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    Electrochemical sensor system
    3.
    发明授权
    Electrochemical sensor system 有权
    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。

    Use of encapsulated chemical during fracturing
    6.
    发明授权
    Use of encapsulated chemical during fracturing 失效
    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。

    USE OF ENCAPSULATED CHEMICAL DURING FRACTURING
    7.
    发明申请
    USE OF ENCAPSULATED CHEMICAL DURING FRACTURING 失效
    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。

    USE OF ENCAPSULATED TRACERS
    8.
    发明申请
    USE OF ENCAPSULATED TRACERS 有权
    使用牵引器

    公开(公告)号：US20100307745A1

    公开(公告)日：2010-12-09

    申请号：US12477502

    申请日：2009-06-03

    申请人： Valerie Lafitte ,  Trevor Hughes ,  Slaheddine Kefi ,  Mathew Miller ,  Gary Tustin ,  Shiyi Wang

    发明人： Valerie Lafitte ,  Trevor Hughes ,  Slaheddine Kefi ,  Mathew Miller ,  Gary Tustin ,  Shiyi Wang

    IPC分类号： E21B47/00

    CPC分类号： C09K8/62 ,  E21B43/26 ,  E21B47/1015

    摘要： A process of making observations of a subterranean reservoir penetrated by a wellbore uses distinguishable sets of tracer particles and comprises steps of: (i) delivering a plurality of sets of tracer particles to respective subterranean locations via the wellbore, the particles in each set comprising a tracer substance which distinguishes that set form the other sets; (ii) causing or allowing the tracer substances to flow out from the tracer particles whilst the particles are at the respective subterranean locations; (iii) causing or allowing production of fluid out of said reservoir via the wellbore; and (iv) detecting the presence or absence of the tracer substances in the produced fluid. The tracer substances are sufficiently distinguishable from each other to enable a tracer substance detected in the produced fluid to identify the set of tracer particles from which it has come and hence identify the location from which it has come. The process may be used in conjunction with hydraulic fracturing, placing sets of particles at different locations within a fracture and/or in different fractures extending from a single wellbore.

    摘要翻译： 对井眼穿透的地下储层进行观测的过程使用可区分的示踪剂颗粒组，并且包括以下步骤：（i）经由井孔将多组示踪剂颗粒递送到相应的地下位置，每组中的颗粒包括 跟踪物质，其区别于其他集合; （ii）当所述颗粒在相应的地下位置时，导致或允许示踪物质从示踪剂颗粒流出; （iii）导致或允许通过井筒从所述储存器中产生流体; 和（iv）检测产生的流体中示踪物质的存在或不存在。 示踪剂物质彼此充分区分，以使在所产生的流体中检测到的示踪物质能够识别来自其​​的示踪剂颗粒组，并因此识别出来的位置。 该方法可以与水力压裂结合使用，将一组颗粒放置在裂缝内的不同位置和/或从单个井眼延伸的不同裂缝中。

    Use of encapsulated tracers
    9.
    发明授权
    Use of encapsulated tracers 有权
    使用封装示踪剂

    公开(公告)号：US09290689B2

    公开(公告)日：2016-03-22

    申请号：US12477502

    申请日：2009-06-03

    申请人： Valerie Lafitte ,  Trevor Hughes ,  Slaheddine Kefi ,  Matthew Miller ,  Gary Tustin ,  Shiyi Wang

    发明人： Valerie Lafitte ,  Trevor Hughes ,  Slaheddine Kefi ,  Matthew Miller ,  Gary Tustin ,  Shiyi Wang

    IPC分类号： E21B43/26 ,  C09K8/62 ,  E21B47/10

    CPC分类号： C09K8/62 ,  E21B43/26 ,  E21B47/1015

    摘要： A process of making observations of a subterranean reservoir penetrated by a wellbore uses distinguishable sets of tracer particles and comprises steps of: (i) delivering a plurality of sets of tracer particles to respective subterranean locations via the wellbore, the particles in each set comprising a tracer substance which distinguishes that set form the other sets; (ii) causing or allowing the tracer substances to flow out from the tracer particles whilst the particles are at the respective subterranean locations; (iii) causing or allowing production of fluid out of said reservoir via the wellbore; and (iv) detecting the presence or absence of the tracer substances in the produced fluid. The tracer substances are sufficiently distinguishable from each other to enable a tracer substance detected in the produced fluid to identify the set of tracer particles from which it has come and hence identify the location from which it has come. The process may be used in conjunction with hydraulic fracturing, placing sets of particles at different locations within a fracture and/or in different fractures extending from a single wellbore.

    摘要翻译： 对井眼穿透的地下储层进行观测的过程使用可区分的示踪剂颗粒组，并且包括以下步骤：（i）经由井孔将多组示踪剂颗粒递送到相应的地下位置，每组中的颗粒包括 跟踪物质，其区别于其他集合; （ii）当所述颗粒在相应的地下位置时，导致或允许示踪物质从示踪剂颗粒流出; （iii）导致或允许通过井筒从所述储存器中产生流体; 和（iv）检测产生的流体中示踪物质的存在或不存在。 示踪剂物质彼此充分区分，以使在所产生的流体中检测到的示踪物质能够识别来自其​​的示踪剂颗粒组，并因此识别出来的位置。 该方法可以与水力压裂结合使用，将一组颗粒放置在裂缝内的不同位置和/或从单个井眼延伸的不同裂缝中。

    Electro-chemical sensor
    10.
    发明授权
    Electro-chemical sensor 有权
    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。