天然气与石油2019，Vol.37Issue(6)：22-29,8.DOI:10.3969/j. issn. 1006-5539.2019.06.004
恶劣海况下大埋深输气管道应急修复技术
Emergency Repairing Technology for Gas Pipeline with Large Buried Depth Under Severe Sea Conditions
摘要
Abstract
The total mileage of China’s submarine oil and gas pipelines has exceeded 6, 500 kilometers. Sudden pipeline damage incidents caused by pipeline corrosion, external forces and natural disasters often occur. How to select a quick and effective repairing plan according to the type of damage incidents is the key to improve repairing efficiency, reduce operational risk and reduce economic losses. Combining with the repairing project of crack damage of the gas pipeline in an oil and gas field in the East China Sea, and aiming at the severe sea condition and crack-intensive characteristics of the damaged pipeline, the repairing scheme with clamp is innovatively designed. The scheme breaks through the size limitation of clamp and makes reasonable selection of clamp for repair, so that one clamp can successfully plug two leakage points. Making and using simulation framework of clamp effectively reduces the cleaning workload of pipeline anticorrosive coating and ensures the clamp installation accuracy. The clamp installation method of fixture is innovated to avoid the construction risk brought by severe sea conditions. In the final practice, the reliability of this repairing scheme is proved, which provides a new idea for similar submarine pipeline repairing projects in the future.关键词
海底管道/裂纹损伤/恶劣海况/漏点/模拟框架/卡具/修复Key words
Submarine pipeline/ Crack damage/ Severe sea condition/ Leakage points/ Simulation framework/ Clamp/ Repair引用本文复制引用
于银海,成二辉,刘朋,王绍则..恶劣海况下大埋深输气管道应急修复技术[J].天然气与石油,2019,37(6):22-29,8.基金项目
海洋石油工程股份有限公司科研项目"特殊环境下海底管道维修方法研究"(E-0817 U 015) （E-0817 U 015）
