Analytical Model of Waterflood Sweep Efficiency in Vertical   Heterogeneous Reservoirs under Constant Pressure

doi:10.1155/2016/6273492

CORC > 北京大学 > 地球与空间科学学院

	Analytical Model of Waterflood Sweep Efficiency in Vertical Heterogeneous Reservoirs under Constant Pressure
	Zhao, Lisha ; Li, Li ; Wu, Zhongbao ; Zhang, Chenshuo
刊名	MATHEMATICAL PROBLEMS IN ENGINEERING
	2016
关键词	PERFORMANCE
DOI	10.1155/2016/6273492
英文摘要	An analytical model has been developed for quantitative evaluation of vertical sweep efficiency based on heterogeneous multilayer reservoirs. By applying the Buckley-Leverett displacement mechanism, a theoretical relationship is deduced to describe dynamic changes of the front of water injection, water saturation of producing well, and swept volume during waterflooding under the condition of constant pressure, which substitutes for the condition of constant rate in the traditional way. Then, this method of calculating sweep efficiency is applied from single layer to multilayers, which can be used to accurately calculate the sweep efficiency of heterogeneous reservoirs and evaluate the degree of waterflooding in multilayer reservoirs. In the case study, the water frontal position, water cut, volumetric sweep efficiency, and oil recovery are compared between commingled injection and zonal injection by applying the derived equations. The results are verified by numerical simulators, respectively. It is shown that zonal injection works better than commingled injection in respect of sweep efficiency and oil recovery and has a longer period of water free production.; China National Petroleum Co., Ltd., Major Science and Technology Projects [2012E-3304]; SCI(E); ARTICLE; zhaolisa1121@163.com
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/459128]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Zhao, Lisha,Li, Li,Wu, Zhongbao,et al. Analytical Model of Waterflood Sweep Efficiency in Vertical Heterogeneous Reservoirs under Constant Pressure[J]. MATHEMATICAL PROBLEMS IN ENGINEERING,2016.
APA	Zhao, Lisha,Li, Li,Wu, Zhongbao,&Zhang, Chenshuo.(2016).Analytical Model of Waterflood Sweep Efficiency in Vertical Heterogeneous Reservoirs under Constant Pressure.MATHEMATICAL PROBLEMS IN ENGINEERING.
MLA	Zhao, Lisha,et al."Analytical Model of Waterflood Sweep Efficiency in Vertical Heterogeneous Reservoirs under Constant Pressure".MATHEMATICAL PROBLEMS IN ENGINEERING (2016).