海上油田内源微生物与表面活性剂复合驱油剂性能的研究

Performance Research of Indigenous Microbe andSurfactant Combined Flooding in the Offshore Oilfield

李 璇 谢日彬 亓海燕 万 钢

Li Xuan Xie Ribin Qi Haiyan Wan Gang

关键词: 微生物, 表面活性剂, 界面张力, 乳化性, 岩心驱替

There were two advantages of composite applications of microbe and surfactant: on the one hand, surfactant enhanced the capability of microbe in emulsion and Viscosity Reduction; on the other hand, the microbial nutrient solution could reduce the loss of surfactant adsorption in the shale and ineffective in the reservoir, so microbe and surfactant tended to have synergistic reaction. Five type surfactants were selected that surfactant HSB12 and OPS could be reduced to ultralow interfacial tension between oil and water. Surfactant HS B - 1 2、 OP - 1 0could emulsify and reduce the viscosity of crude oil. The effect of surfactants HS B - 1 2、 F P 3+OP - 1 0 on microbes could be ignored, and microbe/surfactant combined flooding was obviously better than single surfactant flooding or microbial flooding.The maximum of recovery reached 9.67%.

天津市科技型中小企业专项资金( 周转资金) 项目( 1 1 KQ Z Z SW0 1 9) 。

10.3696/j.issn.1672-6952.2015.01.011