A perforating charge designed to provide a long perforation tunnel, such as may be required to bypass any near-wellbore damage.

为提供旁通近井地带损害等所需的长射孔孔道而设计的射孔弹。

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Unlike sand migration that is best stabilized, the material mobilized in fines migration should be produced to avoid near-wellbore damage.

与砂粒运移(它被充分地稳定处理)不同，在细粒运移中被调动的物质应被采出，以避免近井地带的损害。

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Meanwhile, reverse imbibitions water blockage effect would be appeared to further damage the near the wellbore formation, especially in the low permeability and low productivity condensate gas Wells.

同时，在近井带还会形成反渗吸水锁效应，从而进一步加剧近井带地层伤害，对低渗低产凝析气井，这一现象尤为严重。

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