复合射孔压裂火药爆燃后气液作用分析

针对目前在复合射孔理论模型的研究中,国内外各石油公司及相关研究机构主要集中在火药的爆燃机理、岩石的压裂机理和裂缝的生成方面,但对于压裂火药燃烧结束后剩余高能气体及上部

HIGH ENERGY GAS AND CONTROL LIQUID ACTION CHARACTERISTICS AFTER DEFLAGRATION IN COMPLEX PERFORATION PROCESSING

In the theoretical model research on complex perforation,domestic and international oil companies and relevant research institutions mainly place their concentration on deflagrate mechanism,fracturing mechanism of rock and formulation of the crack,however,the research on effect of surplus high energy gas and water hammer of control fluid is inadequate.The function characters of high energy gas and water hammer of control fluid after fracturing charge are studied and the motion differential equation derived in this paper,a mathematical model for evaluating bottom hole pressure is proposed,the change of wellbore pressure comprehensively studied,slug of control fluid,pulse action of high energy gas and water hammer after fracturing charge are studied in detail.Last,through an example computation,it is proved that water hammer of control fluid and pulse action of surplus high energy gas have positive function on the effect of complex perforation.