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subsea pipeline displacement
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subsea pipeline displacement
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海管置换
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subsea pipeline displacement
海管置换
管道停输后,为避免高凝点的原油凝固在管道内造成管道堵塞事故,而使用低凝点、低黏度介质将管内高凝点或高黏度介质替换出去的操作。
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