Abstract: Taking low permeability minor faulted block reservoir in fengtan block of Zhejiang oilfield as an example, through the research on flooding pattern form under fracturing situation by numerical reservoir simulation, compared to flood development effect of different well pattern which were triangular pattern, rectangular inverted five-spots pattern, quadrate inverted nine spot pattern, diamond inverted nine spot pattern and so on, the finding indicates the development effect of rectangular inverted five-spots pattern under fracturing situation is best. And it researches rational injector producer distance of inverted five-spots pattern on minor faulted block reservoir under different permeability and reservoir thickness. The research achievement has a guiding role in initial development design and development regulate of low permeability faulted block reservoir.

Key words: Low permeability, Minor faulted block, Flooding pattern, Well spacing, Optimization

摘要： 　以浙江油田丰探区块低渗小断块油藏为例，通过对油藏数值模拟压裂情况注采井网形式进行研究，比较三角形井网、矩形反五点井网、正方形反九点井网和菱形反九点井网等不同井网下的注水开发效果，研究结果表明压裂情况下矩形反五点井网开发效果最好。同时对不同渗透率和储层厚度下，小断块油藏反五点井网合理注采井距进行了研究探讨。研究成果对低渗断块油藏的早期开发设计和开发调整具有一定的借鉴指导作用。

关键词: 低渗 , 小断块 , 注采井网 , 井距 , 优化