摘要

The authors proposed one new fracture modeling method called the stochastic extended finite element method based on fracture mechanics and the kriging method with multifield trend as an attempt to benefit from the advantage of each method: compliance with fracture mechanics equations and reproduction of fracture observed data respectably. Based on the stochastic extended finite element simulation method, we wrote a fracture modeling system software and built the fracture propagation model and fracture distribution model of Qingshankou Formation in Daqingzi region. Simulation results have shown that the fracture modeling method could improve the characterization precision of fractured reservoir.

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