Simultaneous testing device and method for acoustics and saturation of weakly cemented undiagenetic hydrate

Abstract

The invention relates to an acoustic and saturation synchronous testing device and method for weakly cemented undiagenetic hydrates. The high-pressure reactor has a built-in rubber container, and the rubber container is equipped with rock samples for real-time generation and decomposition of hydrates. The pore pressure support system is connected to the bottom of the high-pressure reactor, and the pore pressure support system is composed of the first pump and the methane gas bottle. Connection composition, the top of the autoclave is connected to a liquid container with a stirrer through a second pump, the upper side of the autoclave is provided with an automatic pressure relief device, and the side wall of the autoclave is equipped with a sensor, And the data is connected to the data processing system; the beneficial effect is: the biggest advantage of the "down air intake" method is that it is possible to simulate the formation and decomposition process of natural gas hydrate in the natural environment and obtain reliable data, including the acoustic and TDR parameters with the confining pressure , saturation changes, and provide a theoretical basis for future gas hydrate exploration.

Description

technical field [0001] The present invention relates to a testing device and method, in particular to a device and method for synchronous testing of weakly cemented undiagenetic hydrate acoustics and saturation, mainly used for real-time monitoring of weakly cemented undiagenetic hydrate acoustic and saturation (TDR) parameters. Real-time measurement and method of confining pressure and saturation changes. Background technique [0002] With the rapid development of the world economy and society, energy security has become an important aspect related to the survival and development of a country. For our country, in recent years, the contradiction between the rapid economic development and the shortage of domestic oil and natural gas supply has become increasingly prominent. On the other hand, in recent years, global climate change has attracted people's attention. The proportion of natural gas as clean energy in the structure is relatively small, and oil, especially coal, is...

AI Technical Summary

Problems solved by technology

[0005] At present, there are few experimental devices for measuring the acoustics and electricity of weakly cemented undiagenetic hydrates, the operation is not simple enough, and many factors have not been considered

For example, the utility model patent application No. 201320327023.4 is an acoustic and electrical study on diagenetic gas hydrates with strong cementation, and does not consider the influence of various parameters of gas hydrates during the formation and decomposition of weakly cemented undiagenetic gas hydrates; the application No. 201220232032.0 utility model patent does not consider the impact of confining pressure on the physical properties of natural gas hydrate

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