Yue Ming, Zhu Weiyao, Song Zhiyong, Long Yunqian, Song Hongqing
School of Civil and Resources Engineering, University of Science & Technology Beijing, Beijing 100083, China.
Innovation Application Institute, Zhejiang Ocean University, Zhoushan 316022, China.
Saudi J Biol Sci. 2017 Feb;24(2):263-267. doi: 10.1016/j.sjbs.2016.09.014. Epub 2016 Sep 15.
In order to research oil displacement mechanism by indigenous microbial communities under reservoir conditions, indigenous microbial flooding experiments using the endogenous mixed bacterium from Shengli Oilfield were carried out. Through microscopic simulation visual model, observation and analysis of distribution and flow of the remaining oil in the process of water flooding and microbial oil displacement were conducted under high temperature and high pressure conditions. Research has shown that compared with atmospheric conditions, the growth of the microorganism metabolism and attenuation is slowly under high pressure conditions, and the existence of the porous medium for microbial provides good adhesion, also makes its growth cycle extension. The microbial activities can effectively launch all kinds of residual oil, and can together with metabolites, enter the blind holes off which water flooding, polymer flooding and gas flooding can't sweep, then swap out remaining oil, increase liquidity of the crude oil and remarkably improve oil displacement effect.
为研究油藏条件下本源微生物群落驱油机理，开展了利用胜利油田内源混合菌的本源微生物驱油实验。通过微观模拟可视化模型，在高温高压条件下对水驱和微生物驱油过程中剩余油的分布及流动情况进行了观察与分析。研究表明，与常压条件相比，高压条件下微生物代谢生长及衰减缓慢，多孔介质的存在为微生物提供了良好的附着性，也使其生长周期延长。微生物活动能够有效启动各类残余油，并可与代谢产物一起进入水驱、聚驱和气驱无法波及的盲孔，从而置换出剩余油，增加原油流动性，显著提高驱油效果。
