摘要
在气田的快速发展过程中,随着采出水的逐渐增加和集输管线服役年限的延长,腐蚀问题层出不穷,尤其是刺漏穿孔频次呈逐年上升趋势。针对内腐蚀严重的问题,目前国内外主要采用“定期清管、缓蚀剂预膜及喷注”的方法进行防治。但是目前还未建立合理的集输管道缓蚀剂加药制度,相关的工艺技术流程大多依赖工程经验,其技术体系还缺乏相应的理论指导和评估标准,导致缓蚀剂加注存在适应性差、耗剂量大、膜质量控制难等技术难题。因此亟需开展缓蚀剂加注方案的优化工作,逐步完善缓蚀剂加注技术体系,形成适合现场工况的缓蚀剂加注方案和技术规程,降低气田集输管道内腐蚀程度和刺漏穿孔频次,从而实现缓蚀剂应用与管理的提质增效。为此,总结了缓蚀剂的加注工艺、缓蚀效率评价技术、缓蚀剂现场加注有效性存在的问题以及未来发展趋势,以为气田集输管道缓蚀剂加注技术提供一定的参考。
In the rapid development of gas fields,with the gradual increase in produced water and the extended service life of gathering and transportation pipelines,corrosion issues have become increasingly prominent.Especially the frequency of punctures and perforations is increasing year by year.In response to the serious problem of internal corrosion,the main methods for prevention and control at home and abroad are"regular pigging,pre-filming with corrosion inhibitors,and spraying".However,a reasonable system for adding corrosion inhibitors to gathering and transportation pipelines has not yet been established,and most of the related technological processes rely on engineering experience.The technical system lacks corresponding theoretical guidance and evaluation standards,resulting in technical difficulties such as poor adaptability,high dosage consumption and difficulty in controlling the quality of the protective film in the injection of corrosion inhibitors.Therefore,there is an urgent need to optimize the injection schemes of corrosion inhibitors,gradually improve the corrosion inhibitor injection technology system,develop injection schemes and technical procedures suitable for field conditions,and reduce the degree of internal corrosion and the frequency of punctures and perforations in gas field gathering and transportation pipelines.This will enhance the quality and efficiency of corrosion inhibitor application and management.In this paper,the injection process of corrosion inhibitors,the evaluation technology of corrosion inhibition efficiency,existing problems in the effectiveness of on-site injection of corrosion inhibitors and future development trends were summarized to provide references for the technology of corrosion inhibitor injection in gas field gathering pipelines.
作者
刘诗桃
周军
梁光川
万伟
刘岳龙
彭思洲
吕茜娣
LIU Shitao;ZHOU Jun;LIANG Guangchuan;WAN Wei;LIU Yuelong;PENG Sizhou;LYU Xidi(School of Petroleum and Natural Gas Engineering,Southwest Petroleum University,Chengdu 610500,China;Gas Production Plant No.1,Sinopec North China Oil&Gas Branch,Yulin 719000,China;Petroleum Engineering Technology Research Institute,Sinopec North China Oil&Gas Branch,Zhengzhou 457001,China)
出处
《材料保护》
CAS
CSCD
2024年第5期119-127,共9页
Materials Protection
关键词
集输管道
缓蚀剂
腐蚀监测
有效性
gathering and transportation pipeline
corrosion inhibitor
corrosion monitoring
validity
