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1. 发明申请

US20110162977A1 ELECTROCHEMICAL SENSOR UTILISING A DUAL REDOX SYSTEM CONTAINED WITHIN A SINGLE MOLECULE 有权
标题翻译：电化学传感器应用于单分子含有的双重氧化还原系统
公开(公告)号：US20110162977A1
公开(公告)日：2011-07-07
申请号：US13001964
申请日：2009-05-01
申请人： Valerie Lafitte , Nathan Lawrence
发明人： Valerie Lafitte , Nathan Lawrence
IPC分类号： G01N27/26
CPC分类号： G01N27/48
摘要： An electrochemical sensor utilises a chemical compound which is not a macromolecule but rather is a single chemical compound of determinate structure, incorporating two redox systems which differ in their response to a species to be detected. In one form, one redox system displays a voltammetric wave which is pH dependent while another displays a voltammetric wave which is pH independent and acts as an internal reference. The sensor comprises a solid substrate, which may be carbonaceous, on which the compound is immobilized. The sensor may be incorporated into a tool to be suspended in a wellbore.
摘要翻译：电化学传感器利用不是大分子的化合物，而是具有确定结构的单一化学化合物，其结合了两种不同于待检测物种的氧化还原体系。在一种形式中，一种氧化还原系统显示pH依赖性的伏安波，而另一种显示与pH无关的伏安波，并且用作内部参考。传感器包括固体基质，其可以是碳质的，化合物固定在其上。传感器可以结合到工具中以悬挂在井眼中。

2. 发明授权

US09804123B2 Electrochemical sensor utilising a dual redox system contained within a single molecule 有权
公开(公告)号：US09804123B2
公开(公告)日：2017-10-31
申请号：US13001964
申请日：2009-05-01
申请人： Valerie Lafitte , Nathan Lawrence
发明人： Valerie Lafitte , Nathan Lawrence
IPC分类号： G01N27/48
CPC分类号： G01N27/48
摘要： An electrochemical sensor utilizes a chemical compound which is not a macromolecule but rather is a single chemical compound of determinate structure, incorporating two redox systems which differ in their response to a species to be detected. In one form, one redox system displays a voltammetric wave which is pH dependent while another displays a voltammetric wave which is pH independent and acts as an internal reference. The sensor comprises a solid substrate, which may be carbonaceous, on which the compound is immobilized. The sensor may be incorporated into a tool to be suspended in a wellbore.

3. 发明授权

US08758593B2 Electrochemical sensor 有权
标题翻译：电化学传感器
公开(公告)号：US08758593B2
公开(公告)日：2014-06-24
申请号：US12852315
申请日：2010-08-06
申请人： Nathan Lawrence , Valerie Lafitte
发明人： Nathan Lawrence , Valerie Lafitte
IPC分类号： G01N27/327
CPC分类号： G01N27/302 , B82Y30/00 , E21B47/10 , G01N27/308 , G01N27/3335
摘要： An electrochemical sensor and a method for using an electrochemical sensor are described where the electrochemical sensor comprises a working electrode having thereon one or more redox species that are sensitive to an analyte to be measured and a polymer coating that provides for interaction between the redox species and the analyte.
摘要翻译：描述了电化学传感器和使用电化学传感器的方法，其中电化学传感器包括其上具有一种或多种对要测量的分析物敏感的氧化还原物质的工作电极和提供氧化还原物质和分析物。

4. 发明申请

US20110048969A1 ELECTROCHEMICAL SENSOR 有权
标题翻译：电化学传感器
公开(公告)号：US20110048969A1
公开(公告)日：2011-03-03
申请号：US12852315
申请日：2010-08-06
申请人： Nathan Lawrence , Valerie Lafitte
发明人： Nathan Lawrence , Valerie Lafitte
IPC分类号： G01N27/416 , G01N27/30 , B05D5/12
CPC分类号： G01N27/302 , B82Y30/00 , E21B47/10 , G01N27/308 , G01N27/3335
摘要： An electrochemical sensor and a method for using an electrochemical sensor are described where the electrochemical sensor comprises a working electrode having thereon one or more redox species that are sensitive to an analyte to be measured and a polymer coating that provides for interaction between the redox species and the analyte.
摘要翻译：描述了电化学传感器和使用电化学传感器的方法，其中电化学传感器包括其上具有一种或多种对要测量的分析物敏感的氧化还原物质的工作电极和提供氧化还原物质和分析物。

