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在石油生产过程中,为了维持地层压力以利原油采出,必须不断向地下注水。从油井采出的原油中,通常都含有较多的水,尤其是处于中、后期开采的油井,采出的原油中含水量一般都在50％左右,有的甚至高达80％以上,这部分水从原油中分离出来后就称作油田污水。为了防止造成环境污染和节约水源,目前国内绝大多数油田均采用一定工艺将油田污水回注到地层中去。但由于油田污水矿化度高,溶解有多种可引起腐蚀的气体和含有细菌,因此油田污水的腐蚀性比
In the process of oil production, in order to maintain the pressure of the formation to facilitate the production of crude oil, water must be constantly poured into the ground. The crude oil produced from the well usually contains more water, especially in wells drilled in the middle and later stages. The crude oil that is taken out generally has a water content of about 50%, and some even reaches as high as 80% or more. This part Separation of water from crude oil is called oilfield wastewater. In order to prevent environmental pollution and water conservation, at present, most of the oilfields in China use a certain technology to inject oilfield wastewater into the strata. However, due to the high degree of salinity of oilfield sewage, dissolving a variety of gases that can cause corrosion and bacteria, the corrosiveness of oilfield wastewater