Patent ID: 7765091
Filing Date: 2010-07-27
Classification: E21B,G01V,G06F

Abstract:
1. A method for simulating the properties of a fluid-containing subterranean reservoir, the method comprising: (a) providing a reservoir model of a subterranean reservoir partitioned into a grid of fine cells and respective grids of primal coarse cells and dual coarse cells which overlie the grid of fine cells; (b) constructing a first pressure equation comprising 1) a homogenous equation component p (c) solving the primal coarse cell pressure equations for primal coarse cell pressures; (d) constructing pressures in the fine cells which are a combination of products of primal coarse cell pressures and basis functions augmented by the correction term from the p (e) outputting or displaying, through a computer system, the pressure in the fine cells for use as a variable in simulating the properties of the fluid-containing subterranean reservoir.