Experiment device for measuring physical property of natural gas hydrate

Abstract

The invention discloses an experiment device for measuring a physical property of a natural gas hydrate, relating to the development field of natural gas hydrates. Specifically, the experiment deviceis an indoor experiment device for measuring specific parameters in generation and decomposition of the natural gas hydrate. The device comprises a gas supply system, a liquid supply system, an analogsystem and a monitor system. In the device, an insulated, transparent sand filling tube is used as a main body of the analog system, the gas supply system and the liquid supply system feed natural gas and water to the analog system so as to form the natural gas hydrate, and the monitor system collects parameters of temperature, pressure, physical property, resistance and other normal parameters of the natural gas hydrate in the whole generation and decomposition process of the natural gas hydrate. The experiment device stimulates the natural gas hydrate in a three-dimensional manner, and cansimulate the saturation of multiple sands and natural gas hydrates, thereby being capable of guiding the research of the physical property of the natural gas hydrate.

Description

technical field [0001] The invention discloses an experimental device for measuring physical properties of natural gas hydrate, relates to the field of natural gas hydrate development, in particular to an indoor experimental device for measuring physical property parameters in the process of simulating the formation and decomposition of natural gas hydrate. Background technique [0002] Natural gas hydrate (NGH for short) is a non-stoichiometric clathrate compound formed by natural gas and water at a certain low temperature and high pressure, also known as "combustible ice". 1m 3 Natural gas hydrate can contain 164m 3 methane gas and 0.8m 3 of water. "Combustible ice" is a secondary product of natural gas, and its application range is roughly the same as that of natural gas. It is a typical oil substitute. "Combustible ice" is extremely flammable. Under the same conditions, the energy generated by the combustion of "combustible ice" is dozens of times higher than that of...

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Problems solved by technology

[0005] CN101710088A discloses a method and device for testing the formation and decomposition of natural gas hydrate. A simulation experiment is carried out on natural gas hydrate through a one-dimensional sand-filled resistivity model tube, but the material of the sand-filled resistivity model tube is stainless steel, and the measuring electrode is inserted into the natural gas hydrate The inside of the sand body will have a certain impact on the accuracy of the experimental results, and the measurement method is only the resistivity method, which is relatively simple

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