Study on distribution of reservoir endogenous microbe and oil displacement mechanism

详细信息    查看全文

• 作者：Ming Yue^a ; ^{271126840@qq.com} ; Weiyao Zhu^a ; Zhiyong Song^a ; Yunqian Long^b ; Hongqing Song^a
• 关键词：Endogenous microbes ; Porous media ; Displacement mechanism ; Microbial communities ; Microbial enhanced oil recovery
• 刊名：Saudi Journal of Biological Sciences
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：24
• 期：2
• 页码：263-267
• 全文大小：1314 K
• 卷排序：24

文摘

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.