A method for numerical simulation of chemical flooding in heavy oil reservoir

Abstract

The invention relates to a numerical simulation method for chemical flooding of heavy oil reservoirs, comprising the following steps of: collecting parameters; The calculation and treatment method ofthe parameters of the mathematical model which characterizes the mechanism of heavy oil chemical flooding is established. Defining multi-component and multi-phase model; The size, physical propertiesand fluid properties of the core or sand packing model used in the laboratory physical simulation experiment are used to establish the numerical simulation model of heavy oil chemical combination flooding, and modify the parameters of the mathematical model to characterize the mechanism of heavy oil chemical flooding. The 3D reservoir geological model and the actual field production data are imported into the laboratory scale heavy oil chemical combination flooding numerical simulation model, and the 3D heavy oil chemical combination flooding numerical simulation model is established. The invention lays a foundation for predicting the field application effect of chemical combination flooding in heavy oil reservoirs, and provides a theoretical basis for exploring the application of chemicalcombination flooding in heavy oil reservoirs while perfecting the quantitative characterization model of the mechanism of chemical combination flooding in heavy oil reservoirs.

Description

technical field [0001] The invention belongs to the technical field of prediction methods for chemical flooding in heavy oil reservoirs, and in particular relates to a numerical simulation method for chemical flooding in heavy oil reservoirs. Background technique [0002] At present, four technical series of tertiary oil recovery have been formed in the world, namely chemical flooding, gas flooding, thermal flooding and microbial oil recovery. Among them, chemical flooding includes polymer flooding, surfactant flooding, alkaline water flooding and composite flooding technologies. [0003] Polymer flooding is to reduce the oil-water phase viscosity ratio, expand the swept volume, and increase the oil recovery factor by adding polymers to the water phase. The water-soluble viscosity reducer is composed of lipophilic host molecules and hydrophilic guest molecules. Its main mechanism is to use the non-covalent bond interaction (electrostatic attraction, hydrogen bond, Van der ...

AI Technical Summary

Problems solved by technology

However, there is no simulation software for the numerical simulation research method of chemical compound flooding for the combination of polymer and water-soluble viscosity reducer.

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