Show simple item record

dc.contributor.authorZhang, Fengshou
dc.contributor.authorAn, Mengke
dc.contributor.authorZhang, Lianyang
dc.contributor.authorFang, Yi
dc.contributor.authorElsworth, Derek
dc.date.accessioned2019-07-30T23:28:30Z
dc.date.available2019-07-30T23:28:30Z
dc.date.issued2019-02-27
dc.identifier.citationZhang, F., An, M., Zhang, L., Fang, Y., & Elsworth, D. ( 2019). The role of mineral composition on the frictional and stability properties of powdered reservoir rocks. Journal of Geophysical Research: Solid Earth, 124, 1480– 1497. https://doi.org/10.1029/2018JB016174en_US
dc.identifier.issn2169-9313
dc.identifier.issn2169-9356
dc.identifier.doi10.1029/2018jb016174
dc.identifier.urihttp://hdl.handle.net/10150/633591
dc.description.abstractThe growing hazard of induced seismicity driven by the boom in unconventional resources exploitation is strongly linked to fault activation. We perform laboratory measurements on simulated fault gouges comprising powdered reservoir rocks from major oil and gas production sites in China, to probe the control of mineral composition on fault friction and stability responses during reservoir stimulation. Double direct shear experiments were conducted on gouges with phyllosilicate content ranging from 0 to 30wt.% and grain sizes <150m, at constant normal stresses of 10-40MPa and conditions of room temperature and water saturation. The velocity step and slide-hold-slide sequences were employed to evaluate frictional stability and static healing, respectively. Results indicate that the mineralogy of the gouges exhibit a strong control on the frictional strength, stability, and healing. Phyllosilicate-rich samples show lower frictional strength and higher values of (a-b), promoting stable sliding. For the gouges studied, the frictional strength decreases monotonically with increasing phyllosilicate content, and a transition from velocity weakening to velocity strengthening behavior is evident at 15wt.% phyllosilicates. Intermediate healing rates are common in gouges with higher content of phyllosilicates, with high healing rates predominantly in phyllosilicate-poor gouges. As an indispensable component in reservoir rocks, the carbonates are shown to affect both the frictional stability and healing response. These findings can have important implications for understanding the effects of mineralogy on fault behavior and induced seismic potential in geoengineering activities, particularly in reservoirs in China.en_US
dc.description.sponsorshipNational Natural Science Foundation of China [41672268, 41772286]; U.S. Department of Energy (DOE) [DE-FE0023354]en_US
dc.language.isoenen_US
dc.publisherAMER GEOPHYSICAL UNIONen_US
dc.relation.urlhttps://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2018JB016174en_US
dc.rights©2019. American Geophysical Union. All Rights Reserved.en_US
dc.subjectfault gougeen_US
dc.subjectmineral compositionen_US
dc.subjectfrictional stabilityen_US
dc.subjecthealingen_US
dc.titleThe Role of Mineral Composition on the Frictional and Stability Properties of Powdered Reservoir Rocksen_US
dc.typeArticleen_US
dc.contributor.departmentUniv Arizona, Dept Civil Engn & Engn Mechen_US
dc.identifier.journalJOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTHen_US
dc.description.note6 month embargo; published online: 5 February 2019en_US
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en_US
dc.eprint.versionFinal published versionen_US
dc.source.volume124
dc.source.issue2
dc.source.beginpage1480-1497
refterms.dateFOA2019-08-05T00:00:00Z


Files in this item

Thumbnail
Name:
Zhang_et_al-2019-Journal_of_Ge ...
Size:
4.008Mb
Format:
PDF
Description:
Final Published Version

This item appears in the following Collection(s)

Show simple item record