Natural gas hydrate synthesis and mining simulation experiment system and method

A technology for simulating experiments and hydrates, which is applied in the fields of fluid production, earth-moving drilling, wellbore/well components, etc. It can solve the problems of unstable output pressure, low efficiency, and insufficient precision, so as to improve accuracy and efficiency. , Easy to operate, accurate pressure control effect
CN110761749APending Publication Date: 2020-02-07CHINA HUANENG GRP CO LTD +1
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
CHINA HUANENG GRP CO LTD
Publication Date
2020-02-07

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Abstract

The invention provides a natural gas hydrate synthesis and mining simulation experiment system and method. Combustible ice is synthesized by CH4 gas in a gas storage tank and clear water in a first liquid storage tank, a temperature control box, a backup pressure valve and a piston container form a combustible ice mining experiment system, and influences of the temperature, the pressure and the inhibitor quantity on combustible ice mining are analyzed by collecting the temperature, the pressure and the inhibitor quantity; meanwhile, further detailed analysis and research are conveniently carried out according to the temperature on a sand-filled tube, the internal temperature tested by a pressure probe and the change condition of the pressure; meanwhile, a one-way valve is used for preventing the back suction phenomenon caused by air interference in the experiment system, and the experiment accuracy is improved; and through the backup pressure valve, a fourth pressure gauge, a liquid injection pump and a fifth pressure gauge, precise control over the gas or liquid pressure is realized, pulses are prevented, and the accuracy of measurement and experimental results is improved. The natural gas hydrate synthesis and mining simulation experiment system is simple in structure and convenient to operate, and the experimental process is better controlled.
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Description

technical field

[0001] The invention relates to the field of natural gas hydrate development, in particular to a natural gas hydrate synthesis and exploitation simulation experiment system and an experiment method. Background technique

[0002] Natural gas hydrate is a naturally occurring compound with a cage-type microstructure, and its molecular formula has been confirmed as CH 4 Β·8H 2 O, that is, a methane molecule is surrounded by a cage structure formed by 8 water molecules. "Combustible ice" is its common name, because of its ice-like appearance and structure, and it can burn when exposed to fire. "Combustible ice" is an efficient and clean energy source with a high calorific value. Its combustion produces dozens of times more energy than ordinary fossil fuels of the same quality.

[0003] According to estimates by scientists, the total global resources of combustible ice are about 10 trillion tons of oil equivalent, which can be used by humans for 64,000 years. Onl...

Claims

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