A type of packer that USES an inflatable bladder to expand the packer element against the casing or wellbore.
利用可膨胀胶囊使封隔器密封元件紧靠套管或井筒的一种封隔器。
Packing element shoulder protection and large locking structure improves the properties of the packer.
封隔元件肩部保护结构和定位大锁块的采用，提高了封隔器的密封、坐封和解封性能。
The accurate theoretic analysis, numerical simulation and measuring test of slip element were very difficult for oil packer systems because of the sharp teeth.
由于封隔器卡瓦的尖齿结构，使卡瓦的理论分析、数值模拟分析和试验测试研究等都非常困难。
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