公开(公告)号：US20170242149A1

公开(公告)日：2017-08-24

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 ,  E21B49/08 ,  G01N33/00 ,  G01N21/15 ,  G01N21/3504 ,  G01N21/3577

CPC classification number: G01V8/10 ,  E21B49/08 ,  E21B2049/085 ,  G01N21/15 ,  G01N21/3504 ,  G01N21/3577 ,  G01N21/552 ,  G01N33/004 ,  G01N2021/152 ,  G01N2021/154 ,  G01N2201/068 ,  G01N2201/0696 ,  G01N2201/12 ,  Y02A50/244

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

公开(公告)号：US20180320508A1

公开(公告)日：2018-11-08

申请号：US15511333

申请日：2015-09-09

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

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

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

CPC classification number: E21B47/123 ,  E21B47/0002 ,  E21B47/0003 ,  E21B47/065 ,  G01N21/552 ,  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 trans mined through the first filter, and determines therefrom an amount of the species in the fluid.

公开(公告)号：US20180231684A1

公开(公告)日：2018-08-16

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 ,  G01N21/15 ,  G01N21/3504 ,  G01N33/00 ,  E21B49/08

CPC classification number: G01V8/14 ,  E21B49/08 ,  E21B2049/085 ,  G01N21/15 ,  G01N21/3504 ,  G01N21/3577 ,  G01N21/552 ,  G01N33/004 ,  G01N2021/154 ,  G01N2201/0696 ,  G01N2201/12 ,  Y02A50/244

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.

公开(公告)号：US20250067668A1

公开(公告)日：2025-02-27

申请号：US18724320

申请日：2023-04-05

Applicant: Schlumberger Technology Corporation

Inventor： Timothy Gareth John Jones ,  Debora Campos de Faria ,  Nathan Lawrence ,  Go Fujisawa ,  Jaroslaw Pulka ,  Sheng Chao

IPC: G01N21/552 ,  G01N21/35 ,  G01N21/43

Abstract: An apparatus and a method are used for measuring a sample. The apparatus includes a crystal having at least one face in direct contact with the sample, at least one light source emitting and directing at least a first light beam and a second light beam into the same crystal such that the first light beam and the second light beam are totally internally reflected at the interface between the crystal and the sample, and at least one detector detecting the first light beam and the second light beam which have been totally internally reflected at the interface. The first light beam travels along a first optical path in the crystal and the second light beam travels along a second optical path in the crystal, and the first optical path is different from the second optical path in optical property.

公开(公告)号：US10539500B2

公开(公告)日：2020-01-21

申请号：US15511437

申请日：2015-09-09

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Timothy Jones ,  Nathan Lawrence ,  Go Fujisawa ,  Sheng Chao ,  Steven Gahlings

IPC: B08B7/00 ,  G02B1/02 ,  G01N21/15 ,  G01N21/35 ,  G01N21/3577 ,  G02B27/00 ,  G01N21/31 ,  G01N21/552 ,  G01N33/28 ,  G01N21/3504 ,  G02B5/28

Abstract: An integrated approach for cleaning an active surface of a petrochemical sensor. Sensors in the petrochemical industry are often deployed in locations where they are prone to fouling. By heating the active surface fouling substances may be removed from the active surface. Heating the surface above a supercritical point of a fluid being sensed may create a fluid that may serve to clean the active surface. Limiting the duration of the applied heating and/or pulsing the heating may mitigate adverse effects of use of high temperatures. A doped active surface, such as a doped diamond window may be designed to have conductive areas in the window that may be used for resistive heating of the window.

公开(公告)号：US20170242151A1

公开(公告)日：2017-08-24

申请号：US15510249

申请日：2015-09-09

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

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

IPC: G01V8/14 ,  E21B49/08

CPC classification number: G01V8/14 ,  E21B49/08 ,  E21B2049/085 ,  G01N21/3577 ,  G01N21/359 ,  G01N21/552 ,  G01N2021/3595 ,  G01N2201/068

Abstract: A sensor for monitoring a hydrate inhibitor dissolved in a liquid. The sensor includes an internal reflection window for contacting with the liquid. The sensor further includes a mid-infrared light source for directs a beam of mid-infrared radiation into the window to provide for attenuated internal reflection at an interface between the window and the liquid. The internally reflected mid-infrared beam is passed through a narrow bandpass filter which preferentially transmits mid-infrared radiation over a band of wavelengths corresponding to an absorbance peak of the dissolved hydrate inhibitor to filter internally reflected mid-infrared radiation received from the window. The intensity of the reflected mid-infrared beam transmitted through the filter is measured and used to determine an amount of hydrate inhibitor ion the liquid.

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.

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

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.

公开(公告)号：US20170242150A1

公开(公告)日：2017-08-24

申请号：US15511343

申请日：2015-09-11

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Timothy Jones ,  Nathan Lawrence ,  Go Fujisawa

IPC: G01V8/10 ,  E21B47/00

CPC classification number: G01V8/10 ,  E21B47/0005 ,  E21B47/123 ,  E21B2049/085 ,  G01N21/3563 ,  G01N33/383 ,  G01N2201/068

Abstract: A sensor is provided for monitoring cement. An internal reflection is contacted with the cement and a mid-infrared light source directs a beam of mid-infrared radiation into said window for attenuated internal reflection at an interface between the window and the cement. The reflected infrared radiation is passed through a first narrow bandpass filter that preferentially transmits mid-infrared radiation over a band of wavelengths corresponding to an absorbance peak of a species associated with the cement to filter internally reflected mid-infrared radiation received from the window. An infrared detector detects filtered mid-infrared radiation transmitted through the first filter and a processor measures the intensity of the detected mid-infrared radiation transmitted through the first filter, and determines therefrom an amount of the species associated with the cement.