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Testing device for natural gas hydrate phase equilibrium in marine sediment and method thereof

A seabed sediment and testing device technology, which is applied to the field of natural gas hydrate phase balance testing devices in seabed sediments, can solve the problems of no natural gas hydrate phase balance test, no natural gas hydrate phase balance data, etc., and achieves a simple structure, Simple operation and high precision effect

Inactive Publication Date: 2010-04-28
INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

At present, there is no phase equilibrium test data of gas hydrate in unsaturated sediments, let alone the phase equilibrium data of gas hydrate under the control of suction in unsaturated sediments

Method used

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  • Testing device for natural gas hydrate phase equilibrium in marine sediment and method thereof
  • Testing device for natural gas hydrate phase equilibrium in marine sediment and method thereof

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Experimental program
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Embodiment Construction

[0075] Below in conjunction with accompanying drawing and embodiment describe in detail:

[0076] 1. Device

[0077] Depend on figure 1 It can be seen that the test device mainly includes a high-pressure reaction vessel 10, a hydraulic vessel 20, a gas-water separation vessel 30, the first and second piston pumps 41, 42, a vacuum pump 50, a liquid flow meter 60, a gas supply device 70, a constant temperature device 80 and data acquisition system 90;

[0078] Its connection relationship is:

[0079] The lower part of the high-pressure reaction vessel 10 is connected to the lower part of the hydraulic vessel 20 through the sixth valve V6 and the liquid flow meter 60;

[0080] The upper part of the high-pressure reaction vessel 10 is connected to the upper part of the gas-water separation vessel 30 through the seventh valve V7;

[0081] The gas-water separation container 30 top links to each other with the 2nd piston pump 42 again, and the 2nd piston pump 42 regulates the gas...

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Abstract

The invention discloses a testing device for natural gas hydrate phase equilibrium in marine sediment and a method thereof and relates to the testing technology for natural gas hydrate in marine sediment. The testing device mainly comprises a high-pressure reaction vessel (10), a hydraulic container (20), a gas-water separator (30), a first and a second piston pump (41, 42), a vacuum pump (50), a liquid quantity meter (60), a gas feeder (70), a thermostatic apparatus (80) and a data acquiring system (90). The invention realizes the simulation of forming and disintegrating process of gas hydrate in marine sediment and the testing of phase equilibrium relation. The device has simple structure, high precision, excellent stability and convenient operation, without high skill demand to test clerk.

Description

technical field [0001] The invention relates to an experimental testing technology for natural gas hydrate in seabed sediments, in particular to a phase balance test device and method for natural gas hydrate in seabed sediments. Background technique [0002] Natural gas hydrate is methane (CH 4 ) and other natural gas molecules are sucked into the gaps of the cage-shaped water molecular cluster structure under certain pressure and temperature conditions, thereby forming a solid substance. As a strategic alternative energy source, natural gas hydrate has great commercial development value and is expected to occupy a major position in the energy consumption structure of this century. With the increasing shortage of oil and natural gas resources, the development of natural gas hydrate, a new alternative energy source, is particularly urgent. At the same time, the unreasonable development of gas hydrates will cause geological landslides on the seabed and a large amount of meth...

Claims

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Application Information

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IPC IPC(8): G01N25/12G01N1/28
Inventor 魏厚振颜荣涛韦昌富吴二林陈盼
Owner INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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