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1. 发明申请

WO2009152416A3 METHOD AND SYSTEM FOR GENERATING A BEAM OF ACOUSTIC ENERGY FROM A BOREHOLE, AND APPLICATIONS THEREOF 审中-公开
标题翻译：用于从井眼产生声波能量的方法和系统及其应用
公开(公告)号：WO2009152416A3
公开(公告)日：2010-02-25
申请号：PCT/US2009047184
申请日：2009-06-12
申请人： CHEVRON USA INC , JOHNSON PAUL A , GUYER ROBERT , LE BAS PIERRE-YVES , VU CUNG , NIHEI KURT , SCHMITT DENIS P , SKELT CHRISTOPHER
发明人： JOHNSON PAUL A , GUYER ROBERT , LE BAS PIERRE-YVES , VU CUNG , NIHEI KURT , SCHMITT DENIS P , SKELT CHRISTOPHER
IPC分类号： G01V1/46
CPC分类号： G01V1/46
摘要： A compact array of transducers (110, 120) 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 (110) at a first frequency and a second acoustic beam signal (120) 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 electro-mechanical linkage. Due to the non-linearity of the formation (140), the first and the second acoustic beam signal (110, 120) mix into the rock formation where they combine into a collimated third signal (150) 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.
摘要翻译：传感器（110,120）的小型阵列被用作用于周围岩层的声学研究的井下仪器。阵列可操作以同时产生第一频率的第一声波束信号（110）和以不同于第一频率的第二频率的第二声束信号（120）。这两个信号可以通过阵列的方位旋转和通过控制来自发射器元件或机电连杆的信号的相对相位的倾斜旋转来定向。由于地层（140）的非线性，第一和第二声波束信号（110,120）混合到岩层中，在那里它们组合成准直的第三信号（150），其沿着相同的方向在地层中传播方向比第一和第二信号，并且具有等于第一和第二声信号的差的频率。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。

2. 发明申请

WO2010121202A1 SYSTEM AND METHOD TO ESTIMATE COMPRESSIONAL TO SHEAR VELOCITY (VP/VS) RATIO IN A REGION REMOTE FROM A BOREHOLE 审中-公开
标题翻译：评估压缩速度的系统和方法（VP / VS）在距离一个地区的一个地区远
公开(公告)号：WO2010121202A1
公开(公告)日：2010-10-21
申请号：PCT/US2010/031490
申请日：2010-04-16
申请人： CHEVRON U.S.A., INC. , LOS ALAMOS NATIONAL SECURITY , JOHNSON, Paul, A. , VU, Cung , TENCATE, James, A. , GUYER, Robert , LE BAS, Pierre-Yves , NIHEI, Kurt, T. , SCHMITT, Denis, P. , SKELT, Christopher
发明人： JOHNSON, Paul, A. , VU, Cung , TENCATE, James, A. , GUYER, Robert , LE BAS, Pierre-Yves , NIHEI, Kurt, T. , SCHMITT, Denis, P. , SKELT, Christopher
IPC分类号： G01V1/46
CPC分类号： G01V1/44 , G01V1/006 , G01V2210/125 , G01V2210/127 , G01V2210/588
摘要： In some aspects of the disclosure, a method for creating three-dimensional images of non-linear properties and the compressional to shear velocity ratio in a region (130) remote from a borehole using a conveyed logging tool (140) is disclosed. In some aspects, the method includes arranging a first source (105) in the borehole (110) and generating a steered beam of elastic energy at a first frequency; arranging a second source (115) in the borehole (110) and generating a steerable beam of elastic energy at a second frequency, such that the steerable beam at the first frequency and the steerable beam at the second frequency intercept at a location (130) away from the borehole (110); receiving at the borehole (110) by a sensor (135) a third elastic wave, created by a three wave mixing process, with a frequency equal to a difference between the first and second frequencies and a direction of propagation towards the borehole (110).
摘要翻译：在本公开的一些方面，公开了一种用于使用输送的测井工具（140）在远离钻孔的区域（130）中创建非线性特性的三维图像和压缩剪切速度比的方法。在一些方面，该方法包括在钻孔（110）中布置第一源（105）并且以第一频率产生转向的弹性能量束; 在钻孔（110）中布置第二源（115）并且以第二频率产生可转向的弹性能量束，使得在第一频率处的可操纵波束和在第二频率处的可操纵波束在位置（130）处截距，远离钻孔（110）; 通过传感器（135）在钻孔（110）处接收通过三波混合过程产生的频率等于第一和第二频率之间的差异的频率和朝向钻孔（110）的传播方向的第三弹性波，。

