卡瓦式封隔器
Model Y 441 B double anchoring packer is a single-slip double-cone packer, which adopts hydraulic setting and pipereleasing.
Y441B型双向锚定封隔器是一种单卡瓦及锥体锚定式封隔器, 它利用液压坐封、提放管柱解封.
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。
a brief analysis for setting problems of slip-type packer in cased well
卡瓦封隔器在套管井中不坐封原因浅析
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