公开(公告)号：US06631327B2

公开(公告)日：2003-10-07

申请号：US09957919

申请日：2001-09-21

申请人： Chaur-Jian Hsu ,  Jahir A. Pabon ,  Bikash A. Sinha

发明人： Chaur-Jian Hsu ,  Jahir A. Pabon ,  Bikash A. Sinha

IPC分类号： G01V140

CPC分类号： G01V1/46 ,  G01V1/284 ,  G01V1/44 ,  G01V1/52

摘要： A tool generates signals indicative of shear wave slowness of the formation surrounding a borehole. The tool comprises a collar portion adapted for mounting in a drill string, a quadrupole sonic transmitter mounted to the collar portion, and a quadrupole sonic receiver array mounted to the collar spaced apart from the transmitter. A method determines shear wave slowness of the formation. The method includes propagating quadrupole wave energy into the formation and detecting quadrupole dispersive waveforms received at a second location. Formation shear wave slowness is calculated using dispersive slowness time coherence processing

摘要翻译： 工具产生指示围绕钻孔的地层的剪切波缓慢的信号。 该工具包括适于安装在钻柱中的套环部分，安装到套环部分的四极声音发射器以及安装到与发射器间隔开的轴环的四极声波接收器阵列。一种方法确定地层的剪切波慢度。 该方法包括将四极波能量传播到地层中并检测在第二位置接收的四极分散波形。 使用色散慢时间相干处理计算形成剪切波慢度

公开(公告)号：US07257489B2

公开(公告)日：2007-08-14

申请号：US10488160

申请日：2002-09-09

申请人： Chaur-Jian Hsu ,  Jahir A. Pabon ,  Bikash K. Sinha ,  Sergey Asvadurov

发明人： Chaur-Jian Hsu ,  Jahir A. Pabon ,  Bikash K. Sinha ,  Sergey Asvadurov

IPC分类号： G01V1/40 ,  G01V3/00

CPC分类号： G01V1/46 ,  G01V1/284 ,  G01V1/44 ,  G01V1/52

摘要： A tool generates signals indicative a shear wave slowness of the formation surrounding a borehole. The tool comprises a collar portion adapted for mounting in a drill string, a quadrupole sonic transmitter mounted to the collar portion, and a quadrupole sonic receiver array mounted to the collar spaced apart from the transmitter. A method determines shear wave slowness of the formation. The method includes propagating quadrupole wave energy into the formation and detecting quadrupole dispersive waveform received at a second location. Formation shear wave slowness is calculated using dispersive slowness time coherence processing.

摘要翻译： 工具产生指示围绕钻孔的地层的剪切波缓慢的信号。 该工具包括适于安装在钻柱中的套环部分，安装到套环部分的四极声音发射器以及安装到与发射器间隔开的轴环的四极声波接收器阵列。 一种方法确定地层的剪切波慢度。 该方法包括将四极波能量传播到地层并检测在第二位置接收的四极分散波形。 使用色散慢时间相干处理计算形成剪切波慢度。

公开(公告)号：US06643221B1

公开(公告)日：2003-11-04

申请号：US09992761

申请日：2001-11-06

申请人： Chaur-Jian Hsu ,  Jahir A. Pabon ,  Richard D. Joyce ,  Ralph M. D'Angelo ,  Jeffrey B. Aron ,  Pierre Campanac ,  Lennox Reid ,  H. Charles Straub ,  Cengiz Esmersoy ,  Darryl Grigor

发明人： Chaur-Jian Hsu ,  Jahir A. Pabon ,  Richard D. Joyce ,  Ralph M. D'Angelo ,  Jeffrey B. Aron ,  Pierre Campanac ,  Lennox Reid ,  H. Charles Straub ,  Cengiz Esmersoy ,  Darryl Grigor

IPC分类号： G01V140

CPC分类号： G01V1/523 ,  Y10S367/911

摘要： In one aspect, the invention involves an acoustic logging tool for performing acoustic investigations of subsurface geological formations. In one embodiment, the tool comprises a generally longitudinally extending tool body adapted for positioning in a borehole. At least one transmitter is mounted on the tool body to emit acoustic energy. At least one receiver is also mounted on the tool body at a location axially displaced from the at least one transmitter. The receiver is adapted to receive acoustic energy. An attenuator is also positioned along the body and includes at least one cavity having a plurality of particles disposed therein. The attenuator as disclosed herein may be applied to other logging tools for protecting tool components and enhancing measurement quality. Methods for attenuating acoustic energy transmitted through the body of an acoustic logging tool or other logging tools are also disclosed.

