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。
Mechanisms, parameter computations and suitable scopes about hydraulic perforating are all analyzed in this paper.
分析了水力射孔的破岩原理、参数计算以及适用范围。
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