特别的是由一个迷宫式组件来防止少数的液体回漏。
Special deign is the maze - design subassembly to prevent leakage of circumfluence.
特别的是由一个迷宫式组件来防止少数的液体回漏。
Special deign is the maze-design subassembly to prevent leakage of circumfluence .
超深探井在钻进过程中出现套管挤毁、井漏而常规封堵无效等复杂问题，影响了下一步正常钻进，短回接尾管固井技术能很好地解决该技术难题。
The short liner cementing technique can successfully solve some difficult technical problems, such as casing collapse, loss circulation during ultra deep exploratory well drilling operations.
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