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THEORY AND EXPERIMENTAL STUDY OF THE SELF-EXCITED OSCILLATION PULSED JET NOZZLE

查看全文 作　　者：[1]LiaoZhenfang;[1]LiJun;[1]ChenDeshu;[1]DengXiaogang;[2]TangChuanlin;[2]ZhangFenghua 高影响力作者 机构地区：[1]InstituteofMechanicalEngineering,ChongqingUniversity,Chongqing400030,China;[2]InstituteofMechanicalEngineering,ZhuzhouInstituteoftechnology,Zhuzhou412000,China高影响力机构 出　　处：《Chinese Journal of Mechanical Engineering》索引2003年第16卷第4期,共5页高影响力期刊 基　　金：National Natural Science Foundation of China (No.59979029) 摘　　要：Comparing with usual continuous jet nozzle, the self-excited oscillation pulsed jet nozzle SEOPJN) can make jet generate a higher peak of pressure and larger scouring volume. And it can make jet increase the effective standoff distance, too. The basic theories of the SEOPJN are introduced.Some experimental results are shown. According to the results, using tricorn bits assembled the SEOPJN to drill oil well, the ROP increases by 8%~77%, and the rates of the footage for tricorn bit increases by 6.7%~44.0%. 关 键 词：自励振动 喷射管 点状旋涡 钻孔机 油井
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