Natural gas hydrate under-pressure transfer and parameter detection system
A parameter detection and hydrate technology, which is applied in the field of natural gas hydrate transfer under pressure and parameter detection system, can solve the problems of complex operation, poor system versatility, difficulty in core sampling and cutting, etc., and achieve a simple structure and convenient operation Effect
Inactive Publication Date: 2020-08-11
CHINA UNIV OF GEOSCIENCES (WUHAN) +1
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Problems solved by technology
The existing technology has not been able to realize the precise control of low temperature and high pressure at the same time, there are certain difficulties in the sampling and cutting of rock cores, the detection and collection of various performance parameters of rock cores are not comprehensive enough, the operation is complicated, and the generality of the system is not strong
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Embodiment
[0056] A natural gas hydrate pressure transfer and parameter detection system, mainly composed of a core capture and cutting unit, a sampler pressure maintaining unit, a core sample parameter testing unit, a core sample storage unit, a temperature maintenance module, a pressure maintenance module, and a data acquisition module and so on.
[0057] according to figure 1 Assemble each part of the system separately. The working process is as follows:
[0058] Step 1: Close the ball valve 8, open the first pressure tracking port 13, fill the inner cavity of the core capture and cutting unit with brine through the pressure maintenance module, and maintain the pressure at the same high pressure value as that of the pressure holding unit of the sampler. The pressure holding unit of the sampler lifted from the bottom of the well to the surface is docked with the core capture and cutting unit through the third quick joint 15, and the second ball valve 16 is in a closed state at this t...
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The invention discloses a natural gas hydrate under-pressure transfer and parameter detection system. The system comprises a rock core capturing and cutting unit, a sampler pressure maintaining unit,a rock core sample parameter testing unit, a rock core sample storage unit, a temperature maintaining module, a pressure maintaining module and a data acquisition module. The rock core capturing and cutting unit is a main body unit and is in butt joint with the sampler pressure maintaining unit, the rock core sample parameter testing unit and the rock core sample storage unit through quick connectors to complete corresponding functions; the temperature maintaining module maintains the low temperature of the system through a low-temperature water bath and a water jacket; and the pressure maintaining module maintains the high pressure of the system through a double-cylinder constant-speed constant-pressure pump. The modular design is adopted, so that more performance parameter testing modules can be designed to be in butt joint with the rock core capturing and cutting unit; low-temperature and high-pressure precise control can be achieved at the same time, parameters such as temperatureand pressure can be comprehensively monitored and collected, and meanwhile, data is stored, displayed and fed back; and the system is simple in structure and convenient to operate.
Description
technical field [0001] The invention belongs to the technical field of natural gas hydrate development, and in particular relates to a pressure transfer and parameter detection system of natural gas hydrate. Background technique [0002] Natural gas hydrate is a kind of clean energy, which widely occurs in permafrost areas on land and porous sedimentary strata on the seabed at continental margins. extensive attention. [0003] Because natural gas hydrate needs to be stable in high pressure and low temperature environment, otherwise it will decompose. At present, the exploration and development of this potential new energy still faces many challenges. For example, hydrate drilling and exploitation will affect the stability of hydrate in the seabed formation, and then change the physical and mechanical properties of the formation around the well wall where the hydrate occurs, which may cause dynamic changes in the geological and ecological environment of the nearby seabed an...
Claims
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IPC IPC(8): G01N29/07G01N27/04G01N3/24G01N1/28G01N1/08G01K1/02G01D21/02
CPCG01N29/07G01N27/041G01N3/24G01N1/286G01N1/08G01K1/02G01D21/02G01N2291/011G01N2291/023G01N2291/0421G01N2001/2873G01N2001/085G01K13/026G01K3/005G01N29/225G01N33/24
Inventor 卢春华蒋国盛夏留荣张凌张涛郑君刘志超赵慧斌
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)