多频管中电流法防腐层检测评级参数影响研究  

Study on the Parameters Rating Impact of Coating Inspection Using Multipipe Current Method

作　　者：刘安琪[1] 欧阳君 马军[3] 张松钊[4] 魏纳[1] 

机构地区：[1]西南石油大学研究生院,四川成都610500 [2]塔西南勘探开发公司,新疆泽普844804 [3]塔里木油田销售事业部,新疆库尔勒841000 [4]长庆油田输油二处,甘肃庆阳745205

出　　处：《安全、健康和环境》2009年第4期23-25,共3页Safety Health & Environment

基　　金：四川省科技攻关计划(中俄合作)项目(05GG021-021)资助

摘　　要：多频管中电流法通过计算管道防腐层绝缘电阻来判断管道外防腐层的状态,近年来得到较为广泛的应用。但对于丘陵山地的埋地输油气气管道,其评价结果与实际状态有一定差距。通过研究发现,评价结果与实际状态不符的主要原因是:管道分布电容、管道分布电感在GDWFF处理软件中对防腐层评价结果影响较大,尤其是管道分布电感是关键参数。为此,修正了多频管中电流法评价软件给出的管道分布电感推荐值,并采用现场开挖的方式进行验证,说明评价结果更符合山地实际。PCM （multi-frequency method） through the pipeline coating calculation to determine pipe insulation resistance, coating the state in recent years in the pipeline inspection is more widely used. However, for the oil and gas pipelines are buried in the hill and mountain area, the evaluation results are not confirm to the actual conditions. Through the study, the main causes are distribution channels and capacitors, induetors in the distribution pipeline GDWFF processing software in the preservation of a greater impact on results. Moreover, the distribution channel is the impact of inductance L Coating insulation resistance evaluation of key parameters. The amendment of the multi-frequency method software is distributed inductance recommended so that the PCM test results of the evaluation are more confirm to the actual results by onsite inspection for verification.

关 键 词：防腐层 多频管中电流法 评级参数研究 

分 类 号：TE978[石油与天然气工程—石油机械设备]