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青海油砂山剖面第６８层三角洲分流河道砂体内部可识别出来Ｇｐｒ、Ｇｌｔ、Ｇｅ、Ｓｌｔ、Ｓｍｔ、Ｓｐｒ、Ｓｌａ、Ｓｂｍ、ＳＩｃｒ、ＳＩｈ和Ｍｒｉ等１２种岩石相，它们构成了６种岩石相组合，即：Ｇｅ－Ｇｐｒ－Ｇｌｔ组合，Ｇｌｔ－Ｓｌｔ组合，Ｓｌｔ－Ｓｍｔ组合，Ｇｌｔ－Ｓｂｍ组合，Ｓｓｔ－Ｍｒｌ组合，Ｇｐｒ（Ｓｐｒ）－Ｍｒｌ－Ｓｓｔ－Ｍｒｌ－ＳＩｃｒ－Ｍｒｌ组合。按照沉积界面之间的切割关系，建立一个包括７级界面的界面层次，第一级为砂体的上下边界，第七级为纹层边界，沉积界面将砂体分隔为三个沉积幕，它们由六个沉积亚幕组成。砂体建筑结构要素包括侧积体（ＬＡ），纵向砂坝（ＬＢ），横向砂坝（ＴＢ），简单砾质充填（ＧＦ），简单砂质充填（ＳＦ）和堤岸砂坪（ＬＦ）等六种类型，它们具有不同的宽度和厚度比。通过露头密网格采样和沉积学分析建立了砂体渗透率原型模型，均质模型，幕式模型以及建筑结构要素模型，其中建筑结构模型与原型模型相似性最好，证明了利用建筑结构分析可以建立符合砂体客观实际的储层地质模型
Twelve kinds of lithofacies such as Gpr, Glt, Ge, Slt, Smt, Spr, Sla, Sbm, SIcr, SIh and Mri can be identified in the distributary channel sand body of the 68th layer of the InSaoshan section of Qinghai. Glt-Slt combination, Slt-Smt combination, Glt-Sbm combination, Sst-Mrl combination and Gpr (Spr) -Mrl-Sst-Mrl-SIcr-Mrl combination. According to the cutting relationship between depositional interfaces, an interface hierarchy including seven levels of interface is established. The first level is the upper and lower boundary of the sandbody, the seventh level is the boundary of the grain boundary, and the sedimentary interface divides the sand body into three sedimentary curtains. Composed of six sedimentary sub-curtains. Structural elements of sandbody include LA, LB, TB, GF, SF and LF etc. Six types, they have different width and thickness ratio. Through the outcrop mesh sampling and sedimentology analysis, the model of sand body permeability prototype, homogeneous model, curtain model and building structural element model were established. The similarity of building model and prototype model was the best, which proved that the use of building structure analysis The reservoir geological model that conforms to the objective reality of sand body can be established