高含硫气田开发腐蚀控制关键技术进展与发展方向  

Key technologies for corrosion control in high-sulfur gas field:Review and prospect

作　　者：闫静[1,2,3] 文绍牧 喻智明 沈萍[5] 莫林 徐磊 曾德智[6] 徐婧源 YAN Jing;WEN Shaomu;YU Zhiming;SHEN Ping;MO Lin;XU Lei;ZENG Dezhi;XU Jingyuan(Natural Gas Research Institute,PetroChina Southwest Oil&Gasfield Company,Chengdu,Sichuan 610213,China;National Energy R&D Center for High Sulfur Gas Reservoirs,Chengdu,Sichuan 610051,China;CNPC High Sulfur Gas Reservoir Exploitation Pilot Test Base,Chengdu,Sichuan 610213,China;PetroChina Southwest Oil&Gasfield Company,Chengdu,Sichuan 610051,China;Gas Company of PetroChina Southwest Oil&Gasfield Company,Chengdu,Sichuan 610051,China;SouthWest Petroleum University,Chengdu,Sichuan 610500,China;Institute of Gas Gathering and Transportation Engineering Technology,PetroChina Southwest Oil&Gasfield Company,Chengdu,Sichuan 610041,China)

机构地区：[1]中国石油西南油气田公司天然气研究院,四川成都610213 [2]国家能源高含硫气藏开采研发中心 [3]中国石油高含硫气藏开采先导试验基地 [4]中国石油西南油气田公司 [5]中国石油西南油气田公司燃气分公司 [6]西南石油大学 [7]中国石油西南油气田公司集输工程技术研究所

出　　处：《天然气工业》2024年第11期136-148,共13页Natural Gas Industry

基　　金：中国石油西南油气田公司科研项目“高含硫集输系统新工艺、新材料应用适应性研究”(编号:20230305-04);中国石油西南油气田公司博士后工作站科研项目“高含硫气田地面管线硫化物应力开裂临界应力及无损检测技术研究”(编号:2024D105-01-01)。

摘　　要：随着四川盆地高含硫气田的持续上产,深层/超深层、特高含H2S气体等愈发恶劣的工况环境对气田腐蚀控制提出了更高要求。围绕高含硫气田腐蚀控制难点及需求,系统梳理总结了近年来高含硫气田在材料腐蚀分析与评选、缓蚀剂防腐、腐蚀监/检测、腐蚀控制管理信息化4大方面取得的腐蚀控制技术最新研究进展和开发效果,提出了腐蚀控制关键技术的发展方向和建议。研究结果表明:①形成了H2S分压大于1 MPa条件下的腐蚀分析和耐蚀材料评选技术体系,建成了国内唯一高含硫气田腐蚀与防护现场试验基地,支撑了国产化双金属复合管、耐蚀合金的大规模应用;②自主研发了集输系统碳钢配套用长效膜缓蚀剂、抑泡缓蚀剂和防冻缓蚀剂新体系并实现了国产化工业应用,性能较国际同类产品提高16%,同步解决了易发泡、水合物堵塞等生产问题;③研发了钢质管道全线腐蚀风险分布定量评价技术,形成了基于腐蚀单元划分及风险排序的野外远程在线集群监/检测体系,实现了全区域、全系统、全流程覆盖;④建立了腐蚀异常数据智能识别和腐蚀地图构建技术,自主研发了具备大数据管理、腐蚀预测、风险评估及实时预警、腐蚀控制管理功能的腐蚀智能诊断与管控平台,形成了腐蚀信息化管理能力。结论认为,中国高含硫气田腐蚀控制技术已全面实现国产化,建议在金属/非金属耐蚀新材料全生命周期适应性、多因素耦合下腐蚀机理、多功能缓蚀剂研发、腐蚀智能化管控应用等方面加强技术攻关,强化科研生产一体化和生产运行腐蚀综合管理,助力中国高含硫气田开发迈上新台阶。Along with the continuous production of high-sulfur gas fields in the Sichuan Basin,the harsh working conditions,for instance,in(ultra-)deep development and with extremely high H2S content,have raised stringent requirements for corrosion control.This paper reviews the recent researches in respect of corrosion control in high-sulfur gas fields,especially in four aspects:material corrosion analysis and assessment,corrosion inhibitor protection,corrosion monitoring/inspection,and informationization of corrosion control management,and proposes the prospect of key technologies for corrosion control.The following results are obtained.First,a technical system for corrosion analysis and corrosion-resistant material selection under the condition of H2S partial pressure greater than 1 MPa is established and the only field test base for corrosion control in high-sulfur gas fields in China is built,which support the large-scale application of domestic double-metal composite pipes and corrosion-resistant alloys.Second,a new group of long-lasting film corrosion inhibitor,foam suppression corrosion inhibitor,and anti-freezing corrosion inhibitor for carbon steel in the gathering and transportation system was independently developed and has been applied for domestic industrial purpose.These products demonstrate a performance of 16%higher than international equivalents,and help address the problems in production,such as foaming and hydrate plugging.Third,a quantitative evaluation technology for corrosion risks across steel pipelines is developed,and a field remote online cluster monitoring/inspection technology based on corrosion unit division and risk ranking is formed to allow for regional,system-wide,and whole-process coverage.Fourth,technologies for intelligent identification of corrosion anomaly data and corrosion mapping are developed,and an intelligent corrosion diagnosis and control management platform with capabilities of big data management,corrosion prediction,risk assessment&early warning,and corrosion control managem

关 键 词：高含硫 腐蚀控制 材料评选 缓蚀剂 腐蚀监/检测 信息化 腐蚀风险分布 定量评价 

分 类 号：P755.3[天文地球—海洋科学] TE98[石油与天然气工程—石油机械设备]