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本文根据电动潜油泵的工作原理和井下流体的力学关系,对电泵井憋压时井口油压与时间的变化关系进行了理论分析,并建立起电泵井憋压曲线的基本数学模型,以便用憋压法来有效地诊断电潜泵采油井的井下工况。
According to the working principle of the electric submersible pump and the mechanics relationship of the downhole fluid, this paper theoretically analyzes the relationship between the well head pressure and the time when the pump shaft is holding pressure, and establishes the basic mathematic model of pump well pressure hold curve Using pressure suppression method to effectively diagnose the downhole conditions of ESP wells.