Test simulator for displacement and extraction of natural gas hydrates through CO2

A simulation device and technology for hydrates, which are applied in the fields of fluid production, teaching models, and earthwork drilling, etc., can solve problems such as the inability to realize real-time monitoring of hydrate saturation, and achieve real-time measurement, small calculation amount, and realistic simulation. Effect

Inactive Publication Date: 2014-08-06
QINGDAO INST OF MARINE GEOLOGY
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Problems solved by technology

[0004] The patent number is 2010106056318, which is called a test simulation system for CO2 exploitation of natural gas hydrate. It discloses a test simulati

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  • Test simulator for displacement and extraction of natural gas hydrates through CO2
  • Test simulator for displacement and extraction of natural gas hydrates through CO2
  • Test simulator for displacement and extraction of natural gas hydrates through CO2

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[0030] The present invention will be further explained below in conjunction with the drawings.

[0031] CO in the present invention 2 Replacement mining natural gas hydrate test simulation device, including reactor 29, constant temperature control system, gas injection and liquid injection system, liquid circulation heating system, back pressure control system, vacuum and gas-liquid separation system, gas production online detection system and data acquisition system.

[0032] The constant temperature control system is a constant temperature bathroom 26, and the temperature in the constant temperature bathroom 26 is controlled at -20 to 120°C, and the control accuracy is ±0.1°C.

[0033] The reaction kettle 29 is placed in a constant temperature bathroom 26. The reaction kettle 29 is mounted on a trolley. The reaction kettle 39 can rotate 360° around a rotating shaft 37. Rollers are installed under the trolley and can slide along a fixed track. The reactor 29 can withstand a maximum...

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Abstract

The invention relates to testing apparatus, in particular to a test simulator for displacement and extraction of natural gas hydrates through CO2. The testing apparatus comprises a reaction kettle, a constant temperature control system, a gas injection and liquid injection system, a liquid loop heating system, a return pressure control system, a vacuumization and gas-liquid separation system, a gas generation online detection system and a data acquisition system. Real-time monitoring of saturation of the hydrates is achieved by the adoption of the time domain reflection technique, the testing apparatus is easy and convenient to use and small in calculated quantity, and data supports are provided for accurate discussion of the replacement reaction rate; the gas generation pipeline of the reaction kettle is connected with a gas chromatograph, so real-time measurement of gas generation components can be achieved; the simulation environment is more approximate to the undersea extraction environment.

Description

Technical field [0001] The invention relates to a test device, in particular to a simulation device for the exploitation of natural gas hydrate by using CO2 replacement. Background technique [0002] Natural gas hydrate (abbreviated as hydrate) is widely distributed in the environment of high latitude and extremely low permafrost and deep ocean formation. It has the characteristics of large reserves and high energy density. With the rapid development of the world economy, the consumption of traditional fossil fuels is increasing. On the one hand, it has led to the increasing depletion of global energy, and on the other hand, it has caused the increasing temperature of the atmosphere. Hydrate extraction and reduction of global greenhouse effect have become research hotspots. [0003] Use CO 2 The principle of displacement mining hydrate is: through the guest molecule CO 2 Reduce CH in hydrate 4 The partial pressure of the molecule will CH 4 The molecules are replaced. During the r...

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Application Information

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IPC IPC(8): G09B25/00E21B43/22
Inventor 刘昌岭赵仕俊孙建业刘乐乐
Owner QINGDAO INST OF MARINE GEOLOGY
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