Patent ID: 8798970
Filing Date: 2014-08-05
Classification: E21B,G01V,G06F

Abstract:
1. A method of predicting an amount of production from a fractured reservoir performed by a computer for predicting the amount of production from the fractured reservoir, the computer including a memory containing instructions adapted to cause the computer to operate as a fracture network model generating unit, a fracture network flow model generating unit and a production predicting unit, the method comprising: (a) generating, by the computer, a fracture network model using fracture characteristic information, by the fracture network model generating unit, the fracture network model including discrete fractures; (b) generating, by the computer, a flow model for representing flow paths for a fluid between the discrete fractures using a 2-dimensional finite difference method by the fracture network flow model generating unit; and (c) predicting, by the computer, the amount of production from the fractured reservoir using the flow model by the production predicting unit, wherein the generating of the flow model comprises, (b1) identifying intersecting discrete fractures intersecting each other from among the discrete fractures; (b2) transforming the intersecting discrete fractures into 2-dimensional finite difference method grid squares; and (b3) obtaining intersection block information relating to interconnected grid squares, and wherein the transforming comprises, computing an optimal number of grid squares for each of the intersecting discrete fractures in consideration of an average size of the intersecting discrete fractures; and determining a size of a grid square by using the computed optimal number of grid squares.