靖安油田张渠一、二区储层控制因素分析

运用储层控制因素分析方法 ,系统分析了靖安油田张渠一、二区岩性、电性和沉积环境 ,认为张渠一、二区具有同一物源、同一水动力体系和同一沉积环境 ,由于水动力条件上的差异 ,导致储层电性、物性、砂体展布及油藏控制因素等方面具有差异性 :张渠一区以辫状河心滩的沉积为主 ,水道发育 ,储层由两个左右对称的 A,B砂体和 B砂体的延伸部分 C砂体组成 ,非均质性强 ,含油饱和度低 ,含水率高 ;张渠二区以低弯度曲流河边滩的沉积为主 ,储层由上下对称的上、中、下三个砂体组成 ,沿河道呈长条状分布 ,横向连通性好 ,含油饱和度高 ,含水率低 .

Analysis of the Control Factors of the Reservoir in Zhangqu Ⅰ and Zhangqu Ⅱ Areas,Jing'an Oil Field

Analysis of reservoir control factors is the direct and effective approch of studying the oil reservoiring characteristics of reservoirs. According to the systematic analyses of the lithology, electrical property and depositional environment of Zhangqu Ⅰand Ⅱ areas, it is held that the two areas have the same source, the same hydrodynamic system and depositional feature. But there are deferences in their electric property, physical property, sandbody distribution and reservoir control factors because there is deference in their hydrodynamic conditions. ZhangquⅠ area is of braided river centre shoal deposition, developed water channel, serious heterogeneity, low oil saturature and high water cut. It consists of sandbody A, sandbody B, and sandbody C which is the extension of sandbody B , and A and B distribute symmetrically. Zhangqu Ⅱ area is of little bending meadering river side shoal deposition, good transverse connectivity, high oil saturation, and low water cut. It consists of three sandbodies which distribute symmetrically in vertical direction. It is a strip along river channel.