5. 发明授权

US08695708B2 Method for treating subterranean formation with degradable material 有权
标题翻译：用可降解材料处理地层的方法
公开(公告)号：US08695708B2
公开(公告)日：2014-04-15
申请号：US12873435
申请日：2010-09-01
申请人： Andrey Fedorov , Olesya Levanyuk , Tatiana Zolnikova , Vadim Khlestkin , Alexander Nadeev , Diankui Fu , Bruno Lecerf , Shiyi Wang , Gary John Tustin , Valerie Lafitte
发明人： Andrey Fedorov , Olesya Levanyuk , Tatiana Zolnikova , Vadim Khlestkin , Alexander Nadeev , Diankui Fu , Bruno Lecerf , Shiyi Wang , Gary John Tustin , Valerie Lafitte
IPC分类号： E21B43/26 , E21B43/27
CPC分类号： C09K8/68 , C09K8/703 , C09K2208/08 , C09K2208/30 , E21B43/26
摘要： A method for treating a subterranean formation penetrated by a wellbore is provided. The method includes providing a treatment fluid containing a viscoelastic surfactant having at least one degradable linkage, a hydrolysable material, and a pH control material, and injecting the treatment fluid into a subterranean formation. The pH control material may have a pH equal or greater than about 9 and may include a strongly alkaline material and an oxidizing agent.
摘要翻译：提供了一种用于处理由井眼穿透的地层的方法。该方法包括提供含有具有至少一种可降解键的粘弹性表面活性剂的处理流体，可水解材料和pH控制材料，并将处理流体注入到地层中。 pH控制材料可以具有等于或大于约9的pH，并且可以包括强碱性材料和氧化剂。

6. 发明授权

US09377434B2 Electro-chemical sensor 有权
标题翻译：电化学传感器
公开(公告)号：US09377434B2
公开(公告)日：2016-06-28
申请号：US13502718
申请日：2010-10-14
申请人： Valerie Lafitte , Nathan S. Lawrence
发明人： Valerie Lafitte , Nathan S. Lawrence
IPC分类号： G01N27/403 , G01N27/416 , G01V3/18 , G01N27/333 , G01N33/18
CPC分类号： G01N27/3335 , G01N33/18
摘要： An electrochemical sensor for the presence or concentration of an analyte has at least one electrode and at least one electrochemically active species able to undergo electrochemical reaction in response to electrical potential applied to the electrode, where the said reaction is modified by the presence of the analyte. This sensor has the novel characteristic that at least one said electrochemically active species is encapsulated within polymer particles. These particles are preferably formed from an amorphous polymer with a glass transition temperature above the temperature of the fluid to which the sensor is exposed. The encapsulating polymer protects the analyte species from degradation, but a small analyte such as a hydrogen or bisulfide ion can pass through the polymer and undergo reaction at the active species.
摘要翻译：用于分析物的存在或浓度的电化学传感器具有至少一个电极和至少一个电化学活性物质，其能够响应于施加到电极的电势而经历电化学反应，其中所述反应通过分析物的存在而被修饰。该传感器具有将至少一种所述电化学活性物质包封在聚合物颗粒内的新颖特征。这些颗粒优选由玻璃化转变温度高于传感器所暴露的流体的温度的无定形聚合物形成。封装聚合物保护分析物物质免于降解，但是小分析物例如氢或二硫化物离子可以通过聚合物并在活性物质上进行反应。

7. 发明授权

US10240083B2 Thickening of fluids 有权
公开(公告)号：US10240083B2
公开(公告)日：2019-03-26
申请号：US14397647
申请日：2013-05-10
申请人： Gary John Tustin , Valerie Lafitte , Bruno Drochon
发明人： Gary John Tustin , Valerie Lafitte , Bruno Drochon
IPC分类号： C09K8/88 , E21B43/16 , C09K8/90 , C08L5/00 , C08L101/02 , C08J3/24 , C09K8/12 , C09K8/512 , C09K8/575 , C09K8/68 , C08B37/00 , A61K8/73 , A61Q19/00 , A61K8/81 , C11D3/37 , C11D17/00 , C09D5/00 , C08F8/40 , C08L25/18 , C09D7/43
摘要： An aqueous fluid, possibly a wellbore fracturing fluid, comprises an aqueous solution or dispersion of a first polymer, which may be polysaccharide, as a thickener and a cross linking agent to enhance the viscosity of the fluid by crosslinking the first polymer, wherein the crosslinking agent is a second polymer comprising at least one polymer chain with phenyl boronate groups distributed along the polymer chain and the phenyl boronic acid groups have nitrogen attached to the phenyl group at a position which is meta relative to the boronate group.

