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1.
公开(公告)号:US08605542B2
公开(公告)日:2013-12-10
申请号:US12788270
申请日:2010-05-26
申请人: Richard T. Coates , Douglas E. Miller , Arthur H. Hartog , Colin A. Wilson , Dominic Brady , Henry Menkiti , Francois M. Auzerais , Ian David Richard Bradford
发明人: Richard T. Coates , Douglas E. Miller , Arthur H. Hartog , Colin A. Wilson , Dominic Brady , Henry Menkiti , Francois M. Auzerais , Ian David Richard Bradford
IPC分类号: G01V1/48
CPC分类号: G01H9/004 , E21B47/01 , G01D5/35361 , G01V1/18 , G01V1/208 , G01V1/226 , G01V1/40 , G01V1/42 , G01V1/52
摘要: A fiber optic distributed vibration system for detecting seismic signals in an earth formation is provided. The system includes a fiber optic cable deployed in a borehole that extends into the earth formation and which is configured to react along its length to a seismic wave incident on the fiber optic cable from outside the borehole. An optical source launches an optical signal into the fiber optic cable while the seismic wave is incident thereon. A receiver detects coherent Rayleigh noise (CRN) produced in response to the optical signal. A processing circuit processes the detected CRN signal to determine characteristics of the earth formation.
摘要翻译: 提供了一种用于检测地层中地震信号的光纤分布式振动系统。 该系统包括布置在钻孔中的光缆,其延伸到地层中并被构造成沿着其长度反射从钻孔外部入射在光纤电缆上的地震波。 当地震波入射时,光源将光信号发射到光纤电缆中。 接收机检测响应于光信号产生的相干瑞利噪声(CRN)。 处理电路处理检测到的CRN信号以确定地层的特征。
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2.
公开(公告)号:US20110292763A1
公开(公告)日:2011-12-01
申请号:US12788270
申请日:2010-05-26
申请人: Richard T. Coates , Douglas E. Miller , Arthur H. Hartog , Colin A. Wilson , Dominic Brady , Henry Menkiti , Francois M. Auzerais , Ian David Richard Bradford
发明人: Richard T. Coates , Douglas E. Miller , Arthur H. Hartog , Colin A. Wilson , Dominic Brady , Henry Menkiti , Francois M. Auzerais , Ian David Richard Bradford
IPC分类号: G01V1/48
CPC分类号: G01H9/004 , E21B47/01 , G01D5/35361 , G01V1/18 , G01V1/208 , G01V1/226 , G01V1/40 , G01V1/42 , G01V1/52
摘要: A fiber optic distributed vibration system for detecting seismic signals in an earth formation is provided. The system includes a fiber optic cable deployed in a borehole that extends into the earth formation and which is configured to react along its length to a seismic wave incident on the fiber optic cable from outside the borehole. An optical source launches an optical signal into the fiber optic cable while the seismic wave is incident thereon. A receiver detects coherent Rayleigh noise (CRN) produced in response to the optical signal. A processing circuit processes the detected CRN signal to determine characteristics of the earth formation.
摘要翻译: 提供了一种用于检测地层中地震信号的光纤分布式振动系统。 该系统包括布置在钻孔中的光缆,其延伸到地层中并被构造成沿着其长度反射从钻孔外部入射在光纤电缆上的地震波。 当地震波入射时,光源将光信号发射到光纤电缆中。 接收机检测响应于光信号产生的相干瑞利噪声(CRN)。 处理电路处理检测到的CRN信号以确定地层的特征。
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