A novel method of acquiring geothermal energy from unconsolidated sandstone reservoir by multi-directional wells deep borehole heat exchanger

doi:10.1016/j.csite.2021.101157

	A novel method of acquiring geothermal energy from unconsolidated sandstone reservoir by multi-directional wells deep borehole heat exchanger
	Wang, Yanxin 2; Bu, Xianbiao 1
刊名	CASE STUDIES IN THERMAL ENGINEERING
	2021-08-01
卷号	26 页码:8
关键词	Deep borehole heat exchanger Unconsolidated sandstone Directional wells Multi-directional wells deep borehole heat exchanger
ISSN号	2214-157X
DOI	10.1016/j.csite.2021.101157
通讯作者	Bu, Xianbiao(buxb@ms.giec.ac.cn)
英文摘要	The clogging problem during injection seriously limits the development and utilization of geothermal resources in unconsolidated sandstone area. Deep borehole heat exchanger can circumvent the problem of clogging, and however, high drilling and completion costs restrict its application. To reduce the drilling and completion costs and shorten the payback period, here a multi-directional wells deep borehole heat exchanger (MDWDBHE) system is proposed by sharing the vertical well and drilling directional wells at the lower part of vertical well with high extracted thermal output per meter well depth. The research result shows that for vertical well without directional well, the dynamic payback period is 18.55 years, while for MDWDBHE having 3 and 4 directional wells with the deflection point depth of 2000 m, the dynamic payback period is respectively 7.70 and 7.51 years, indicating that MDWDBHE can be popularized on a large scale just like the shallow ground source heat pump.
资助项目	National Natural Science Foundation of China[41972314]
WOS关键词	ABANDONED OIL-WELLS ; PERFORMANCE ; EXTRACTION ; SIMULATION
WOS研究方向	Thermodynamics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000672605000010
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/33454]
专题	中国科学院广州能源研究所
通讯作者	Bu, Xianbiao
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 2.Sinopec Star Petr Co LTD, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yanxin,Bu, Xianbiao. A novel method of acquiring geothermal energy from unconsolidated sandstone reservoir by multi-directional wells deep borehole heat exchanger[J]. CASE STUDIES IN THERMAL ENGINEERING,2021,26:8.
APA	Wang, Yanxin,&Bu, Xianbiao.(2021).A novel method of acquiring geothermal energy from unconsolidated sandstone reservoir by multi-directional wells deep borehole heat exchanger.CASE STUDIES IN THERMAL ENGINEERING,26,8.
MLA	Wang, Yanxin,et al."A novel method of acquiring geothermal energy from unconsolidated sandstone reservoir by multi-directional wells deep borehole heat exchanger".CASE STUDIES IN THERMAL ENGINEERING 26(2021):8.