Effects of vertical stress on fracture propagation using super critical carbon dioxide

Akihisa Kizaki, K. Ohashi, H. Tanaka, K. Sakaguchi

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

1 Citation (Scopus)

Abstract

To clarify the effects of the vertical stress along the borehole on the hydraulic fracture formation, we conducted hydraulic fracturing experiments using the fracturing fluids of the water and the super critical carbon dioxide. A borehole was bored perpendicular to the weak plane of the rock, and horizontal stresses of 5 and 3 MPa and a vertical stress of 12 MPa were applied. The obtained results were compared with the results obtained at a lower applied vertical stress of 1 MPa. The total length of the fractures measured at the specimen surfaces for the vertical stress of 12 MPa tended to be smaller than that for a vertical stress of 1 MPa. This suggests that the horizontally oriented pores and microcracks were compressed by the high vertical stress and that the infiltration of the fracturing fluids significantly affected fracture propagation.

Original languageEnglish
Title of host publicationISRM International Symposium - EUROCK 2013
Editors Kwasniewski, Lydzba
PublisherInternational Society for Rock Mechanics
Pages963-968
Number of pages6
ISBN (Print)9781138000803
DOIs
Publication statusPublished - 2013
EventISRM International Symposium - EUROCK 2013 - Wroclaw, Poland
Duration: 2013 Oct 232013 Oct 26

Publication series

NameISRM International Symposium - EUROCK 2013

Conference

ConferenceISRM International Symposium - EUROCK 2013
CountryPoland
CityWroclaw
Period13/10/2313/10/26

ASJC Scopus subject areas

  • Geochemistry and Petrology

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