The first relief well being drilled to allow the gushing BP well in the Gulf of Mexico to be capped is only 300ft from its target depth, having sunk to a total of about 17,710ft through water and rock, the US authorities said on 7 July.
美国有关政府部门7月7日表示，为封堵英国石油(BP)在墨西哥湾喷涌不已的油井而钻造的第一口减压井，已经穿过海水和岩层，潜至约17710英尺的深度，距离目标深度只剩300英尺。
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