微生物驱油矿场试验及效果分析

Field tests and effect analysis of microbial oil displacement.

针对正理庄油田沙一段油层非均质性严重 ,层间隔层较小 ,常规调剖效果较差的特点 ,对微生物驱油的可行性进行了研究 ,确定了微生物注入井并制定了整体方案。矿场试验表明 ,微生物驱油之后与之前相比 ,产量自然递减下降了 3 .7% ;日产油量上升了 14t/d ;综合含水下降了 3.1% 。

Feasibility of microbial oil displacement is studied for serious heterogeneity of pay zones in Es 1, small interlayer and poor effect of regular water injection. Injection wells of microbes and integrated project are determined. The field tests show that natural decline rate reduced 3.7%, daily oil production increased 14t/d, composite water cut decreased 3.1% for microbial oil displacement compared with before. The production effect is improved obviously.