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：US10451784B2

公开(公告)日：2019-10-22

申请号：US15511491

申请日：2015-09-09

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION ,  READING UNIVERSITY

Inventor： Timothy Jones ,  Nathan Lawrence ,  Gary Hawkins ,  Richard Sherwood ,  Karim Djotni

IPC: G02B5/28 ,  G01N33/28 ,  G01J3/02

Abstract: A narrow bandpass filter that may be used in a mid-infrared sensor for monitoring a species, which may be a component of a fluid or a solid material. The filter comprises a cavity comprising a low refractive index material. By providing a high ratio of low refractive index material in the filter with respective to high refractive index material, the filter is configured so that wavelength transmission remains constant with varying temperature. Materials used for the low and/or high refractive index provide a temperature invariant filter that transmits mid-infrared spectra without serious degradation.

公开(公告)号：US10407379B2

公开(公告)日：2019-09-10

申请号：US14665832

申请日：2015-03-23

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Fenglou Zou ,  Nathan Lawrence ,  Timothy Jones

IPC: B82Y30/00 ,  B82Y40/00 ,  C01B32/20 ,  C01B32/21 ,  C01B32/28 ,  G01N27/30 ,  C01B32/156 ,  C01B32/174 ,  C01B32/194 ,  C01B32/354 ,  C07C201/12 ,  C01B31/02 ,  C01B31/04

Abstract: A molecular species is covalently attached to elemental carbon by exposing the carbon to a reaction mixture containing a strong base and a compound of the formula or in which X denotes a covalently attached atom or group capable of forming an X− anion and each Z is a moiety comprising a plurality of atoms, but which does not have a hydrogen atom directly attached to the atom which itself is directly attached to the —CH2X or —CHX group. The carbon substrate may be graphite or carbon nanotubes.

公开(公告)号：US20190267626A1

公开(公告)日：2019-08-29

申请号：US16408503

申请日：2019-05-10

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Hanpu Liang ,  Nathan Lawrence ,  Timothy Jones ,  Steven Gahlings ,  Christine Jarvis ,  Wen Rong Li ,  Rogerio Tadeu Ramos ,  Vladimir Hernandez Solis

IPC: H01M4/583 ,  H01M4/08 ,  C01B32/10 ,  H01M6/14 ,  H01M4/38

Abstract: A Li/CFx primary battery having a lithium-based anode and a fluorinated carbon cathode. The fluorinated carbon cathode includes fluorinated carbon nanoparticles. The structure and size distribution of the carbon precursor carbon nanotubes are configured to provide improved battery performance. The fluorinated carbon nanoparticles can be formed by fluorinating carbon nanoparticles using a fluorine-based reactive gas at a temperature in the range from 300 to 600° C., and the fluorinated carbon nanoparticles can further be used to form the cathode of the primary battery. Producing the Li/CFx primary batter can also include heating the fluorinated carbon nanoparticles under an inert atmosphere before the fluorinated carbon nanoparticles are used to form the cathode of the primary battery.

公开(公告)号：US20160133932A1

公开(公告)日：2016-05-12

申请号：US14935043

申请日：2015-11-06

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Hanpu Liang ,  Nathan Lawrence ,  Timothy Jones ,  Steven Gahlings ,  Christine Jarvis ,  Wen Rong Li ,  Rogerio Tadeu Ramos ,  Vladimir Hernandez Solis

IPC: H01M4/583 ,  H01M4/38 ,  H01M4/08 ,  H01M4/06

CPC classification number: H01M4/5835 ,  C01B32/10 ,  C01P2004/12 ,  C01P2004/62 ,  H01M4/08 ,  H01M4/382 ,  H01M6/14 ,  H01M2004/021 ,  H01M2004/028

Abstract: A Li/CFx primary battery having a lithium-based anode and a fluorinated carbon cathode. The fluorinated carbon cathode includes fluorinated carbon nanoparticles. The structure and size distribution of the carbon precursor carbon nanotubes are configured to provide improved battery performance.

Abstract translation: 具有锂基阳极和氟化碳阴极的Li / CFx一次电池。 氟化碳阴极包括氟化碳纳米颗粒。 碳前体碳纳米管的结构和尺寸分布被配置成提供改进的电池性能。

公开(公告)号：US20140332411A1

公开(公告)日：2014-11-13

申请号：US14365625

申请日：2012-12-24

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Nathan Lawrence ,  Andrew Meredith

IPC: G01N27/30

CPC classification number: G01N27/302

Abstract: A method of determining the pH of an aqueous liquid which contains little or no buffer, such as does not contain more than 0.01 moles per litre of pH-buffering partially dissociated acid, base and/or salt, uses an electrode with at least one redox active compound immobilized thereon convertible electrochemically between reduced and oxidized forms with transfer of at least one proton between the compound and the aqueous liquid. Varying potential is applied to the electrode, observing current flow as potential is varied, determining the applied potential at a maximum current for redox reaction of the compound, and determining pH from the potential at maximum current. The electrode has a covering layer which separates the redox active compound from the aqueous liquid but selectively allows the passage of hydrogen ions between the redox active compound and the aqueous liquid. The presence of the covering layer enhances accuracy of the measurement of pH of the aqueous liquid.

Abstract translation: 确定含有很少或没有缓冲液的水性液体的pH值的方法，例如不超过0.01摩尔每升pH缓冲部分解离的酸，碱和/或盐，使用具有至少一种氧化还原电极 固定在其上的活性化合物在还原和氧化形式之间电化学转化，同时在化合物和含水液体之间转移至少一个质子。 对电极施加不同的电位，随着电位的变化观察电流，确定化合物的氧化还原反应的最大电流下的施加电位，并从最大电流的电位测定pH。 电极具有将氧化还原活性化合物与水性液体分离的覆盖层，但是选择性地允许氢氧离子在氧化还原活性化合物和含水液体之间通过。 覆盖层的存在提高了水性液体的pH的测量的准确性。

公开(公告)号：US10944109B2

公开(公告)日：2021-03-09

申请号：US16408503

申请日：2019-05-10

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Hanpu Liang ,  Nathan Lawrence ,  Timothy Jones ,  Steven Gahlings ,  Christine Jarvis ,  Wen Rong Li ,  Rogerio Tadeu Ramos ,  Vladimir Hernandez Solis

IPC: H01M4/58 ,  H01M4/583 ,  H01M4/38 ,  H01M4/08 ,  C01B32/10 ,  H01M6/14 ,  H01M4/02

Abstract: A Li/CFx primary battery having a lithium-based anode and a fluorinated carbon cathode. The fluorinated carbon cathode includes fluorinated carbon nanoparticles. The structure and size distribution of the carbon precursor carbon nanotubes are configured to provide improved battery performance. The fluorinated carbon nanoparticles can be formed by fluorinating carbon nanoparticles using a fluorine-based reactive gas at a temperature in the range from 300 to 600° C., and the fluorinated carbon nanoparticles can further be used to form the cathode of the primary battery. Producing the Li/CFx primary batter can also include heating the fluorinated carbon nanoparticles under an inert atmosphere before the fluorinated carbon nanoparticles are used to form the cathode of the primary battery.

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.