Device and method thereof for testing synthesis and decomposition parameters of hydrate sediment

Abstract

The invention discloses a device for testing synthesis and decomposition parameters of hydrate sediment, which comprises a pressure chamber. The inlet end of the pressure chamber is provided with an air inlet flow meter, an injection pump and an ultrasonic transmitting end; the outlet end of the pressure chamber is provided with an ultrasonic receiving end, a gas-liquid separator and an air outlet flow meter; a TDR measurer and a plurality of detection points are arranged in the inner cavity of the pressure chamber along the length direction thereof; and the axial section where each detection point is positioned is provided with a temperature sensor and a pressure sensor. The device and a method thereof in the invention can acquire multiple basic parameters such as stress strain, seepage, heat, wave, content of each component and the like, and can provide different ambient pressures to simulate the pressure in the actual hydrate sediment stratum, wherein the maximum ambient pressure can reach 30MPa. The gas amount of the hydrate sediment in synthesis and decomposition can be measured by the fine flow meter. The device is lighter, has a small volume and is convenient to move; and the device can be conveniently put into other measurement devices such as CT, chromatograph and spectrometer for microcosmic real-time observation.

Description

technical field [0001] The invention relates to the field of hydrate synthesis and decomposition, in particular to a device for testing hydrate sediment synthesis and decomposition parameters and a testing method thereof. 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 ch...

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Problems solved by technology

This kind of disaster will cause serious damage to structures in the seabed, but

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