高青油田樊107块欠注原因分析及治理对策

Analysis on Insufficient Injection of Fan Block No.107 of Gaoqing Oilfield and Countermeasures Against It

针对高青油田樊107块注水井高压欠注难题,通过对该油田储层的物性、注入水水质、注入水与地层水配伍性试验进行研究分析,确定了高青油田樊107块储层欠注的主要原因。结果表明:储层原始物性差(平均渗透率为8.7×10^(-3)μm^2),注入水水质不达标,注入水与地层水配伍性差是欠注的主要原因。基于此,有针对性地提出了预防储层损害的措施和手段,以期改善注水效果,提高注水效率。

The primary causes of the problem of high pressure and insufficient injection occurred in Fan Block No. 107 of Gaoqing Oilfield were identified by investigating and analyzing the physical properties of the reservoir and the quality of of the injection water of this oilfield and by carrying out the test studying the compatibility of the compatibility of the injection water with the formation water. The results of study have shown that the original physical properties of the reservoir are poor with the mean permeability being8. 7 × 10-（-3） μm-2 and that the off-specification of injection water quality and the poor compatibility of the injection water with the formation water are the primary causes of insufficient injection. In consideration of this,some specifial measures for preventing reservoir damage are presented for the purpose of improving water injection effect and increasing water injection efficiency.