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萨尔图油田葡Ⅰ给河流相储集层非均质性复杂,在高合水后期仍有相当数量的剩余油。沉积微相的特征与组合是决定砂体非均质性质的主要因素,也是产生大量剩余油的根本原因。高弯曲河道剩余油分布与侧积作变化一致,呈侧积层和废弃河道遮挡的环形条带状。最外线的废弃河道和点坝下游处剩余油富集;与注水砂体连通不好的点坝存在较多的剩余油;低弯曲河道与顺在河道水淹沿主流线快速推进,河道边部形成断续分布的剩余油富集区。大庆石油管理局勘探开发研究院,葡Ⅰ1-4油层河流相储层精细地质模型研究,1994年。
Plot I of the Salto oil field has a heterogeneous reservoir facies in the fluvial facies, and there is still a considerable amount of residual oil in the later period of the Gaohe water. The characteristics and assemblage of sedimentary microfacies are the main factors that determine the heterogeneity of sand body and also the basic reason for producing a large amount of remaining oil. The distribution of remaining oil in the highly curved channels is consistent with that of the side products, showing a ring-shaped ribbon obstructed by the side lamination and abandoned river channels. The outermost abandoned river and the residual oil in the downstream of point dam are enriched; there is more residual oil in the point dam which is not in good connection with the waterflooding sand body; the low-bend river and Shun river are rapidly flooded along the main stream, The formation of intermittent distribution of remaining oil-rich area. Daqing Petroleum Administration Exploration and Development Research Institute, Pu Ⅰ 1-4 reservoir fine geological model of fluvial reservoir research, 1994.