But in case it has to evacuate the area around the damaged well, which lies some 50 miles off the Louisiana coast, BP also placed a special plug inside the well's casing.
但是为了预防，必须从离路易斯安那海岸大约50英里的毁坏的油井附近区域撤离，BP也在油井盒里放置了一个特殊的塞子。
Because the limit of special casing program of sidetracking well and horizontal well, the fishing success ratio of conventional little junk fisher is low.
由于侧钻井、水平井特殊井身结构限制，常规的小件落物打捞器打捞成功率低。
Because the limit of special casing program of sidetracking well and horizontal well, the fishing success ratio of conventional little junk fisher is low.
由于侧钻井、水平井特殊井身结构限制，常规的小件落物打捞器打捞成功率低。
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