Low temperature inductive heating of subsurface formations
    21.
    发明授权
    Low temperature inductive heating of subsurface formations 有权
    地下地层低温感应加热

    公开(公告)号:US08875788B2

    公开(公告)日:2014-11-04

    申请号:US13083240

    申请日:2011-04-08

    CPC classification number: E21B43/24 E21B43/2408

    Abstract: Electrical current flow is induced in a ferromagnetic conductor providing time-varying electrical current at a first frequency to an electrical conductor located in a formation. The ferromagnetic conductor at least partially surrounds and at least partially extends lengthwise around the electrical conductor. The ferromagnetic conductor resistively heats up to a first temperature of at most about 300° C. Water in the formation is vaporized with heat at the first temperature. Subsequently, time-varying electrical current at a second frequency is provided to the elongated electrical conductor to induce electrical current flow at the second frequency such that the ferromagnetic conductor resistively heats up to a second temperature above about 300° C. Heat transfers from the ferromagnetic conductor at the second temperature to at least a part of the formation to mobilize at least some hydrocarbons in the part of the formation.

    Abstract translation: 在铁磁导体中感应出电流,该铁磁导体以第一频率向位于地层中的电导体提供时变电流。 铁磁导体至少部分地围绕电导体围绕并至少部分地延伸。 铁磁导体电阻加热到最多约300℃的第一温度。地层中的水在第一温度下被加热蒸发。 随后,将第二频率的时变电流提供给细长电导体以在第二频率处引起电流流动,使得铁磁性导体电阻加热至高于约300℃的第二温度。从铁磁体 导体在第二温度下至至少一部分地层,以在地层的一部分中调动至少一些烃。

    Leak detection in circulated fluid systems for heating subsurface formations
    22.
    发明授权
    Leak detection in circulated fluid systems for heating subsurface formations 失效
    用于加热地下地层的循环流体系统中的泄漏检测

    公开(公告)号:US08631866B2

    公开(公告)日:2014-01-21

    申请号:US13083246

    申请日:2011-04-08

    Abstract: A method of treating a subsurface formation includes circulating at least one molten salt through at least one conduit of a conduit-in-conduit heater located in the formation to heat hydrocarbons in the formation to at least a mobilization temperature of the hydrocarbons. At least some of the hydrocarbons are produced from the formation. An electrical resistance of at least one of the conduits of the conduit-in-conduit heater is assessed to assess a presence of a leak in at least one of the conduits.

    Abstract translation: 处理地下地层的方法包括使至少一种熔融盐通过位于地层中的导管加热器的至少一个导管循环,以将地层中的烃加热至至少烃的动员温度。 至少一些烃从地层中产生。 评估导管导管加热器中的至少一个导管的电阻以评估至少一个导管中的泄漏的存在。

    In situ heat treatment process utilizing a closed loop heating system
    26.
    发明申请
    In situ heat treatment process utilizing a closed loop heating system 有权
    使用闭环加热系统的原位热处理工艺

    公开(公告)号:US20080135254A1

    公开(公告)日:2008-06-12

    申请号:US11975690

    申请日:2007-10-19

    Abstract: Systems and methods for an in situ heat treatment process that utilizes a circulation system to heat one or more treatment areas are described herein. The circulation system may use a heated liquid heat transfer fluid that passes through piping in the formation to transfer heat to the formation. In some embodiments, the piping may be positioned in at least two of the wellbores.

    Abstract translation: 本文描述了利用循环系统加热一个或多个处理区域的原位热处理工艺的系统和方法。 循环系统可以使用通过地层中的管道的加热的液体传热流体将热量传递到地层。 在一些实施例中,管道可以定位在至少两个井眼中。

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