Single mouth bar and accretive sand body within single mouth bar were identified and divided, integrating borehole data with dynamic data in Es_2～8 Formation of Shengtuo Oilfield. A quantificational method for analyzing reservoir architecture of mouth bar was created. Three identification marks were presented for recognizing single mouth bar i.e., the existing difference from curves characteristics thickness of strata, the appearance of marginal bar and the difference from the number of intercalations. Using the method of model fitting combination with dynamic verifying, the angle of three-order boundary is calculated to be approximate 2°～4°, with abundant dynamic data of dense well pattern in study area. Quantitative and reliable geological model can be applied in the analysis of mouth bar, and three-dimensional reservoir architecture model is made precisely to find and produce remaining oil.%以胜坨油田胜二区沙二段8砂组为例,应用岩芯、测井,动态等资料,对研究区单一河口坝、单一河口坝内部增生体进行识别划分,形成一套针对河口坝地下储层构型精细解剖方法.在研究过程中,归纳3种单一河口坝识别标志:区域性曲线形态及地层厚度差异;坝缘微相的出现;夹层个数的差异.在密井网区利用丰富的动态资料,运用"模式拟合,动态验证"的研究思路得出该区单一河口坝内部3级界面倾角为2°～4°,为全区自的河口坝解剖提供了定量、可靠的的地质模式,最终建立研究区真正意义上的三维储层构型模型,为寻找剩余油及挖潜提供可靠的地质依据.
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