微生物在多孔介质中运移规律研究

发布时间：2018-05-30 13:12

本文选题：微生物 + 岩心物性　；参考：《东北石油大学》2015年硕士论文

【摘要】：自贝克曼提出微生物可以用于采油,经过将近一个世纪的不断实践和研究,微生物采油技术日臻完善,逐渐走进石油科研人员的视野。因微生物采油具有独特的驱油机理、简易的操作流程、对地层和环境无伤害的特性以及可以根据地层环境灵活调整菌种和营养液的优势存在,引起了世界范围内对微生物技术的重视,并进行广泛的现场实践,取得了非常显著的提高采收率效果。特别是对经济效益较差的油井,具有非常明显的延长油井经济寿命的作用。虽然微生物驱油技术在生产实践和理论研究方面取得优异的成果,但是就微生物的生物特性而言还存在一定的不足,因此,在以后的生产实践和理论研究中应不断完善该技术,争取最大化的发挥微生物采油技术在提高原油采收率方面的作用。本文首先对优秀菌株的分离筛选,然后对筛选出的两种菌株进行热稳定性,pH值适应性,耐盐性能等方面的评价,优选出的产表活剂菌bnsp-3菌。对筛选出的目标菌株在多孔介质中的运移情况进行分析,探究微生物菌液在多孔介质中渗流对岩心渗透率等岩心物性参数对微生物菌液在多孔介质中渗流的影响。对微生物菌液在岩心中的分布进行研究,推导出适合微生物体系在岩心中分布情况的一维对流迁移方程;通过微生物菌液在一维岩心模型中的运移情况,验证理论公式的准确性。
[Abstract]:Since Beckman proposed that microbes can be used in oil production, after nearly a century of continuous practice and research, microbial oil recovery technology is becoming more and more perfect, and gradually into the field of view of petroleum researchers. Because of the unique oil displacement mechanism of microbial oil recovery, simple operation process, no damage to formation and environment, and the advantages of adjusting bacteria and nutrient solution flexibly according to the formation environment, It has attracted worldwide attention to microbial technology, and carried out extensive field practice, and achieved a very significant oil recovery effect. Especially for oil wells with poor economic benefits, it has a very obvious effect of prolonging the economic life of oil wells. Although the microbial oil displacement technology has made outstanding achievements in production practice and theoretical research, there are still some deficiencies in the biological characteristics of microbes. Therefore, in the future production practice and theoretical research, the technology should be continuously improved. Try to maximize the use of microbial oil recovery technology in improving oil recovery. In this paper, the excellent strains were first isolated and screened, and then the two strains were evaluated in terms of their thermal stability, pH adaptability, salt tolerance and so on. The migration of the selected target strains in porous media was analyzed to explore the effect of microbial liquid seepage in porous media on the core physical parameters such as core permeability on the percolation of microbial liquid in porous media. The distribution of microbial liquid in rock core is studied, and the one-dimensional convection migration equation suitable for the distribution of microbial system in rock core is deduced, and the migration of microbial liquid in one-dimensional core model is obtained. Verify the accuracy of the theoretical formula.
【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

【共引文献】