DETECTING BROADSIDE AND DIRECTIONAL ACOUSTIC SIGNALS WITH A FIBER OPTICAL DISTRIBUTED ACOUSTIC SENSING (DAS) ASSEMBLY
    1.
    发明申请
    DETECTING BROADSIDE AND DIRECTIONAL ACOUSTIC SIGNALS WITH A FIBER OPTICAL DISTRIBUTED ACOUSTIC SENSING (DAS) ASSEMBLY 有权
    用光纤分布式声学传感(DAS)组件检测广域和方向声学信号

    公开(公告)号:US20130211726A1

    公开(公告)日:2013-08-15

    申请号:US13518083

    申请日:2010-12-21

    IPC分类号: G01V1/34 G01H9/00

    摘要: A Distributed Acoustic Sensing (DAS) fiber optical assembly comprises adjacent lengths of optical fiber A, B with different directional acoustic sensitivities, for example by providing the first length of optical fiber A with a first coating 35, such as acrylate, and the second length of optical fiber B with a second coating 36, such as copper, wherein the first and second coatings 35 and 36 may be selected such that the Poisson's ratio of the first length of coated fiber A is different from the Poisson's ratio of the second length of coated fiber B. The different Poisson's ratios and/or other properties of the adjacent lengths of optical fiber A and B improve their directional acoustic sensitivity and their ability to detect broadside (radial) acoustic waves.

    摘要翻译: 分布式声学传感(DAS)光纤组件包括具有不同定向声学灵敏度的相邻长度的光纤A,B,例如通过为第一长度的光纤A提供第一涂层35,例如丙烯酸酯,第二长度 的光纤B具有第二涂层36,例如铜,其中可以选择第一和第二涂层35和36,使得涂覆纤维A的第一长度的泊松比不同于第二涂层36的泊松比 光纤A和B的相邻长度的不同泊松比和/或其他特性提高了它们的定向声学灵敏度及其检测宽侧(径向)声波的能力。

    Hydraulic fracture monitoring using active seismic sources with receivers in the treatment well
    2.
    发明授权
    Hydraulic fracture monitoring using active seismic sources with receivers in the treatment well 有权
    在处理井中采用活动地震源与接收器进行液压裂缝监测

    公开(公告)号:US09347313B2

    公开(公告)日:2016-05-24

    申请号:US14125544

    申请日:2012-06-11

    摘要: A method for obtaining information about a hydraulic fracturing operation in a fracture zone in a well, comprises a) providing at least one acoustic sensor in the well and at least one acoustic source, b) injecting fracturing fluid into the well so as to cause fractures in a fracture zone in the surrounding formation, c) using the acoustic source to send an acoustic signal and using the acoustic receiver to receive the signal, d) repeating step c) at least once, and e) processing the received signals using a microprocessor so as to obtain information about the fractures. The source may be at the earth's surface or in a second well. Step e) may comprise measuring first-arriving acoustic waves or measuring reflected or diffracted acoustic waves. The information gained in step e) may be used to control the injection of fracturing fluid or detect out-of-zone water injection.

    摘要翻译: 一种用于获得关于井的断裂带中的水力压裂操作的信息的方法,包括:a)在所述井中提供至少一个声传感器和至少一个声源,b)将压裂流体注入所述井中以引起裂缝 在周围地层的断裂带中,c)使用声源发送声学信号并使用声学接收器接收信号,d)重复步骤c)至少一次,以及e)使用微处理器处理所接收的信号 以获得有关骨折的信息。 源可以在地球表面或第二井中。 步骤e)可以包括测量第一到达的声波或测量反射或衍射的声波。 在步骤e)中获得的信息可用于控制压裂流体的注入或检测区域外的注水。

    Detecting broadside and directional acoustic signals with a fiber optical distributed acoustic sensing (DAS) assembly
    3.
    发明授权
    Detecting broadside and directional acoustic signals with a fiber optical distributed acoustic sensing (DAS) assembly 有权
    用光纤分布式声学传感(DAS)组件检测宽边和定向声信号

    公开(公告)号:US09080949B2

    公开(公告)日:2015-07-14

    申请号:US13518083

    申请日:2010-12-21

    IPC分类号: G02B6/00 G01N29/24 G01H9/00

    摘要: A Distributed Acoustic Sensing(DAS) fiber optical assembly comprises adjacent lengths of optical fiber A, B with different directional acoustic sensitivities, for example by providing the first length of optical fiber A with a first coating 35, such as acrylate, and the second length of optical fiber B with a second coating 36, such as copper, wherein the first and second coatings 35 and 36 may be selected such that the Poisson's ratio of the first length of coated fiber A is different from the Poisson's ratio of the second length of coated fiber B. The different Poisson's ratios and/or other properties of the adjacent lengths of optical fiber A and B improve their directional acoustic sensitivity and their ability to detect broadside (radial) acoustic waves.

