论文部分内容阅读
根据岩心观察结果，并综合利用测井资料数字处理成果、粒度分析、铸体薄片、电镜分析等资料，对孤岛油田中二中区馆陶组上段第三砂层组沉积微相进行了系统研究。该油田研究层段属曲流河沉积，又可将其细分为４种亚相（河道亚相、河道边缘亚相、泛滥平原亚相及废弃河道亚相）和７种微相（河道砂坝微相、河道充填微相、天然堤微相、决口扇微相、河漫滩地微相、河漫洼地微相和废弃河道微相）。根据砂层划分结果，对其中４个砂层的沉积微相平面展布特征全面地进行了分析，为储层非均质性研究、油田开发方案调整和动态分析提供了可靠的地质依据。
The sedimentary microfacies of the third member of the Upper Member of Guantao Formation in Zhong Er Oil Field are systematically studied based on the observation results of the cores and comprehensively using the digital processing results of log data, grain size analysis, cast thin slice and electron microscope analysis . The study section of this oil field is meandering river sediments, which can be subdivided into four subfacies (channel subfacies, subfacies of river channel, subfacies of flood plain and subfacies of abandoned channel) and seven microfacies Dam microfacies, channel fill microfacies, natural dike facies, faulted fan microfacies, microfacies of river floodplain, microfacies of flood plain and abandoned channel microfacies). According to the result of sand layer division, the plane distribution characteristics of sedimentary microfacies of 4 sand layers are comprehensively analyzed, which provides a reliable geological basis for reservoir heterogeneity research, adjustment and dynamic analysis of oilfield development plan.