南泥湾油田松树林-新窑区长6_(3)沉积微相分析研究

Sedimentary Microfacies Analysis of Chang 6_(3) in the Songshulin-Xinyao Area of NanNiWan Oilfield

通过岩心观察,结合取心井段沉积微相类型、砂体平面展布特征分析后认为:南泥湾油田松树林-新窑区长6_(3)油层组发育为三角洲前缘亚相,沉积微相类型为水下分流河道微相、河口坝微相、天然堤微相和分流间湾微相;南泥湾油田松树林-新窑区长6_(3)油层主要发育2~3条三角洲前缘分流河道砂体,呈北东向西南展布,砂体连通性较好,具有良好发展前景。

Through core observations,combined with the types of sedimentary microfacies in the cored section and the characteristics of the sandbody’s planar distribution,it is concluded that:the NanNiwan SongShulin-Xinyao area Chang 6_(3) oil layer group develops delta front subfacies,which is further divided into water Lower distributary channel microfacies,estuary bar microfacies,natural dike microfacies and interdistributary bay microfacies.Chang 6_(3) oil layer mainly develops 2-3 delta front distributary channel sand bodies,which are distributed from northeast to southwest,and the sand bodies are well connected and have good prospects.