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Natural gas hydrate exploitation simulation device suitable for drum centrifuge

A simulation device and centrifuge technology, applied in the direction of earthwork drilling, wellbore/well components, etc., can solve problems affecting the safety of mining engineering facilities, reservoir strength attenuation, reservoir changes, etc., to achieve convenient simulation and hydrate The generation and reliable effect of experimental data

Active Publication Date: 2022-03-22
DALIAN UNIV OF TECH
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Problems solved by technology

However, natural gas hydrate is a metastable substance. During the production process, changes in temperature and pressure will inevitably cause changes in the structure of hydrate reservoirs, resulting in attenuation of reservoir strength and changes in reservoirs, which in turn affect the development of engineering facilities. safety, and even induce geological disasters such as submarine landslides

Method used

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  • Natural gas hydrate exploitation simulation device suitable for drum centrifuge
  • Natural gas hydrate exploitation simulation device suitable for drum centrifuge
  • Natural gas hydrate exploitation simulation device suitable for drum centrifuge

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Embodiment Construction

[0028] The working process of the device is described below in conjunction with the accompanying drawings:

[0029] A method for simulating natural gas hydrate production suitable for a drum centrifuge, the steps are as follows:

[0030] (1) Open the front sealing cover 12 of the autoclave 9, put the prepared sample into the autoclave 9, install the production well 14 in the production well hole 20, and install the strain gauges 22 around the well wall , the temperature measuring element 25, the pressure sensor 26, etc. are installed inside the high-pressure reactor 9 through the data collection hole, and then the high-pressure reactor 9 is sealed with bolts and sealing rings 11.

[0031] (2) Put the autoclave 9 into the outer casing 1, place the sealing ring 11 in the sealing ring groove 6 on the end face of the outer casing 1, and then connect and seal the outer casing 1 with bolts.

[0032] (3) Install the overall device into the drum groove of the drum centrifuge, and fix...

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Abstract

The invention belongs to the technical field of geotechnical engineering, and provides a natural gas hydrate exploitation simulation device suitable for a drum centrifuge. The natural gas hydrate exploitation simulation device comprises an outer shell, a high-pressure reaction kettle, a visual window, a temperature control system, a pressure control system, an exploitation well and a high-speed camera system, the drum centrifuge is used for creating a high gravity field to simulate the real environment of a natural gas hydrate reservoir, natural gas hydrate depressurization exploitation experiment simulation is achieved, the limitation that the seabed is covered with seawater can be well overcome, the deformation state and the damage process of a soil body under the action of self-weight stress can be visually and accurately displayed, and the experiment result is accurate. And the real stratum response can be reflected.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering, and in particular relates to a natural gas hydrate exploitation simulation device suitable for a drum centrifuge. Background technique [0002] Natural gas hydrate is an ice-like clathrate crystalline compound formed by water and natural gas at low temperature and high pressure. Natural gas hydrate is widely distributed in the outer margins of continents and permafrost zones around the world. It has huge reserves and is expected to replace traditional fossil fuels. A new generation of clean energy. However, natural gas hydrate is a metastable substance. During the production process, changes in temperature and pressure will inevitably cause changes in the structure of hydrate reservoirs, resulting in attenuation of reservoir strength and changes in reservoirs, which in turn affect the development of engineering facilities. safety, and even induce geological disasters such as sub...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/00
CPCE21B49/00
Inventor 宋永臣李洋辉刘涛刘瑜孙翔刘卫国赵佳飞杨明军杨磊凌铮张伦祥
Owner DALIAN UNIV OF TECH
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