该公司在一月为了维修而关闭了旗下四个布伦特油田平台：阿尔法、布拉沃、查理和德尔塔。
The company shut all four of its Brent platforms, Alpha, Bravo, Charlie, and Delta, in January for repairs.
北海油田的维修保养和乌拉尔原油市场的强劲也是布伦特原油贴水收窄的重要原因。
Maintenance at North Sea fields and a strong Urals crude market have also contributed to Brent's premium.
同时最近北海油田的停工维护也使得布伦特原油这片开采已久，原本已经供应量下降的油田更加雪上加霜。
Meanwhile recent maintenance shutdowns in the North Sea have worsened already declining supplies from ageing fields of Brent crude.
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