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    INTEGRATED SYSTEM FOR INVESTIGATING SUB-SURFACE FEATURES OF A ROCK FORMATION
    5.
    发明申请
    INTEGRATED SYSTEM FOR INVESTIGATING SUB-SURFACE FEATURES OF A ROCK FORMATION 有权
    用于调查岩层的表面特征的综合系统

    公开(公告)号：US20120120761A1

    公开(公告)日：2012-05-17

    申请号：US13292941

    申请日：2011-11-09

    申请人： Cung Khac VU ,  Christopher Skelt ,  Kurt Nihei ,  Paul A. Johnson ,  Robert Guyer ,  James A. Ten Cate ,  Pierre-Yves Le Bas ,  Carène S. Larmat

    发明人： Cung Khac VU ,  Christopher Skelt ,  Kurt Nihei ,  Paul A. Johnson ,  Robert Guyer ,  James A. Ten Cate ,  Pierre-Yves Le Bas ,  Carène S. Larmat

    IPC分类号： G01V1/00

    CPC分类号： G01V1/006 ,  G01V1/44 ,  G01V1/46 ,  G01V1/50 ,  G01V1/52 ,  G01V2210/125 ,  G01V2210/127 ,  G01V2210/588 ,  G10K15/02

    摘要： A system for investigating non-linear properties of a rock formation around a borehole is provided. The system includes a first sub-system configured to perform data acquisition, control and recording of data; a second subsystem in communication with the first sub-system and configured to perform non-linearity and velocity preliminary imaging; a third subsystem in communication with the first subsystem and configured to emit controlled acoustic broadcasts and receive acoustic energy; a fourth subsystem in communication with the first subsystem and the third subsystem and configured to generate a source signal directed towards the rock formation; and a fifth subsystem in communication with the third subsystem and the fourth subsystem and configured to perform detection of signals representative of the non-linear properties of the rock formation.

    摘要翻译： 提供了一种用于调查钻孔周围的岩层的非线性特性的系统。 该系统包括被配置为执行数据采集，控制和记录数据的第一子系统; 与所述第一子系统通信并被配置为执行非线性和速度初步成像的第二子系统; 与所述第一子系统通信并被配置为发射受控的声频广播并接收声能的第三子系统; 与所述第一子系统和所述第三子系统通信的第四子系统，并且被配置为生成指向所述岩层的源信号; 以及与第三子系统和第四子系统通信的第五子系统，并且被配置为执行表示岩层的非线性特性的信号的检测。

    Method and system for generating a beam of acoustic energy from a borehole, and applications thereof
    10.
    发明授权
    Method and system for generating a beam of acoustic energy from a borehole, and applications thereof 有权
    用于从钻孔产生声能束的方法和系统及其应用

    公开(公告)号：US08116167B2

    公开(公告)日：2012-02-14

    申请号：US12137980

    申请日：2008-06-12

    申请人： Paul A. Johnson ,  James A. Ten Cate ,  Robert Guyer ,  Pierre-Yves Le Bas ,  Cung Vu ,  Kurt Nihei ,  Denis P. Schmitt ,  Christopher Skelt

    发明人： Paul A. Johnson ,  James A. Ten Cate ,  Robert Guyer ,  Pierre-Yves Le Bas ,  Cung Vu ,  Kurt Nihei ,  Denis P. Schmitt ,  Christopher Skelt

    IPC分类号： G01V1/50 ,  G01V1/44

    CPC分类号： G01V1/46

    摘要： A compact array of transducers is employed as a downhole instrument for acoustic investigation of the surrounding rock formation. The array is operable to generate simultaneously a first acoustic beam signal at a first frequency and a second acoustic beam signal at a second frequency different than the first frequency. These two signals can be oriented through an azimuthal rotation of the array and an inclination rotation using control of the relative phases of the signals from the transmitter elements or electromechanical linkage. Due to the non-linearity of the formation, the first and the second acoustic beam signal mix into the rock formation where they combine into a collimated third signal that propagates in the formation along the same direction than the first and second signals and has a frequency equal to the difference of the first and the second acoustic signals. The third signal is received either within the same borehole, after reflection, or another borehole, after transmission, and analyzed to determine information about rock formation. Recording of the third signal generated along several azimuthal and inclination directions also provides 3D images of the formation, information about 3D distribution of rock formation and fluid properties and an indication of the dynamic acoustic non-linearity of the formation.

    摘要翻译： 传感器的紧凑阵列被用作井下仪器，用于对周围岩层进行声学研究。 阵列可操作以同时产生第一频率处的第一声波束信号和以与第一频率不同的第二频率的第二声束信号。 这两个信号可以通过阵列的方位角旋转定向，并且通过使用来自发射器元件或机电连杆的信号的相对相位的控制来定位倾斜旋转。 由于形成的非线性，第一和第二声束信号混合到岩层中，在那里它们组合成沿着与第一和第二信号相同的方向在地层中传播的准直的第三信号，并且具有频率 等于第一和第二声信号的差。 第三个信号在相同的钻孔，反射后或另一个钻孔中，在传输之后被接收并且被分析以确定关于岩层的信息。 沿着几个方位和倾斜方向产生的第三信号的记录还提供了地层的3D图像，关于岩层的3D分布和流体性质的信息以及地层的动态声学非线性的指示。