Differences of Main Enrichment Factors of S1l(1-1)(1) Sublayer Shale Gas in Southern Sichuan Basin

doi:10.3390/en14175472

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	Differences of Main Enrichment Factors of S1l(1-1)(1) Sublayer Shale Gas in Southern Sichuan Basin
	Shi, Xuewen 3,4; Luo, Chao 3,4; Cao GH(曹高辉)2; He, Yifan 4; Li, Yi 4; Zhong, Kesu 4; Jiang WB(江文滨)1,2; Lin M(林缅)1,2
刊名	ENERGIES
	2021-09-01
卷号	14 期号:17 页码:21
关键词	S1l(1-1)(1) sublayer gas content organic pore inorganic pore
DOI	10.3390/en14175472
通讯作者	Cao, Gaohui(caogaohui@imech.ac.cn) ; Jiang, Wenbin(jiangwenbin@imech.ac.cn)
英文摘要	In this study, shale cores from 20 wells in the S1l(1-1)(1) sublayer of Longmaxi Formation buried in shallow shale (<3500 m) and deep shale (>3500 m) in the southern Sichuan Basin, China were collected to compare their pore structures and gas-bearing properties using multiple experiments. Results showed that the deep layer has relatively lower brittle mineral content, which is disadvantageous in terms of the higher requirements it imposes on hydraulic fracturing. Results also showed that the most important factor controlling the differential enrichment of S1l(1-1)(1) shale gas in southern Sichuan Basin is porosity. Moreover, the porosity composition of shallow shale and deep shale has significant differences: the porosity of shallow shale is dominated by organic pores, while for deep shale, both organic and inorganic pores are important. The inorganic pores provide significant storage space for free gas in deep shale; their contribution warrants more attention. We also found that the difference in organic porosity of the shallow and deep shale samples resulted from large differences in pore development ability, while the highest inorganic porosity was concentrated near the optimal mineral composition when the content of quartz plus feldspar plus pyrite was about 70%. This study revealed the primary factor controlling the difference in gas content between shallow and deep shale and detailed the characteristics of microscopic pore structure, providing a basis for the exploration and development of deep shale gas in the Wufeng-Longmaxi Formation in the southern Sichuan Basin.
分类号	Q3
资助项目	National Natural Science Foundation of China[41872163] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA14010304] ; Major Engineering Technology Field Test Project of China National Petroleum Corporation[2019F-31-01]
WOS关键词	SILURIAN LONGMAXI FORMATIONS ; UPPER ORDOVICIAN WUFENG ; ORGANIC-RICH SHALES ; JIAOSHIBA AREA ; PORE STRUCTURE ; CHINA ; ACCUMULATION ; ADSORPTION ; DIFFUSION ; NORTH
WOS研究方向	Energy & Fuels
语种	英语
WOS记录号	WOS:000694079600001
资助机构	National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Major Engineering Technology Field Test Project of China National Petroleum Corporation
其他责任者	Cao, Gaohui ; Jiang, Wenbin
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/87399]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 3.Key Lab Shale Gas Evaluat & Exploitat Sichuan Pro, Chengdu 610051, Peoples R China; 4.Petrochina Southwest Oil & Gas Field Co, Shale Gas Res Inst, Chengdu 610051, Peoples R China;
推荐引用方式 GB/T 7714	Shi, Xuewen,Luo, Chao,Cao GH,et al. Differences of Main Enrichment Factors of S1l(1-1)(1) Sublayer Shale Gas in Southern Sichuan Basin[J]. ENERGIES,2021,14(17):21.
APA	Shi, Xuewen.,Luo, Chao.,曹高辉.,He, Yifan.,Li, Yi.,...&林缅.(2021).Differences of Main Enrichment Factors of S1l(1-1)(1) Sublayer Shale Gas in Southern Sichuan Basin.ENERGIES,14(17),21.
MLA	Shi, Xuewen,et al."Differences of Main Enrichment Factors of S1l(1-1)(1) Sublayer Shale Gas in Southern Sichuan Basin".ENERGIES 14.17(2021):21.