公开(公告)号：US20180321428A1

公开(公告)日：2018-11-08

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

CPC classification number: G02B5/285 ,  G01J3/02 ,  G01N33/2823 ,  G02B5/281

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：US20150197481A1

公开(公告)日：2015-07-16

申请号：US14665832

申请日：2015-03-23

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Fenglou Zou ,  Nathan Lawrence ,  Timothy Jones

IPC: C07C201/12

CPC classification number: C07C201/12 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/156 ,  C01B32/174 ,  C01B32/194 ,  C01B32/20 ,  C01B32/21 ,  C01B32/28 ,  C01B32/354 ,  G01N27/308

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 formulaor 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.

Abstract translation: 通过将碳暴露于含有强碱和下式化合物的反应混合物中，分子物质与元素碳共价连接，或其中X表示共价连接的能够形成X-阴离子的原子或基团，并且每个Z为 部分包含多个原子，但不具有与本身直接连接至-CH 2 X或-CHX基团的原子直接相连的氢原子。 碳衬底可以是石墨或碳纳米管。

公开(公告)号：US20140367277A1

公开(公告)日：2014-12-18

申请号：US14365624

申请日：2012-12-21

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Lynne Crawford ,  Andrew Meredith ,  Nathan Lawrence ,  Timothy Jones

IPC: G01N27/28 ,  E21B47/00

CPC classification number: G01N27/28 ,  E21B47/00 ,  G01N27/302 ,  G01N27/308 ,  G01N27/48 ,  G01N33/1886

Abstract: An electrochemical sensor incorporates a ferrocenophane which is a compound with at least one bridging group covalently attached to and connecting the two cyclopentadiene rings associated with the same iron atom. This bridging group maybe tetramethylene. As compared to an equivalent sensor with ferrocene, the tolerance of elevated temperature is improved and so is the working life at ambient temperature.

Abstract translation: 电化学传感器包含二茂铁根，其是与至少一个共价连接并连接与相同铁原子相连的两个环戊二烯环的桥连基团的化合物。 该桥连基团可以是四亚甲基。 与具有二茂铁的等效传感器相比，提高温度的公差提高，并且在环境温度下的工作寿命也得到改善。

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.

公开(公告)号：US09637440B2

公开(公告)日：2017-05-02

申请号：US14365945

申请日：2012-12-21

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Lynne Crawford ,  Nathan Lawrence ,  Timothy Jones

IPC: C07C201/12 ,  C01B31/04 ,  C01B31/02 ,  H01G11/32 ,  H01M4/583 ,  H01M4/96 ,  B82Y30/00 ,  B82Y40/00 ,  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.