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    Electrochemical hydrogen sensor
    12.
    发明授权
    Electrochemical hydrogen sensor 有权

    公开(公告)号：US11333625B2

    公开(公告)日：2022-05-17

    申请号：US16871735

    申请日：2020-05-11

    Applicant: Schlumberger Technology Corporation

    Inventor： Timothy Jones ,  Debbie S. Silvester ,  Li Jiang ,  Hanpu Liang ,  Nathan Lawrence ,  Richard Compton

    IPC: G01N27/404 ,  B01J19/24 ,  E21B49/08 ,  G01N27/30 ,  G01N27/40 ,  G01N27/416 ,  G01N27/49 ,  H01M8/0438 ,  H01M8/1018 ,  G01N33/00 ,  H01M8/10

    Abstract: A process for determining a content of hydrogen in a fluid medium includes contacting the fluid medium with a sensor. The sensor has a housing enclosing a chamber containing an ionic liquid electrolyte, a window which is permeable to hydrogen and positioned in an opening in the housing, and electrodes in contact with the ionic liquid electrolyte in the chamber. Hydrogen is allowed to pass through the window from the fluid medium into the electrolyte and the sensor is heated. Temperature and pressure of the fluid medium is determined and electrical potential is applied to the electrodes. The method also includes measuring current flow. The sensor can be used to observe hydrogen concentration by voltammetry. The method and sensor may be used for measuring downhole hydrogen content, monitoring fiber-optic cables for damage by hydrogen, corrosion monitoring, and in small-scale process plants where hydrogen is part of a gas stream.

    ELECTROCHEMICAL HYDROGEN SENSOR
    13.
    发明申请
    ELECTROCHEMICAL HYDROGEN SENSOR 审中-公开

    公开(公告)号：US20200271617A1

    公开(公告)日：2020-08-27

    申请号：US16871735

    申请日：2020-05-11

    Applicant: Schlumberger Technology Corporation

    Inventor： Timothy Jones ,  Debbie S. Silvester ,  Li Jiang ,  Hanpu Liang ,  Nathan Lawrence ,  Richard Compton

    IPC: G01N27/404 ,  B01J19/24 ,  E21B49/08 ,  G01N27/30 ,  G01N27/40 ,  G01N27/416 ,  G01N27/49 ,  H01M8/0438 ,  H01M8/1018

    Abstract: A process for determining a content of hydrogen in a fluid medium includes contacting the fluid medium with a sensor. The sensor has a housing enclosing a chamber containing an ionic liquid electrolyte, a window which is permeable to hydrogen and positioned in an opening in the housing, and electrodes in contact with the ionic liquid electrolyte in the chamber. Hydrogen is allowed to pass through the window from the fluid medium into the electrolyte and the sensor is heated. Temperature and pressure of the fluid medium is determined and electrical potential is applied to the electrodes. The method also includes measuring current flow. The sensor can be used to observe hydrogen concentration by voltammetry. The method and sensor may be used for measuring downhole hydrogen content, monitoring fiber-optic cables for damage by hydrogen, corrosion monitoring, and in small-scale process plants where hydrogen is part of a gas stream.

    Derivatization of carbon
    14.
    发明授权
    Derivatization of carbon 有权

    公开(公告)号：US10099927B2

    公开(公告)日：2018-10-16

    申请号：US14365591

    申请日：2012-12-21

    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

    Inventor： Lynne Crawford ,  Nathan Lawrence ,  Timothy Jones

    IPC: C01B31/02 ,  C01B31/04 ,  G01N27/30 ,  G01N27/48 ,  B82Y30/00 ,  B82Y40/00

    Abstract: A process for derivatization of an elemental carbon surface comprising exposing the carbon surface to a reaction mixture containing a thiol and a free radical initiator, and inducing decomposition of the initiator to free radicals so that moieties from the thiol become covalently attached to the carbon surface. The process can derivatize carbon with a redox active compound having a functional group which can be converted electrochemically between reduced and oxidized forms. Such derivatized carbon may be used in an electrode of an electrochemical sensor.

    DERIVATIZATION OF CARBON
    16.
    发明申请
    DERIVATIZATION OF CARBON 审中-公开
    碳的衍生物

    公开(公告)号：US20140353175A1

    公开(公告)日：2014-12-04

    申请号：US14365591

    申请日：2012-12-21

    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

    Inventor： Lynne Crawford ,  Nathan Lawrence ,  Timothy Jones

    IPC: C01B31/02 ,  G01N27/30 ,  C01B31/04

    CPC classification number: C01B31/02 ,  B82Y30/00 ,  B82Y40/00 ,  C01B31/0273 ,  C01B31/04 ,  C01B31/0484 ,  C01B32/05 ,  C01B32/174 ,  C01B32/194 ,  C01B32/20 ,  G01N27/302 ,  G01N27/308 ,  G01N27/48

    Abstract: A process for derivatization of an elemental carbon surface comprising exposing the carbon surface to a reaction mixture containing a thiol and a free radical initiator, and inducing decomposition of the initiator to free radicals so that moieties from the thiol become covalently attached to the carbon surface. The process can derivatize carbon with a redox active compound having a functional group which can be converted electrochemically between reduced and oxidized forms. Such derivatized carbon may be used in an electrode of an electrochemical sensor.

    Abstract translation: 包括将碳表面暴露于含有硫醇和自由基引发剂的反应混合物，并引发引发剂分解成自由基的方法，使得来自硫醇的部分共价连接到碳表面。 该方法可以用具有官能团的氧化还原活性化合物衍生碳，其可以在还原和氧化形式之间电化学转化。 这种衍生的碳可以用在电化学传感器的电极中。

    DERIVATIZATION OF CARBON
    17.
    发明申请
    DERIVATIZATION OF CARBON 有权
    碳的衍生物

    公开(公告)号：US20140332413A1

    公开(公告)日：2014-11-13

    申请号：US14365945

    申请日：2012-12-21

    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

    Inventor： Lynne Crawford ,  Nathan Lawrence ,  Timothy Jones

    IPC: C07C201/12 ,  G01N27/30

    CPC classification number: C07C201/12 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/174 ,  C01B32/194 ,  C01B32/20 ,  G01N27/302 ,  G01N27/308 ,  H01G11/32 ,  H01M4/583 ,  H01M4/96 ,  Y02E60/13

    Abstract: Derivatization of an elemental carbon surface is accomplished by exposing the carbon surface to an aprotic solvent containing a hydrazone molecule of formula (I) or the corresponding salt of formula (II) wherein R1 is an organic group, and R2 is an organic group or hydrogen and decomposing the hydrazone in the presence of elemental carbon to create a carbene moiety of formula (III): which attaches to the carbon surface. The attached groups may be redox active so that the derivatized carbon may be used in an electrochemical sensor.

    Abstract translation: 元素碳表面的衍生是通过将碳表面暴露于含有式（I）的腙分子或其相应的式（II）的盐的非质子溶剂，其中R1是有机基团，R2是有机基团或氢 并在元素碳的存在下分解腙以产生连接到碳表面的式（III）的卡宾部分。 所连接的基团可以是氧化还原活性的，使得衍生的碳可以用在电化学传感器中。

    MID-INFRARED CARBON DIOXIDE SENSOR
    18.
    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
    19.
    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.

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