Reservoir Characteristics and Main Control Factors of the Lower Sandstone Member Kepingtage Formation of Silurian in Tazhong Area, Tarim Basin
XU Yanjun1, ZHONG Dakang2, SUN Haitao2
1. School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China;2. College of Geosciences, China University of Petroleum, Beijing 102249, China
Abstract：Based on the fully recognition about stratigraphical and sedimentary characteristics of the lower sandstone member Kepingtage Formation of Silurian in Tazhong Area, Tarim Basin and by using large number of thin-sections and cores, the lithology and reservoir characteristics have been studied and the reservoir developing characteristics with main control factors have been illustrated. The characteristics of the reservoir are as follows: Sand body of lower sandstone member of Kepingtage Formation primarily consists of both fine-grained lithic sandstone and lithic quartz sandstone, with low composition maturity, rich pore-filling contents, high-rounded, and well-sorted. The main pore types are original intergranular pore, intergranular emposieu, and micro-pore. The porosity ranges from 0.5% to 14.7% and the permeability ranges from 0.1×10-3μm2 to 100×10-3μm2, therefore the reservoir is characterized by over-low porosity and permeability. Sedimentary environment, deep-bury, and lithgenesis function (compression, carbonate, cementation) are main factors that control the reservoir characters.
徐燕军;钟大康;孙海涛. 塔中地区柯坪塔格组下砂岩段储层特征和主控因素[J]. , 2012, 30(15): 22-28.
XU Yanjun;ZHONG Dakang;SUN Haitao. Reservoir Characteristics and Main Control Factors of the Lower Sandstone Member Kepingtage Formation of Silurian in Tazhong Area, Tarim Basin. , 2012, 30(15): 22-28.
2012, Vol. 30 
