公开(公告)号：US20090310441A1

公开(公告)日：2009-12-17

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： G01V1/44

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。

公开(公告)号：US20100002540A1

公开(公告)日：2010-01-07

申请号：US12166842

申请日：2008-07-02

申请人： Cung Khac VU ,  Dipen N. Sinha ,  Cristian Pantea ,  Kurt Nihei ,  Denis P. Schmitt ,  Christopher Skelt

发明人： Cung Khac VU ,  Dipen N. Sinha ,  Cristian Pantea ,  Kurt Nihei ,  Denis P. Schmitt ,  Christopher Skelt

IPC分类号： G01V1/40

CPC分类号： G01V1/46

摘要： In some aspects of the invention, a device, positioned within a well bore, configured to generate and direct an acoustic beam into a rock formation around a borehole is disclosed. The device comprises a source configured to generate a first signal at a first frequency and a second signal at a second frequency; a transducer configured to receive the generated first and the second signals and produce acoustic waves at the first frequency and the second frequency; and a non-linear material, coupled to the transducer, configured to generate a collimated beam with a frequency equal to the difference between the first frequency and the second frequency by a non-linear mixing process, wherein the non-linear material includes one or more of a mixture of liquids, a solid, a granular material, embedded microspheres, or an emulsion.

摘要翻译： 在本发明的一些方面，公开了一种定位在井眼内的装置，其被配置为产生并将声束引导到围绕钻孔的岩层中。 该装置包括被配置为以第一频率产生第一信号的源和处于第二频率的第二信号; 被配置为接收产生的第一和第二信号并产生处于第一频率和第二频率的声波的换能器; 以及耦合到所述换能器的非线性材料，被配置为通过非线性混合过程产生具有等于所述第一频率和所述第二频率之间的差的频率的准直波束，其中所述非线性材料包括一个或 更多的液体，固体，颗粒材料，嵌入的微球体或乳液的混合物。

公开(公告)号：US20100322031A1

公开(公告)日：2010-12-23

申请号：US12870440

申请日：2010-08-27

申请人： Cung Khac VU ,  Dipen N. Sinha ,  Cristian Pantea ,  Kurt Nihei ,  Denis P. Schmitt ,  Christopher Skelt

发明人： Cung Khac VU ,  Dipen N. Sinha ,  Cristian Pantea ,  Kurt Nihei ,  Denis P. Schmitt ,  Christopher Skelt

IPC分类号： G01V1/48

CPC分类号： G01V1/46

摘要： In some aspects of the invention, a device, positioned within a well bore, configured to generate and direct an acoustic beam into a rock formation around a borehole is disclosed. The device comprises a source configured to generate a first signal at a first frequency and a second signal at a second frequency; a transducer configured to receive the generated first and the second signals and produce acoustic waves at the first frequency and the second frequency; and a non-linear material, coupled to the transducer, configured to generate a collimated beam with a frequency equal to the difference between the first frequency and the second frequency by a non-linear mixing process, wherein the non-linear material includes one or more of a mixture of liquids, a solid, a granular material, embedded microspheres, or an emulsion.

公开(公告)号：US07839718B2

公开(公告)日：2010-11-23

申请号：US12166842

申请日：2008-07-02

申请人： Cung Khac Vu ,  Dipen N. Sinha ,  Cristian Pantea ,  Kurt Nihei ,  Denis P. Schmitt ,  Christopher Skelt

发明人： Cung Khac Vu ,  Dipen N. Sinha ,  Cristian Pantea ,  Kurt Nihei ,  Denis P. Schmitt ,  Christopher Skelt

IPC分类号： G01V1/38 ,  G01V1/40 ,  H04B1/02

CPC分类号： G01V1/46

摘要： In some aspects of the invention, a device, positioned within a well bore, configured to generate and direct an acoustic beam into a rock formation around a borehole is disclosed. The device comprises a source configured to generate a first signal at a first frequency and a second signal at a second frequency; a transducer configured to receive the generated first and the second signals and produce acoustic waves at the first frequency and the second frequency; and a non-linear material, coupled to the transducer, configured to generate a collimated beam with a frequency equal to the difference between the first frequency and the second frequency by a non-linear mixing process, wherein the non-linear material includes one or more of a mixture of liquids, a solid, a granular material, embedded microspheres, or an emulsion.

摘要翻译： 在本发明的一些方面，公开了一种定位在井眼内的装置，其被配置为产生并将声束引导到围绕钻孔的岩层中。 该装置包括被配置为以第一频率产生第一信号的源和处于第二频率的第二信号; 被配置为接收产生的第一和第二信号并产生处于第一频率和第二频率的声波的换能器; 以及耦合到所述换能器的非线性材料，被配置为通过非线性混合过程产生具有等于所述第一频率和所述第二频率之间的差的频率的准直束，其中所述非线性材料包括一个或 更多的液体，固体，颗粒材料，嵌入的微球体或乳液的混合物。

公开(公告)号：US20100322029A1

公开(公告)日：2010-12-23

申请号：US12870604

申请日：2010-08-27

申请人： Cung Khac VU ,  Dipen N. Sinha ,  Cristian Pantea ,  Kurt Nihei ,  Denis P. Schmitt ,  Christopher Skelt

发明人： Cung Khac VU ,  Dipen N. Sinha ,  Cristian Pantea ,  Kurt Nihei ,  Denis P. Schmitt ,  Christopher Skelt

IPC分类号： G01V1/40

CPC分类号： G01V1/46

摘要： In some aspects of the invention, a device, positioned within a well bore, configured to generate and direct an acoustic beam into a rock formation around a borehole is disclosed. The device comprises a source configured to generate a first signal at a first frequency and a second signal at a second frequency; a transducer configured to receive the generated first and the second signals and produce acoustic waves at the first frequency and the second frequency; and a non-linear material, coupled to the transducer, configured to generate a collimated beam with a frequency equal to the difference between the first frequency and the second frequency by a non-linear mixing process, wherein the non-linear material includes one or more of a mixture of liquids, a solid, a granular material, embedded microspheres, or an emulsion.

摘要翻译： 在本发明的一些方面，公开了一种定位在井眼内的装置，其被配置为产生并将声束引导到围绕钻孔的岩层中。 该装置包括被配置为以第一频率产生第一信号的源和处于第二频率的第二信号; 被配置为接收产生的第一和第二信号并产生处于第一频率和第二频率的声波的换能器; 以及耦合到所述换能器的非线性材料，被配置为通过非线性混合过程产生具有等于所述第一频率和所述第二频率之间的差的频率的准直波束，其中所述非线性材料包括一个或 更多的液体，固体，颗粒材料，嵌入的微球体或乳液的混合物。