A New Mesh Generation Strategy and Related Algorithm for Discrete Fracture Model in Naturally Fractured Reservoir Numerical Simulation

2012 ◽  
pp. 63-69
Author(s):  
Junzheng Yang ◽  
Wenwen San ◽  
Honglan Zou ◽  
Guoping Liang
Keyword(s):  
Numerical Simulation ◽  
Mesh Generation ◽  
Fracture Model ◽  
Fractured Reservoir ◽  
Naturally Fractured Reservoir ◽  
Discrete Fracture Model ◽  
Discrete Fracture ◽  
Naturally Fractured

Development of an Embedded Discrete Fracture Model for Multi-Phase Flow in Fractured Reservoir

2014 ◽  
Vol 668-669 ◽  
pp. 1488-1492
Author(s):  
Fang Qi Zhou
Keyword(s):  
Neumann Boundary ◽  
Fracture Model ◽  
Fractured Reservoir ◽  
Discrete Fracture Model ◽  
Matrix Fracture ◽  
Discrete Fracture ◽  
The Matrix ◽  
Multi Phase Flow ◽  
Multi Phase ◽  
Fracture Interface

Considering the discontinuities of the phase saturations and pressure gradients at the matrix-fracture interface, a modified algorithm for the embedded discrete fracture model is proposed. In this algorithm, the exchange rate between fracture and matrix on two sides of the interface are calculated separately. To avoid the problem for defining the physical variables on the matrix grid blocks overlaid by fracture, the Neumann boundary conditions are instead in the calculations of other matrix grid blocks. The numerical examples show that the simulation results of the proposed algorithm agree very well with those of the discrete fracture model. In reservoir with high matrix capillary pressure, the grids must be enough refined in the neighborhood of the matrix-fracture interface to achieve high numerical accuracy.

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