一株微生物驱链球菌石油降黏的研究

本文介绍了一株链球菌石油降黏的情况，菌种最适生长条件为35℃，5%接种量，盐质量浓度2000mg/L；不同菌龄的离心菌体，除去菌体发酵液和含菌体发酵液分别与石油作用，可知菌体与其胞外代谢产物均有石油降黏效果，后者起主要作用；且含菌体发酵液与石油作用最佳条件为35℃，菌龄10h，与石油作用14h，转速160r/min，石油黏度由4000mPa·s以上降至500mPa·s。本实验表明实验菌种符合石油降黏条件，可用于进一步工业化微生物驱应用。

An oil reduction study on one microbial enhanced oil recovery(MEOR) streptococcus

As its biological reproducible ability, low price and high return, we attach more importance to micro-bial enhanced oil recovery (MEOR). However, the method of performance evaluation has not been perfected right now and the bacterium mechanism isn't clear, we' 11 try to research on the streptococcus's characteristics and explain how the microorganism works in this paper. Combining this result with analyzing of the conditions of the oil viscosity reduction, we find the best conditions are 35℃, 160 r/min, 5 % inoculation, 14 h effecting with oil after 10 h seed culture and the oil viscosity will reduce from 4000 mPa's to 500 mPa" s.