直角三角形小断块油藏注采井网模拟优化研究

摘要

In view of the characteristics of small block reservoirs with right triangle in small complex blocks, development performance rrnvariation under different well patterns is listed and rational injection & production well pattern for small block reservoirs rrnwith right triangle is given by using numerical simulation and based on the idea of changing incomplete well pattern into rrncomplete injection & production correlation. The results of the study shows that the optimized well pattern can increase rrnultimate oil recovery of small block reservoirs with right triangle and control the rise of water cut based on the balance of rrninjection & production. The study has further enriched the existing well pattern theory and methods, which provides necessary rrntheory and methods for the development of similar reservoirs and is significant to the development with water injection.%针对复杂小断块中的直角三角形小断块油藏,采用数值模拟方法,基于非完善井网完善注采关系的思路,列出了不同井网模式下的油藏开发动态变化,给出了直角三角形小断块油藏合理注采井网形式.研究结果表明,在注采平衡基础上,优化的井网能够提高直角三角形小断块油藏的最终采收率,控制含水上升.该研究为此类油藏现场布井开发提供了必要的理论和方法依据,进一步丰富了现有井网理论和方法,对注水开发具有重要参考意义.