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If any gas concentration is located above the primary casing shoe level or the conductor
pipe shoe level (the levels being determined during the drilling program design), it should
be avoided. This is because neither of these holes are drilled under BOP control and,
therefore, there is a risk of seabed cratering around the well which could result in the
undermining of the footings in the event of a blow out (1 & 2).///
以上讲海底浅层气的是什么意思？ |
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发表于 2009-4-12 09:19
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