Nitrogen gas with different displacing velocity and pressure was used to displace the core in testing, the permeability damage and correlation analysis caused by velocity sensitivity were obtained.

实验用氮气以不同的驱替速度和驱替压差驱替岩心，得到由速敏性引起的渗透率损害及相关分析结果。

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Oilfield application obtained better results. For low pressure and low permeability hydrocarbon reservoirs, especially gas well, this perforating completion process has important application value.

通过现场应用取得了较好的效果，该工艺技术对低压、低渗油气藏特别是气井的射孔完井具有重要应用价值。

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Hollow fiber membranes with good gas permeability can be obtained after the extraction of the paraffin oil and stretching to a small extension.

将石蜡油提取掉后稍加拉伸即可得到透气性很好的微孔中空纤维渗透膜。

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