Research on reservoir bed heterogeneity, interlayers and seal layers and controlling factors of 2＋3 sands of upper second member, Shahejie Formation, in the west of the Pucheng Oilfield

• Published in: Petroleum science Vol. 5; no. 2; pp. 135 - 144
• Main Authors: Zhang, Wei, Zhang, Jinliang, Xie, Jun
• Format: Journal Article
• Language: English
• Published: Beijing China University of Petroleum (Beijing) 01.05.2008; KeAi Publishing Communications Ltd; College of Marine Geo-Science,Ocean University of China,Qingdao,Shandong 266100,China%College of Marine Geo-Science,Ocean University of China,Qingdao,Shandong 266100,China; College of Resource Science and Technology,Beijing Normal Unicersity,Beijing 100875,China
• Subjects: Data logging; Distribution; Earth and Environmental Science; Earth Sciences; Economics and Management; Energy Policy; Heterogeneity; Industrial and Production Engineering; Industrial Chemistry/Chemical Engineering; Interlayers; Logging; Mineral Resources; Oil and gas fields; Oil fields; Physical properties; Reservoirs; Sand; Spatial distribution; Well logging; 储集层; 油气勘探工作; Sedimentary system; interlayer and seal layer; terminal fan; reservoir bed heterogeneity
• ISSN: 1672-5107; 1995-8226
• DOI: 10.1007/s12182-008-0021-5

Terminal fans have formed the sedimentary system of the 2＋3 sands of the upper second member, Shahejie formation in the west of the Pucheng Oilfield, Bohai Bay Basin, East China. Based on well logging data and physical properties of the reservoir beds, the 2＋3 sands were divided into 16 sublayers. The heterogeneity of reservoir beds and distribution of interlayers and seal layers in the 2＋3 sands were investigated. The intra-layer heterogeneity and inter-layer heterogeneity primarily belong to the severely heterogeneous classification. The spatial differentiation of sedimentary microfacies resulted in a change of reservoir bed heterogeneity, strong in the middle and southern parts, weak in the northern part. Spatial distribution of interlayers and seal layers is dominated by sedimentary microfacies, and they are thick in north-eastern and middle parts, thin in the south-western part.