3. 发明申请

WO2010121200A1 SYSTEM AND METHOD TO CREATE THREE-DIMENSIONAL IMAGES OF NON-LINEAR ACOUSTIC PROPERTIES IN A REGION REMOTE FROM A BOREHOLE 审中-公开
标题翻译：系统和方法创建一个距离一个地层的一个地区的非线性声学特性的三维图像
公开(公告)号：WO2010121200A1
公开(公告)日：2010-10-21
申请号：PCT/US2010/031485
申请日：2010-04-16
申请人： CHEVRON U.S.A., INC. , LOS ALAMOS NATIONAL SECURITY , JOHNSON, Paul, A. , VU, Cung , TENCATE, James, A. , GUYER, Robert , LE BAS, Pierre-Yves , NIHEI, Kurt, T. , SCHMITT, Denis, P. , SKELT, Christopher
发明人： JOHNSON, Paul, A. , VU, Cung , TENCATE, James, A. , GUYER, Robert , LE BAS, Pierre-Yves , NIHEI, Kurt, T. , SCHMITT, Denis, P. , SKELT, Christopher
IPC分类号： G01V1/46
CPC分类号： G01V1/44 , G01V1/006 , G01V2210/125 , G01V2210/127 , G01V2210/588
摘要： In some aspects of the disclosure, a method for creating three-dimensional images of non-linear properties and the compressional to shear velocity ratio in a region (180) remote from a borehole (110) using a conveyed logging tool (140) is disclosed. In some aspects, the method includes arranging a first source (105) in the borehole and generating a steered beam of elastic energy at a first frequency; arranging a second source (115) in the borehole (110) and generating a steerable beam of elastic energy at a second frequency, such that the steerable beam at the first frequency and the steerable beam at the second frequency intercept at a location (130) away from the borehole (110); receiving at the borehole (110) by a sensor (135) a third elastic wave, created by a three wave mixing process, with a frequency equal to a difference between the first and second frequencies and a direction of propagation towards the borehole.
摘要翻译：在本公开的一些方面，公开了一种用于使用运送的测井工具（140）在远离钻孔（110）的区域（180）中创建非线性特性的三维图像和压缩剪切速度比的方法。在一些方面，所述方法包括在钻孔中布置第一源（105）并且以第一频率产生具有弹性能量的转向束; 在钻孔（110）中布置第二源（115）并且以第二频率产生可转向的弹性能量束，使得在第一频率处的可操纵波束和在第二频率处的可操纵波束在位置（130）处截距，远离钻孔（110）; 通过传感器（135）在钻孔（110）处接收通过三波混合过程产生的具有等于第一和第二频率之间的差异的频率和向井眼传播的方向的第三弹性波。

