川渝管道受高压直流干扰下排流效果规律研究与应用  

Research and Application on the Drainage Effect of Sichuan Chongqing Pipeline Underhigh Voltage DC Interference

作　　者：钟雪 张文艳 邓子为 刘宇豪 肖雯文 刘茜文 ZHONG Xue;ZHANG Wen-yan;DENG Zi-wei;LIU Yu-hao;XIAO Wen-wen;LIU Qian-wen(Gas Company of Southwest Oil&GasField Company PetroChina,Chengdu 610000,China;Petrochina Southwest Oil and Gas Company Tight Oil and Gas Exploration and Development Project Department,Chengdu 610000,China;Huayou Company,PetroChina Southwest Oil&Gas Field Company,Chengdu 610000,China;Sichuan Jiacheng Petroleum&Gas Pipeline Quality Inspection Co.,Ltd.Chengdu 610000,China;Tianjin Zenith Oil&Gas Engineering Co.,Ltd.Sichuan Branch,Chengdu 610000,China)

机构地区：[1]西南油气田分公司集输工程技术研究所,四川成都610000 [2]西南油气田分公司致密油气勘探开发项目部,四川成都610000 [3]西南油气田公司华油公司,四川成都610000 [4]四川佳诚油气管道质量检测有限公司,四川成都610000 [5]天津市振津石油天然气工程有限公司四川分公司,四川成都610000

出　　处：《全面腐蚀控制》2024年第11期12-17,共6页Total Corrosion Control

摘　　要：为了掌握高压直流干扰防护措施的有效性,通过CDEGS计算软件,依托于某接地极实际设计情况建模,分析了管道受高压直流接地极干扰影响时锌带排流与强制排流两种防护方式的特点及缓解规律,分析结果表明:(1)单一的锌带排流不能充分缓解干扰,有效缓解距离与铺设锌带长度呈正相关关系;(2)强制排流的缓解效果明显,但远端的位置反而会增加干扰风险;(3)强制排流及锌带排流的联合防护方式能有效抑制干扰影响;(4)针对长距离管道,建议先采用强制排流进行长距离干扰抑制,再局部铺设锌带进行辅助排流。In order to understand the effectiveness of high-voltage direct current interference protection measures,CDEGS calculation software was used to model the actual design of a certain grounding electrode.The characteristics and mitigation laws of zinc strip discharge and forced discharge protection methods for pipelines affected by high-voltage direct current grounding electrode interference were analyzed,The analysis results indicate that:(1)A single zinc strip discharge cannot fully alleviate interference,and the effective relief distance is positively correlated with the length of the zinc strip laid;(2)The relief effect of forced drainage is significant,but the remote location actually increases the risk of interference;(3)The combined protection method of forced discharge and zinc strip discharge can effectively suppress interference effects;(4)For long-distance pipelines,it is recommended to first use forced drainage for long-distance interference suppression,and then locally lay zinc strips for auxiliary drainage.

关 键 词：高压直流干扰 阴极保护 缓解规律 防护措施 

分 类 号：TE988[石油与天然气工程—石油机械设备]