Method and system for determining asphaltene onset pressure using a using depressurization and pressurization
    17.
    发明授权
    Method and system for determining asphaltene onset pressure using a using depressurization and pressurization 有权
    使用减压和加压测定沥青质起始压力的方法和系统

    公开(公告)号:US09568459B2

    公开(公告)日:2017-02-14

    申请号:US14262480

    申请日:2014-04-25

    Abstract: Methods and systems for determining for determining asphaltene onset pressure of a formation fluid are described herein. The method includes the following processes: (a) transmitting light through a sample of the formation fluid; (b) decreasing pressure of the sample; (c) detecting intensity of the transmitted light during depressurization; (d) identifying a change in intensity of the transmitted light during depressurization; (e) increasing pressure of the sample to a fixed pressure; and (f) detecting intensity of the transmitted light at the fixed pressure and at an equilibrated light intensity. Processes (a) to (f) are repeated for a number of different fixed pressures. The asphaltene onset pressure of the formation fluid sample can be determined using (i) the intensity of the transmitted light during each depressurization and (ii) the intensity of the transmitted light at each of the different fixed pressures.

    Abstract translation: 本文描述了用于确定地层流体的沥青质起始压力的方法和系统。 该方法包括以下过程:(a)通过地层流体的样品透射光; (b)降低样品的压力; (c)在减压期间检测透射光的强度; (d)识别减压期间透射光强度的变化; (e)将样品的压力增加到固定压力; 和(f)在固定压力和平衡的光强度下检测透射光的强度。 对于许多不同的固定压力重复过程(a)至(f)。 地层流体样品的沥青质起始压力可以使用(i)每次减压期间透射光的强度和(ii)在每个不同固定压力下的透射光的强度来确定。

    Pressure Volume Temperature System
    20.
    发明申请
    Pressure Volume Temperature System 审中-公开
    压力体积温度系统

    公开(公告)号:US20160040533A1

    公开(公告)日:2016-02-11

    申请号:US14653272

    申请日:2014-02-10

    Abstract: A method and an apparatus for characterizing a fluid including a phase transition cell to receive the fluid, a piston to control fluid pressure, a pressure gauge to measure the fluid pressure and to provide information to control the piston, and connectors to connect the cell, piston, and gauge. The exterior volume of the phase transition cell, piston, gauge, and connectors is less than about 10 liters. A method and an apparatus to characterize a fluid including observing a fluid in an phase transition cell, measuring a pressure of the fluid, and adjusting a pressure control device in response to the measuring.

    Abstract translation: 一种用于表征流体的方法和装置,所述流体包括用于接收流体的相变池,用于控制流体压力的活塞,用于测量流体压力的压力计以及提供控制活塞的信息,以及用于连接电池的连接器, 活塞和量规。 相变电池,活塞,量规和连接器的外部容积小于约10升。 一种表征流体的方法和装置,包括观察相变池中的流体,测量流体的压力,以及响应于测量调节压力控制装置。

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