Record all the drill pipe and casing pressure;
记录钻杆压和套压；
Meanwhile, MGV can low the maximum casing pressure.
MG V装置降低蜗壳进口压力最大峰值的作用。
It is a most popular and common occurrence that pressure changes in production casing.
在油气井中，油层套管内压力变化是最普遍、最常见的一种现象。
It is a most popular and common occurrence that pressure changes in production casing.
在油气井中，油层套管内压力变化是最普遍、最常见的一种现象。
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