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A numerical study of fracture spacing and through-going fracture formation in layered rocks

Guo, L; Latham, J-P; Xiang, J; (2017) A numerical study of fracture spacing and through-going fracture formation in layered rocks. International Journal of Solids and Structures , 110 pp. 44-57. 10.1016/j.ijsolstr.2017.02.004. Green open access

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Abstract

Naturally fractured reservoirs are an important source of hydrocarbons. Computational models capable of generating fracture geometries according to geomechanical principles offer a means to create a numerical representation of a more realistic rock mass structure. In this work, the combined finite-discrete element method is applied to investigate fracture patterns in layered rocks. First, a three-layer model undergoing layer normal compression is simulated with the aim of examining the controls on fracture spacing in layered rocks. Second, a seven-layer model with low competence contrast is modelled under direct tension parallel to the layering and bending conditions with the focus on investigating through-going fracture formation across layer interfaces. The numerical results give an insight into the understanding of various mechanisms that contribute to fracture pattern development in layered rocks.

Type: Article
Title: A numerical study of fracture spacing and through-going fracture formation in layered rocks
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.ijsolstr.2017.02.004
Publisher version: https://doi.org/10.1016/j.ijsolstr.2017.02.004
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Numerical study, Fracture model, Combined finite-discrete element method, Layered rocks, Fracture spacing, Through-going fracture
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/10067817
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