Natural gas hydrate deposit dynamic triaxial mechanic-acoustic-electrical synchronous test experimental device and method

A hydrate sediment, dynamic triaxial mechanics technology, applied in the application of repetitive force/pulse force to test the strength of materials, the use of sonic/ultrasonic/infrasonic waves to analyze solids, material resistance, etc. And other issues

Active Publication Date: 2013-09-25
PETROCHINA CO LTD
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Problems solved by technology

The above experimental devices and methods are all used to study the mechanical properties of hydrates under static loads, but the disadvantage is that they cannot simulate the mechanical response characteristics of hydrate sediments unde

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  • Natural gas hydrate deposit dynamic triaxial mechanic-acoustic-electrical synchronous test experimental device and method
  • Natural gas hydrate deposit dynamic triaxial mechanic-acoustic-electrical synchronous test experimental device and method
  • Natural gas hydrate deposit dynamic triaxial mechanic-acoustic-electrical synchronous test experimental device and method

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Embodiment Construction

[0043] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings.

[0044] Such as figure 1 As shown, the experimental device for simultaneous testing of dynamic triaxial mechanics-electricity-acoustics of gas hydrate deposits (that is, the experimental device for simultaneous testing of electrical-acoustic-mechanical properties of gas hydrate deposits) includes: a triaxial pressure chamber, The triaxial pressure chamber is arranged on the base 30, and the triaxial pressure chamber includes an upper end cover 7, a lower end cover 4 and a cylinder 5, and the cylinder 5 is provided with an upper indenter 8 and a lower indenter 20 for loading the sample 6 , the sample 6 is placed between the upper indenter 8 and the lower indenter 20, the lower indenter 20 is fixed on the lower vertical shaft 29, th...

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Abstract

The invention provides a natural gas hydrate deposit dynamic triaxial mechanic-acoustic-electrical synchronous test experimental device, and a test method. The natural gas hydrate deposit dynamic triaxial mechanic-acoustic-electrical synchronous test experimental device comprises an acoustic wave receiving device, an acoustic wave transmitting device, and a resistivity testing device. The natural gas hydrate deposit dynamic triaxial mechanic-acoustic-electrical synchronous test experiment method comprises the steps that: step A, a hydrate sample is synthesized; step B, the synthesized hydrate sample is subjected to dynamic loading, and electric-acoustic-mechanical property tests are simultaneously carried out, until the sample is subjected to shearing damage. The invention provides a mechanical response characteristic research of indoor hydrate deposit under dynamic load. With the device and the method, mechanical, electrical, and acoustic parameter synchronous testing of hydrate deposit under dynamic load can be realized. With the test data, a relationship between mechanical parameters and wave velocity can be obtained by fitting.

Description

technical field [0001] The invention relates to an experimental device and method for dynamic triaxial mechanical-electrical-acoustic simultaneous testing of natural gas hydrate deposits, the main function of which is to study the mechanical response of natural gas hydrate deposits and permafrost formations under longitudinal waves and external dynamic loads characteristic. Background technique [0002] Since the beginning of the 21st century, with the reduction of recoverable oil and gas resources and the increase of consumption, the exploration and development of unconventional energy such as natural gas hydrate has been officially put on the agenda. Because the hydrate reservoirs in the actual nature are in a dynamic environment, such as earthquakes, sea level rises and even human disturbances (drilling and mining), etc. Therefore, the mechanical properties of hydrate-bearing formations, especially the mechanical properties of hydrate formations under dynamic loads, are ...

Claims

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Application Information

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IPC IPC(8): G01N3/36G01N27/04G01N29/07
Inventor 李实宁伏龙马德胜蒋国盛陈兴隆余义兵张可刘力俞宏伟李军
Owner PETROCHINA CO LTD
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