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    • 8. 发明申请
    • Method and Apparatus for Reducing Pressure in a Perforating Gun
    • 用于降低穿孔枪压力的方法和装置
    • US20050236183A1
    • 2005-10-27
    • US10709250
    • 2004-04-23
    • Brenden GroveLawrence BehrmannIan WaltonPhilip KneislAndrew Werner
    • Brenden GroveLawrence BehrmannIan WaltonPhilip KneislAndrew Werner
    • E21B20060101E21B7/00E21B43/116E21B43/119
    • E21B43/119Y10S102/704
    • An apparatus for reducing the post-detonation pressure of a perforating gun, the apparatus including a perforating gun carrying at least one explosive charge, wherein when the explosive charge is detonated the explosive charge produces a pressurized detonation gas, and a mechanism for reducing the pressure of the detonation gas proximate the perforating gun. The detonation gas pressure is desirably reduced in a time frame sufficient to create a dynamic underbalance condition to facilitate a surge flow of fluid from a reservoir into a wellbore. The pressure reduction mechanism may include singularly or in combination a heat sink to reduce the temperature of the detonation gas, a reactant to recombine with the reactant gas and reduce the molar density of the detonation gas, and a physical compression mechanism to utilize the waste energy of the detonation gas to create work, simultaneously reducing the temperature of the gas and the molar density of the detonation gas.
    • 一种用于降低射孔枪的爆震后压力的装置,该装置包括一个携带至少一种炸药的射孔枪,其中当炸药被引爆时,炸药产生加压的爆震气体,以及用于降低压力的机构 靠近射孔枪的爆炸气体。 期望在足以产生动态不平衡条件的时间框架内减小爆震气体压力,以促进流体从储层涌入井眼的浪涌流。 减压机构可以单独地或组合地使用散热器来降低爆震气体的温度,与反应气体重新组合的反应物并降低爆震气体的摩尔密度,以及物理压缩机构以利用废能 的爆炸气体以产生作用,同时降低气体的温度和爆震气体的摩尔密度。