An enhanced method for modeling internal architecture of point bar sand bodyin meandering alluvial rivers
Shu Xiao1, Zhao Yongjun1, Wang Bingjie2
1. School of Geosciences, China University of Petroleum (Hua Dong), Qingdao, Shandong 266580, China;
2. School of Earth Sciences and Engineering, Nanjing University, Nanjing, Jiangsu 210093, China
Abstract：This paper proposes an enhanced method for modeling internal arechitecture of point barsand body. First a migration model of meandering rivers is established based on hydraulic equations. Then the location of point bar sand body generated is determined according to the curvature of centerlines. And the lateral accretion beddings and lateral accretion body are sequentially simulated under the control of erosion coefficient. Finally, the coupled numerical model is established. The applications in Nen River show that this method reproduces not only the curving geometries of channels, but also accurately characterize the shape of point bar and the arrangement relationship of internal architecture elements. At the same time, the simulation result coincide with real geological case as this method can incorporate geological data as much as possible by using erosion coefficient map. So this method is an effective modeling method.
舒晓, 赵永军, 王兵杰. 一种新的曲流河点坝砂体内部构型模拟方法[J]. 石油地球物理勘探, 2013, 48(增刊1): 151-156.
Shu Xiao, Zhao Yongjun, Wang Bingjie. An enhanced method for modeling internal architecture of point bar sand bodyin meandering alluvial rivers. OGP, 2013, 48(增刊1): 151-156.
