Downhole species selective optical fiber sensor systems and methods
    1.
    发明授权
    Downhole species selective optical fiber sensor systems and methods 有权
    井下物种选择性光纤传感器系统及方法

    公开(公告)号:US09297767B2

    公开(公告)日:2016-03-29

    申请号:US13253788

    申请日:2011-10-05

    摘要: A downhole optical sensor system includes at least one optical sensor positioned in a borehole and coupled to an interface via a fiber optic cable. Each of the optical sensors includes a waveguide for conducting light, and a reagent region positioned between the waveguide and a fluid in the borehole to absorb a portion of the light from the waveguide, the portion being dependent upon a concentration of a chemical species in the fluid. A method for operating a well includes deploying one or more downhole optical sensors in a fluid flow path in the well, probing the one or more downhole optical sensors from a surface interface to detect concentrations of one or more chemical species, and deriving a rate of scale buildup or corrosion based at least in part on the detected concentrations.

    摘要翻译: 井下光学传感器系统包括位于钻孔中的至少一个光学传感器,并通过光纤电缆耦合到接口。 每个光学传感器包括用于传导光的波导和位于波导与钻孔中的流体之间的试剂区域,以吸收来自波导的一部分光,该部分取决于化学物质的浓度 流体。 用于操作井的方法包括在井的流体流动路径中布置一个或多个井下光学传感器,从表面界面探测一个或多个井下光学传感器以检测一种或多种化学物质的浓度,并得出 至少部分地基于检测到的浓度,形成积垢或腐蚀。

    Controlling well operations based on monitored parameters of cement health
    4.
    发明授权
    Controlling well operations based on monitored parameters of cement health 有权
    基于水泥健康监测参数控制井操作

    公开(公告)号:US08505625B2

    公开(公告)日:2013-08-13

    申请号:US12816749

    申请日:2010-06-16

    IPC分类号: E21B47/12 E21B49/00

    摘要: A method of controlling a well operation can include monitoring at least one parameter of cement lining a wellbore, the monitoring being performed via at least one optical waveguide, and modifying the well operation in response to the parameter being outside of a predetermined acceptable range. A well monitoring system can include at least one optical waveguide which is used to sense at least one parameter of cement lining a wellbore, an optical interrogation system optically connected to the at least one optical waveguide, and a control system which controls operation of at least one item of well equipment in response to information received from the optical interrogation system.

    摘要翻译: 控制井操作的方法可以包括监测衬套在井筒中的水泥的至少一个参数,通过至少一个光波导执行监测,以及响应于参数在预定的可接受范围之外修改井操作。 良好的监测系统可以包括至少一个光波导,其用于感测衬里在井眼中的水泥的至少一个参数,光学询问系统,光学连接到所述至少一个光波导,以及控制系统,其至少控制至少 响应于从光盘询问系统收到的信息,一套井装备件。

    Downhole orientation sensing with nuclear spin gyroscope
    5.
    发明授权
    Downhole orientation sensing with nuclear spin gyroscope 有权
    用核旋转陀螺仪进行井下定向检测

    公开(公告)号:US08278923B2

    公开(公告)日:2012-10-02

    申请号:US12792558

    申请日:2010-06-02

    IPC分类号: G01V3/00

    CPC分类号: E21B47/024

    摘要: Downhole orientation sensing with a nuclear spin gyroscope. A downhole orientation sensing system for use in conjunction with a subterranean well can include a downhole instrument assembly positioned in the well, the instrument assembly including an atomic comagnetometer, and at least one optical waveguide which transmits light between the atomic comagnetometer and a remote location. A method of sensing orientation of an instrument assembly in a subterranean well can include incorporating an atomic comagnetometer into the instrument assembly, and installing the instrument assembly in the well.

    摘要翻译: 使用核旋转陀螺仪进行井下定向检测。 用于与地下井一起使用的井下定向感测系统可以包括定位在井中的井下仪器组件,仪器组件包括原子测光仪,以及至少一个光电波导,其在原子测井仪和远程位置之间透射光。 感测地下井中的仪器组件的取向的方法可以包括将原子测温仪并入仪器组件中,以及将仪器组件安装在井中。

    Distributed temperature sensing in deep water subsea tree completions
    7.
    发明授权
    Distributed temperature sensing in deep water subsea tree completions 有权
    深水海底树分布式温度检测完成

    公开(公告)号:US07938178B2

    公开(公告)日:2011-05-10

    申请号:US11692760

    申请日:2007-03-28

    IPC分类号: E21B41/00 E21B29/12 G01V3/00

    CPC分类号: E21B47/065

    摘要: A deep water subsea tree completion having a distributed temperature sensing system. In a described embodiment, a method of installing an optical fiber in a well includes the steps of: conveying an optical fiber section into the well; and monitoring a light transmission quality of the optical fiber section while the section is being conveyed into the well.

    摘要翻译: 具有分布式温度感测系统的深水海底树完成。 在所描述的实施例中,将光纤安装在井中的方法包括以下步骤:将光纤段输送到井中; 并且在该部分被传送到井中时监视光纤部分的光传输质量。

    Method and system for providing a hydrogen diffusion barrier for fiber optic cables used in hostile environments
    8.
    发明授权
    Method and system for providing a hydrogen diffusion barrier for fiber optic cables used in hostile environments 有权
    为恶劣环境中使用的光纤电缆提供氢扩散阻挡层的方法和系统

    公开(公告)号:US07218820B2

    公开(公告)日:2007-05-15

    申请号:US11107675

    申请日:2005-04-14

    IPC分类号: G02B6/44

    CPC分类号: G02B6/4492 G02B6/4427

    摘要: A fiber optic conduit for use in a hostile environment includes a hydrogen barrier shell that is disposed outwardly from an inner axial tube. The hydrogen barrier shell comprises a material that is capable of reducing hydrogen permeation through the fiber optic conduit and a thickness of at least approximately one-thousandth of an inch. The inner axial tube is operable to receive one or more optical fibers. The conduit further includes an outer axial tube that is disposed outwardly from the hydrogen barrier shell and is operable to form a hydrostatic pressure boundary for the fiber optic conduit.

    摘要翻译: 用于恶劣环境的光纤导管包括从内部轴向管外侧设置的氢气阻挡壳。 氢阻挡壳包括能够减少通过光纤导管的氢渗透和至少约千分之一英寸的厚度的材料。 内轴管可操作以接收一根或多根光纤。 导管还包括外部轴向管,其从氢阻挡壳向外设置并且可操作以形成用于光纤导管的静水压力边界。

    Seismic sensor array with electrical to optical transformers
    9.
    发明授权
    Seismic sensor array with electrical to optical transformers 有权
    地震传感器阵列,带有电光变压器

    公开(公告)号:US06256588B1

    公开(公告)日:2001-07-03

    申请号:US09330584

    申请日:1999-06-11

    IPC分类号: G01V128

    CPC分类号: G01V1/22 H04B11/00

    摘要: A seismic sensor array includes a means for passive electrical to optical energy transformation and transmission. This transformation is used remotely with traditional sensor arrays, which may include hydrophones, geophones, or a combination of them. The transformation means is used to develop an optical signal in a fiber which then conveys the seismic signals to a recording center or data accumulator.

    摘要翻译: 地震传感器阵列包括用于无源电到光能转换和传输的装置。 这种转换与传统的传感器阵列远程使用,传感器阵列可能包括水听器,地震检波器或它们的组合。 变换装置用于开发光纤中的光信号,然后将光信号传送到记录中心或数据存储器。