41. meshfree hydro-mechanical modeling of fracking processes in fluid-saturated porous media
Name: Haoyan Wei
Grad Year: 2017
The hydraulic fracturing technology has been developed and performed worldwide to achieve efficient exploitation of hydrocarbons in unconventional reservoirs. Although great progress has been made in recent years, the knowledge of the actual fracturing process, the resulting fracture patterns and their potential environmental impact is mostly empirical. Therefore, a robust computational framework is being developed, which can improve the understanding of hydraulic fracturing and thus lead to better and safer reservoir treatment. Under the stabilized nodal integration framework, a fluid pressure projection method is formulated which eliminates the spurious fluid pressure oscillation due to low permeable or undrained conditions, and also enables a significant enhancement of the computational efficiency and accuracy. To model the fracturing processes, an enriched reproducing kernel approximation is introduced in conjunction with the regularized smeared crack modelling technique, which avoids the troublesome re-meshing and mesh dependency issues associated with traditional mesh-based numerical methods. The effectiveness of the developed meshfree hydro-mechanical modelling framework is demonstrated by solving several benchmark problems.
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Civil/Structural Engineering | Energy/Clean technology | Software, Analytics