Method of marine time-lapse seismic surveying
    1.
    发明授权
    Method of marine time-lapse seismic surveying 有权
    海上延时地震勘测方法

    公开(公告)号:US08929175B2

    公开(公告)日:2015-01-06

    申请号:US12920758

    申请日:2009-03-09

    IPC分类号: G01V1/38 G01V1/36

    摘要: A method of marine time-lapse seismic surveying of a subsurface formation, comprises providing a baseline survey, providing a monitor survey that includes information about changes in the subsurface relative to the baseline survey, recording a repeat survey so closely in time to one of either the baseline survey or the monitor survey that changes in the subsurface can be ignored but under different near-surface conditions from said one survey, computing a short-time survey difference between the repeat signals and signals comprising said one of either the baseline survey or the monitor survey, computing a monitor survey difference, matching the short-time survey difference and the monitor survey difference to derive a matched noise survey difference, subtracting the matched noise survey difference from the monitor survey difference, and outputting a noise suppressed survey difference based on the result of the subtraction.

    摘要翻译: 一种地下地层海洋延时地震测量方法,包括提供基线调查,提供监测调查,其中包括关于地下相对于基线调查的变化的信息,将时间上的重复调查及时地记录到任何一个 可以忽略地下变化的基线调查或监测调查,但是在所述一个调查的不同近地表条件下,计算重复信号和包括基线测量或基准测量之间的所述信号之间的短时间测量差异 监测调查,计算监测测量差异,匹配短时间测量差异和监测测量差异,得出匹配噪声测量差异,从监测测量差异中减去匹配噪声测量差异,并输出噪声抑制测量差异 减法的结果。

    METHOD OF MARINE TIME-LAPSE SEISMIC SURVEYING
    2.
    发明申请
    METHOD OF MARINE TIME-LAPSE SEISMIC SURVEYING 有权
    海洋时空地震测量方法

    公开(公告)号:US20110038228A1

    公开(公告)日:2011-02-17

    申请号:US12920758

    申请日:2009-03-09

    IPC分类号: G01V1/38

    摘要: A method of marine time-lapse seismic surveying of a subsurface formation, comprises providing a baseline survey, providing a monitor survey that includes information about changes in the subsurface relative to the baseline survey, recording a repeat survey so closely in time to one of either the baseline survey or the monitor survey that changes in the subsurface can be ignored but under different near-surface conditions from said one survey, computing a short-time survey difference between the repeat signals and signals comprising said one of either the baseline survey or the monitor survey, computing a monitor survey difference, matching the short-time survey difference and the monitor survey difference to derive a matched noise survey difference, subtracting the matched noise survey difference from the monitor survey difference, and outputting a noise suppressed survey difference based on the result of the subtraction.

    摘要翻译: 一种地下地层海洋延时地震测量方法,包括提供基线调查,提供监测调查,其中包括关于地下相对于基线调查的变化的信息,将时间上的重复调查及时地记录到任何一个 可以忽略地下变化的基线调查或监测调查,但是在所述一个调查的不同近地表条件下,计算重复信号和包括基线测量或基准测量之间的所述信号之间的短时间测量差异 监测调查,计算监测测量差异,匹配短时间测量差异和监测测量差异,得出匹配噪声测量差异,从监测测量差异中减去匹配噪声测量差异,并输出噪声抑制测量差异 减法的结果。

    DETECTING BROADSIDE AND DIRECTIONAL ACOUSTIC SIGNALS WITH A FIBER OPTICAL DISTRIBUTED ACOUSTIC SENSING (DAS) ASSEMBLY
    3.
    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。

    Method for monitoring a multi-layered system
    4.
    发明授权
    Method for monitoring a multi-layered system 有权
    监控多层系统的方法

    公开(公告)号:US08077546B2

    公开(公告)日:2011-12-13

    申请号:US12435040

    申请日:2009-05-04

    IPC分类号: G01V1/30

    CPC分类号: G01V1/30 G01V1/42

    摘要: A method for monitoring a multi-layered system below a surface comprising a slow layer and a fast layer; the method comprising: transmitting one or more seismic waves from one or more seismic sources through the multi-layered system; receiving signals emanating from the multi-layered system in response to the one or more seismic waves with one or more receivers located a distance from the one or more seismic sources; identifying one or more critically refracted compressional (CRC) waves amongst the signals; and inferring information about a change in the slow layer based on the one or more CRC waves; wherein the CRC wave is a refracted wave which has traveled along an interface between the fast layer and an adjacent layer.

    摘要翻译: 一种用于在包括缓慢层和快速层的表面下方监测多层系统的方法; 该方法包括:通过多层系统从一个或多个地震源发射一个或多个地震波; 从所述多层系统接收响应于所述一个或多个地震波与一个或多个接收器位于与所述一个或多个地震源相距一定距离的信号; 识别信号中的一个或多个重要折射压缩(CRC)波; 并且基于所述一个或多个CRC波推断关于所述慢层的改变的信息; 其中所述CRC波是沿所述快速层和相邻层之间的界面行进的折射波。

    Hydraulic fracture monitoring using active seismic sources with receivers in the treatment well
    5.
    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。

    Areal monitoring using distributed acoustic sensing
    8.
    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
    9.
    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。

    SIGNAL STACKING IN FIBER OPTIC DISTRIBUTED ACOUSTIC SENSING
    10.
    发明申请
    SIGNAL STACKING IN FIBER OPTIC DISTRIBUTED ACOUSTIC SENSING 有权
    光纤分布式声学感应信号堆叠

    公开(公告)号:US20130100768A1

    公开(公告)日:2013-04-25

    申请号:US13805679

    申请日:2011-06-22

    IPC分类号: G01V1/48

    CPC分类号: G01V1/48 G01V1/16

    摘要: A method for obtaining information about a subsurface formation from acoustic signals that contain information about the subsurface formation, comprises a) transmitting an optical signal into a fiber optic cable (14) that includes a sensing apparatus (20) comprising a plurality of substantially parallel fiber lengths (24), b) collecting from the sensing apparatus a plurality of received optical signals, each received signal comprising a portion of the transmitted signal that has been reflected from a different segment of a cable length, wherein the different segments are each in different cable lengths and correspond to a single selected location along the sensing cable, and c) processing the collected signals so as to obtain information about an acoustic signal received at the different segments. The cable may be ribbon cable and the lateral distance between the different segments may be less than 10 meters.

    摘要翻译: 一种用于从包含关于地下地层信息的声信号获得关于地下构造的信息的方法,包括:a)将光信号传输到光纤电缆(14)中,所述光纤电缆包括感测装置(20),所述感测装置包括多个基本平行的光纤 长度(24),b)从感测装置收集多个接收到的光信号,每个接收信号包括已经从电缆长度的不同段反射的发射信号的一部分,其中不同的段各自不同 电缆长度并且对应于沿着感测电缆的单个选定位置,以及c)处理所收集的信号,以获得关于在不同段处接收的声信号的信息。 电缆可以是带状电缆,不同部分之间的横向距离可能小于10米。