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本文从孔隙结构、物性、砂体展布等方面详细论证了文 2 5东块沙二下油藏宏观和微观非均质特征 ,建立了不同沉积微相的非均质模式 ,并结合油田开发特征 ,分析了各种非均质模式对油田开发生产的影响 ,指出平面上砂体发育的不稳定性及物性的方向性是影响注水面积波及效率的主要因素 ,层内重力作用是影响单砂层层内垂向上注入剂波及体积的重要因素。层内非均质性是造成 、 类层动用差的主要原因。
In this paper, macroscopic and microscopic heterogeneities of Es2 reservoir in Wen 2 25 East Block are demonstrated in detail from the aspects of pore structure, physical properties and sandbody distribution, and the heterogeneous models of different sedimentary microfacies are established. Combined with the development of oil fields Characteristics of various inhomogeneous models on the development and production of oilfields are analyzed. It is pointed out that the instability of sandbody development and the directionality of physical properties on the plane are the main factors affecting waterflooding area efficiency. The vertical injection of agents within the layers affect the volume of an important factor. Intra-layer heterogeneity is caused by the main reason for poor use of the class.