天然气输送钢管研究与应用中的几个热点问题  

Highlights of Research and Application of Gas Transmitting linepipe

作　　者：李鹤林[1] 

机构地区：[1]中国石油天然气集团公司石油管材研究所,西安710065

出　　处：《焊管》2000年第3期43-61,共19页Welded Pipe and Tube

摘　　要：全面阐述了天然气输送钢管研究与应用中的热点问题 ,包括 :高压输送与高钢级管线钢的研究开发 ;抗 HIC管线管及其技术条件 ;富气输送及其对钢管的性能要求 ;直缝埋弧焊管和螺旋缝埋弧焊管的比较与选择 ;输气钢管延性断裂的止裂 ;管线在近中性 p H土壤环境中的应力腐蚀开裂 ;管线管的残余应力及控制 ;高强度管线钢的屈强比问题 ;在役管道的适用性评价及风险管理等。针对我国“西气东输”和跨国天然气管道建设 ,提出了我国干线输气管道应逐步采用高压输送和富气输送 ,继续坚持油气输送干线用钢管以国产螺旋焊管为主的技术路线 (一、二类地区采用国产螺旋焊管 ,三、四类地区采用直缝埋弧焊管 ) ,对螺旋焊管生产线进行技术改造 ,有限度配套发展用于油气输送的直缝埋弧焊管 ,积极开展高钢级和抗 HIC管线管的研究开发 ,积极研究和制订“西气东输”螺旋缝埋弧焊管和直缝埋弧焊管技术条件 ,加强管线的断裂、疲劳和止裂研究 ,组织开展近中性 p H土壤环境中的应力腐蚀开裂研究 。This article introduces the development of high pressure gas transmitting and high grade pipeline steel abroad. Through the description and analysis of line pipe anti-HIC technical condition, rich gas transmitting and the property requirements for the line pipe, ductility anti-crack, pipeline SCC in neutral pH earth, line pipe residual stress and its control, Y/T ratio of the high strength pipeline steel, the author gives the direction of adopting high pressure and rich gas transmitting in main pipeline, insisting the oil and gas transmitting main pipeline using SSAW pipe in Ⅰ Ⅱ area and LSAW pipe in Ⅲ Ⅳ area. The technical reform shall focus on the adoption of Tack welding and Final welding process, improve the forming power, increase mechanical expansion process, perfect the NDT methods. It also proposes the evaluation of the application and risk management of pipeline service, developing the research of risk management.

关 键 词：高压输送 管线钢 管线管 富气输送 天然气输送 

分 类 号：TE973.04[石油与天然气工程—石油机械设备]