Nutritious gel-assisted microbial flooding technology of SZ36-1 water drive oilfield in Bohai

According to water drive reservoir conditions,water quality and basic flora characteristics of H block in Bohai SZ36-1 oilfield,in order to improve the effect of microbial oil displacement,the indoor experiment method has been adopted to screen out nutritious gel type,and then its performance and compatibility have been evaluated.With the core displacement experiment and numerical simulation methods,the combination of nutritious gel and microbial flooding agent slug,and the injection volume have been optimized.The results indicate the nutritious gel-assisted microbial flooding on oil displacement effect is the best,and it can prolong the retention time of microbial flooding agent in oil reservoir,meantime,it can produce nutrients to activate microbial flora in deep reservoir.