This paper introduce gas Mass Flow Controller principle of operating application for core permeability detection and some factors that influence its test performance.
本文介绍气体质量流量控制器的工作原理和在岩心渗透率测试中的应用，以及影响其测试性能的几个因素。
One of the main methods to test the gas permeability is using partial pressure difference.
用压差法测试塑料薄膜的透气性，是一个长期使用的主流测试方法。
There exist big differences in studied result with different test methods for dense reservoir rock in low permeability gas pool is sensitive to the stress.
致密低渗气藏开发过程中储集层存在应力敏感，不同的试验方法评价结果差异很大。
应用推荐