Device and method for analyzing influence of CO2 escape of oil reservoir geological sequestration body on environment

Abstract

The invention discloses a device and method for analyzing the influence of CO2 escape of an oil reservoir geological sequestration body on the environment. The device comprises an oil reservoir sequestration body simulation module, a CO2-to-environment influence simulation module, a CO2 escape evaluation module and a data acquisition module, wherein the oil reservoir sequestration body simulationmodule is used for simulating CO2 diffusion escape and CO2 seepage escape conditions in the sequestration process of CO2 in a stratum; the CO2-to-environment influence simulation module is used for researching and testing the influence rule of CO2 escaped from the oil reservoir sequestration body simulation module on the environment; the CO2 escape evaluation module is used for evaluating a CO2 diffusion escape rate and a CO2 seepage escape rate; and the data acquisition module is used for receiving, processing and operating data of the oil reservoir sequestration body simulation module, the CO2-to-environment influence simulation module and the CO2 escape evaluation module. According to the invention, the escape characteristic of CO2 from the geologic body can be analyzed, the influence on the environment after CO2 escape can also be analyzed, and the device has important significance in CO2 sequestration research; and the device has the advantages of reasonable structure, simple operation, accurate data, high efficiency and practicability.

Description

Technical field [0001] This invention relates to CO 2 The field of geological storage research technology, especially related to a reservoir geological storage body CO 2 Device and method for analyzing environmental impact of escape. Background technique [0002] CO 2 There are generally two types of escape behaviors injected into the reservoir storage body, diffusion escape and seepage escape; the first type of diffusion escape behavior is due to the CO inside the reservoir storage body 2 The concentration is higher than that outside the enclosure, CO 2 The molecules will escape to the storage body in the form of diffusion, and the CO 2 The storage effect is destroyed; the second seepage escape behavior is when the pressure of the storage layer exceeds the breakthrough pressure of the caprock, CO 2 It will escape to the outside of the reservoir with continuous phase seepage, resulting in large-scale escape behavior, which is harmful to CO 2 The storage effect caused serious damage...

AI Technical Summary

Problems solved by technology

Currently about CO 2 Study on escape behavior from reservoir storage and CO 2 The research on soil and water body after escape is carried out with independent experimental devices, and it is difficult for previous experimental devices to simulate CO under reservoir conditions. 2 escape situation, and the escape and impact on the environment cannot be systematically studied, so it is impossible to study CO 2 Quantitative relationship between escape rules and impact on the environment

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