Effect of mineralogy on frictional strength and stability of shale fractures during slip

Yunzhong Jia, Yi Fang, Derek Elsworth, Wei Wu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We report experimental research on frictional strength and stability properties of shale fractures during slip. Longmaxi shale, Green River shale and Marcellus shale are selected for constant-velocity and velocity-stepping fracture shear experiments. Combing with theoretical analysis, micro controlling mechanism of mineralogy on frictional strength and stability properties of shale fractures is discussed. Results indicate that the fracture friction-stability relationship is largely affected by shale mineralogy. Frictional strength of shale fractures increases when tectosilicate content increases and phyllosilicate content decreases; during velocity-stepping experiments, three kinds of shale show velocity-strengthening behavior, which means an aseismic creep tends to occur; with the increase content of tectosilicate, shale fractures tend to have seismic slip while with the increase of phyllosilicate content, stable aseismic creep happens.

Original languageEnglish (US)
Title of host publicationISRM International Symposium - 10th Asian Rock Mechanics Symposium, ARMS 2018
PublisherInternational Society for Rock Mechanics
ISBN (Electronic)9789811190032
StatePublished - Jan 1 2018
Event10th Asian Rock Mechanics Symposium, ARMS 2018 - Singapore, Singapore
Duration: Oct 29 2018Nov 3 2018

Publication series

NameISRM International Symposium - 10th Asian Rock Mechanics Symposium, ARMS 2018

Conference

Conference10th Asian Rock Mechanics Symposium, ARMS 2018
CountrySingapore
CitySingapore
Period10/29/1811/3/18

All Science Journal Classification (ASJC) codes

  • Geochemistry and Petrology
  • Geophysics

Fingerprint Dive into the research topics of 'Effect of mineralogy on frictional strength and stability of shale fractures during slip'. Together they form a unique fingerprint.

  • Cite this

    Jia, Y., Fang, Y., Elsworth, D., & Wu, W. (2018). Effect of mineralogy on frictional strength and stability of shale fractures during slip. In ISRM International Symposium - 10th Asian Rock Mechanics Symposium, ARMS 2018 (ISRM International Symposium - 10th Asian Rock Mechanics Symposium, ARMS 2018). International Society for Rock Mechanics.