微生物驱油的参数敏感性分析

Sensitivity analysis of some parameters for MEOR

用反映细菌、营养液在油藏中的传输及细菌繁殖的一维三相微生物采油数学模型进行微生物驱油过程中的参数敏感性分析。结果表明 ,在微生物驱油过程中 ,存在驱油效果最好的细菌注入速率最佳值 ;细菌初始浓度越大 ,注入井井底细菌浓度增长就越快 ,细菌沉积量相应就越大 ;营养液初始浓度越大 ,细菌生长率就越大。图 3表 1参 6(陈军斌摘 )

Using a 1 dimensional, 3 phase mathematical model of microbial flooding, which is established preliminarily to describe the transportation of microbes in an oil reservoir, the sensitivity analysis of some parameters for MEOR was accomplished. The research manifests that (1)there is a best velocity of injected bacteria flow in the course of MEOR process; (2)the higher the bacteria initial concentration is, the faster the bacteria concentration's increment is and the bigger the bacteria deposited concentration is at the bottom of water injection well;and (3)the higher nutrient initial concentration is, the bigger bacteria growth rate is.