由于固定平台难以移动，因而它主要用于已发现的海上油气田的开发钻井。
Because it is hard to move a fixed platform, it is used primarily in development drilling over known offshore fields.
自升式钻井平台属于海上移动式平台，由于其定位能力强且作业稳定性好，在大陆架的勘探开发中居主力军地位。
As a mobile ocean platform, and owing to its high positioning capacity and good operation stability, the self-elevation drilling platform takes a leading role in continetial shelf exploration.
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