Methods and apparatus for electro-optical hybrid telemetry
    5.
    发明申请
    Methods and apparatus for electro-optical hybrid telemetry 审中-公开
    电光混合遥测方法与装置

    公开(公告)号:US20060152383A1

    公开(公告)日:2006-07-13

    申请号:US11023956

    申请日:2004-12-28

    IPC分类号: G01V3/00

    CPC分类号: E21B47/123 H04B10/2587

    摘要: Hybrid electrical-optical telemetry systems and methods are disclosed. The methods and systems facilitate faster data transmission rates between the surface and downhole tools and sensors. The methods and systems may also include a downhole electrical bus for inter-tool and intra-tool communication to facilitate limited changes to existing downhole equipment. Some embodiments of the hybrid electrical-optical telemetry system include a light source at the surface and a downhole modulator. Some embodiments also include redundant, selectable optical systems. The methods and systems may operate via a single optical input/output cable.

    摘要翻译: 公开了混合电光遥测系统和方法。 这些方法和系统有助于在表面和井下工具和传感器之间实现更快的数据传输速率。 这些方法和系统还可以包括用于工具间和工具内通信的井下电气总线,以便有限地改变现有的井下设备。 混合电光学遥测系统的一些实施例包括表面处的光源和井下调制器。 一些实施例还包括冗余的可选光学系统。 方法和系统可以通过单个光输入/输出电缆进行操作。

    Methods and apparatus for decreasing a density of a downhole fluid
    6.
    发明授权
    Methods and apparatus for decreasing a density of a downhole fluid 有权
    降低井下流体密度的方法和装置

    公开(公告)号:US08082780B2

    公开(公告)日:2011-12-27

    申请号:US12200916

    申请日:2008-08-28

    IPC分类号: E21B49/08

    摘要: Methods and apparatus for decreasing a density of a downhole fluid are described. An example apparatus to analyze a downhole fluid includes a chamber to decrease a density of at least a portion of a sample of a downhole fluid. Additionally, the example apparatus includes a sensor to measure a pressure of at least the portion of the sample in the chamber. Further, the example apparatus includes a fluid measurement unit to measure a characteristic of at least the portion of the sample based on a relationship between the pressure of at least the portion of the sample in the chamber and a predetermined pressure. Further yet, the example apparatus includes a control unit to determine a parameter of the downhole fluid based on the characteristic.

    摘要翻译: 描述了降低井下流体密度的方法和装置。 用于分析井下流体的示例性装置包括用于降低井下流体的样品的至少一部分的密度的室。 另外,该示例性装置包括用于测量室中至少部分样品的压力的传感器。 此外,该示例性装置包括:流体测量单元,用于基于室中的至少部分样品的压力与预定压力之间的关系来测量至少部分样品的特性。 此外,示例性装置包括基于该特性来确定井下流体的参数的控制单元。

    Method and apparatus for downhole spectral analysis of fluids
    10.
    发明授权
    Method and apparatus for downhole spectral analysis of fluids 有权
    液体井下光谱分析方法和装置

    公开(公告)号:US07336356B2

    公开(公告)日:2008-02-26

    申请号:US11307170

    申请日:2006-01-26

    IPC分类号: G01J3/28 G01N21/00 G01V5/08

    摘要: A downhole fluid analysis system comprises an input light signal that is directed through a fluid sample housed in a sample cell. The input light signal may originate from a plurality of light sources. A light signal output from the sample cell is then routed to two or more spectrometers for measurement of the represented wavelengths in the output light signal. The output of the spectrometers is then compared to known values for hydrocarbons typically encountered downhole. This provides insight into the composition of the sample fluid. Additionally, the input light can be routed directly to the two or more spectrometers to be used in calibration of the system in the high temperature and noise environment downhole.

    摘要翻译: 井下流体分析系统包括被引导通过容纳在样品池中的流体样品的输入光信号。 输入光信号可以来自多个光源。 然后将从样品池输出的光信号路由到两个或更多个光谱仪,以测量输出光信号中所表示的波长。 然后将光谱仪的输出与通常在井下遇到的烃的已知值进行比较。 这提供了对样品流体的组成的了解。 此外,输入光可以直接路由到两个或更多个光谱仪,以在井下的高温和噪声环境中校准系统。