摘要
在大型江河定向钻穿越工程中,如何做好穿越管道的防腐层保护,避免管道穿越过程中防腐层的机械损伤,确保工程质量和后期运行安全,同时降低回拖阻力,提高穿越工程的施工效率,是目前设计和施工中需要解决的重要难题。以江都-如东天然气管道项目长江定向钻穿越工程为例,其是国内同管径中最长的大型江河定向钻穿越,工程投资大,质量要求高,为防范回拖过程中砾石层对穿越管道3PE防腐层磨损、划伤及补口套滑脱、撕裂两类主要风险并降低回拖阻力,引用环氧玻璃钢外防护层技术为穿越管道防腐层提供机械性能保护,现场人员结合设计开展环氧玻璃钢防护层涂覆工艺研究,并在该穿越工程大规模实际应用中取得了良好效果,可为今后同类型江河定向钻穿越工程的设计和施工提供借鉴与参考。
For directional drilling projects crossing large rivers, protection of corrosion-proof coating of pipelines against mechanical damages during crossing is a great consideration in current design and construction. It may help to guarantee the project quality and operation safety, reduce towback resistance and enhance efficiency of the project. The Yangtze River Crossing Project of Jiangdu-Rudong Natural Gas Pipeline involves direction drilling crossing large rivers with longest pipelines of identical diameter in China. This project is characterized by heavy investment and high quality requirements. To protect the 3PE coating of the pipeline against abrasion, scratching, disengagement and rupture of joint sleeves by gravel bed during towing, and to reduce resistance during towbaek, epoxy fiber reinforced plastics （FRP） coating has been deployed to provide mechanical protection. On-site operators performed studies on process of epoxy FRP coating, which has been deployed extensively in the crossing project and achieved outstanding performances. Relevant researches may provide references for design and imolementation of directional drilling oroiects crossing similar rivers. （5 Tables. I0 References）
出处
《油气储运》
CAS
北大核心
2015年第10期1115-1118,共4页
Oil & Gas Storage and Transportation
关键词
环氧玻璃钢防护层
定向钻
穿越管道
防护层技术
应用
epoxy fiber reinforced plastics （FRP） coating, directional drilling, crossing pipeline, coating technique,application
