Influence of cold-seep environments on the kinetics of methane hydrate formation

doi:10.1016/j.marpetgeo.2023.106401

IOCAS-IR > 海洋地质与环境重点实验室

	Influence of cold-seep environments on the kinetics of methane hydrate formation
	Zhang, Yitong 1,2,4,5; Xi, Shichuan1,2 ; Du, Zengfeng 1,2,4,5; Luan, Zhendong 1,2,4,5; Zhang, Xin 1,2,3,4,5,6
	2023-09-01
发表期刊	MARINE AND PETROLEUM GEOLOGY
ISSN	0264-8172
卷号	155 页码:9
通讯作者	Zhang, Xin([email protected])
摘要	Methane hydrate (MH) is widely distributed in active deep-sea cold-seep areas. The complex environment of cold seeps influences MH formation. Investigating the effects of cold-seep environments on MH formation can provide an in-depth understanding of the formation mechanism of MH and kinetic process of cold-seep development and evolution. In this study, multiple MH formation experiments were conducted in the laboratory to investigate the effects of a cold-seep environment on the kinetics of hydrate formation. Considering the cold-seep fluid and bottom seawater as the samples, MH was formed in the capillary under the same pressure-temperature conditions as those in cold-seep environments. The entire process of MH formation was recorded by time-series Raman spectra and video, and the results demonstrated the promotion of MH formation by solid particles, especially authigenic carbonates. Compared to 20 min in seawater, the induction time of 2 min in cold-seep fluids indicated promotion of hydrate formation by tiny particles and by its lower salinity. Notably, the reduction in salinity in the cold-seep fluid may be attributed to the dilution effect of pure water produced by hydrate decomposition, indicating the presence of a hydrate memory effect. Overall, our results are in agreement with those of the in situ hydrate formation experiment in a cold-seep environment. A model of hydrate formation in a cold-seep environment has been proposed, which can aid in understanding the kinetics of hydrate formation.
关键词	Methane hydrate Cold seep environment In situ Raman spectroscopy Hydrate formation
DOI	10.1016/j.marpetgeo.2023.106401
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[92058206]; National Natural Science Foundation of China[52001303]; National Natural Science Foundation of China[42221005]; Strategic Priority Research Program, CAS[XDB42040302]; Young Taishan Scholars Program[tsqn201909158]; Key Project of Ocean Research Center, Chinese Academy of Sciences[COMS2020J03]
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:001041851900001
出版者	ELSEVIER SCI LTD
WOS关键词	IN-SITU RAMAN ; AUTHIGENIC CARBONATES ; GAS HYDRATE ; FORMOSA RIDGE ; SEA-FLOOR ; DISSOCIATION ; PHASE ; WATER
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/182681
专题	海洋地质与环境重点实验室深海极端环境与生命过程研究中心
通讯作者	Zhang, Xin
作者单位	1.Chinese Acad Sci, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China 3.Lab Marine Geol, LaoShan Lab, Qingdao 266061, Peoples R China 4.Chinese Acad Sci, CAS Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 5.Chinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res, Qingdao 266071, Peoples R China 6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
第一作者单位	深海极端环境与生命过程研究中心
通讯作者单位	深海极端环境与生命过程研究中心
推荐引用方式 GB/T 7714	Zhang, Yitong,Xi, Shichuan,Du, Zengfeng,et al. Influence of cold-seep environments on the kinetics of methane hydrate formation[J]. MARINE AND PETROLEUM GEOLOGY,2023,155:9.
APA	Zhang, Yitong,Xi, Shichuan,Du, Zengfeng,Luan, Zhendong,&Zhang, Xin.(2023).Influence of cold-seep environments on the kinetics of methane hydrate formation.MARINE AND PETROLEUM GEOLOGY,155,9.
MLA	Zhang, Yitong,et al."Influence of cold-seep environments on the kinetics of methane hydrate formation".MARINE AND PETROLEUM GEOLOGY 155(2023):9.