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Proceedings Paper

Design and experimental investigation about a simulation device for particle impact rock breaking
Author(s): Fushen Ren; Baojin Wang; Xiaoze Cheng; Suli Chen; Ruoxu Ma; Yang Li; Jianhua Liu
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Paper Abstract

Particle impact drilling (PID) using high-speed spherical carbide steel particles to impact rock and mechanical breaking of rock as a supplement, it is a new drilling method of breaking rock. Effects of rock fragmentation were studied by different injection speed of particles, injection angle and particle diameter based on ANSYS simulation platform. The two basic types of nozzles were studied, straight-taper nozzle model and streamline nozzle model, the mathematical model of nozzle were established based on the acceleration mechanism of solid-liquid two-phase flow, and an optimized nozzle structure is designed. A rock breaking experiment device used to simulate particle impact drilling was developed. The experimental investigations were carried out by controlling the drilling parameters such as particles injection speed, injection angle, the ratio of metal particles, drilling speed and weight on bit(WOB), etc. to study the effects of rock breaking based on this experiment device. The results show that the device can simulate the rock fragmentation process of particle impact drilling completely, it proves that technological requirements of high efficiency of breaking rock can be achieve well with particle whose diameter is 1mm, shot speed 120 m/s, it also verified the theoretical analysis of fragmentation efficiency of rock for different volume fraction and jetting angle. The test provide technical support for the popularization and application of the technology.

Paper Details

Date Published: 11 March 2015
PDF: 10 pages
Proc. SPIE 9302, International Conference on Experimental Mechanics 2014, 93021X (11 March 2015); doi: 10.1117/12.2072833
Show Author Affiliations
Fushen Ren, Northeast Petroleum Univ. (China)
Baojin Wang, Northeast Petroleum Univ. (China)
Xiaoze Cheng, Northeast Petroleum Univ. (China)
China National Petroleum Corp. (China)
Suli Chen, Northeast Petroleum Univ. (China)
Ruoxu Ma, Northeast Petroleum Univ. (China)
Yang Li, Northeast Petroleum Univ. (China)
Jianhua Liu, Northeast Petroleum Univ. (China)

Published in SPIE Proceedings Vol. 9302:
International Conference on Experimental Mechanics 2014
Chenggen Quan; Kemao Qian; Anand Asundi; Fook Siong Chau, Editor(s)

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