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子洲气田洲X站所在地区气候干旱,土壤电阻率高,管网改扩建频繁,气田水中Cl-含量及矿化度较高,使得原阴极保护设计不能满足后期管网保护需要.总结了洲X站阴保系统运行中存在的问题,并综合采用电位法、PCM漏电率测量法和接地电阻测量仪法对绝缘接头进行检测,逐项分析判断洲X站阴极保护系统失效的原因,并有针对性地提出采取使用深井辅助阳极、抬升绝缘接头高度并使用内壁绝缘涂层、接线器连接电缆及智能数据传输4项技术措施,有效地解决了洲X站输气管道阴极保护系统辅助阳极电阻大、绝缘接头失效、电缆易损坏以及输出调节滞后等问题,提高了输气管道的抗腐蚀能力.“,”Zhou-X Gas Gathering Station of Zizhou Gasfield is located in an area which is characterized by dry climate,high soil resistivity,frequent network transformation/expansion,and high salinity and Cl-in water.Consequently,original design of cathodic protection cannot meet the demands of pipeline protection in later stages.This paper reveals the existing problems in cathodic protection system of Zhou-X Gas Gathering Station,including high resistance in auxiliary anode,failure of insulation joints,damages in cables and delays in export regulating,and analyzes the causes for its failure by testing insulation joints using potential method,PCM leakage measurement and grounding resistance measurement techniques.Moreover,some technical solutions,such as deep-well anode,uplifting the height of insulating flange,spraying insulating coating on inner walls,connecting cables with wire connector and using intelligent data transmission,are proposed to solve above problems,and eventually improve the corrosion resistance of gas pipeline.