In Situ Heating-Induced Pore Structure Evolution in Low-Medium-Maturity Paleogene Lacustrine Shale, Bohai Bay Basin, China: Insights from Integrated Experimental and Numerical Approaches

doi:10.1021/acs.energyfuels.4c01956

GIG OpenIR

	Bai, Guoshuai 1,2,3; Chen, Guohui 1,2; Cai, Zhongxian 3; Jiang, Shu 1,3; Wang, Feng 4,5; Mo, Lan 1,2,3; Yan, Guowei 1,2,3; Zhang, Yuying 6; Li, Jinbu 7; Tian, Shansi 8
	In Situ Heating-Induced Pore Structure Evolution in Low-Medium-Maturity Paleogene Lacustrine Shale, Bohai Bay Basin, China: Insights from Integrated Experimental and Numerical Approaches
刊名	ENERGY & FUELS
ISSN号	0887-0624
	2024-07-17
卷号	38 期号:15 页码:14036-14051
DOI	10.1021/acs.energyfuels.4c01956
语种	英语
WOS研究方向	Energy & Fuels ; Engineering
摘要	The effective development of shale reservoirs with low to medium maturity necessitates a comprehensive understanding of pore evolution dynamics during in situ heating. This study investigated these dynamics through experimental analysis and numerical simulation using shale samples selected from the lower submember of the fourth member of the Paleogene Shahejie Formation (Sha4 Member) in the Damintun Sag, Bohai Bay Basin, China. The results indicate that the evolution of organic and inorganic pores in shale is predominantly influenced by hydrocarbon generation, clay mineral transformation, and dissolution. Organic pores are mainly micropores (<25 nm) and small pores (25 to 100 nm), while inorganic pores are predominantly small pores and mesopores (100 to 1000 nm). From low to high maturity stages, shale porosity and pore volume initially increase significantly & horbar;by 209.6 and 616.2%, respectively & horbar;followed by a decrease of 8.6 and 19.5%. When the maturity Easy % R-0 is 1.1%, the contribution of organic porosity to the total porosity could reach as high as 84.9%. After 1860 days of heating, the OM maturity of the shale within the hexagonal well network of the lower submember of Sha4 Member reaches 1.1%, and the shale porosity reaches 6.6%. Continuous heating until 2400 days results in OM maturity exceeding 1.7%, but the shale porosity does not significantly increase due to heating. Therefore, 1860 days can be considered as the optimal heating duration for enhancing shale reservoirs. These findings are helpful for understanding the effect of in-situ heating on reservoir modification and formulating effective in situ heating schemes.
WOS记录号	WOS:001272034600001
收录类别	SCI
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.gig.ac.cn/handle/344008/78184
专题	中国科学院广州地球化学研究所
通讯作者	Chen, Guohui; Cai, Zhongxian
作者单位	1.China Univ Geosci, Key Lab Tecton & Petr Resources, Minist Educ, Wuhan 430074, Peoples R China 2.Nepu Sanya Offshore Oil & Gas Res Inst, Sanya 572000, Peoples R China 3.China Univ Geosci, Sch Earth Resources, Wuhan 430074, Peoples R China 4.PetroChina Coalbed Methane Co Ltd, Beijing 100028, Peoples R China 5.Natl Engn Ctr Coalbed Methane Explorat & Utilizat, Beijing 100028, Peoples R China 6.Northeastern Univ, Sch Resources & Civil Engn, Shenyang 110819, Peoples R China 7.Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China 8.Northeast Petr Univ, Inst Unconvent Oil & Gas, Daqing 163318, Peoples R China
推荐引用方式 GB/T 7714	Bai, Guoshuai,Chen, Guohui,Cai, Zhongxian,et al. In Situ Heating-Induced Pore Structure Evolution in Low-Medium-Maturity Paleogene Lacustrine Shale, Bohai Bay Basin, China: Insights from Integrated Experimental and Numerical Approaches[J]. ENERGY & FUELS,2024,38(15):14036-14051.
APA	Bai, Guoshuai.,Chen, Guohui.,Cai, Zhongxian.,Jiang, Shu.,Wang, Feng.,...&Tian, Shansi.(2024).In Situ Heating-Induced Pore Structure Evolution in Low-Medium-Maturity Paleogene Lacustrine Shale, Bohai Bay Basin, China: Insights from Integrated Experimental and Numerical Approaches.ENERGY & FUELS,38(15),14036-14051.
MLA	Bai, Guoshuai,et al."In Situ Heating-Induced Pore Structure Evolution in Low-Medium-Maturity Paleogene Lacustrine Shale, Bohai Bay Basin, China: Insights from Integrated Experimental and Numerical Approaches".ENERGY & FUELS 38.15(2024):14036-14051.