8. 发明授权

US08393395B2 Use of encapsulated chemical during fracturing 失效
$Use of encapsulated chemical during fracturing$
标题翻译：在压裂过程中使用封装的化学物质
公开(公告)号：US08393395B2
公开(公告)日：2013-03-12
申请号：US12477442
申请日：2009-06-03
申请人： Thomas Cochet , Trevor Hughes , Slaheddine Kefi , Valerie Lafitte , Khooi Tan , Gary Tustin , Shiyi Wang
发明人： Thomas Cochet , Trevor Hughes , Slaheddine Kefi , Valerie Lafitte , Khooi Tan , Gary Tustin , Shiyi Wang
IPC分类号： E21B43/26 , E21B43/16
CPC分类号： C09K8/706 , C09K8/536
摘要： A process for hydraulic fracturing of a subterranean reservoir formation penetrated by a wellbore includes pumping a fracturing fluid or other aqueous fluid from the surface via the wellbore and into the reservoir. This fluid is an aqueous suspension of particles which each comprise an oilfield chemical distributed within an encapsulating matrix of water-insoluble carrier material. The encapsulating matrix is chosen so as to provide a delayed release of the oilfield chemical from the particles into surrounding fluid, such that oilfield chemical is liberated from the particles after they have entered the fracture. The encapsulating matrix may be a polymer which is at least partially amorphous, with a glass transition temperature below the reservoir temperature.
摘要翻译：由井筒穿透的地下储层地层的水力压裂过程包括从表面经由井孔泵送压裂流体或其它含水流体并进入储层。该流体是颗粒的水性悬浮液，每个颗粒包含分布在水不溶性载体材料的包封基质内的油田化学品。选择密封基质以便将油田化学品从颗粒延迟释放到周围的流体中，使得油田化学品在进入裂缝之后从颗粒中释放出来。封装基质可以是至少部分无定形的聚合物，其玻璃化转变温度低于储层温度。

9. 发明申请

US20100307744A1 USE OF ENCAPSULATED CHEMICAL DURING FRACTURING 失效
标题翻译：破裂期间使用封装化学品
公开(公告)号：US20100307744A1
公开(公告)日：2010-12-09
申请号：US12477442
申请日：2009-06-03
申请人： Thomas Cochet , Trevor Hughes , Slaheddine Kefi , Valerie Lafitte , Khooi Tan , Gary Tustin , Shiyi Wang
发明人： Thomas Cochet , Trevor Hughes , Slaheddine Kefi , Valerie Lafitte , Khooi Tan , Gary Tustin , Shiyi Wang
IPC分类号： E21B43/26 , E21B47/00 , E21B43/267
CPC分类号： C09K8/706 , C09K8/536
摘要： A process for hydraulic fracturing of a subterranean reservoir formation penetrated by a wellbore includes pumping a fracturing fluid or other aqueous fluid which is an aqueous suspension of particles which each comprise an oilfield chemical distributed within an encapsulating matrix of water-insoluble carrier_material from the surface via the wellbore and into the reservoir. The encapsulating matrix is chosen so as to provide a delayed release of the oilfield chemical from the particles into surrounding fluid, such that oilfield chemical is liberated from the particles after they have entered the fracture. The encapsulating matrix may be a polymer which is at least partially amorphous, with a glass transition temperature below the reservoir temperature.
摘要翻译：由井筒穿透的地下储层地层的水力压裂过程包括泵送压裂液或其它含水流体，其是颗粒的水性悬浮液，每个颗粒包含分布在水不溶性载体材料的包封基质内的油田化学物质，从表面通过井筒进入水库。选择密封基质以便将油田化学品从颗粒延迟释放到周围的流体中，使得油田化学品在进入裂缝之后从颗粒中释放出来。封装基质可以是至少部分无定形的聚合物，其玻璃化转变温度低于储层温度。

10. 发明授权

US09523667B2 Electrochemical sensor system 有权
标题翻译：电化学传感器系统
公开(公告)号：US09523667B2
公开(公告)日：2016-12-20
申请号：US13584587
申请日：2012-08-13
申请人： Valerie Lafitte , Gary John Tustin
发明人： Valerie Lafitte , Gary John Tustin
IPC分类号： G01N27/404 , G01N33/28 , G01N27/48 , E21B47/01 , E21B49/08
CPC分类号： G01N33/2823 , E21B47/01 , E21B49/087 , G01N27/48
摘要： An electrochemical sensor measuring concentration of an analyte in a test fluid at 50° C. or above by voltammetry uses electrodes in contact with an electrolyte containing the analyte and a redox-active species electrochemically convertible between reduced and oxidised forms. At least one form of the redox active species is present within surfactant micelles. The surfactant micelles enhance thermal stability of the redox active species and may also solubilise a species with poor water solubility, such as t-butylferrocene. A downhole tool incorporating such a sensor comprises a barrier, permeable to the analyte, to separate the electrolyte from subterranean reservoir fluid, so that the sensor directly measures analyte which has passed through the barrier and thereby indirectly measures analyte in the test fluid.
摘要翻译：通过伏安法测量在50℃或以上的测试流体中的分析物的浓度的电化学传感器使用与含有分析物的电解质接触的电极和在还原和氧化形式之间电化学转化的氧化还原活性物质。至少一种形式的氧化还原活性物质存在于表面活性剂胶束内。表面活性剂胶束提高了氧化还原活性物质的热稳定性，也可能溶解水溶性差的物质，如叔丁基二茂铁。结合这样的传感器的井下工具包括可分析物的隔离层，以将电解质与地下储层流体分离，使得传感器直接测量已经通过屏障的分析物，从而间接地测量测试流体中的分析物。

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