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Experimental device and experimental method for simulating obvious stratum damage resulted from hydrate decomposition

A technology of hydrate decomposition and hydrate, which is applied in the direction of material inspection, application of stable tension/compression to test material strength, soil material test, etc., can solve the problems of lack of research on control parameters and evolution process, and structural hazards

Inactive Publication Date: 2013-04-03
INST OF MECHANICS CHINESE ACAD OF SCI
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  • Abstract
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  • Application Information

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Problems solved by technology

This kind of disaster will cause serious damage to structures in the seabed, but there is still a lack of research on its control parameters and evolution process

Method used

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  • Experimental device and experimental method for simulating obvious stratum damage resulted from hydrate decomposition
  • Experimental device and experimental method for simulating obvious stratum damage resulted from hydrate decomposition
  • Experimental device and experimental method for simulating obvious stratum damage resulted from hydrate decomposition

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Embodiment Construction

[0029] Such as figure 1 , 2 As shown, the shape of the model box 9 is a cuboid or a cylinder, and the surroundings are sealed to resist the pressure required for hydrate formation and simulate formation stress. The top cover 2 can move up and down as the position where the external force is applied when the experiment needs to provide a pressure greater than 1 atmosphere. , and reserve an opening in the top cover 2 for exhaust during decomposition experiments. Different materials are selected according to different experimental conditions: if tetrahydrofuran hydrate deposits are formed, organic glass materials can be used for direct observation; if methane hydrate deposits are formed, high-strength stainless steel materials are required. The side wall of the model box is coated with heat-insulating paint, so that the side wall has the function of heat insulation from the outside world. In the lower part of the model box is a sediment layer 16 to form a hydrate formation, and ...

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Abstract

The invention discloses an experimental device for simulating obvious stratum damage resulted from the hydrate decomposition, comprising a model box with a top cover. A flow meter, a pore pressure meter, a temperature sensor, a heat source, monitoring equipment and a data acquiring and processing system are arranged in the model box. The invention also provides an experimental method for measuring the phase-change heat conduction at the periphery of the cylindrical hydrate deposit heat source and a method for analyzing the experimental result.

Description

technical field [0001] The invention relates to the field of hydrate decomposition, in particular to an experimental device and method for simulating formation failure caused by hydrate decomposition. Background technique [0002] Natural gas hydrate is an ice-like clathrate crystalline compound composed of water and natural gas under moderately high pressure and moderately low temperature conditions. Gas hydrate is widely distributed in the deep water environment of continents, oceans and some inland lakes, and is an important potential resource. [0003] With the reduction of recoverable oil and gas and the increase of consumption in the world, the urgency of deep sea hydrate exploitation is becoming more and more obvious. The United States, Japan, Canada and other countries have carried out a lot of work on phase equilibrium conditions and exploration methods, and carried out test mining. [0004] Oil and gas exploitation, hydrate exploitation or changes in natural cond...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/24G01N3/08G01N3/12
Inventor 鲁晓兵王淑云张旭辉王爱兰赵京李清平姚海元
Owner INST OF MECHANICS CHINESE ACAD OF SCI