1983年10月江汉油田设计院与油田处一起对广华油田区域性阴极保护的防腐效果进行了调查,其结果如下:①套管损坏率明显降低。该油田没采用阴极保护前,油、水井套管每年的损坏率是18%;保护后,从1979年到1983年6月,没再发现套管损坏;②站 In October 1983, Jianghan Oilfield Design Institute and Oilfield Service together investigated the preservative effect of the regional cathodic protection in the Guanghua Oilfield. The results are as follows: ① The casing damage rate was significantly reduced. Before the cathodic protection was applied in this field, the annual damage rate of oil and water well casing was 18%; after the protection, no casing damage was found again from 1979 to June 1983;