Effects of Multiple Factors on Methane Hydrate Reformation in a Porous Medium

• Published in: ChemistrySelect
• Main Authors: Wang, Pengfei, Yang, Mingjun, Jiang, Lanlan, Zhao, Yuechao, Song, Yongchen
• Other Authors: National Natural Science Foundation of China
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 2017
• Subjects: Methane hydrate
• Online Access: http://dx.doi.org/10.1002/slct.201700754; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fslct.201700754; https://onlinelibrary.wiley.com/doi/full/10.1002/slct.201700754

Abstract The effects of the remaining hydrate saturation (remaining S h ), reformation pressure and methane flow velocity on methane hydrate (MH) reformation in a porous medium were investigated. The results indicate that the presence of residual hydrate affects the hydrate reformation distribution. The remaining S h has a more obvious effect on the hydrate reformation saturation than the pressure and methane flow velocity during the rapid reformation stage. However, in the stable reformation stage, the pressure has the largest effect on the hydrate reformation saturation. In addition, the increases in reformation S h are related to the remaining S h , and the remaining S h has a negative effect on the S h increment. A comparison of the hydrate reformation rates at various times suggests that both reformation pressure and remaining S h affect the hydrate reformation rate. The remaining S h has a more remarkable effect than the reformation pressure. In addition, the maximum hydrate reformation rate is related to the remaining S h , and the maximum hydrate reformation rate will decrease when the level of remaining S h increases.