多孔介质微生物提高原油采收率模型  

Microbial enhanced oil recovery model in porous media

作　　者：王天源 修建龙[2,3] 黄立信[2,3] 毕永强[1] 齐义彬 从拯民 俞理[2,3] 

机构地区：[1]中国科学院大学渗流流体力学研究所,河北廊坊065007 [2]中国石油勘探开发研究院廊坊分院,河北廊坊065007 [3]中国石油天然气集团公司三次采油重点实验室,河北廊坊065007 [4]中国石油化工股份有限公司石油勘探开发研究院,北京100083 [5]北京师范大学生命科学学院,北京100875

出　　处：《石油学报》2016年第1期97-105,共9页Acta Petrolei Sinica

基　　金：国家高技术研究发展计划(863)项目(2013AA064402);国家自然科学基金面上项目(No.41573068)资助

摘　　要：通过分析微生物在多孔介质中的运移规律,建立了能反映微生物驱油过程的三维三相(油、气、水)四组分数学模型,模型中的组分有微生物、营养物、溶解氧以及代谢产物(生物表面活性剂)。模型分析了对流、扩散、微生物生长和死亡、趋化性、营养物消耗、代谢产物生成、各组分吸附和微生物解吸附等特性,并考虑了微生物吸附造成渗透率下降、代谢产物降低原油黏度和油-水界面张力等性质。进一步根据数学模型研制了对应的模拟器,在给定参数条件下,对微生物驱油效果进行了预测,分析了最大比生长速率、微生物吸附常数、趋化性系数以及代谢产物得率对微生物驱油的影响,进一步揭示了微生物提高采收率的作用机理。Through analyzing the migration laws of microorganisms in porous media,a3 D three-phase（oil,gas and water）four-component mathematical model was established to reflect the process of MEOR（microbial enhanced oil recovery）.The components of the model include microbe,nutrient,dissolved oxygen and metabolite（surfactant）.The model is used to analyze the convection,dispersion,growth and decay of microbes,chemotaxis,nutrient consumption,metabolite production,adsorption of all components,microbe desorption and other properties.In the meantime,the MEOR model considers the permeability decline due to adsorption of microorganisms as well as the reductions in oil-viscosity and oil-water interfacial tension due to surfactant.Further,the corresponding simulator was developed according to the mathematical model.The microbial enhanced oil recovery effect was predicted under given parameter conditions,so as to analyze the influences of maximum growth rate,microbial adsorption constant,chemotaxis coefficient and metabolite yield coefficient on MEOR and further reveal the mechanism of MEOR.

关 键 词：多孔介质 微生物提高采收率 数学模型 模拟器 预测 敏感性分析 

分 类 号：TE357.9[石油与天然气工程—油气田开发工程]