鄂尔多斯盆地黄陵地区长2油层沉积相特征

Huangling area Erdos basin Chang 2 reservoir sedimentary facies

以多学科理论为指导,结合已获得的有关测井、测试资料,对黄陵地区长2油层的沉积相特征进行研究。研究表明,湖泊三角洲相为长2段的主要沉积相,三角洲前缘以及前三角洲为亚相,主要沉积微相包括水下分流河道、水下天然堤、河口坝、分流间湾、远砂坝、席状砂等。长2油层储集砂体发育薄,呈透镜状,横向不连续,对储层的形成较为不利。

Based on the theories,combined with the logging and testing data have been obtained.The study of Huangling area reservoir facies sedimentary long 2.Research shows that the lake delta facies is the main sedimentary period of the 2 phase,delta front and prodelta facies is the main sedimentary microfacies,including underwater distributary channel,natural levee and interdistributary bay,mouth bar,distal bar,sheet sand,etc..The reservoir of Chang 2 reservoir is thin,which is in a lens shape,and the lateral is not continuous,which is unfavorable to the formation of the reservoir.