摘要翻译： 一方面，本发明涉及一种用于对地下地质构造进行声学研究的声学测井工具。 在一个实施例中，该工具包括适于定位在钻孔中的大致纵向延伸的工具主体。 至少一个发射器安装在工具主体上以发射声能。 至少一个接收器也在与所述至少一个发射器轴向偏移的位置处安装在所述工具主体上。 接收器适于接收声能。 衰减器也沿主体定位，并且包括至少一个具有多个颗粒的空腔，其中设置有多个颗粒。 本文公开的衰减器可以应用于其他测井工具，用于保护工具部件并提高测量质量。 还公开了用于衰减通过声学测井工具或其他测井工具的身体传输的声能的方法。

公开(公告)号：US08612154B2

公开(公告)日：2013-12-17

申请号：US11877114

申请日：2007-10-23

申请人： Chaur-Jian Hsu

发明人： Chaur-Jian Hsu

IPC分类号： G01V1/40

CPC分类号： G01V1/44

摘要： A downhole logging tool is equipped with a modified Helmholtz resonator for facilitating acoustic formation evaluation and reservoir characterization. The resonator permits calculation of sound speed and viscosity of the fluid in the resonator cavity. The presence of gas bubbles in the fluid may also be detected. The modified Helmholtz resonator includes at least two openings so that fluid can flow through the resonator cavity. Because fluid can flow through the resonator cavity, local fluid can be measured under local conditions, e.g., downhole temperature, pressure, and gas influx from formations. Further, the modified Helmholtz resonator utilizes an acoustic signal at or near the frequency of interest for at least some acoustic logging tools.

摘要翻译： 井下测井工具配备了改进的亥姆霍兹共振器，用于促进声学形成评估和油藏表征。 谐振器允许计算谐振器腔中的流体的声速和粘度。 也可以检测流体中气泡的存在。 改进的亥姆霍兹共振器包括至少两个开口，使得流体可以流过谐振腔。 因为流体可以流过谐振器腔，所以可以在局部条件下测量局部流体，例如井下温度，压力和从地层中排出的气体。 此外，改进的亥姆霍兹共振器利用至少一些声学测井工具的感兴趣频率处或附近的声学信号。

公开(公告)号：US08321133B2

公开(公告)日：2012-11-27

申请号：US11877047

申请日：2007-10-23

申请人： Chaur-Jian Hsu ,  Ralph M. D'Angelo

发明人： Chaur-Jian Hsu ,  Ralph M. D'Angelo

IPC分类号： G01N15/08

CPC分类号： G01V1/44 ,  E21B49/081 ,  E21B49/10 ,  G01N29/024 ,  G01N2291/012 ,  G01N2291/02416 ,  G01N2291/103

摘要： A technique for utilizing tube waves to measure sound speed of fluids and other properties in the frequency range of about 5 to 100 kHz. A drill string is equipped with a sensor tube having a cavity filled with a downhole fluid such as borehole mud or formation fluid. An acoustic transmitter and an array of acoustic receivers are mounted on the tube in direct contact with the fluid. Processing circuitry calculates a property, e.g., sound speed, of the fluid based on time-of-flight of an acoustic signal generated by the transmitter and received by the array of receivers. Alternatively change in signal phase as a function of frequency may be employed by the processing circuitry. The technique is particularly suited to measuring the sound speed of borehole mud in situ.

摘要翻译： 在大约5到100kHz的频率范围内利用管波测量流体的声速和其它性质的技术。 钻柱配备有传感器管，该传感器管具有填充有诸如钻孔泥浆或地层流体的井下流体的空腔。 声发射器和声学接收器阵列安装在与流体直接接触的管上。 处理电路基于由发射器产生并由接收机阵列接收的声信号的飞行时间来计算流体的性质，例如声速。 替代地，作为频率的函数的信号相位的改变可以由处理电路采用。 该技术特别适用于原位测量井眼泥浆的声速。

公开(公告)号：US07623412B2

公开(公告)日：2009-11-24

申请号：US11369433

申请日：2006-03-07

申请人： Jahir Pabon ,  Chaur-Jian Hsu ,  Bikash K. Sinha

发明人： Jahir Pabon ,  Chaur-Jian Hsu ,  Bikash K. Sinha

IPC分类号： G01V1/00

CPC分类号： G01V1/50

摘要： Methods and apparatus facilitating measurement of anisotropy are disclosed. According to some aspects, anisotropy can be determined while drilling. Monopole/quadrupole interactions, as well as monitoring dipole excitations and other methods, may be used to find the principal shear directions of a formation while drilling or during wireline or other operations.

摘要翻译： 公开了各向异性测量方法和装置。 根据一些方面，钻孔时可以确定各向异性。 可以使用单极/四极相互作用以及监测偶极子激发和其它方法来在钻井或电缆或其它操作期间找到地层的主要剪切方向。

公开(公告)号：US20090101432A1

公开(公告)日：2009-04-23

申请号：US11877114

申请日：2007-10-23

申请人： Chaur-Jian Hsu

发明人： Chaur-Jian Hsu

IPC分类号： G01V1/44

CPC分类号： G01V1/44

摘要： A downhole logging tool is equipped with a modified Helmholtz resonator for facilitating acoustic formation evaluation and reservoir characterization. The resonator permits calculation of sound speed and viscosity of the fluid in the resonator cavity. The presence of gas bubbles in the fluid may also be detected. The modified Helmholtz resonator includes at least two openings so that fluid can flow through the resonator cavity. Because fluid can flow through the resonator cavity, local fluid can be measured under local conditions, e.g., downhole temperature, pressure, and gas influx from formations. Further, the modified Helmholtz resonator utilizes an acoustic signal at or near the frequency of interest for at least some acoustic logging tools.

