...ure suction ; suction duration ; Suction drainage 负压射孔 reverse-pressure perforating ; negative pressure perforating ; perforating with negative pressure ; Underbalance perforating 负压导管 negative pressure catheter ..
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To solve this problem we developed a high negative pressure and confining pressure-free perforating process.
无围压射孔技术就是研究在高负压甚至无围压条件下实现射孔完井。
The negative pressure for under balanced perforating is a key parameter in well perforating design. It can directly influence the productivity and borehole stability of a perforated well.
负压射孔技术的关键参数之一就是负压差的大小，它直接影响油井射孔完成后的产能以及孔眼的稳定性。
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