Method for creating a model for fluid flows in a fractured porous multi-layered medium

摘要

The fissured medium is divided into discrete sections by a mesh in which the meshes are centered on the nodes where the fissures intersect. Each node is associated with a volume of the matrix and the flow between each mesh and the associated volume is determined in a semi-permanent flow regime The model simulates interactions between the pressure variations and the flow at the level of a well passing through the medium. The matrix volume associated with each mesh is delimited in each layer by the assembly of points nearest to the node corresponding to the neighboring nodes. Each layer is divided into discrete pixels and the associated matrix volume is determined by the distance of each pixel from the nearest mesh. The transmissivity for each mesh/matrix block pair is determined by considering the pressure varying linearly as a function of the distance of the point being considered from the mesh associated with the block.