METHODS OF FORECASTING AND ANALYSING GAS-CONDENSATE FLOWS INTO A WELL

摘要

This invention relates to methods for forecasting or analysing condensate production from a fractured formation. In particular, the invention relates to the effective use of multi-component models for forecasting and analysis. A method of deriving gas-condensate flow into a wellbore via a vertical fracture, comprises deriving production performance data for the flow; deriving a multi-component, gas- condensate fluid flow model for evaluating the inflow to a wellbore via a fracture; and performing a multi-variable non-linear minimization of the production performance data with the flow model so as to derive the gas-condensate flow into the wellbore, wherein the production performance data are derived from measured and/or calculated input values with derivation of multi-component two-phase mixtures with phase transition and hydrodynamic considerations taken together and separately; 2D geometry of the fracture for any shape; 2D fluid flow inside the fracture; and 3D fluid flow in the formation matrix.