090082969A1

    公开(公告)日：2009-03-26

    申请号：US12234106

    申请日：2008-09-19

    申请人： Michael Boris Rabinovich ,  Bill H. Corley

    发明人： Michael Boris Rabinovich ,  Bill H. Corley

    IPC分类号： G01V3/38

    CPC分类号： G01V3/38 ,  E21B47/09

    摘要： Disclosed is an adaptive borehole correction (ABC) technique based on an inversion approach that advantageously corrects shallow laterolog measurements for borehole effects, including determining and accounting for unknown tool eccentricity. The algorithm is based on simplex radial 1-D inversion where at every logging up to four unknowns are determined, namely tool eccentricity, Rt, Rxo, and Lxo. After that a borehole correction methodology is employed wherein the tool response in a borehole with real mud resistivity Rm is modified to a response in the borehole with virtual mud resistivity equal to Rxo.

    摘要翻译： 公开了一种基于反演方法的自适应钻孔校正（ABC）技术，其有利地校正了井眼效应的浅层后测量，包括确定和计算未知的工具偏心率。 该算法基于单向径向1-D反演，其中每个记录最多确定四个未知数，即工具偏心率，Rt，Rxo和Lxo。 之后，采用井眼校正方法，其中具有实际泥浆电阻率Rm的钻孔中的工具响应被修改为钻孔中的响应，虚拟泥浆电阻率等于Rxo。

    Correction of cross-component induction measurements for misalignment using comparison of the XY formation response
    8.
    发明授权
    Correction of cross-component induction measurements for misalignment using comparison of the XY formation response 有权
    使用XY形成响应的比较校正用于未对准的横向成分感应测量

    公开(公告)号：US07379818B2

    公开(公告)日：2008-05-27

    申请号：US11400097

    申请日：2006-04-06

    申请人： Michael B. Rabinovich ,  Leonty A. Tabarovsky ,  Bill H. Corley ,  Luis M. Pelegri

    发明人： Michael B. Rabinovich ,  Leonty A. Tabarovsky ,  Bill H. Corley ,  Luis M. Pelegri

    IPC分类号： G01V1/40 ,  G01V3/10

    CPC分类号： G01V3/28

    摘要： A misalignment angle between the transmitter and receiver antenna of a multicomponent induction logging tool are estimated from quadrature component signals at multiple frequencies. A transmitter antenna having a first axial direction on a logging tool is excited at a plurality of frequencies. Signals responsive to the excitation are received at a receiver antenna having a second axial direction. A direct field between the transmitter antenna and the receiver antenna is obtained by performing multi-frequency focusing of the received signals. The misalignment angle is estimated from the direct field.

    摘要翻译： 多组分感应测井工具的发射机和接收机天线之间的偏移角由多个频率的正交分量信号估计。 在测井工具上具有第一轴向的发射天线以多个频率被激发。 在具有第二轴向方向的接收机天线处接收响应于激励的信号。 通过对接收到的信号进行多频聚焦，获得发射机天线和接收机天线之间的直接场。 从直接场估计未对准角。