Patent ID: 9665537
Date: 2017-05-30
CPC Classifications: G01V,G06F

Claim:
1. A method for optimizing the development of a fluid reservoir traversed by a fracture network, wherein the reservoir is discretized into a set of cells, each cell comprising a matrix medium and a fracture medium, and a discrete fracture network is constructed in each cell from observations of the reservoir, comprising: generating a mesh of the discrete fracture network by defining a set of cells for each fracture, each fracture being represented within the discrete fracture network by a polygonal finite plane which is isotropic regarding dynamic properties thereof and the plane comprises at least one intersection segment corresponding to an intersection between a fracture and another fracture of the network, a Voronoi diagram being constructed on each fracture plane by positioning Voronoi cell centers on the at least one intersection segment; generating a mesh of the matrix medium by dividing each cell by an octree technique, wherein a cell is divided into eight cells and cells resulting from a division being themselves split in eight, until each cell resulting from a division comprises a number of fractures below or equal to a given threshold; determining transmissivities between the cells of the mesh of the discrete fracture network by calculating transmissivities between neighboring Voronoi cell centers from a ratio of surface area of neighboring cells to a distance between the neighboring cells, transmissivities between the cells of the mesh of the matrix medium, and transmissivities between cells of the mesh of the discrete fracture medium and cells of the mesh of the matrix medium; using the cells and the transmissivities for generating an image of the fluid reservoir; and using the image of the fluid reservoir and a flow simulator implemented with a computer for optimizing the development of the fluid reservoir.