4. 发明申请

WO2011152956A3 DEVICE AND METHOD FOR GENERATING A COLLIMATED BEAM OF ACOUSTIC ENERGY IN A BOREHOLE 审中-公开
标题翻译：用于产生孔中的声学能量的装置和方法
公开(公告)号：WO2011152956A3
公开(公告)日：2012-02-23
申请号：PCT/US2011035595
申请日：2011-05-06
申请人： CHEVRON USA INC , LOS ALAMOS NAT SECURITY LLC , VU CUNG KHAC , SINHA DIPEN N , PANTEA CRISTIAN , NIHEI KURT T , SCHMITT DENIS P , SKELT CHRISTOPHER
发明人： VU CUNG KHAC , SINHA DIPEN N , PANTEA CRISTIAN , NIHEI KURT T , SCHMITT DENIS P , SKELT CHRISTOPHER
IPC分类号： G01V1/42 , G01V1/46
CPC分类号： G01V1/00 , G01V1/006 , G01V1/46
摘要： In some aspects of the invention, a method of generating a beam of acoustic energy in a borehole is disclosed. The method includes generating a first acoustic wave at a first frequency; generating a second acoustic wave at a second frequency different than the first frequency, wherein the first acoustic wave and second acoustic wave are generated by at least one transducer carried by a tool located within the borehole; transmitting the first and the second acoustic waves into an acoustically non-linear medium, wherein the composition of the non-linear medium produces a collimated beam by a non-linear mixing of the first and second acoustic waves, wherein the collimated beam has a frequency based upon a difference between the first frequency and the second frequency; and transmitting the collimated beam through a diverging acoustic lens to compensate for a refractive effect caused by the curvature of the borehole.
摘要翻译：在本发明的一些方面，公开了一种在钻孔中产生声能束的方法。该方法包括以第一频率产生第一声波; 在不同于所述第一频率的第二频率处产生第二声波，其中所述第一声波和第二声波由位于所述钻孔内的工具承载的至少一个换能器产生; 将第一和第二声波传输到声学非线性介质中，其中非线性介质的组成通过第一和第二声波的非线性混合产生准直波束，其中准直波束具有频率基于所述第一频率和所述第二频率之间的差; 并且通过发散的声透镜发送准直光束以补偿由钻孔的曲率引起的折射效应。

5. 发明申请

WO2011152957A2 DEVICE AND METHOD FOR GENERATING A BEAM OF ACOUSTIC ENERGY FROM A BOREHOLE, AND APPLICATIONS THEREOF 审中-公开
标题翻译：用于从井眼产生声能的光束的装置和方法及其应用
公开(公告)号：WO2011152957A2
公开(公告)日：2011-12-08
申请号：PCT/US2011/035608
申请日：2011-05-06
申请人： CHEVRON U.S.A. INC. , LOS ALAMOS NATIONAL SECURITY LLC , VU, Cung Khac , SINHA, Dipen, N. , PANTEA, Cristian , NIHEI, Kurt, T. , SCHMITT, Denis, P. , SKELT, Christopher
发明人： VU, Cung Khac , SINHA, Dipen, N. , PANTEA, Cristian , NIHEI, Kurt, T. , SCHMITT, Denis, P. , SKELT, Christopher
IPC分类号： G01V1/52
CPC分类号： G01V1/46
摘要： In some aspects of the invention, a method of generating a beam of acoustic energy in a borehole is disclosed. The method includes generating a first broad-band acoustic pulse at a first broad-band frequency range having a first central frequency and a first bandwidth spread; generating a second broad-band acoustic pulse at a second broad-band frequency range different than the first frequency range having a second central frequency and a second bandwidth spread, wherein the first acoustic pulse and second acoustic pulse are generated by at least one transducer arranged on a tool located within the borehole; and transmitting the first and the second broad-band acoustic pulses into an acoustically non-linear medium, wherein the composition of the non-linear medium produces a collimated pulse by a non-linear mixing of the first and second acoustic pulses, wherein the collimated pulse has a frequency equal to the difference in frequencies between the first central frequency and the second central frequency and a bandwidth spread equal to the sum of the first bandwidth spread and the second bandwidth spread.
摘要翻译：在本发明的一些方面，公开了一种在钻孔中产生声能束的方法。该方法包括：在具有第一中心频率和第一带宽扩展的第一宽带频率范围内产生第一宽带声波脉冲; 在与具有第二中心频率和第二带宽扩展的第一频率范围不同的第二宽带频率范围处产生第二宽带声波脉冲，其中所述第一声脉冲和第二声脉冲由至少一个换能器布置位于钻孔内的工具上; 以及将所述第一和第二宽带声脉冲发送到声学非线性介质中，其中所述非线性介质的组成通过所述第一和第二声学脉冲的非线性混合产生准直脉冲，其中所述准直脉冲的频率等于第一中心频率和第二中心频率之间的频率差，以及等于第一带宽扩展和第二带宽扩展之和的带宽扩展。

