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Friction

pp 1–9 | Cite as

Sliding friction of shale rock on dry quartz sand particles

  • Huijie Zhang
  • Shuhai Liu
  • Huaping Xiao
Open Access
Research Article
  • 28 Downloads

Abstract

The sliding friction of rock, involving all kinds of particles at the contact surface, is relevant to many problems, ranging from those in artificial engineering to earthquake dynamics. In this work, the frictional performance of the shale rock–dry quartz sand contact was investigated using a self-developed testing device. The study showed that the coefficient of friction of the contact increases with nominal stress and that the corresponding friction force increases approximately linearly with nominal stress, which is directly related to the contact stress between each single sand particle and rock shale. An overall dynamic coefficient, γ, reflecting the response of friction force to nominal stress, first decreases and then increases with area ratio, which is determined by not only the contact stress but also the interparticle friction force. These have important repercussions for a preliminary understanding of the frictional properties of the shale rock–dry quartz sand contact in hydraulic fracturing and related industrial applications.

Keywords

shale rock quartz sand frictional performance hydraulic fracturing 

Notes

Acknowledgment

Support by National Natural Science Foundation of China (No. 51575529) is acknowledged.

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© The author(s) 2018

Open AccessThe articles published in this journal are distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  1. 1.College of Mechanical and Transportation EngineeringChina University of Petroleum-BeijingBeijingChina
  2. 2.State Key Laboratory of Oil and Gas Resources and EngineeringChina University of Petroleum-BeijingBeijingChina

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