Study on the Generation and Decomposition Characteristics of Methane Hydrate in Fully Visible Dual Reactor

doi:10.3969/j.issn.1006-6535.2023.03.009

Abstract

Abstract: In order to clarify the generation and decomposition characteristics of methane hydrate and its influencing factors, a high-pressure fully transparent double-reactor test platform was designed and built to conduct initial and secondary generation and decomposition tests of methane hydrate with high-purity methane and deionized water as the study objects. During the tests, the samples were stirred or not stirred to make a comparison. The experimental results showed that the hydrate generation included four stages: induction, rapid generation, slow generation and stabilization. Stirring could promote the hydrate generation. At the speed of 400 r/min, the lower reactor consumed 93.6% more methane than the upper reactor. Meanwhile, the memory effect was more obvious, and the induction time in the secondary generation was shortened by 62.5 %, and the methane consumption was increased by 254.0% compared with the primary generation. There is much for reference of the study for the development of hydrate.

Key words: methane hydrate, generation, decomposition, influencing factors, stirring, memory effect, induction time

CLC Number:

TE31

Mao Gangtao, Li Zhiping, Wang Kai, Ding Yao. Study on the Generation and Decomposition Characteristics of Methane Hydrate in Fully Visible Dual Reactor[J]. Special Oil & Gas Reservoirs, 2023, 30(3): 73-80.

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