油田生产水系统溶气气浮水出口管线失效分析  

Failure Analysis of Dissolved Gas Floating Water Export Pipeline in Oilfield Production Water System

作　　者：童园 邹美初 华庆 吴泽东 宋洋 TONG Yuan;ZOU Mei-chu;HUA Qing;WU Ze-dong;SONG Yang(CNOOC Limited-Shenzhen EP Oilfied Operations,Shenzhen 518067,China;CNOOC Changzhou Paint&Coating Industry Research Institute Co.,Ltd.Changzhou 213016,China;Xi’an Maurer Petroleum Engineering Laboratory Co.,Ltd.Xi’an 710399,China)

机构地区：[1]中海石油(中国)有限公司深圳分公司恩平油田作业区,广东深圳518067 [2]中海油常州涂料化工研究院有限公司,江苏常州213016 [3]西安摩尔石油工程实验室股份有限公司,陕西西安710399

出　　处：《全面腐蚀控制》2024年第10期7-13,共7页Total Corrosion Control

摘　　要：本文对南海东部油田某平台生产水系统溶气气浮水出口管线开展失效分析工作。对失效样品的形貌、材质、力学性能、腐蚀产物进行分析,并进行了腐蚀模拟评价实验,本失效分析项目采用扫描电子显微镜(SEM)、X射线能谱分析仪(EDS)、数显维氏硬度计、直读光谱仪(OES)等设备,分析表明管线材质、力学性能及外防腐层满足要求,管线存在局部腐蚀的风险,在焊缝位置尤为严重,其腐蚀原因主要来自H_(2)S和CO_(2)的腐蚀,尤其需要关注H_(2)S的腐蚀。This paper presents the failure analysis of the outlet pipeline of the water system in South China Sea.To analyze the morphology,material,mechanical properties and corrosion products of the failed samples,And conducted the corrosion simulation evaluation experiment,This failure analysis project adopts scanning electron microscope(SEM),X-ray energy spectroscopy analyzer(EDS),digital display Vicker hardness meter,direct reading spectrometer(OES)and other equipment,The analysis shows that the pipeline material,mechanical properties and external anti-corrosion layer meet the requirements,Pipeline is at risk of local corrosion,In the weld position,The cause of its corrosion comes mainly from the corrosion of H_(2)S and CO_(2).Pay particular attention to the corrosion of H_(2)S.

关 键 词：失效分析 腐蚀 管线 H_(2)S CO_(2) 

分 类 号：TE985[石油与天然气工程—石油机械设备]