夏强,黄中伟,李根生,赵振峰,付钢旦,田守嶒
XIA Qiang1,HUANG Zhong-wei1,LI Gen-sheng1,ZHAO Zhen-feng2,FU Gang-dan2,TIAN Shou-ceng1(1.China University of Petroleum

• 1:中国石油大学
• 2:中国石油天然气股份有限公司长庆油田分公司油气工艺技术研究院

摘要(Abstract)：

水力喷射压裂是集射孔、压裂、水力封隔一体化的新型增产改造技术。本文在室内模拟试验的基础上,对影响水力喷射孔内压力分布和射流增压效果的5个参数(围压、喷嘴压降、喷距、入口比率、射孔孔眼深度)进行了系统研究,初步得到了各参数对孔内压力和射流增压的影响规律。试验结果表明,喷嘴压降和入口比率对孔内压力和射流增压影响较大,其中喷嘴压降与射流增压成线性关系,通过线性回归得到试验中6种不同直径喷嘴射流增压公式。
Hydrajet-fracturing,a unique,relatively new stimulation technology,combined hydrajetting and fracturing techniques.The five diverse factors(confining pressure,nozzle pressure drop,nozzle distance,entry ratio and perforation tunnel depth) with the foundation of laboratory experimental data were systematically analyzed,and the law of pressure distribution of perforation tunnel and jetting boost pressure was preliminarily acquired.The results show that nozzle pressure drop and entry ratio have great influence on pressure distribution of perforation tunnel and jetting boost pressure,and there has a linear relationship between nozzle pressure drop with jetting boost pressure.It obtains jetting boost pressure formula with six different diameter nozzles on experiment through linear regression.

关键词(KeyWords)： 水力喷射;低渗透;孔内压力;射流增压;试验研究
hydrajetting;low-permeability;pressure of perforation tunnel;jetting boost pressure;experiment study

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(50774089);; 国家863计划课题(2007AA09Z315)

作者(Author): 夏强,黄中伟,李根生,赵振峰,付钢旦,田守嶒
XIA Qiang1,HUANG Zhong-wei1,LI Gen-sheng1,ZHAO Zhen-feng2,FU Gang-dan2,TIAN Shou-ceng1(1.China University of Petroleum

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