Experimental test device and test method for salt precipitation concentration of high-temperature and high-pressure real formation water

Abstract

The invention provides an experimental test device for the salt precipitation concentration of high-temperature and high-pressure real formation water. The device comprises three constant-pressure and constant-speed pumps, five pressure gauges, five stop valves, deionized water, three intermediate containers, an observation container, a self-heating insulating layer, an explosion-proof steel sleeve, a temperature sensor, a solid particle feeder, a nitrogen cylinder, three four-way valves, a vacuum pump, a vacuum pressure gauge, two pressure limiting valves, a gas pressure buffer, two measuring cylinders with rubber plugs, triethylene glycol, anhydrous calcium chloride, two electronic scales, a camera, an air compressor, a gas buffer storage tank, a constant temperature box and a constant temperature heating system. According to the invention, formation water salt precipitation concentration testing in the process of burying carbon dioxide in the underground salt water layer can be realized, reliable and accurate experimental results can be obtained, and basic data can be provided for formulating formation water salt precipitation prevention and control countermeasures in the process of burying carbon dioxide in the underground salt water layer, so that formation water salt precipitation time is delayed, salt precipitation damage degree is reduced, and the carbon dioxide burying cost is reduced.

Description

Technical field [0001] The present invention belongs to the field of carbon dioxide geological bucket, and in particular, the present invention relates to an epihydrate concentration test test device and test method for formation water in the process of depositing carbon dioxide in the ground water layer. Background technique [0002] Carbon dioxide is one of the main gases that produce a greenhouse effect, and the global warming problems are increasingly received by countries around the world. According to China's latest carbon dioxide reduction plan: China is striving to achieve peak 2030 years ago, strive to achieve carbon neutralization 2060 years ago. It is well known that carbon dioxide capture and geological burying is one of the most direct and most effective, most effective in the atmosphere, mostly directly recognized. Because underground salt water layers are widely distributed, carbon dioxide has huge potential, so the underground salt water layer has been recognized ...

AI Technical Summary

Problems solved by technology

The crystallization method cannot be used to determine the concentration of salt precipitation in the underground saline layer under specific temperature and pressure conditions (formation water temperature, pressure)

Therefore, the existing experimental methods are not suitable for testing the concentration of salt evolution in formation water during the process of sequestering carbon dioxide in underground saline aquifers.

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