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一、前言在二次采油过程中,原油的含水量不断增高,特别是到了注水采油晚期,出水率可高达80～90%。这种污水的矿化度高(几千至十几万mg/1),并溶有氧、二氧化碳和硫化氢等气体,给输水管线和设备带来严重的腐蚀破坏。人们从生产实践中对溶解氧所造成的危害已有足够的认识,许多油田将输水系统由敞式改为闭式,并通过机械的和化学的方法除氧,大大降低水中的氧含量,以减
I. Introduction In the process of secondary oil recovery, the water content of crude oil is continuously increasing, especially to the late injection and oil recovery, the water yield can be as high as 80-90%. This sewage has a high degree of mineralization (thousands to hundreds of thousands of mg / 1) and dissolves gases such as oxygen, carbon dioxide and hydrogen sulfide, causing severe corrosion damage to the water distribution lines and equipment. People from the production practice on the harm caused by dissolved oxygen has been sufficient knowledge of many oil fields will be the water system from open to closed, and through mechanical and chemical methods of oxygen, greatly reducing the oxygen content of water, To reduce