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中文摘要：
潜水面与地表不一致会使储层压力产生异常，给煤层气勘探开发造成影响。从异常压力的成因机理入手，应用理论分析与实例解剖相结合的方法，通过不同系统中潜水面对储层压力的作用机制研究，分析了开放系统中区域潜水面变化所引起的储层压力变化规律，反映了盆地水动力场作用下的储层压力系统的动态演化过程，指出潜水面变化是储层异常压力形成的重要机制。
英文摘要：
The difference between water table and surface can bring abnormal pressure, which will cause effect on coalbed gas development. Considering the genetic mechanisms of abnormal pressure of reservoir, through simulation analysis on the mechanism of water table effecting reservoir pressure of different system, the variety of water table causing pressure variety of reservoir pressure is analyzed, which reflects the dynamic evolvement process of reservoir pressure under the action of hydrodynamic field. The study indicated that the variety of water table is an important mechanism of reservoir abnormal pressure.
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