石油学报 ›› 2009, Vol. 30 ›› Issue (2): 295-299.DOI: 10.7623/syxb200902025

• 石油工程 • 上一篇    下一篇

不同体积高压气体对复合射孔压井液运动的影响

赵旭1, 柳贡慧1,2, 张涛1   

  1. 1. 中国石油大学石油工程教育部重点实验室, 北京, 102249;
    2. 北京联合大学, 北京, 100010
  • 收稿日期:2008-05-05 修回日期:2008-07-24 出版日期:2009-03-25 发布日期:2010-05-21
  • 作者简介:赵旭,男,1981年7月生,2004年毕业于辽宁石油化工大学,现为中国石油大学(北京)在读博士研究生,主要从事油气井理论及射孔完井方面的研究.E-mail:zhaoxu46@163.com
  • 基金资助:

    教育部“长江学者和创新团队发展计划”项目(IRT0411)资助

Movement mechanism of control fluid in propellant perforation under the action of downhole high-pressure gas

ZHAO Xu1, LIU Gonghui1,2, ZHANG Tao1   

  1. 1. Key Laboratory for Petroleum Engineering of the Ministry of Education, China University of Petroleum, Beijing 102249, China;
    2. Beijing Union University, Beijing 100010, China
  • Received:2008-05-05 Revised:2008-07-24 Online:2009-03-25 Published:2010-05-21

摘要:

利用复合射孔相似模拟实验装置,探讨了复合射孔过程中上部压井液在井底高能气体作用下的运动规律,观测了井底高能气体与上部压井液之间的作用过程及流型的变化规律,考察了不同体积的气体作用下压井液的运动状态及变化机理。由实测的压力曲线分析结果表明,高压气体与上部压井液之间的作用与空气中的气体爆炸作用有很大的区别。压井液的受力是逐层传播的,压力波传到之处的压井液被压缩,而压力波未传到之处的压井液不受影响。在其他作用条件不变而单独改变作用气体体积的条件下,在气液作用的初期和中后期均会引起压力波动值、波动周期和波动次数的变化。但在不同的作用时期,其变化的趋势有所不同。

关键词: 复合射孔, 高能气体, 气体体积, 压井液, 运动机理, 实验研究

Abstract:

The interaction mechanism between downhole high-pressure gas and top control fluid in propellant perforation was studied on a new testing device based on the similarity principle.The movement and variations of control fluid were investigated in different volume of high-pressure gas.The curves of pressure and flow regime identification of two-phase flow were analyzed.The experimental results indicate that the interaction between downhole high-pressure gas and top control fluid is very complicated and greatly different from gas explosion in air.The force acting on the control fluid spreads in the form of wave,and the fluid could be compressed by pressure wave,but it would not be changed without pressure wave arrival.The value,cycle and times of pressure fluctuation would be changed with the variation of high-pressure gas volume under the action of gas and liquid.However,the change trends are different in the various action periods of gas and liquid.

Key words: propellant perforation, high-pressure gas, gas volume, control fluid, movement mechanism, experimental study

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