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Focused Sampling of Reservoir Fluids Achieves Undetectable Levels of Contamination
Author(s): 
Pages: 375-379
Year: Issue:  4
Journal: WELL LOGGING TECHNOLOGY

Keyword:  石油测井聚焦取样常规抽排取样屏蔽油藏流体污染;
Abstract: 油藏工程和生产方式在很大程度上取决于相态特征和多相流,并且越来越依赖于数值模拟,而数值模拟又必须根据流体PVT实验测量数据.如果所取地层流体样品质量不高,污染物较多,实验评价不正确,会使后面的工序决策失误.而聚焦取样则可较快降低取样流体的污染程度.聚焦取样需要样品管线和屏蔽管线,并且每条管线有自己的抽排泵、控制阀、压力表和流体分析系统,分别监测样品区和屏蔽区污染物的清洗过程.通过实例对聚焦取样与传统取样进行了比较,介绍了聚焦取样技术的特点及其应用,实验证明聚焦取样与常规抽排取样相比,清洗速度快,清洗效果更好.
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