A method and device for normalizing calculation of fluid phase equilibrium parameters in a porous medium

By performing normalized calculations of fluid phase equilibrium parameters within porous media, the problem of the influence of different pore sizes in porous media is solved, enabling accurate calculation of apparent parameters for oil-gas mixture systems and supporting accurate physical property analysis for oil and gas field development.

CN116266256BActive Publication Date: 2026-05-29CHINA PETROLEUM & CHEMICAL CORP +1
2 Cites 0 Cited by

Patent Information

Application Number
CN202111549124.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-12-17
Publication Date
2026-05-29
Estimated Expiration
2041-12-17

AI Technical Summary

Technical Problem

Existing technologies for calculating fluid phase equilibrium parameters in porous media cannot effectively consider the influence of multiple different pore sizes, resulting in calculation results that cannot represent the overall fluid properties within the porous media. Therefore, a scientific normalization calculation method is needed.

Method used

A normalized calculation method for fluid phase equilibrium parameters in porous media is provided. By calculating the normalized oil saturation, gas saturation, molar number of oil and gas phases, and composition of the oil and gas mixture in porous media, a normalized calculation method for apparent pressure, compressibility factor, and mixture composition in porous media is established.

Benefits of technology

It enables accurate normalized calculation of fluid phase equilibrium parameters in porous media, and provides apparent oil saturation, apparent gas saturation, apparent pressure, compressibility factor and mixture composition of oil-gas mixtures in porous media, providing accurate physical property data for oil and gas field development.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The application provides a method for normalizing calculation of fluid phase equilibrium parameters in a porous medium, which comprises: calculating normalized oil saturation and gas saturation in the porous medium; calculating oil phase apparent pressure in the porous medium, gas phase apparent pressure in the porous medium, oil phase compression factor in the porous medium and gas phase compression factor in the porous medium according to oil and gas two-phase molar number normalization; and normalizing oil and gas two-phase mixture composition in each pore size to obtain apparent oil and gas two-phase mixture composition in the porous medium. The application can accurately normalize and calculate apparent oil saturation, apparent gas saturation, apparent oil phase pressure, apparent gas phase pressure, apparent oil phase compression factor, apparent gas phase compression factor, apparent oil phase mixture composition and apparent gas phase mixture composition in an oil and gas mixture system in a multiple-pore medium, and can further calculate oil and gas phase density, surface tension and other parameters, thereby providing accurate oil and gas physical property data for oil and gas field development.
Need to check novelty before this filing date? Find Prior Art