6. 发明申请

WO2011152956A2 DEVICE AND METHOD FOR GENERATING A BEAM OF ACOUSTIC ENERGY FROM A BOREHOLE, AND APPLICATIONS THEREOF 审中-公开
标题翻译：用于从井眼产生声能的光束的装置和方法及其应用
公开(公告)号：WO2011152956A2
公开(公告)日：2011-12-08
申请号：PCT/US2011/035595
申请日：2011-05-06
申请人： CHEVRON U.S.A. INC. , LOS ALAMOS NATIONAL SECURITY LLC , VU, Cung Khac , SINHA, Dipen N. , PANTEA, Cristian , NIHEI, Kurt T. , SCHMITT, Denis P. , SKELT, Christopher
发明人： VU, Cung Khac , SINHA, Dipen N. , PANTEA, Cristian , NIHEI, Kurt T. , SCHMITT, Denis P. , SKELT, Christopher
IPC分类号： G01V1/42
CPC分类号： G01V1/00 , G01V1/006 , G01V1/46
摘要： In some aspects of the invention, a method of generating a beam of acoustic energy in a borehole is disclosed. The method includes generating a first acoustic wave at a first frequency; generating a second acoustic wave at a second frequency different than the first frequency, wherein the first acoustic wave and second acoustic wave are generated by at least one transducer carried by a tool located within the borehole; transmitting the first and the second acoustic waves into an acoustically non-linear medium, wherein the composition of the non-linear medium produces a collimated beam by a non-linear mixing of the first and second acoustic waves, wherein the collimated beam has a frequency based upon a difference between the first frequency and the second frequency; and transmitting the collimated beam through a diverging acoustic lens to compensate for a refractive effect caused by the curvature of the borehole.
摘要翻译：在本发明的一些方面，公开了一种在钻孔中产生声能束的方法。该方法包括以第一频率产生第一声波; 在不同于所述第一频率的第二频率处产生第二声波，其中所述第一声波和第二声波由位于所述钻孔内的工具承载的至少一个换能器产生; 将第一和第二声波传输到声学非线性介质中，其中非线性介质的组成通过第一和第二声波的非线性混合产生准直波束，其中准直波束具有频率基于所述第一频率和所述第二频率之间的差; 并且通过发散的声透镜发送准直光束以补偿由钻孔的曲率引起的折射效应。

7. 发明申请

WO2010002607A1 DEVICE AND METHOD FOR GENERATING A BEAM OF ACOUSTIC ENERGY FROM A BOREHOLE, AND APPLICATIONS THEREOF 审中-公开
标题翻译：用于从井眼产生声能的光束的装置和方法及其应用
公开(公告)号：WO2010002607A1
公开(公告)日：2010-01-07
申请号：PCT/US2009/047934
申请日：2009-06-19
申请人： CHEVRON U.S.A., INC. , LOS ALAMOS NATIONAL SECURITY , VU, Cung, Khac , SINHA, Dipen, N. , PANTEA, Cristian , NIHEI, Kurt , SCHMITT, Denis, P. , SKELT, Christopher
发明人： VU, Cung, Khac , SINHA, Dipen, N. , PANTEA, Cristian , NIHEI, Kurt , SCHMITT, Denis, P. , SKELT, Christopher
IPC分类号： G01V1/52
CPC分类号： G01V1/46
摘要： 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：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。

