生物膜对多孔介质渗透率的影响研究

发布时间：2018-06-30 03:31

本文选题：多孔介质 + 生物膜　；参考：《东北石油大学》2015年硕士论文

【摘要】：微生物提高石油采收率技术是极具开发潜力的三次采油技术之一,目前已成为石油界研究的新热点,它是继传统的热驱、化学驱和气驱之后的第四种新的提高原油采收率的方法,有着非常好的工业化矿场应用前景。在国内外开展的微生物采油先导性矿场试验已初见成效,比较典型的是美国和俄罗斯,我国的吉林油田、胜利油田、大庆油田等油田也先后进行了矿场试验,油田的增产效果明显。微生物采油技术的应用从过去的单井处理到现在向整个区块或油田发展,呈现蓬勃发展的趋势。目前,人们对微生物采油技术的关注倾向于矿场实验方面,而对微生物及其产物的在提高采收率方面能够发挥多大的作用缺少深入的理论研究。本文介绍了微生物采油技术的国内外发展现状,分析了微生物采油技术的优点,立足于微生物调剖机理,探讨了生物膜的形成对多孔介质渗透率产生的影响。通过实验与理论模型相结合的方式,筛选出适合微生物驱油的繁殖较快、适应能力较强的菌种;用岩芯实验考察生物膜对渗透率的影响能力,并用Taylor模型、Seki模型、Clement模型3种模型进行验证;应用分形理论计算出相对渗透率表达式模型,与实验测得结果相结合探讨生物膜对相对渗透率的影响。
[Abstract]:Microbial enhanced oil recovery technology is one of the most potential tertiary oil recovery technologies, and has become a new research hotspot in the petroleum field. The fourth new method of improving oil recovery after chemical flooding and gas flooding has a very good prospect of industrial application. Pilot field tests of microbial oil extraction have been carried out at home and abroad. Typical of them are the United States and Russia, Jilin Oilfield, Shengli Oilfield, Daqing Oilfield and other oilfields in China. The effect of increasing production in oil fields is obvious. The application of microbial oil recovery technology from single well treatment to the whole block or oil field is developing rapidly. At present, people tend to pay attention to microbial oil recovery technology in field experiments, but there is no deep theoretical study on how much microbes and their products can play in enhancing oil recovery. This paper introduces the development of microbial oil recovery technology at home and abroad, analyzes the advantages of microbial oil recovery technology, discusses the influence of biofilm formation on the permeability of porous media based on the mechanism of microbial profile control. Through the combination of experiments and theoretical models, the bacteria that are suitable for microbial oil displacement are screened out, and the influence of biofilm on permeability is investigated by core experiment. Taylor model Seki model and Clement model were used to verify the model, and fractal theory was used to calculate the expression model of relative permeability, and the effect of biofilm on relative permeability was discussed in combination with the experimental results.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE357.9

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