含凝析油天然气管道动火安全参数计算  

The calculation of parameter security in the natural gas pipeline with gasol

作　　者：兰洪强[1] 梁政[1] 屈锐 蒲继平 刘利 王喜娟[4] 

机构地区：[1]西南石油大学石油天然气装备教育部重点实验室,四川成都610500 [2]中国石油管道西安输油气分公司,陕西西安710018 [3]中海油能源发展有限公司天津分公司,天津300000 [4]中国石油长庆油田分公司第二采气厂,陕西榆林719000

出　　处：《石油化工应用》2011年第10期8-11,共4页Petrochemical Industry Application

基　　金：中国石油天然气集团公司长庆油田分公司和石油天然气装备教育部重点实验室资助项目;项目编号:2010STS06

摘　　要：天然气管道在停输泄压进行焊接修复时涉及到惰性气体置换,残余油气的爆炸极限作为置换程度的重要判据,在残余油气隔离技术中残余油气的蒸汽压与凝析油系统中主要易燃物质的燃烧特性直接影响油气隔离技术的参数确定。笔者在对长庆油田榆林地区三个采气厂的凝析油样品成分分析的基础上,得出在天然气置换动火时必须将管道内残余油气含量控制在0.859%以内以及油气隔离设备至少承压0.1 MPa才能保证安全施工的结论,对舍凝析油系统的天然气管道置换动火、管道油气隔离技术有重要意义。During the off transmission and dec ompression repair of pipeline, it refers to cleaning line using shielding gas. Explosive limit is considered to be a important criterion, in the technology of insulating the remnant oil and gas, the vapor pressure directly affects the effect of insulating, while, the burning performance of flammable component in the remnant oil and gas is the ultimate criterion in evaluating the performance of gasol. The author analyses the gasol sample that come from three natural gas treatment plants in YuLin area of Changqing oilfield and come to conclusion that maxim vapor pressure is 0.10 MPa and also gain the explosive limit of the remnant oil and gas the pipeline. This conclusion has significance to cleaning line using shielding gas, bearing pressure in insulating the remnant oil and gas, evaluating the performance of gasol.

关 键 词：天然气管道 燃烧特性 蒸汽压 凝析油 

分 类 号：TE832.2[石油与天然气工程—油气储运工程]