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以胜坨油田坨七断块沙二段9~1层为例,通过对储层层内韵律性、层间差异性、层内层间隔夹层进行定量评价,揭示了9~1砂体储层层内、层间和平面非均质性特征,指出储层非均质性主要受到沉积相带、砂体展布和隔夹层分布的控制。研究了在储层非均质影响下剩余油的分布特征:在层内、层间非均质性影响下,剩余油主要分布在物性较差注采不完善的储层中;在平面非均质性控制下剩余油分布在平面上非主流线部位和渗透率较差的侧缘相带。
Taking the 9-1 layer of Sha 2 member of Tuo7 fault block in Shengtuo Oilfield as an example, the quantitative evaluation of the inter-layer interlayer and inter-layer inter- The results show that the reservoir heterogeneity is mainly controlled by sedimentary facies belt, sand body distribution and interlayer distribution. Under the influence of reservoir heterogeneity, the distribution characteristics of remaining oil are studied: under the influence of intra-layer and inter-layer heterogeneity, the remaining oil is mainly distributed in reservoirs with poor physical properties of injection and production; The residual oil under the qualitative control is distributed on the non-mainstream part of the plane and the lateral facies belts with poor permeability.