胜利油田断块油藏小层组合技术界限的改进

摘要

胜利油田断块油藏具有纵向上含油层系多、层间非均质严重等特点.对于边水断块油藏,还具有各小层含油条带宽度不同、水体倍数不同的特点.含油条带宽度和水体倍数相差较大的小层组合为一套层系进行开发,对井网的部署及开发效果影响较大.因此小层组合中除了考虑一般的渗透率级差、黏度级差等技术界限外,还应考虑含油条带宽度级差和水体倍数级差界限.分析了含油条带宽度和水体倍数大小不同的小层组合后对开发动态的影响.建立了小层组合时含油条带宽度级差和水体倍数级差界限.并将研究结果应用到实际断块油藏的开发中,取得了较好的效果.%Fault block reservoir of Shengli Oilfield possesses the characteristics of many oil — bearing strata, serious heterogeneity. In addition, for the layers in the edge water fault block reservoirs, their oily strip width and edge water body multiples are different. The combination of the layers with different oily strip width and edge water body multiples have great impact on the development effect of the development unit. Therefore, in addition to considering the technology limits of permeability differences and oil viscosity differences, such the technology limits as oily strip width differences and edge water body multiples differences should be considered during the layers combination. The effect of the combination of different layers with oily strip width differences and edge water body multiples differences on the reservoir performance is analyzed. And the technology limits of oily strip width differences and edge water body multiples differences are set up. The research result is applied to the actual fault block reservoir development, and achieves good results.