Quantitative description of characteristics of high-capacity channels in unconsolidated sandstone reservoirs using in situ production data

• Published in: Petroleum science 2010-03, Vol.7 (1), p.106-111
• Main Authors: Wang, Xuezhong, Wang, Jianyong, Wang, Chuanfei, Zeng, Liufang, Liu, Xuewei
• Format: Article
• Language: English
• Subjects: Earth and Environmental Science; Earth Sciences; Economics and Management; Energy Policy; Industrial and Production Engineering; Industrial Chemistry/Chemical Engineering; Mineral Resources; 定量描述; 数学模型; 灰色关联理论; 生产数据; 疏松砂岩油藏; 石油采收率; 通道特性; 高容量
• ISSN: 1672-5107; 1995-8226
• DOI: 10.1007/s12182-010-0013-0

Quantitative description of the high-capacity channels in unconsolidated sandstone reservoirs, into which water was injected to improve oil recovery, is a hot topic in the field of reservoir development. This paper presents a novel approach to describing quantitatively the characteristics of connected macropores in unconsolidated sandstone reservoirs using in situ production data. Based on physical simulation for formation mechanisms of high capacity channels and interwell tracer test data, a mathematical model was established to describe high-capacity channels by grey correlation theory, flow mechanism of fluid in porous media and reservoir engineering, and a program was developed to describe quantitatively the channel characteristics. The predicted results were consistent with field monitoring data （80%）, so this model could be economically and effectively used to identify high-capacity channels.