EXPERIMENTAL STUDY OF ROCK BREAKING EFFECT OF STEEL PARTICLES

作     者：CUI Meng ZHAI Ying-hu JI Guo-dong CUI Meng MOE Key Laboratory of Petroleum Engineering, China University of Petroleum, Beijing 102249, China CNPC Drilling Research Institute, Beijing 100195, China ZHAI Ying-hu MOE Key Laboratory of Petroleum Engineering, China University of Petroleum, Beijing 102249, China JI Guo-dong CNPC Drilling Research Institute, Beijing 100195, China

作者机构：MOE Key Laboratory of Petroleum Engineering China University of Petroleum Beijing 102249 China CNPC Drilling Research Institute Beijing 100195 China 

出 版 物：《Journal of Hydrodynamics》 (水动力学研究与进展B辑（英文版）)

年 卷 期：2011年第23卷第2期

页      面：241-246页

核心收录：

学科分类：0820[工学-石油与天然气工程] 081401[工学-岩土工程] 08[工学] 082002[工学-油气田开发工程] 0814[工学-土木工程] 

基　　金：Project supported by the Important National Science and Technology Specific Projects of China (Grant No. 2008ZX05021-002) 

主　　题：hard formation particle impact drilling water jet rock breaking effect experimental research 

摘      要：Particle impact drilling is an efficient drilling technology for deep-well hard formation, With this technology, the rock is cut mainly by high-speed spherical particle impact under hydraulic action. In this article, the influence of jet flow factors, hydraulic factors and abrasive factors on rock breaking is studied through indoor experiments of impact by steel particles. The results indicate that the particle water jet has an optimal standoff distance and particle concentration; the rock breaking effect declines with the increase of the confining pressure and the decrease of the pump pressure and particle diameter. This study will provide some food of thought for the development of particle impact drilling technology.