Show simple item record

dc.contributor.authorZhang, Y.
dc.contributor.authorZhang, Z.
dc.contributor.authorSarmadivaleh, Mohammad
dc.contributor.authorLebedev, Maxim
dc.contributor.authorBarifcani, Ahmed
dc.contributor.authorYu, H.
dc.contributor.authorIglauer, Stefan
dc.date.accessioned2017-06-23T02:58:32Z
dc.date.available2017-06-23T02:58:32Z
dc.date.created2017-06-19T03:39:33Z
dc.date.issued2017
dc.identifier.citationZhang, Y. and Zhang, Z. and Sarmadivaleh, M. and Lebedev, M. and Barifcani, A. and Yu, H. and Iglauer, S. 2017. Micro-scale fracturing mechanisms in coal induced by adsorption of supercritical CO2. International Journal of Coal Geology. 175: pp. 40-50.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/52992
dc.identifier.doi10.1016/j.coal.2017.04.002
dc.description.abstract

Coal bed methane production can be assisted by CO2 injection. However, CO2 adsorption in the coal matrix leads to a dramatic reduction in permeability and an associated change in microstructure caused by coal matrix swelling. Furthermore, it has been recently observed that the induced swelling stress fractures the unswelling (mineral) phase in laboratory investigations. However, the failure mechanisms are still not understood, and the way internal swelling stresses are generated is not clear. Thus, in this paper, we propose a new method which combines X-ray microtomography imaging, nanoindentation testing and DEM modelling with which we can predict the rock mechanical performance at micro scale. Indeed we successfully simulated such swelling processes inside a coal sample, including a simulation of the fracture mechanism of the mineral phase, and a quantification of the in-situ von Mises stresses generated by swelling. We conclude that our proposed method is an efficient way for analysis and prediction of coal microfracturing and the associated microscale rock mechanical behavior.

dc.titleMicro-scale fracturing mechanisms in coal induced by adsorption of supercritical CO2
dc.typeJournal Article
dcterms.source.volume175
dcterms.source.startPage40
dcterms.source.endPage50
dcterms.source.issn0166-5162
dcterms.source.titleInternational Journal of Coal Geology
curtin.departmentDepartment of Petroleum Engineering
curtin.accessStatusOpen access


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record