Abstract




 
   

IJE TRANSACTIONS B: Applications Vol. 15, No. 2 (July 2002) 125-134   

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  NUMERICAL EVALUATION OF HYDRAULIC FRACTURING PRESSURE IN A TWO-PHASE POROUS MEDIUM
 
 
A. Nouri and A. Pak

Department of Civil Engineering, Sharif University of Technology
Tehran, Iran, pak@sina.sharif.ac.ir
 
 
( Received: September 30, 1999 – Accepted in Revised Form: May 03, 2001 )
 
 

Abstract    Hydraulic fracturing is a phenomenon in which cracks propagate through the porous medium due to high pore fluid pressure. Hydraulic fracturing appears in different engineering disciplines either as a destructive phenomenon or as a useful technique. Modeling of this phenomenon in isothermal condition requires analysis of soil deformation, crack and pore fluid pressure interactions. In this paper a numerical scheme is presented for analysis of soil stresses and deformations and fluid flow in a coupled manner, which is also capable to detect the initiation of fracture in the medium. Applications of the model are shown by illustrative examples.

 

Keywords    Hydraulic Fracturing, Finite Element Method, Effective Stress Analysis, Mohr-Coulomb Criterion, Hyperbolic Model

 

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