试油中常见的井壁污染大致有三种。一是泥浆的污染,二是油井结蜡的污染,三是井壁不规则。本文通过对这三种污染机制的说明,结合实例分别说明泥浆滤饼、原油结蜡和井壁不规则对试油工作的具体影响,介绍目前我们防止和处理这些污染的方法。最后根据实际情况介绍一些防止和清理方法。 There are basically three types of borehole pollution that are common in oil testing. First, the pollution of mud, the second is oil well wax pollution, and third, the irregular wall. This paper describes the three pollution mechanisms, combined with examples of mud cake cake, crude oil waxing and wall irregularities on the specific impact of oil testing, describes our current methods to prevent and deal with these pollution. Finally, according to the actual situation to introduce some methods to prevent and clean up.