An accelerated test method for dynamic dissolution of rocks with supercritical carbon dioxide

Abstract

The invention relates to an accelerated test method for dynamic dissolution of rock by supercritical carbon dioxide, which belongs to the technical field of rock mechanics tests. A carbon dioxide high-pressure plunger pump is used to provide high-pressure conditions (0-40MPa), and a heating system is used to provide high-temperature conditions (0-400°C). , use the provided high temperature conditions to conduct accelerated tests, use the stirring device to provide fluid flow conditions, simulate the reservoir environment in the high temperature and high pressure reactor, and lay the foundation for the rock acidification test to reveal the long-term effects of supercritical carbon dioxide on rocks Mechanism of dynamic erosion. This test adopts the method of accelerated test, which not only achieves the effect of shortening the test time, but also enhances the repeatability of the test, so that the test has enough repeated observation times, and avoids the accident of using equal time for the test.

Description

technical field [0001] The invention relates to an accelerated test method for dynamic dissolution of rock by supercritical carbon dioxide, belonging to the technical field of rock mechanics tests. Background technique [0002] Fossil energy, as the main body of China's energy consumption structure, while promoting rapid economic development, has also caused great damage to the natural environment, which directly leads to the sharpening of the contradiction between my country's economic development and environmental protection. Therefore, looking for alternatives to fossil energy Renewable clean energy has become an important task for social and economic development. Among the many new renewable energy sources, geothermal energy is widely distributed, with huge reserves and continuous and stable energy supply, so it has broad development prospects and potential. According to the origin and storage conditions of geothermal energy, it can be divided into hydrothermal geotherma...

AI Technical Summary

Problems solved by technology

However, due to certain technical difficulties in increasing the upper temperature limit of the stirred reactor, the study of the dynamic dissolution mechanism of supercritical carbon dioxide on rocks lacks necessary equipment and test methods, resulting in the lack of necessary, sufficient and reliable test research data. The theory is not perfect and has no guiding significance for field tests

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