稠油油田开发中后期储层非均质性评价与应用

Evaluation and application of reservoir heterogeneity in middle and late periods of heavy oilfield development

井楼油田一区核三段Ⅲ油组经过多年的蒸汽吞吐开发，已进入开发中后期，储层非均质性导致剩余油呈现总体分散但局部富集的特点，文中得用SPSS因子分析法，确定了用于描述储层质量及几何形态的关键参数，在此基础上引入储层综合评价参数，对储层非均质性进行综合、定量描述，揭示了储层非均质性对油田开发的影响。研究表明，针对评价指数超过0．6的层位进行封堵，控制其汽窜影响，能有效启动潜力层；评价指数为0．3～0．7的区域具有较好的地质条件，水淹程度较低，是剩余油进一步挖潜的主要区域。

Ⅲ oil formation of H3 Layer of block 1 in Jinglou Oilfield has entered the middle and late development periods after years of cyclic steam development. The differences of reservoir heterogeneity make the remaining oil generally disperse, but locally enrich. This paper uses SPSS factor analysis method and determines the key parameters used to describe reservoir quality and geomtry. On the bases, it introduces the reservoir comprehensive evaluation index in order to give out a comprehensive and quantitative description for reservoir heterogeneity. The impact of reservoir heterogeneity on oilfield development is revealed. Studies show that the horizon with evaluation index more than 0.6 should be blocked to control the impact of steam channeling and initiate potential layers. The area with evaluation index of 0.3 to 0.7 has better geological conditions and low wateringcut, which is the main area for further tapping potential of remaining oil.