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Energies 2016, 9(7), 519; doi:10.3390/en9070519

Numerical Simulation of the Propagation of Hydraulic and Natural Fracture Using Dijkstra’s Algorithm

Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academic of Sciences, Beijing 100029, China
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Academic Editor: Mofazzal Hossain
Received: 2 March 2016 / Revised: 15 June 2016 / Accepted: 27 June 2016 / Published: 5 July 2016
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Abstract

Utilization of hydraulic-fracturing technology is dramatically increasing in exploitation of natural gas extraction. However the prediction of the configuration of propagated hydraulic fracture is extremely challenging. This paper presents a numerical method of obtaining the configuration of the propagated hydraulic fracture into discrete natural fracture network system. The method is developed on the basis of weighted fracture which is derived in combination of Dijkstra’s algorithm energy theory and vector method. Numerical results along with experimental data demonstrated that proposed method is capable of predicting the propagated hydraulic fracture configuration reasonably with high computation efficiency. Sensitivity analysis reveals a number of interesting observation results: the shortest path weight value decreases with increasing of fracture density and length, and increases with increasing of the angle between fractures to the maximum principal stress direction. Our method is helpful for evaluating the complexity of the discrete fracture network, to obtain the extension direction of the fracture. View Full-Text
Keywords: discrete fracture network; hydraulic fracturing; Dijkstra’s algorithm; hydraulic fracture discrete fracture network; hydraulic fracturing; Dijkstra’s algorithm; hydraulic fracture
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Wu, Y.; Li, X. Numerical Simulation of the Propagation of Hydraulic and Natural Fracture Using Dijkstra’s Algorithm. Energies 2016, 9, 519.

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