孤岛油田中一区馆1+2小砂体油藏高效开发模式研究

Development Modes of Guan(1+2) Small Oil Sand Reservoirs in Zhong 1 Area of Gudao Oilfield

孤岛油田中一区馆1+2小砂体分布零散,现有井网储量控制程度低,采收率低。基于理论测算及矿场实际,在砂体分类评价的基础上,开展不同类型砂体开发对策研究,结合经济评价,确定不同类型砂体的最佳开发模式。截至2015年10月共投产新井13口,其中油井7口,水井6口,新建产能1.76×104t,日油水平由调整前的124.1t增加到182.9t,日注水量由791m3增加到1263m3,综合含水率下降2%,小砂体挖潜取得了较好的效果。研究结果为同类小砂体油藏的开发决策提供了有效指导。

Small oil sand bodies in Zhong 1Area of Gudao Oilfield were scattered.The existing well pattern was low reserves control and low oil recovery.Based on theoretical calculation and field practice,as well as the classification and evaluation of oil sand bodies,development strategy was studied for different types of sand bodies.Combined with economic evaluation,the best development modes were determined for different types of oil sand bodies.By the end of October,2015,13new wells were put into production,including 7oil wells and 6water wells.The newly built productivity was 1.76×10~4t and daily oil production increased from 124.1tto 182.9t,the daily water-injection rate increased from 791m3 to 1263m^3 and the total water cut reduced 2%.The good effect of potential tapping is achieved for small oil sand bodies.This study provides effective guidance for the development of similar small oil sand bodies.