二次采油以后,地下仍有相当大的储量未被采出,提高采收率是目前采油工艺的一个重大课题。微生物提高采收率的技术是一种通过引入或刺激在油藏中能存活的微生物来提高原油采收率的技术。文章简要介绍了微生物采油机理,自行筛选生产的微生物采油菌液特性,以及现场应用情况和初步的经济效益分析。通过分析认为,该项技术具有较大的推广价值。 After the secondary oil recovery, there is still a considerable underground reserves have not been extracted to improve oil recovery rate is currently a major issue of oil extraction process. Microbial enhanced oil recovery is a technique that increases oil recovery by introducing or stimulating microorganisms that can survive in the reservoir. This article briefly introduced the mechanism of microbial oil recovery, the characteristics of the microbial oil production by self-screening, as well as the field application and the preliminary analysis of economic benefits. Through the analysis, the technology has a larger promotional value.