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Testing method for mechanical property change of natural gas hydrate during decomposition

A test method, natural gas technology, applied in scientific instruments, analytical materials, measuring devices, etc., to achieve the effect of precise control

Active Publication Date: 2014-09-10
SHANDONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of this invention is to propose a new test method for testing the mechanical properties of the hydrate decomposition process, which can effectively solve the decomposition problem caused by the sample transfer process, and the measured results are more reliable and closer to the actual situation

Method used

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  • Testing method for mechanical property change of natural gas hydrate during decomposition
  • Testing method for mechanical property change of natural gas hydrate during decomposition

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Embodiment Construction

[0017] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0018] 1. A test method for natural gas hydrate mechanical properties: it is characterized in that: the steps are as follows:

[0019] 1) Making natural gas hydrate samples. The sample making method has been mentioned in detail in other patents of the same inventor. This method can make samples with specific void ratios according to the needs of experimenters;

[0020] 2) Install the sample and adjust the position of the sample. The installation of the sample includes installing the outer sleeve 3 of the magnetic conductor, installing the upper and lower percolation plates 11, 13, installing the upper pressure anvil 15, and accurately installing the above-mentioned combination on the base of 7. The entire installation and combination process must keep the sample 12, The center lines of the upper and lower seepage plates 11, 13, the upper pressure anvil 15 and the bas...

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Abstract

The invention relates to a testing method for mechanical property of natural gas hydrate, and in particular relates to a testing method for mechanical property change of natural gas hydrate during decomposition. The testing method is characterized in that a hydrate sample is placed in a (super) magnetizer temperature controller, the ambient temperature of the hydrate can be accurately controlled, the practical decomposition condition of the hydrate during extraction can be fully simulated, and the mechanical property change of the hydrate during decomposition can be tested. The method comprises the following steps: sample preparation, selection of the testing method, and data acquisition. The method can be used for simulating to test the mechanical property change of the in-situ formation hydrate.

Description

technical field [0001] The invention relates to a test method for the mechanical properties of natural gas hydrate, in particular to a test method for the change of mechanical properties during the decomposition process of natural gas hydrate. Background technique [0002] Gas hydrates are widely distributed in nature in the slopes of continents, islands, uplifts of active and passive continental margins, polar continental shelves, and deep-water environments in oceans and some inland lakes. Conditions for the formation of natural gas hydrates: low temperature, generally lower than 10°C; high pressure, generally higher than 10 MPa; sufficient natural gas (hydrocarbons, mainly methane) gas source; favorable hydrate occurrence space. The main sources of gas for the formation of gas hydrates are: gas produced by pyrolysis of deep organic matter and migrate upward; gas produced by microbial degradation of organic matter in sediments; gas produced by volcanic action; atmospheric ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00
Inventor 蒋宇静公彬王刚黄娜
Owner SHANDONG UNIV OF SCI & TECH
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