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公开(公告)号：US07257489B2
公开(公告)日：2007-08-14
申请号：US10488160
申请日：2002-09-09
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。
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公开(公告)号：US20050000688A1
公开(公告)日：2005-01-06
申请号：US10488160
申请日：2002-09-09
申请人： Chaur-Jian Hsu , Jahir Pabon , Bikash Sinha , Sergey Asvadurov
发明人： Chaur-Jian Hsu , Jahir Pabon , Bikash Sinha , Sergey Asvadurov
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。
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