本文以喇嘛甸油田三类油层三元试验区为研究对象,研究区位于喇嘛甸油田北东块喇8-24井区。通过研究得出:该研究区主要发育水下分流河道微相、河口砂坝微相和席状砂微相。平面可细分出4种沉积砂体类型,即枝-坨过渡状三角洲内前缘砂体、坨状三角洲内前缘砂体、三角洲外前缘一类沉积砂体和三角洲外前缘二类沉积砂体。 In this paper, we take the ternary test area of ​​Lamadian three types of oil fields as the research object, and the research area is located in La 8-24 well in the North East Block of Lamadian Oilfield. The study shows that: the study area mainly develops underwater distributary channel microfacies, estuary sand bar microfacies and sheet-like sand microfacies. The plane can be subdivided into four types of sedimentary sand bodies, namely, the Zhitao-Tuo transition delta inner margin sand body, the lump delta inner margin sand body, the delta front outer margin sedimentary sand body and the delta outer front edge Sedimentary sand body.