聚能射孔器爆炸气体损害机理研究  

On Damaging Mechanism of Explosion Gas Produced by Jet Perforators

作　　者：李东传[1] 金成福[1] 刘桥 余海鹰[1] 

机构地区：[1]石油工业油气田射孔器材质量监督检验中心,黑龙江大庆163853 [2]中国石油大庆油田有限责任公司试油试采分公司,黑龙江大庆163412

出　　处：《测井技术》2011年第5期494-496,共3页Well Logging Technology

摘　　要：聚能射孔弹爆轰产生金属射流的同时也生成爆炸气体。爆炸气体形成的高压可在射孔孔道形成的瞬间进入孔道,引起孔道内压力升高,甚至造成损害。通过对爆炸气体产生的过程、压力影响因素、损害过程的分析认为,降低爆炸气体压力、扩大泄压空间和减少气体作用时间等方法可以降低爆炸气体造成的损害;射孔优化设计时应综合考虑聚能射孔器产生的气体压力低、井简介质密度低和地层孔隙压力等因素。提高聚能射孔弹的效率降低装药量,在不影响射孔器性能的情况下降低爆炸气体压力是最理想的方法;降低聚能射孔器内温度降低爆炸气体压力也是既经济又方便的方法。保持孔道壁的孔隙压力高于进入射孔孔道内的压力则可以避免气体损害。聚能射孔器爆炸气体造成的损害是可以预防的。Gas as well as metal jet flow is produced when shaped charges explode. High pressure produced by explosion gas enters the tunnels at the moment when perforation tunnels are formed, and causes high pressure and even damages. By analyzing the gas producing process, pressure influence factors and damaging process, it is concluded that gas damage can he decreased by reducing gas pressure, enlarging pressure-releasing space, shortening gas working time, and so oru Such factors as lower gas pressure, lower borehole medium density and formation pore pressure produced by the perforators should he considered in optimizing perforation design. The charge volume are reduced by enhancing the shaped charge efficiency. The best way to reduce the explosion gas pressure is to reduce the charge volume while not influencing the perforator performance. It is also an economic and convenient way to reduce the explosion gas pressure through reducing the temperature inside the perforators. Keeping pore pressure of the tunnel walls higher than pressure inside the tunnels can prevent gas damage. The damage produced by the explosion gas of the shaped charges can also be avoided.

关 键 词：石油射孔 聚能射孔器 爆炸气体 压力 损害 

分 类 号：TJ410.333[兵器科学与技术—火炮、自动武器与弹药工程]