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目前在北海安装有约130座产油平台,到本世纪末可能还要安装100座。现有平台除8座系混凝土结构外,其余均为钢结构。有的高达200米以上,有的重几十万吨。但
There are currently about 130 oil production platforms installed in the North Sea and 100 may have to be installed by the end of this century. The existing platform in addition to 8-seat concrete structure, the rest are steel. Some up to 200 meters above, and some heavy hundreds of thousands of tons. but