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    MID-INFRARED CARBON DIOXIDE SENSOR
    3.
    发明申请
    MID-INFRARED CARBON DIOXIDE SENSOR 有权

    公开(公告)号：US20210165123A1

    公开(公告)日：2021-06-03

    申请号：US17147099

    申请日：2021-01-12

    Applicant: Schlumberger Technology Corporation

    Inventor： Go Fujisawa ,  Sheng Chao ,  Timothy Jones ,  Nathan Lawrence ,  Rolf Rustad ,  Li Jiang ,  Steven Gahlings

    IPC: G01V8/10 ,  G01N21/3504 ,  G01N33/00 ,  G01N21/3577 ,  G01N21/552 ,  E21B49/08 ,  G01N21/15

    Abstract: A sensor for monitoring CO2 in a fluid regardless of the phase properties of the fluid, i.e., regardless of whether the fluid contacting the window is a liquid water-based phase, a liquid oil-based phase, a mixture of liquid water and liquid oil-based phases, or a gas phase. The sensor includes an internal reflection window for contacting with the fluid. A mid-infrared light source directs a beam of mid-infrared radiation into the window and the beam is internal reflected at an interface between the window and the fluid. The reflected beam is passed through three narrow bandpass filters which preferentially transmit mid-infrared radiation over bands of wavelengths corresponding to absorbance peaks of water, oil and CO2. The amount of CO2 is determined from the intensities of the mid-infrared radiation passing through the three filters.

    MID-INFRARED SENSOR
    4.
    发明申请
    MID-INFRARED SENSOR 审中-公开

    公开(公告)号：US20200165916A1

    公开(公告)日：2020-05-28

    申请号：US16695671

    申请日：2019-11-26

    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

    Inventor： Timothy Jones ,  Nathan Lawrence ,  Go Fujisawa ,  Sheng Chao ,  Rolf Rustad

    IPC: E21B47/12 ,  G01N21/552 ,  E21B47/06 ,  E21B47/00 ,  G01N33/24

    Abstract: A sensor for monitoring a species which is a component of a fluid. The sensor includes an internal reflection window which, in use, is in direct contact with the fluid. The sensor further includes a mid-infrared light source which directs a beam of mid-infrared radiation into said window for attenuated internal reflection at an interface between the window and the fluid. The sensor further includes a first narrow bandpass filter which preferentially transmits mid-infrared radiation over a band of wavelengths corresponding to an absorbance peak of the species. The sensor further includes an infrared detector which detects filtered mid-infrared radiation transmitted through the first filter and a processor for measuring the intensity of the detected mid-infrared radiation transmitted through the first filter, and determines therefrom an amount of the species in the fluid.

    Mid-infrared carbon dioxide sensor
    7.
    发明授权
    Mid-infrared carbon dioxide sensor 有权

    公开(公告)号：US11221431B2

    公开(公告)日：2022-01-11

    申请号：US17147099

    申请日：2021-01-12

    Applicant: Schlumberger Technology Corporation

    Inventor： Go Fujisawa ,  Sheng Chao ,  Timothy Jones ,  Nathan Lawrence ,  Rolf Rustad ,  Li Jiang ,  Steven Gahlings

    IPC: G01V8/10 ,  G01N21/3504 ,  G01N33/00 ,  G01N21/3577 ,  G01N21/552 ,  E21B49/08 ,  G01N21/15

    Abstract: A sensor for monitoring CO2 in a fluid regardless of the phase properties of the fluid, i.e., regardless of whether the fluid contacting the window is a liquid water-based phase, a liquid oil-based phase, a mixture of liquid water and liquid oil-based phases, or a gas phase. The sensor includes an internal reflection window for contacting with the fluid. A mid-infrared light source directs a beam of mid-infrared radiation into the window and the beam is internal reflected at an interface between the window and the fluid. The reflected beam is passed through three narrow bandpass filters which preferentially transmit mid-infrared radiation over bands of wavelengths corresponding to absorbance peaks of water, oil and CO2. The amount of CO2 is determined from the intensities of the mid-infrared radiation passing through the three filters.

    Mid-infrared carbon dioxide sensor
    8.
    发明授权
    Mid-infrared carbon dioxide sensor 有权

    公开(公告)号：US10921482B2

    公开(公告)日：2021-02-16

    申请号：US15511164

    申请日：2015-09-09

    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

    Inventor： Go Fujisawa ,  Sheng Chao ,  Timothy Jones ,  Nathan Lawrence ,  Rolf Rustad ,  Li Jiang ,  Steven Gahlings

    IPC: G01V8/10 ,  G01N21/3504 ,  G01N33/00 ,  G01N21/3577 ,  G01N21/552 ,  E21B49/08 ,  G01N21/15

    Abstract: A sensor for monitoring CO2 in a fluid regardless of the phase properties of the fluid, i.e., regardless of whether the fluid contacting the window is a liquid water-based phase, a liquid oil-based phase, a mixture of liquid water and liquid oil-based phases, or a gas phase. The sensor includes an internal reflection window for contacting with the fluid. A mid-infrared light source directs a beam of mid-infrared radiation into the window and the beam is internal reflected at an interface between the window and the fluid. The reflected beam is passed through three narrow bandpass filters which preferentially transmit mid-infrared radiation over bands of wavelengths corresponding to absorbance peaks of water, oil and CO2. The amount of CO2 is determined from the intensities of the mid-infrared radiation passing through the three filters

    PRE-STRESSED GAMMA DENSITOMETER WINDOW AND METHOD OF FABRICATION
    9.
    发明申请
    PRE-STRESSED GAMMA DENSITOMETER WINDOW AND METHOD OF FABRICATION 审中-公开
    预应力GAMMA密度计窗口和制造方法

    公开(公告)号：US20170010225A1

    公开(公告)日：2017-01-12

    申请号：US15274256

    申请日：2016-09-23

    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

    Inventor： Rolf Rustad ,  Paal Bratland ,  Jean-Francois Noel

    IPC: G01N23/12 ,  G01N23/083 ,  G01F1/74

    CPC classification number: G01N23/12 ,  G01F1/74 ,  G01N23/083 ,  G01N2223/04 ,  G01N2223/317 ,  H01P1/08 ,  Y10T29/49865

    Abstract: A gamma densitometer window is provided along with a method of fabrication thereof. The window comprises a plate of non-metallic, preferably gamma transparent, material having a first face and a second face opposing one another and having an outer edge defined therebetween. The window further comprises a metallic frame member fitted around the outer edge of the plate and adapted to pre-load the plate with a compressive stress that is sufficiently high such that the sum of the compressive stress, tensile stress and shear stress components generated in the plate under high-pressure conditions is always compressive. The method of fabrication shrink fitting the metallic frame member around the outer edge of the plate at a shrink-fit temperature such that the metallic frame member applies a compressive stress to the plate at any temperature below the shrink-fit temperature.

    Abstract translation: 提供伽马密度计窗口及其制造方法。 窗口包括非金属，优选γ透明材料的板，其具有第一面和彼此相对的第二面，并且在其间限定有外边缘。 窗户还包括金属框架构件，该金属框架构件围绕板的外边缘安装并且适于以足够高的压缩应力预加载板，使得压缩应力，拉伸应力和剪切应力分量之和在 板材在高压条件下总是压缩的。 制造方法以收缩配合温度使金属框架构件围绕板的外边缘收缩，使得金属框架构件在低于收缩配合温度的任何温度下向板施加压缩应力。

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