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Natural gas hydrate rock mechanical triaxial tester

A triaxial test, rock mechanics technology, used in measuring devices, using stable tension/pressure to test the strength of materials, scientific instruments, etc., can solve problems such as difficulty in obtaining

Inactive Publication Date: 2012-07-11
CHINA NAT OFFSHORE OIL CORP +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the stability of gas hydrate requires a specific temperature and pressure environment, no equipment has been developed for the mechanical properties of gas hydrate sediments. Conventional rock mechanics triaxial experiment techniques and equipment are difficult to obtain and maintain undisturbed hydrate samples for triaxial testing. Intensity and Sonic Measurements

Method used

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  • Natural gas hydrate rock mechanical triaxial tester
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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited to the following embodiments.

[0019] The structural representation of the gas hydrate rock mechanics triaxial test device of the present invention is as follows figure 1 As shown, the marks in the figure are as follows: 1100KN load sensor, 2 moving beam, 3 heat shield, 4 piston, 5 upper cover, 6 sealing ring b, 7 air outlet, 8 cylinder, 9 sample upper pressure seat, 10 Sample lower pressure seat, 11 base, 12 linear guide rail, 13, 16 locking block, 14 sample upper pressure pad, 15 sample lower pressure pad, 17 oil inlet hole, 18 air inlet hole, 19 sealing ring a.

[0020] The natural gas hydrate rock mechanics triaxial test device of the present invention comprises a closed pressure chamber composed of a cylinder body 8, a base 11 and an upper cover 5; the base 11 is placed on two linear guide rails 12 for easy movement; the bas...

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Abstract

The invention discloses a natural gas hydrate rock mechanical triaxial tester. The tester comprises a closed pressure chamber composed of a cylinder body, a pedestal and an upper cover; the pedestal is provided with at least one oil inlet, at least one gas inlet and at least two sonic line connection holes; the upper part of the cylinder body is provided with at least one gas inlet; the upper cover is provided with a piston; the piston is connected with a mobile crossbeam on the outside of the closed pressure chamber; a lower sample pressing seat and an upper sample pressing seat which correspond with each other are arranged in the cavity of the closed pressure chamber; the upper sample pressing seat corresponds with the position of the piston, and the lower sample pressing seat is fixed on the pedestal; and sound probes are arranged in the upper sample pressing seat and the lower sample pressing seat.

Description

technical field [0001] The invention relates to an indoor test device for rock mechanics, in particular to a triaxial test device for natural gas hydrate rock mechanics. Background technique [0002] Natural gas hydrate is a green and clean energy with abundant reserves and high energy density. With the rapid development of the world economy, oil and gas resources are consumed in large quantities. The total energy of natural gas hydrates in the world is about 2 to 3 times that of coal, oil and gas combined, which is of great significance for alleviating the shortage of oil and gas resources. [0003] Natural gas hydrate is an ice-like, cage-type crystalline compound composed of natural gas and water under certain temperature and pressure conditions. It is widely distributed on 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. In the 1960s, after Sovi...

Claims

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Application Information

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IPC IPC(8): G01N3/08G01N3/02
Inventor 李清平程远方周建良孙晓杰郝庆泽刘彬李令东崔青赵寿强白玉湖艾传志姚海元程兵余敏
Owner CHINA NAT OFFSHORE OIL CORP
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