摘要翻译： 井下测井工具配备了改进的亥姆霍兹共振器，用于促进声学形成评估和油藏表征。 谐振器允许计算谐振器腔中的流体的声速和粘度。 也可以检测流体中气泡的存在。 改进的亥姆霍兹共振器包括至少两个开口，使得流体可以流过谐振腔。 因为流体可以流过谐振器腔，所以可以在局部条件下测量局部流体，例如井下温度，压力和从地层中排出的气体。 此外，改进的亥姆霍兹共振器利用至少一些声学测井工具的感兴趣频率处或附近的声学信号。

公开(公告)号：US5331604A

公开(公告)日：1994-07-19

申请号：US981948

申请日：1992-11-24

申请人： Shu-Kong Chang ,  Chaur-Jian Hsu

发明人： Shu-Kong Chang ,  Chaur-Jian Hsu

IPC分类号： G01V1/00 ,  G01V1/44 ,  G01V1/40

CPC分类号： G01V1/44 ,  G01V1/005

摘要： The present invention offers methods and apparatus for low-frequency sonic borehole logging with tube waves using discrete frequency measurements. A source transducer emits sonic energy at a location in a borehole of at least one discrete frequency which induces propagation of tube waves in the borehole; sonic energy of the tube waves is received at multiple receiver locations in the borehole, the multiple receiver locations being spaced apart from one another and from the source transducer location; and at each said receiver location, the complex pressure response (amplitude and phase, or real and imaginary parts) of a receiver to the received sonic energy of the tube waves is detected relative to a phase reference. The detected complex pressure response may be processed to determine phase velocity of the tube waves in the borehole as a function of frequency, to determine attenuation of the tube waves in the borehole as a function of frequency and/or to determine attenuation and amplitude as functions of frequency. In addition, tube wave reflection coefficients near fractures, bed boundaries, etc., may be calculated. The tube wave data are useful for permeability correlation, fracture evaluation, rock rigidity studies and other purposes.

摘要翻译： 本发明提供使用离散频率测量的用于低频声波井眼测井的方法和装置，其中使用管波。 源传感器在至少一个离散频率的钻孔中的位置处发射声波能量，其引起井眼中的管波的传播; 在井眼中的多个接收器位置处接收管波的声能，多个接收器位置彼此间隔开并且与源传感器位置相隔; 并且在每个所述接收器位置处，相对于相位参考来检测接收器对管波的接收声能的复合压力响应（振幅和相位，或实部和虚部）。 可以处理检测到的复合压力响应以确定作为频率的函数的钻孔中的管波的相速度，以确定作为频率的函数的钻孔中的管波的衰减和/或将衰减和振幅确定为函数 的频率。 此外，可以计算靠近裂缝，床边界等的管波反射系数。 管波数据可用于渗透率相关性，断裂评估，岩石刚度研究等目的。

公开(公告)号：US08102732B2

公开(公告)日：2012-01-24

申请号：US12579798

申请日：2009-10-15

申请人： Jahir Pabon ,  Chaur-Jian Hsu ,  Bikash K. Sinha

发明人： Jahir Pabon ,  Chaur-Jian Hsu ,  Bikash K. Sinha

IPC分类号： G01V1/00

CPC分类号： G01V1/50

摘要： Methods and apparatus facilitating measurement of anisotropy are disclosed. According to some aspects, anisotropy can be determined while drilling. Monopole/quadrupole interactions, as well as monitoring dipole excitations and other methods, may be used to find the principal shear directions of a formation while drilling or during wireline or other operations.

摘要翻译： 公开了各向异性测量方法和装置。 根据一些方面，钻孔时可以确定各向异性。 可以使用单极/四极相互作用以及监测偶极子激发和其它方法来在钻井或电缆或其它操作期间找到地层的主要剪切方向。

公开(公告)号：US20100034052A1

公开(公告)日：2010-02-11

申请号：US12579798

申请日：2009-10-15

申请人： Jahir Pabon ,  Chaur-Jian Hsu ,  Bikash K. Sinha

发明人： Jahir Pabon ,  Chaur-Jian Hsu ,  Bikash K. Sinha

IPC分类号： G01V1/00

CPC分类号： G01V1/50

摘要： Methods and apparatus facilitating measurement of anisotropy are disclosed. According to some aspects, anisotropy can be determined while drilling. Monopole/quadrupole interactions, as well as monitoring dipole excitations and other methods, may be used to find the principal shear directions of a formation while drilling or during wireline or other operations.

摘要翻译： 公开了各向异性测量方法和装置。 根据一些方面，钻孔时可以确定各向异性。 可以使用单极/四极相互作用以及监测偶极子激发和其它方法来在钻井或电缆或其它操作期间找到地层的主要剪切方向。