孤岛油田中一区馆陶组聚合物驱注采动态及效果分析

Analysis of injection-production per formance and effect for polymer flooding in Ng4 of Zhong 1 area in Gudao oilfield.

孤岛油田中一区馆陶组 4开发单元 1997年 1月投入聚合物驱油 ,现已见到明显的降水增油效果 ,产油量由710t/d上升到 16 74t/d ,综合含水由 94.4%降至 86 .5 % ,累积增油 5 4.5 5× 10 4 t,2 0 0 0年 7月 2 0日转入后续水驱 ,目前正处于见效高峰期。对注聚期间油水井动态变化进行了研究 ,指出消除层间干扰、合理控制生产参数、提高注聚质量是改善聚合物驱油效果的重要技术措施。

Polymer flooding was started in Jan. 1997 for Ng4 of Zhong 1 area in Gudao oilfi eld. Obvious effect for decreasing water and increasing oil production has been seen now, where the daily oil production is increased from 710t/d to 1674t/d, the composite water cut is decreased from 94.4% to 86.5% and cumulative incrementa l oil is 54.55×10~4t. Succeeding water flooding is carried put on July 20, 200 0 i n this area, and its effect is at the peak response stage . The changes of the o il-water well performances during the polymer injection are studied, and it is p ointed out that removing interlayer interference, controlling production paramet ers reasonably and improving the quality of the polymer injection are the import ant measures for improving the effect of the polymer flooding.