The effect of constriction in hydraulic fracturing

Junxian He, Elena Pasternak, Arcady Dyskin, Maxim Lebedev, Boris Gurevich

Research output: Chapter in Book/Conference paperConference paperpeer-review

6 Citations (Scopus)


Fractures in geomaterials e.g., hydraulic fractures often contain bridges—parts of unbroken material connecting the opposite faces of the fracture distributed over the fracture and constricting its opening. Our laboratory experiments demonstrate that the bridges can even hold the sample cut through by a fracture together, in one piece. We model such a fracture as a crack with Winkler layer whose stiffness is controlled by the bridge geometry and distribution. The model shows that short constricted fractures are insignificantly different from the conventional cracks; only large fractures, i.e. the fractures whose size is of the order of the characteristic scale of the bridge constriction are affected. The constricted fractures have the opening and the Mode I stress intensity factor bound as the fracture dimensions proportionally increase, which distinguish them from the conventional cracks where both the opening and the stress intensity factors tend to infinity as the crack size increases. © Springer International Publishing AG 2017.
Original languageEnglish
Title of host publicationBifurcation and Degradation of Geomaterials with Engineering Applications
EditorsEuripides Papamichos, Panos Papanastasiou, Elena Pasternak, Arcady Dyskin
Place of PublicationGermany
ISBN (Electronic)9783319563978
ISBN (Print)9783319563961
Publication statusPublished - 2017
Event11th International Workshop on Bifurcation and Degradation in Geomaterials - Limassol, Cyprus
Duration: 21 May 201725 May 2017

Publication series

NameSpringer Series in Geomechanics and Geoengineering
ISSN (Print)1866-8755


Conference11th International Workshop on Bifurcation and Degradation in Geomaterials


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