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    MID-INFRARED CARBON DIOXIDE SENSOR
    11.
    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.

    Compositions and methods for treating subterranean formations
    13.
    发明授权
    Compositions and methods for treating subterranean formations 有权

    公开(公告)号：US10253249B2

    公开(公告)日：2019-04-09

    申请号：US14449961

    申请日：2014-08-01

    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

    Inventor： Li Jiang ,  Bruno Lecerf ,  Connor Coley ,  Philip Sullivan ,  Brent Busby ,  Jeremy Bedard

    IPC: E21B43/28 ,  C09K8/72 ,  C09K8/74

    Abstract: Methods for treating subterranean wells in which the producing formation is a carbonate comprise preparing a treatment fluid comprising either: (a) an aqueous solution of a multivalent-cation reacting polymer; (b) a solution comprising a fatty acid and an ethanolamine; (c) an aqueous acidic solution of one or more compounds whose calcium salts are insoluble; or (d) an aqueous solution comprising urea or alkane derivatives thereof or both and polyvinylpyrrolidone (PVP). The treatment fluid is placed in the well such that the solution contacts the carbonate formation at a pressure lower than the fracturing pressure. The treatment fluid is allowed to react with the carbonate formation, thereby depositing a film onto the formation surface or part of the formation surface. Then an acid solution is placed in the well such that the acid contacts the carbonate formation at a pressure lower than the fracturing pressure.

    AQUEOUS SOLUTION AND METHOD FOR USE THEREOF
    17.
    发明申请
    AQUEOUS SOLUTION AND METHOD FOR USE THEREOF 审中-公开
    水溶液及其使用方法

    公开(公告)号：US20150034318A1

    公开(公告)日：2015-02-05

    申请号：US13955468

    申请日：2013-07-31

    Applicant: Schlumberger Technology Corporation

    Inventor： Li Jiang ,  Timothy G.J. Jones ,  Rick Hutchins ,  Bruno Lecerf ,  Murtaza Ziauddin ,  Jian He

    IPC: C09K8/00 ,  E21B43/25

    CPC classification number: E21B43/25 ,  C09K8/04 ,  C09K8/74 ,  E21B21/062

    Abstract: A method of treating a formation includes preparing an aqueous solution having HCl in an amount between greater than 15% and 45.7% by weight, inclusive. The prepared aqueous solution includes a fixing agent (FA) present in a molar ratio of FA:HCl between 0.15 and 2.5 inclusive, where the FA is urea and/or a urea derivative, and further includes water present in an amount sufficient to dissolve the HCl and the FA. The aqueous solution includes substantially no polysaccharides.The method further includes providing an oilfield treatment fluid including the aqueous solution to a high pressure pump operating the high pressure pump to treat a wellbore and/or the formation fluidly coupled to the wellbore.

    Abstract translation: 处理地层的方法包括制备具有大于15重量％至45.7重量％（含）重量的HCl的水溶液。 所制备的水溶液包括以FA：HCl的摩尔比在0.15和2.5之间（其中FA为尿素和/或尿素衍生物）存在的固定剂（FA），并且还包括以足以溶解 HCl和FA。 水溶液基本上不含多糖。 该方法还包括向包含高压泵的高压泵提供包括该水溶液的油田处理流体，以处理井筒和/或流体耦合到井筒的地层。

    Mid-infrared carbon dioxide sensor
    18.
    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
    19.
    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

    Mid-infrared acid sensor
    20.
    发明授权
    Mid-infrared acid sensor 有权

    公开(公告)号：US10345480B2

    公开(公告)日：2019-07-09

    申请号：US15511336

    申请日：2015-09-09

    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

    Inventor： Timothy Jones ,  Nathan Lawrence ,  Go Fujisawa ,  Sheng Chao ,  Li Jiang

    IPC: G01V8/14 ,  G01N21/3577 ,  G01N21/552 ,  E21B49/08 ,  G01N21/15 ,  G01N21/3504 ,  G01N33/00

    Abstract: A sensor is provided for monitoring a mineral acid dissolved in a liquid. The sensor includes an internal reflection window which, in use, is in direct contact with the liquid. 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 liquid. 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 dissolved mineral acid to filter internally reflected mid-infrared radiation received from the window. The sensor further includes an infrared detector which detects filtered mid-infrared radiation transmitted through the first filter. The sensor further includes a processor arrangement, operably coupled to the infrared detector, which measures the intensity of the detected mid-infrared radiation transmitted through the first filter, and determines therefrom an amount of the mineral acid dissolved in the liquid.

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