Maintenanceat North Sea fields and a strong Urals crude market have also contributed to Brent's premium.
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。
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How can we ensure high technical standards of design, manufacture, construction, maintenance, operation and performance that enhance the safety of life and property atsea?