Fluctuation of fracturing curves indicates in-situ brittleness and reservoir fracturing characteristics in unconventional energy exploitation

doi:10.1016/j.energy.2022.124043

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Fluctuation of fracturing curves indicates in-situ brittleness and reservoir fracturing characteristics in unconventional energy exploitation
	Sun, Fuqiang 1,2; Du, Shuheng 1,2; Zhao, Ya-Pu 1,2
刊名	ENERGY
	2022-08-01
卷号	252 页码:8
关键词	Brittleness index Data -driven optimization Fracturing curve Micro-seismic data Unconventional reservoir Ashby plots
ISSN号	0360-5442
DOI	10.1016/j.energy.2022.124043
通讯作者	Zhao, Ya-Pu(yzhao@imech.ac.cn)
英文摘要	Reservoir brittleness is a key index to evaluate the fracability and to predict the fracturing characteristics in unconventional energy exploitation. Traditional brittleness indices could only be derived from labo-ratory experiments, which are far from the field conditions and may lead to deviations. In this paper, a fracturing-curve based in-situ brittleness evaluation method is proposed and the in-situ brittleness of Woodford Shale is derived under field stress and temperature conditions. Based on the analysis of real-time micro-seismic data, it is confirmed that the real-time fracturing characteristics can be known by observing the fluctuations in the fracturing curves. Results showed that the in-situ brittleness is much lower than that derived in laboratory experiments. About 78% of micro-seismic events happen at the extreme value and the fastest fluctuation of the fracturing curve. These provide guidance for accurate formulation and real-time optimization of exploitation scheme. (c) 2022 Elsevier Ltd. All rights reserved.
资助项目	National Natural Science Foundation of China (NSFC)[12032019] ; National Natural Science Foundation of China (NSFC)[41902132] ; National Natural Science Foundation of China (NSFC)[11872363] ; PetroChina Innovation Foundation[2019D-5007-0214] ; Chinese Academy of Sciences (CAS) through the CAS Key Research Program of Frontier Sciences[QYZDJ-SSW-JSC019] ; CAS Strategic Priority Research Program[XDB22040401]
WOS关键词	TENSILE-STRENGTH ; SHALE ; TOUGHNESS ; MECHANICS ; PRESSURE ; ROCKS
WOS研究方向	Thermodynamics ; Energy & Fuels
语种	英语
WOS记录号	WOS:000800399600009
资助机构	National Natural Science Foundation of China (NSFC) ; PetroChina Innovation Foundation ; Chinese Academy of Sciences (CAS) through the CAS Key Research Program of Frontier Sciences ; CAS Strategic Priority Research Program
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/89489]
专题	力学研究所_非线性力学国家重点实验室
通讯作者	Zhao, Ya-Pu
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Sun, Fuqiang,Du, Shuheng,Zhao, Ya-Pu. Fluctuation of fracturing curves indicates in-situ brittleness and reservoir fracturing characteristics in unconventional energy exploitation[J]. ENERGY,2022,252:8.
APA	Sun, Fuqiang,Du, Shuheng,&Zhao, Ya-Pu.(2022).Fluctuation of fracturing curves indicates in-situ brittleness and reservoir fracturing characteristics in unconventional energy exploitation.ENERGY,252,8.
MLA	Sun, Fuqiang,et al."Fluctuation of fracturing curves indicates in-situ brittleness and reservoir fracturing characteristics in unconventional energy exploitation".ENERGY 252(2022):8.