Study of the effects of hydraulic fractures on gas and water flow in shale gas reservoirs

doi:10.1080/15567036.2019.1679916

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-)

	Study of the effects of hydraulic fractures on gas and water flow in shale gas reservoirs
	Wan YJ ; Chen ZY; Shen WJ (沈伟军); Kuang ZX ; Liu XH ; Guo W; Hu Y
刊名	Energy Sources, Part A: Recovery Utilization and Environmental Effects
	2019-10
页码	1-12
关键词	Shale gas reservoir hydraulic fracture sensitivity analysis gas desorption water retention gas production
ISSN号	1556-7036
DOI	10.1080/15567036.2019.1679916
通讯作者	Shen, Weijun(wjshen763@imech.ac.cn)
英文摘要	Horizontal drilling and multi-stage hydraulic fracturing are the two key technologies for the successful development of shale gas reservoirs. However, there exist large uncertainties in optimizing hydraulic fracturing which affects water retention into shale matrix and gas productivity. In this work, a basic reservoir model with six-stage hydraulic-fracturing treatment was constructed to understand water retention and gas production in shale gas reservoirs. Gas diffusion, gas desorption, Darcy flow as well as non-Darcy flow were considered in this model. Then, a sensitivity study was performed to investigate the effects of hydraulic fractures on water retention and gas conductivity. The results indicate that only 34% of the fracturing water could be recovered back to the surface, and most of them remain in shale formations to interfere with gas production. The increase of fracture half-length, fracture width, fracture permeability, and fracture conductivity will reduce water retention while water retention in shale matrix will increase with the increasing of fracture spacing and fracture number. This work can provide a better understanding of the effects of hydraulic fractures on gas and water flow so as to optimize the hydraulic-fracturing treatment in shale gas reservoirs.
分类号	Q4
资助项目	National Natural Science Foundation of China[11802312] ; National Natural Science Foundation of China[U1762216] ; Open Fund of State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation (Southwest Petroleum University)[PLN201810]
WOS关键词	ADSORPTION ; PERFORMANCE ; MECHANISM
WOS研究方向	Energy & Fuels ; Engineering ; Environmental Sciences & Ecology
语种	英语
WOS记录号	WOS:000490693700001
资助机构	National Natural Science Foundation of China ; Open Fund of State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation (Southwest Petroleum University)
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/80460]
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.PetroChina Research Institute of Petroleum Exploration & Development, Beijing, China 2.Petroleum Engineering School, Southwest Petroleum University, Chengdu, China 3.Key Laboratory for Mechanics in Fluid Solid Coupling Systems, Institute of Mechanics, Chinese Academy of Sciences, Beijing, China 4.School of Engineering Science, University of Chinese Academy of Sciences, Beijing, China 5.School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture, Beijing, China
推荐引用方式 GB/T 7714	Wan YJ,Chen ZY,Shen WJ ,et al. Study of the effects of hydraulic fractures on gas and water flow in shale gas reservoirs[J]. Energy Sources, Part A: Recovery Utilization and Environmental Effects,2019:1-12.
APA	Wan YJ.,Chen ZY.,Shen WJ .,Kuang ZX.,Liu XH.,...&Hu Y.(2019).Study of the effects of hydraulic fractures on gas and water flow in shale gas reservoirs.Energy Sources, Part A: Recovery Utilization and Environmental Effects,1-12.
MLA	Wan YJ,et al."Study of the effects of hydraulic fractures on gas and water flow in shale gas reservoirs".Energy Sources, Part A: Recovery Utilization and Environmental Effects (2019):1-12.