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Cohesive-Zone Effects in Hydraulic Fracture Propagation

Cohesive-Zone Effects in Hydraulic Fracture Propagation

This is a Preprint and has not been peer reviewed. The published version of this Preprint is available: https://doi.org/10.1016/j.jmps.2019.103727. This is version 2 of this Preprint.

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Authors

Dmitry Garagash

Abstract

Hydraulic fracture presents an interesting case of crack elasticity and fracture propagation non-linearly coupled to fluid flow. Hydraulic fracture (HF) is often modeled using the Linear Elastic Fracture Mechan- ics (LEFM), which assumes that the damaged zone associated with the rock breakage near the advancing fracture front is small compared to the lengthscales of other physical processes acting during propaga- tion. The latter include dissipation in viscous fluid flow in the fracture channel, of which the fluid lag - a region adjacent to the fracture tip filled with fracturing fluid volatiles and/or infiltrated formation pore fluid - is th...  more

DOI

https://doi.org/10.31223/osf.io/5sgwz

Subjects

Earth Sciences, Engineering, Engineering Mechanics, Engineering Science and Materials, Environmental Sciences, Geophysics and Seismology, Oil, Gas, and Energy, Physical Sciences and Mathematics

Keywords

fracture mechanics; hydraulic fracture; cohesive zone; fluid lag; Gauss-Chebyshev quadrature; equation of motion

Dates

Published: 2019-08-22 22:44

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License

Academic Free License (AFL) 3.0