深挖沟铺管技术在渤西南联网供气项目上的应用

Application of the Pipeline-Laying Technology for Deep Trenching on the Gas Pipeline Network System of Boxi & Bonan Oil/Gas Fields

海底管道的铺设有很多种挖沟方法,因海水深度,地质条件等情况的不同,采用的方法也不相同。渤西南联网供气项目为避免锚地的各类船只抛描破坏,保证海管的安全,海洋石油工程股份有限公司和天津俊昊海洋工程有限公司在海底管道铺设和后挖沟施工中进行合作,采用接触式潜水射流喷冲气举式挖沟机(此系专利设备),首次成功完成了国内海管埋深达到4米的深挖沟作业。通过这次深挖沟埋管的实施,证明这种新的工艺,可以应用到更多的海底管道深挖沟埋管工程中,也可以应用到海管穿越航道、锚地等类似的既要保护管道又要保证通航安全的管道施工工程中。

There is a great deal of methods in the submarine pipeline-laying, memous auopteu ~c u,, each other due to the various situations of seawater depth, geological conditions and so on. In order to avoid the damage by any kind of vessel anchoring at anchorage, and to ensure the safety of submarine pipelines, The project of the Gas Pipeline Network System of Boxi ＆ Bonan Oil/gas Fields is carried out by Offshore Oil Engineering Co., Ltd. （COOEC） and Tianjin Junhao Offshore Engineering Co., Ltd. （JHHG） by the use of the contact type submersible jet flow spray gas lift type trenching machine （it＇s the patent facility）, the submarine pipeline-laying and post-trenching works are first successfully completed with burial depth up tc 4m for domestic deep trenching operation pipeline with. It is shown that the initiate procedure could be applied to more deep trenching works of the submarine pipeline in the future through this methodologica description of the deep trenching, as well as could be recommended to that the submarine pipeline crossin~ sea-routes or the anchorage and the similar pipeline constructions which not only be able to protect pipeline： but also have to ensure the sea-route unobstructed.