据11月1日OGJ报道，挪威国家石油公司(Norske Shell)与斯伦贝谢(Schlumberger)有限公司OneSubsea签订了工程、采购、施工和安装合同框架协议，为挪威海Ormen Lange天然气凝析气田提供海底多相压缩系统。
于1997年发现的Ormen Lange气田，已与位于挪威Aukra自治市Nyhamna的用于处理和出口天然气的陆上工厂联合开发，在800-1100米水深的海底设施中开采天然气并进行加工和出口。通过海底多相压缩系统，有望提高天然气和凝析油的采收率。
水下多相压缩系统由OneSubsea和Subsea 7将提供并安装，该系统将使用业界唯一的水下多相压缩技术。
在第一阶段，OneSubsea将对系统进行工程设计。在许可证组做出最终投资决定后，将完全按照合同所规定的的条款内容执行。
压缩系统的回接距离将打破从陆上设施向海底设备传输变速电力的世界纪录，该系统将由距海底120公里的Nyhamna电厂提供动力和控制。
该系统将安装在850米深的水下，包括两个16兆瓦的水下压缩站，与现有的管汇和管道相连。该多相压缩系统具有抗喘振能力，并且能够适应各种不同的条件。
王佳晶 摘译自 OGJ
原文如下：
Norske Shell signs frame agreement for Ormen Lange
AS Norske Shell let a frame agreement for an engineering, procurement, construction, and installation contract to OneSubsea, a Schlumberger Ltd. company, for the supply of a subsea multiphase compression system for Ormen Lange natural gas-condensate field in the Norwegian Sea.
Ormen Lange field, discovered in 1997, has been developed with seafloor installations in 800-1,100 m of water in combination with an onshore plant at Nyhamna in Aukra municipality in Norway for processing and exporting gas. The field is produced through four seabed templates. Compression on the field is expected to increase the recovery of gas and condensate.
Through the contract, OneSubsea and Subsea 7 will supply and install a subsea multiphase compression system that uses the industry’s only subsea multiphase compression technology.
In Phase 1, OneSubsea will engineer and design the system. Following a final investment decision by the license group, the complete scope of the contract will be executed.
To be powered and controlled from the Nyhamna plant 120 km from the subsea location, the tieback distance of the compression system will break a world record for transmitting variable speed power from an onshore facility to equipment on the seafloor.
The system will be installed in 850 m of water and comprises two 16-Mw subsea compression stations tied into existing manifolds and pipelines. This multiphase compression system is surge tolerant, does not require well-stream preprocessing, and is adaptable to varying conditions.