8. 发明申请

WO2009152416A2 METHOD AND SYSTEM FOR GENERATING A BEAM OF ACOUSTIC ENERGY FROM A BOREHOLE, AND APPLICATIONS THEREOF 审中-公开
标题翻译：用于从井眼产生声波能量的方法和系统及其应用
公开(公告)号：WO2009152416A2
公开(公告)日：2009-12-17
申请号：PCT/US2009/047184
申请日：2009-06-12
申请人： CHEVRON U.S.A. INC. , JOHNSON, Paul, A. , GUYER, Robert , LE BAS, Pierre-Yves , VU, Cung , NIHEI, Kurt , SCHMITT, Denis, P. , SKELT, Christopher
发明人： JOHNSON, Paul, A. , GUYER, Robert , LE BAS, Pierre-Yves , VU, Cung , NIHEI, Kurt , SCHMITT, Denis, P. , SKELT, Christopher
IPC分类号： G01V1/42
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 electro-mechanical 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旋转和通过控制来自发射器元件或机电连杆的信号的相对相位的倾斜旋转来定向。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。

9. 发明申请

WO2012064842A3 SYSTEM AND METHOD FOR GENERATING MICRO-SEISMIC EVENTS AND CHARACTERIZING PROPERTIES OF A MEDIUM WITH NON-LINEAR ACOUSTIC INTERACTIONS 审中-公开
标题翻译：用于生成微地震事件的系统和方法以及具有非线性声学相互作用的介质的特性
公开(公告)号：WO2012064842A3
公开(公告)日：2013-06-13
申请号：PCT/US2011059973
申请日：2011-11-09
申请人： CHEVRON USA INC , LOS ALAMOS NAT SECURITY LLC , VU CUNG KHAC , NIHEI KURT T , JOHNSON PAUL A , GUYER ROBERT A , TEN CATE JAMES A , LE BAS PIERRE-YVES , LARMAT CARENE S
发明人： VU CUNG KHAC , NIHEI KURT T , JOHNSON PAUL A , GUYER ROBERT A , TEN CATE JAMES A , LE BAS PIERRE-YVES , LARMAT CARENE S
IPC分类号： G01V1/46 , 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 method and system for generating a micro-seismic event in a medium from a non-linear interaction to characterize the medium is provided. The method includes generating, by a first acoustic source (SI, 12), a first coded acoustic signal comprising a first plurality of pulses arranged as a time sequence, each pulse comprising a modulated signal at a central frequency; and generating, by a second acoustic source (S2,14), a second coded acoustic signal comprising a second plurality of pulses arranged as a time sequence, wherein each pulse comprises a modulated signal and a central frequency of the modulated signal within each pulse in the second plurality of pulses is a selected fraction d of the central frequency of the modulated signal for the corresponding pulse in the first plurality of pulses. The method further includes receiving, by a receiver (R), a detected signal including a third signal being generated by a non-linear mixing process from the first acoustic signal and the second acoustic signal in the mixing zone; performing, by a processor, data processing on the received signal, or correlating with a coded signal template, or both, to extract the third signal generated by the non-linear mixing process over noise or over signals generated by a linear interaction process, or both, to obtain an emulated micro-seismic event signal occurring at the mixing zone; and characterizing properties of the medium or creating a 3D image of the properties of the medium, or both, based on the emulated micro-seismic event signal.
摘要翻译：提供了一种用于从非线性相互作用产生介质中的微地震事件以表征介质的方法和系统。该方法包括通过第一声源（SI，12）产生包括排列成时间序列的第一多个脉冲的第一编码声信号，每个脉冲包括中心频率的调制信号; 以及通过第二声源（S2,14）产生包括排列为时间序列的第二多个脉冲的第二编码声信号，其中每个脉冲包括调制信号和在每个脉冲内的调制信号的中心频率所述第二多个脉冲是所述第一多个脉冲中相应脉冲的调制信号的中心频率的选定分数d。该方法还包括由接收器（R）接收包括由混合区中的第一声信号和第二声信号通过非线性混合处理产生的第三信号的检测信号; 通过处理器对接收到的信号执行数据处理或与编码信号模板或两者相关，以通过由线性相互作用过程产生的噪声或过度信号来提取由非线性混合处理产生的第三信号，或以获得在混合区发生的模拟微地震事件信号; 并且基于仿真的微地震事件信号来表征介质的性质或者创建介质的属性的3D图像，或两者。

