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Experimental device and method for simulating CO2-water-rock reaction under stratum condition

A technology for simulating formations and experimental devices, applied in measuring devices, chemical method analysis, instruments, etc., can solve the problems of not considering the influence of gas impurities, not being able to monitor the pH value in real time, taking liquid in situ, not considering gas dissolution and diffusion, etc. , to achieve the effect of being economically appropriate and convenient for popularization and application

Active Publication Date: 2020-03-13
DALIAN UNIV OF TECH
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Problems solved by technology

[0005] The purpose of the present invention is to provide a CO 2 - The experimental device and method of water-rock reaction solves the problem that the existing experimental device cannot monitor the pH value in real time, take liquid in situ, and measure the change of ion concentration, without considering the influence of gas impurities, and the dissolution of gas during real formation injection, Diffusion problem

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  • Experimental device and method for simulating CO2-water-rock reaction under stratum condition

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[0026] The following describes the present invention in further detail in conjunction with the technical scheme and accompanying drawings. This case is only for illustration and does not limit the scope of application of the present invention. The instruments, devices and raw materials used in the present invention can be purchased through formal commercial channels without any special instruments or materials.

[0027] Such as Figure 1 to Figure 3 As shown, the present invention provides a CO 2 - Experimental setup for water-rock reactions for simulating CO 2 The basic common phenomenon of geological storage and resource utilization——CO 2 -Water-rock interaction, mainly including: high temperature and high pressure in-situ sampling system; temperature, pressure and PH data acquisition system; exhaust gas analysis system; gas-liquid injection system; and reactor system.

[0028] According to the present invention, the high-temperature and high-pressure in-situ sampling sys...

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Abstract

The invention belongs to the technical field of geochemical water-rock reaction processes, and provides an experimental device and method for simulating a CO2-water-rock reaction under a stratum condition. The experimental device comprises a high-temperature and high-pressure in-situ sampling system, a data acquisition system, an exhaust analysis system, a gas-liquid injection system and a reaction kettle system. According to the invention, dynamic change of the temperature, the pressure and the PH along with the time in the reaction process can be monitored in real time; the method can be extensively applied to rock samples with different lithology, carries out deep analysis on the pressure attenuation curve of the rock samples, obtains the gas dissolution diffusion coefficient, represents the gas dissolution diffusion in a mineralization reaction process, and carries out deep exploration on the influence of diffusion on the mineralization reaction in combination with mineral lithofacies analysis. According to the invention, overall general situation analysis can be carried out on water-rock reaction research, deep analysis of the reaction process can also be carried out by utilizing software modeling based on original data, and the overall experiment system does not use special materials and instruments, is economical and appropriate, and is convenient to popularize and apply.

Description

technical field [0001] The invention belongs to the technical field of geochemical water-rock reaction process, and relates to a CO 2 - Experimental device and method for water-rock reaction. Background technique [0002] Among the four carbon fixation mechanisms in CCS (Carbon Capture and Storage) technical geological storage, geochemical storage is the safest in terms of storage safety and durability. Based on the CarbFix storage project in Iceland, study shows that geochemical storage injects CO within 2 years 2 95% of (MATTER J M, STUTE M, SNAEBJORNSDOTTIR S O, et al. Rapidcarbon mineralization for permanent disposal of anthropogenic carbon dioxide emissions[J]. Science, 2016, 352(6291): 1312-4.), breaking people's understanding of geochemical The understanding that the storage time scale is hundreds of thousands of years confirms the effectiveness of geochemical storage. [0003] CO 2 Not only can it be stored in saline water layer, but it can also be injected into ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N31/00
CPCG01N31/00
Inventor 宋永臣陈明坤张毅赵佳飞刘瑜杨明军蒋兰兰
Owner DALIAN UNIV OF TECH
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