    摘要翻译: 分布式声学传感(DAS)光纤组件包括具有不同定向声学灵敏度的相邻长度的光纤A,B,例如通过为第一长度的光纤A提供第一涂层35,例如丙烯酸酯,第二长度 的光纤B具有第二涂层36,例如铜,其中可以选择第一和第二涂层35和36,使得涂覆纤维A的第一长度的泊松比不同于第二涂层36的泊松比 光纤A和B的相邻长度的不同泊松比和/或其他特性提高了它们的定向声学灵敏度及其检测宽侧(径向)声波的能力。

    AREAL MONITORING USING DISTRIBUTED ACOUSTIC SENSING
    4.
    发明申请
    AREAL MONITORING USING DISTRIBUTED ACOUSTIC SENSING 有权
    使用分布式声学感测进行AREAL监测

    公开(公告)号:US20120024051A1

    公开(公告)日:2012-02-02

    申请号:US13148437

    申请日:2009-10-15

    IPC分类号: E21B49/00

    CPC分类号: G01V8/16 E21B47/102

    摘要: A method for obtaining seismic information about a subsurface formation using at least one fiber optic cable having its proximal end coupled to a light source and a photodetector comprises: transmitting into the cable at least one light pulse; receiving at the photodetector a first and second light signals indicative of the physical status of at least one first cable section and at least one second cable section, respectively, wherein the first and second sections are selected so as to provide first and second information items, respectively; optionally, further processing at least one of the first and second information items so as to produce derivative information; and outputting at least one of the first, second, and derivative information items to a display; wherein the second item differs from the first item in at least one aspect selected from the group consisting of: resolution, area, and location.

    摘要翻译: 一种用于使用至少一根光纤电缆获得关于地下地层的地震信息的方法,所述至少一根光缆具有耦合到光源的近端和光电检测器,包括:将至少一个光脉冲传输到所述电缆; 在光电检测器处接收分别指示至少一个第一电缆部分和至少一个第二电缆部分的物理状态的第一和第二光信号,其中选择第一和第二部分以提供第一和第二信息项, 分别; 可选地,进一步处理第一和第二信息项中的至少一个,以产生导数信息; 并将第一,第二和导出信息项中的至少一个输出到显示器; 其中所述第二项目与至少一个方面中的所述第一项目不同,所述方面从由以下组成的组中选择:分辨率,面积和位置。

    Areal monitoring using distributed acoustic sensing
    5.
    发明授权
    Areal monitoring using distributed acoustic sensing 有权
    区域监测采用分布式声学检测

    公开(公告)号:US09003888B2

    公开(公告)日:2015-04-14

    申请号:US13148437

    申请日:2009-10-15

    IPC分类号: G01V8/16

    CPC分类号: G01V8/16 E21B47/102

    摘要: A method for obtaining seismic information about a subsurface formation using at least one fiber optic cable having its proximal end coupled to a light source and a photodetector comprises: transmitting into the cable at least one light pulse; receiving at the photodetector a first and second light signals indicative of the physical status of at least one first cable section and at least one second cable section, respectively, wherein the first and second sections are selected so as to provide first and second information items, respectively; optionally, further processing at least one of the first and second information items so as to produce derivative information; and outputting at least one of the first, second, and derivative information items to a display; wherein the second item differs from the first item in at least one aspect selected from the group consisting of: resolution, area, and location.

    摘要翻译: 一种用于使用至少一根光纤电缆获得关于地下地层的地震信息的方法,所述至少一根光缆具有耦合到光源的近端和光电检测器,包括:将至少一个光脉冲传输到所述电缆; 在光电检测器处接收分别指示至少一个第一电缆部分和至少一个第二电缆部分的物理状态的第一和第二光信号,其中选择第一和第二部分以提供第一和第二信息项, 分别; 可选地,进一步处理第一和第二信息项中的至少一个,以产生导数信息; 并将第一,第二和导出信息项中的至少一个输出到显示器; 其中所述第二项目与至少一个方面中的所述第一项目不同,所述方面从由以下组成的组中选择:分辨率,面积和位置。

    HYDRAULIC FRACTURE MONITORING USING ACTIVE SEISMIC SOURCES WITH RECEIVERS IN THE TREATMENT WELL
    6.
    发明申请
    HYDRAULIC FRACTURE MONITORING USING ACTIVE SEISMIC SOURCES WITH RECEIVERS IN THE TREATMENT WELL 有权
    使用活动地震源与治疗井中接收者进行液压破碎监测

    公开(公告)号:US20140290936A1

    公开(公告)日:2014-10-02

    申请号:US14125544

    申请日:2012-06-11

    IPC分类号: E21B47/14 E21B43/26

    摘要: A method for obtaining information about a hydraulic fracturing operation in a fracture zone in a well, comprises a) providing at least one acoustic sensor in the well and at least one acoustic source, b) injecting fracturing fluid into the well so as to cause fractures in a fracture zone in the surrounding formation, c) using the acoustic source to send an acoustic signal and using the acoustic receiver to receive the signal, d) repeating step c) at least once, and e) processing the received signals using a microprocessor so as to obtain information about the fractures. The source may be at the earth's surface or in a second well. Step e) may comprise measuring first-arriving acoustic waves or measuring reflected or diffracted acoustic waves. The information gained in step e) may be used to control the injection of fracturing fluid or detect out-of-zone water injection.

    摘要翻译: 一种用于获得关于井的断裂带中的水力压裂操作的信息的方法,包括:a)在所述井中提供至少一个声传感器和至少一个声源,b)将压裂流体注入所述井中以引起裂缝 在周围地层的断裂带中,c)使用声源发送声学信号并使用声学接收器接收信号,d)重复步骤c)至少一次,以及e)使用微处理器处理所接收的信号 以获得有关骨折的信息。 源可以在地球表面或第二井中。 步骤e)可以包括测量第一到达的声波或测量反射或衍射的声波。 在步骤e)中获得的信息可用于控制压裂流体的注入或检测区域外的注水。