Effect of lithological rhythm on gas production performance via depressurization through a vertical well in a confined hydrate reservoir

doi:10.1016/j.marpetgeo.2020.104696

GIEC OpenIR

	Effect of lithological rhythm on gas production performance via depressurization through a vertical well in a confined hydrate reservoir
	Jin, Guangrong 1; Liu, Jie 1; Liu, Lihua 1; Zhai, Haizhen 1; Wu, Daidai1 ; Xu, Tianfu 2
	2020-12-01
发表期刊	MARINE AND PETROLEUM GEOLOGY
ISSN	0264-8172
卷号	122 页码:21
通讯作者	Liu, Lihua(liulh@ms.giec.ac.cn)
摘要	The lithological characteristics of subsurface formations control the variations in the permeability. Herein, the effect of lithological rhythm on gas production was numerically investigated for depressurization applied in a confined hydrate reservoir. The lithological rhythm structures from simple uniform, positive, and reverse rhythms to complex composite rhythms were designed. The water-to-gas ratio showed that economic feasibility of all rhythms varied with the expansion of the hydrate dissociation region. The depth of high permeability region affected the hydrate dissociation and temperature recovery. Therefore, the gas production rate of positive rhythm was higher than that of the uniform and reverse rhythms, while the reverse rhythm was economically more suitable in the later stages of the production. Furthermore, the gas and water production rates decreased with the increase in the permeability contrast. The number of composite rhythmic layers negligibly affected the gas production rate, while it significantly affected the hydrate saturation distribution, indicating an increasing hydraulic connectivity in the lateral direction that may lead to water breakthrough. Moreover, the rhythmic structures significantly affected the gas production rate and the economic feasibility, and controlled the developed depth of high hydraulic connectivity. Therefore, minor and large seepage pathways could form in a complex rhythm reservoir.
关键词	Natural gas hydrate Lithological rhythm Permeability contrast Rhythm structure Hydraulic connectivity Economic feasibility
DOI	10.1016/j.marpetgeo.2020.104696
关键词[WOS]	STRATIGRAPHIC TEST WELL ; SOUTH CHINA SEA ; BEARING SEDIMENT ; METHANE HYDRATE ; SHENHU AREA ; THERMAL-STIMULATION ; OFFSHORE PRODUCTION ; NANKAI TROUGH ; PERMEABILITY ; STABILITY
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[41776071] ; National Natural Science Foundation of China[41602255] ; Guangdong MEPP Fund[GDOE[2019]A41] ; Guangdong MEPP Fund[GDOE [2019]A39] ; Foundation of the CAS Key Laboratory of Gas Hydrate[E0290207] ; Foundation of the CAS Key Laboratory of Gas Hydrate[y807jd1001] ; Foundation of the CAS Key Laboratory of Gas Hydrate[y807je1001] ; Institution of South China Sea Ecology and Environmental Engineering, CAS[ISEE2018Y1303]
WOS研究方向	Geology
项目资助者	National Natural Science Foundation of China ; Guangdong MEPP Fund ; Foundation of the CAS Key Laboratory of Gas Hydrate ; Institution of South China Sea Ecology and Environmental Engineering, CAS
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000581551200064
出版者	ELSEVIER SCI LTD
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/34893
专题	中国科学院广州能源研究所
通讯作者	Liu, Lihua
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Gas Hydrate, Guangzhou 510640, Peoples R China 2.Jilin Univ, Key Lab Groundwater Resources & Environm, Minist Educ, Changchun 130021, Peoples R China
第一作者单位	中国科学院广州能源研究所
推荐引用方式 GB/T 7714	Jin, Guangrong,Liu, Jie,Liu, Lihua,et al. Effect of lithological rhythm on gas production performance via depressurization through a vertical well in a confined hydrate reservoir[J]. MARINE AND PETROLEUM GEOLOGY,2020,122:21.
APA	Jin, Guangrong,Liu, Jie,Liu, Lihua,Zhai, Haizhen,Wu, Daidai,&Xu, Tianfu.(2020).Effect of lithological rhythm on gas production performance via depressurization through a vertical well in a confined hydrate reservoir.MARINE AND PETROLEUM GEOLOGY,122,21.
MLA	Jin, Guangrong,et al."Effect of lithological rhythm on gas production performance via depressurization through a vertical well in a confined hydrate reservoir".MARINE AND PETROLEUM GEOLOGY 122(2020):21.