School of Civil, Environmental and Mining Engineering

Postgraduate research

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Current and completed research by our postgraduate students.

Contact

Yang Wang

Phone: (+61 8) 6488 2446


Start date

Aug 2014

Submission date

Aug 2018

Yang Wang

Yang Wang profile photo

Thesis

Advanced coupled hydro-thermo-mechanical modeling for fractured-porous rock based on adaptive and conforming lattice network model

Summary

Hydraulic fracturing has been developed as an important and prevalent technology in petroleum industry for improving the oil and gas production performance in low-permeability reservoirs. The accurate numerical analysis about evolution of fractures during hydraulic fracturing process is of increasing importance to the design of fracturing treatments. In this study, based on lattice network model, an advanced coupled thermos-hydro –mechanical (THM) simulator will be developed to simulate the fracture initiation, growth, nucleation and interaction in anisotropic, inhomogeneous and pre-fractured porous rocks, which allows the simulation more realistic. Flow within fractures and porous matrix is modeled using pipe network method governed by the Darcy’s law. Fracture initiation and growth in fracture-porous rocks follows linear elastic fracture mechanics (LEFM), and numerically solved by an adaptive and conforming lattice network model by considering coupling effect of thermos-hydro-mechanical properties.

Why my research is important

Until now, there is no adequate hydraulic fracturing simulator being able to model the three dimensional (3D) fracturing process in an inhomogeneous, anisotropic and heterogeneous fractured porous rocks. In this research, an advanced simulator will be developed to model the 2D and 3D fracture initiation and evolution in fractured porous rocks, which considers the pre-existed fracture network and porous matrix. It will handle the fracture growth, branching, nucleation and interaction among initiated fractures and pre-existed fractures. In addition, the poro-elasticity effect, leak-off effect, rock characteristics and thermal component are also incorporated in the simulator. The ability of the advanced simulator to accurately model hydraulic fracturing process in more realistic situations will be beneficial to optimization of treatment designs in shale gas/oil industry for saving the costs.

Funding

  • IPRS

 

School of Civil, Environmental and Mining Engineering

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Last updated:
Thursday, 19 September, 2013 11:39 AM

http://www.ceme.uwa.edu.au/416645