A low-temperature and high-pressure control device for X-ray CT equipment to observe hydrate formation and decomposition characteristics

Abstract

The invention relates to a low-temperature high-pressure control device for observing aquo-complex generation and decomposition characteristics through an X-ray CT device, and belongs to the field of oil and gas production scientific research apparatuses. A reaction still has design pressure of 0-10 MPa and design temperature of 268-288 K, and the temperature and pressure conditions of aquo-complex generation and stable existence are met. The temperature of the reaction still is controlled through the upper end and the lower end of a semiconductor refrigerating element, noise does not exist, the acting speed is high, reliability is high, and operation is convenient. The reaction still is composed of an inner pipe and an outer pipe, wherein the inner pipe is made from titanium alloy and is mainly used for heat conduction, and the outer pipe is made from polyimide belonging to a low-heat-conductivity material and is mainly used for heat preservation and pressure preservation; according to the characteristics, the heat conduction and the heat preservation and pressure preservation are controlled independently and can be more easily controlled in the terms of engineering. The low-temperature high-pressure control device can be put on a carrying table of the CT device and generate aquo-complex in situ; through the three-dimensional imaging of the CT device, the generation and decomposition characteristics of aquo-complex can be visually studied.

Description

technical field [0001] The invention relates to a low-temperature and high-pressure control device for X-ray CT equipment to observe the formation and decomposition characteristics of hydrates, belonging to the field of scientific research instruments for oil and gas exploitation. Background technique [0002] With the consumption of conventional oil and gas resources, human development will face the depletion of oil and gas resources, and global economic development will face severe challenges. People are beginning to explore new alternative energy resources on a global scale. Since the 1990s, a large number of natural gas hydrate deposits have been discovered in various countries in the world. According to statistics, the carbon storage in natural gas hydrate deposits accounts for more than half of the total organic carbon resources on the earth, which is about the same as that of all fossil fuels such as coal and oil. Twice the amount of carbon contained in natural gas co...

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Problems solved by technology

[0004] Due to the harsh conditions of low temperature and high pressure where hydrates are stable, it is difficult to generate hydrate samples in situ on CT equipment. In order to solve this problem, the present invention designs a set of reaction devices that can be used for X-ray CT imaging for visualization Study the characteristics of hydrate formation and decomposition

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