流体机械2013，Vol.41Issue(2)：1-6,6.DOI:10.3969/j.issn.1005-0329.2013.02.001
水力喷射径向水平井射流钻头优选试验研究
Experimental Research on Optimum of Jetting Bit in Radial Drilling by Hydra-jet
摘要
Abstract
The depth and diameter of the drainage hole greatly rely on he rock - breaking performance of the jetting bit. The law and performance of the multi - orifice nozzle and combined jet nozzle commonly used as jetting bit in radial drilling were compared by experiment. The results show that the influence of impacting time, nozzle pressure, standoff distance and confined pressure on the rock - breaking law of the two nozzles is almost the same,and the optimal standoff distance of multi - orifice nozzle is 5 to 6 times of the nozzle diameter,but there is not optimal standoff distance of combined jet nozzle. The rock breaking efficiency is higher and depth of drainage hole is greater of multi - orifice nozzle, but the drainage hole diameter of the combined jet nozzle is bigger than multi - orifice nozzle. The results of this paper can be guidance for the choice of jetting bit of radial drilling.关键词
射流钻头/混合射流喷嘴/多孔喷嘴/径向水平井/试验研究Key words
jetting bit/multi - orifice nozzle/combined jet nozzle/radial drilling/rock breaking/experiment分类
机械制造引用本文复制引用
迟焕鹏,李根生,廖华林,黄中伟,宋先知,邸飞,唐冠伟..水力喷射径向水平井射流钻头优选试验研究[J].流体机械,2013,41(2):1-6,6.基金项目
国家油气重大专项课题(2011ZX05009-005和2011ZX05022) （2011ZX05009-005和2011ZX05022）
中国博士后科学基金(20110490540) （20110490540）