10. 发明申请

WO2012064842A2 SYSTEM AND METHOD FOR GENERATING MICRO-SEISMIC EVENTS AND CHARACTERIZING PROPERTIES OF A MEDIUM WITH NON-LINEAR ACOUSTIC INTERACTIONS 审中-公开
标题翻译：用于生成微地震事件的系统和方法以及具有非线性声学相互作用的介质的特性
公开(公告)号：WO2012064842A2
公开(公告)日：2012-05-18
申请号：PCT/US2011/059973
申请日：2011-11-09
申请人： CHEVRON U.S.A. INC. , LOS ALAMOS NATIONAL SECURITY LLC , VU, Cung Khac , NIHEI, Kurt T. , JOHNSON, Paul A. , GUYER, Robert A. , TEN CATE, James A. , LE BAS, Pierre-Yves , LARMAT, Carene S.
发明人： VU, Cung Khac , NIHEI, Kurt T. , JOHNSON, Paul A. , GUYER, Robert A. , TEN CATE, James A. , LE BAS, Pierre-Yves , LARMAT, Carene S.
IPC分类号： A61K39/44 , C12N15/13 , C12N15/63 , C12N1/19 , C12N1/21 , C12N5/10 , C07K16/28 , A61K39/395 , A61P35/00
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 method and system for generating a micro-seismic event in a medium from a non-linear interaction to characterize the medium is provided. The method includes generating, by a first acoustic source, a first coded acoustic signal comprising a first plurality of pulses arranged as a time sequence, each pulse comprising a modulated signal at a central frequency; and generating, by a second acoustic source, a second coded acoustic signal comprising a second plurality of pulses arranged as a time sequence, wherein each pulse comprises a modulated signal and a central frequency of the modulated signal within each pulse in the second plurality of pulses is a selected fraction d of the central frequency of the modulated signal for the corresponding pulse in the first plurality of pulses. The method further includes receiving, by a receiver, a detected signal including a third signal being generated by a non-linear mixing process from the first acoustic signal and the second acoustic signal in the mixing zone; performing, by a processor, data processing on the received signal, or correlating with a coded signal template, or both, to extract the third signal generated by the non-linear mixing process over noise or over signals generated by a linear interaction process, or both, to obtain an emulated micro-seismic event signal occurring at the mixing zone; and characterizing properties of the medium or creating a 3D image of the properties of the medium, or both, based on the emulated micro-seismic event signal.
摘要翻译：提供了一种用于从非线性相互作用产生介质中的微地震事件以表征介质的方法和系统。该方法包括通过第一声源产生包括排列成时间序列的第一多个脉冲的第一编码声信号，每个脉冲包括中心频率的调制信号; 以及通过第二声源产生包括排列为时间序列的第二多个脉冲的第二编码声信号，其中每个脉冲包括在所述第二多个脉冲中的每个脉冲内的调制信号和调制信号的中心频率是第一多个脉冲中对应脉冲的调制信号的中心频率的选择分数d。该方法还包括由接收器接收包括由混合区中的第一声信号和第二声信号通过非线性混合处理产生的第三信号的检测信号; 通过处理器对接收到的信号执行数据处理或与编码信号模板或两者相关，以通过由线性相互作用过程产生的噪声或过度信号来提取由非线性混合处理产生的第三信号，或以获得在混合区发生的模拟微地震事件信号; 并且基于仿真的微地震事件信号来表征介质的性质或者创建介质的属性的3D图像，或两者。

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