五里湾—杨米涧地区上三叠统长2油层组储层沉积微相及非均质性特征

The research of the sedimentary microfaceies and the reservoior heterogeneity characteristics in Chang;2 reservoir of upper triassic series in Wuliwan,Yangmijian area

五里湾—杨米涧地区上三叠统长2油层组是在湖盆消亡时期形成的一套的三角洲沉积,主要发育水上分流河道、水上天然堤、决口扇、沼泽等沉积微相类型。储层平面非均质性主要受沉积相带、砂体展布形态控制,层间非均质性属于中等,层内非均质性较强。

Chang-2 reservoir of upper triassic series in wuliwanyangmijian area are deltaicDeposits during disppearing of lake-basin it s consis of the sedimentary microfacies,such as distributary channel,natural levee,crevass fan and marsh microfacies.Plane-layer heterogeneity is mainly controlled by sidimentary faceieszones and distribution of sandbodies.interlayer heterogenityis medium.intralayer heterogeneityis relative strongly.