锦州20—2凝析气田海底管道干燥技术  

Drying Technology of Subsea Pipeline at JZ20-2 Gas Field

作　　者：杜永军[1] 秦立成[1] 叶宏平 冷志[1] 李斌[1] 

机构地区：[1]海洋石油工程股份有限公司,天津300452

出　　处：《中国造船》2013年第A01期276-279,共4页Shipbuilding of China

摘　　要：锦州港是我国北部沿海的重要商港，其航道穿越锦州20．2凝析气田登陆管线，为满足锦州港扩建工程，对锦州20．2凝析气田登陆管线进行了改造。海管改造完成后，进行干燥投产。在国内外海底管道干燥工艺分析比较的基础上，结合锦州凝析气田实际情况，确定了锦州20．2海底管道干燥方案。根据锦州20．2天然气水合物形成特性和海管干燥方案，对清管干燥列车的乙二醇浓度进行计算分析，确定了锦州20．2天然气管线干燥工艺，实现了锦N20．2凝析气田安全、快速投产。该技术可供今后海底管道干燥投产借鉴。Jinzhou port is an important and commercial port in North China. Shipping lane of this port crosses over the offshore pipeline of JZ20-2 gas field. In order to meet the requirement of Jinzhou port expansion project, the depth of burial for part of offshore pipeline of JZ20-2 should be increased. The offshore pipeline has been relocated during the overhauling period of JZ20-2 gas field, and then pipe drying process should be carried out. Based on a comparison between various offshore pipeline drying processes, JZ20-2 offshore pipeline drying scheme is decided according to the practical situation of JZ20-2 gas field. In accordance with the drying scheme and formation property of gas hydrate, calculation of MEG concentration in drying train is carried out, drying process of JZ20-2 offshore gas pipeline is worked out, and quick and safe production for JZ20-2 gas field is achieved.

关 键 词：海底管道 清管器 乙二醇干燥 天然气水合物 干燥剂 

分 类 号：TE372[石油与天然气工程—油气田开发工程]