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    • 7. 发明授权
    • Phase separation detection in downhole fluid sampling
    • 井下液相采样中的相分离检测
    • US08528396B2
    • 2013-09-10
    • US12363835
    • 2009-02-02
    • Xu WuTsutomu YamateToru TerabayashiRicardo VasquesChengli DongPeter S. Hegeman
    • Xu WuTsutomu YamateToru TerabayashiRicardo VasquesChengli DongPeter S. Hegeman
    • E21B49/08
    • E21B49/082
    • Example methods and apparatus to detect phase separation in downhole fluid sampling operations are disclosed. An example method to detect a phase separation condition of a fluid from a subterranean involves obtaining a sample of the fluid, measuring a first characteristic value of the sample, measuring a second characteristic value of the sample and comparing the first characteristic value to a first reference value associated with a single-phase condition of the fluid to generate a corresponding first comparison result. The example method then compares the second characteristic value to a second reference value associated with the single-phase condition of the fluid to generate a corresponding second comparison result and detects the phase separation condition of the fluid based on the first and second comparison results.
    • 公开了用于检测井下液体取样操作中的相分离的示例性方法和装置。 用于检测来自地下的流体的相分离条件的示例性方法包括获得流体样品,测量样品的第一特征值,测量样品的第二特征值,并将第一特征值与第一参考值进行比较 值与流体的单相条件相关联以产生相应的第一比较结果。 该示例方法然后将第二特征值与与流体的单相条件相关联的第二参考值进行比较,以产生相应的第二比较结果,并基于第一和第二比较结果检测流体的相分离条件。