孤岛油田稠油油藏井网优化研究

采用数值模拟对孤岛油田合理井网密度、井网加密时机、井网类型以及经济评价等方面进行了研究。研究认为:孤岛油田以300m井距井网开采,其采收率较高,经济效益最好;分阶段布井开发,在稀井网开发的基础上加密井网优于一次性采用密井网开发;油水粘度比不同,加密时机不同,其采收率不同;对稠油油藏高含水期加密井网开发效果较好;采用强化的注采系统开采,水驱控制程度高,最终采收率高。

A STUDY ON WELL PATTERN OPTIMIZATION OF HEAVY OIL RESRVOIR IN GUDAO OIL FIELD

This paper studies the reasonable well pattern density,well pattern infill time,well pattern types and economic evaluation etc. using numerical simulation. The results show that the recovery factor is relatively high by adopting the well pattern of 300 m well spacing in Gudao oilfield and the economic benefit is most favorable;it is advantageous stage developing oil field and infilling wells on basis of wide spacing over developing with infill well pattern at one time; both the oil-water viscosity ratio and infill time are different,so the development result of infill well pattern at high water-cut stage is relatively favorable in heavy oil reservoir; both the controllable level of water drive and the final recovery factor is high using enhanced injection and production system.