1　引　言在油田开发过程中 ,水处理问题一直是一个不可忽视的重要问题 ,这主要表现在两个方面 :一是注入水的处理 ,要求注入的水质达标 ,不污染油层 ,满足注水开发的需要。二是采出水的处理 ,在高含水开发期 ,采出水的量很大 ,若不经处理 ,将对环境产生严重的污染 ,而且三次采 1 Introduction Water treatment has always been an important issue that can not be ignored in the process of oilfield development. This is mainly manifested in two aspects: First, the treatment of infused water requires that the injected water quality meets the standards and does not pollute the reservoir to meet the needs of waterflood development . Second, the production of water treatment, in the high-water development period, a large amount of water produced, if untreated, will have serious pollution to the environment, and three mining