Design and numerical simulation of multi-layer bit with extra-high matrix

Authors

SUN Qibin, School of Engineering and Technology, China University of Geosciences(Beijing), Beijing 100083, China
SHEN Lina, Beijing Exploration Engineering Institute, Beijing 100083, ChinaFollow
YANG Gansheng, School of Engineering and Technology, China University of Geosciences(Beijing), Beijing 100083, China
TIAN Guoliang, The Sixth Geological Brigade of Shandong Provincial Bureau of Geology and Mineral Exploration and Development, Weihai 264200, China
RUAN Hailong, Beijing Exploration Engineering Institute, Beijing 100083, China
CHEN Xi, School of Engineering and Technology, China University of Geosciences(Beijing), Beijing 100083, China

Abstract

Aiming at the problem that the life of the diamond bit is limited by the height of the bit matrix, an optimized design scheme of an impregnated diamond bit with extra-high multi-layer matrix was proposed. In the design of the bit, eccentric staggered cutting teeth, alternate waterways and water baffles were introduced to ensure the cooling and effective drilling of the bit. Through strength and hydraulic flow field simulation, the strength of the drill bit was checked, the rationality of the waterway structure was verified, and the finished product of the drill bit was further realized. The drill bit breaks the restriction of the height of the drill matrix, and provides a new idea for the signficant increase of the drill bit life.

Keywords

structural design of the bit with extra-high multilayer matrix head, water baffle, strength analysis, fluid field analysis, numerical simulation

DOI

10.3969/j.issn.1001-1986.2020.03.032

Recommended Citation

SUN Qibin, SHEN Lina, YANG Gansheng, et al. (2020) "Design and numerical simulation of multi-layer bit with extra-high matrix," Coal Geology & Exploration: Vol. 48: Iss. 3, Article 33.
DOI: 10.3969/j.issn.1001-1986.2020.03.032
Available at: https://cge.researchcommons.org/journal/vol48/iss3/33

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