An Auto-Switched Chaos System Design and Experimental Study of Pulsed Cavitating Multihole Nozzle

摘要：

In order to improve the rock breaking ability of jet nozzle in radial drilling technique, pulsed cavitating multihole nozzle was designed on the basis of multihole nozzle.And its modulation mechanism of pulsed cavitating jet was analyzed. Rock breaking test was carried out to compare the rock breaking results of pulsed cavitating multihole nozzle and multihole nozzle.The results indicated that the rock breaking result of pulsed cavitating multihole nozzle is better than that of multihole nozzle.The rock breaking volume is 1.23~2.35 times.To guarantee the minimum hole diameter is bigger than nozzle diameter, jet impact pressure should not be lower than 30MPa in the experiment.The experimental optimal standoff distance is 12mm.The findings in this paper can increase the extension of horizontal holes and improve drilling rate in radial drilling technique.

关键词： pulsed cavitating multihole nozzle hole diameter hole depth rock breaking volume

作者: Ma Dongjun Li Gensheng Huang Zhongwei Niu Jilei Song Xianzhi

作者单位: State Key Laboratory of Petroleum Resource and Prospecting (China University of Petroleum),Beijing,102249,PR. China

会议类型: 国际会议

会议名称: International Conference on Advances in Engineering 2011(2011年工程研究进展国际学术会议 ICAE2011)

会议地点: 南京

会议语种:英文

页码: 454-458

在线出版日期: 2011-12-17（万方平台首次上网日期，不代表论文的发表时间）