前　言本源微生物是地层中一定时期内在数量和种类上相对稳定的微生物群落。它是在油田开发过程中随含有大量细菌的注入水进入油层的。由于细菌种类等的差异 ,有的不适应地层环境而亡 ,有的转入休眠状态 ,也有少量的细菌通过自身调节而适应了恶劣的地层环境 ,并利用地层中有限? Preface The source microorganisms are microbial communities that are relatively stable in number and species over a period of time in the formation. It enters the reservoir with the injection of water containing a large amount of bacteria during oil field development. Due to the difference of bacterial species and others, some do not adapt to the formation environment and some go dormant, but also a small amount of bacteria adapt to the harsh formation environment through their own regulation and utilize the limited formation?