阀驱气
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缸顶阀驱气 valve-in-head scavenging
驱气阀 scavenging valve
转动驱气阀 rotary scavenging valve
阀调节孔驱气 valve controlled port scavenging
旋转式驱气阀 rotary scavenging valve
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摘要 ： 针对注气井CO2气窜而造成生产井气油比上升，常规管式泵游动阀打不开而导致的“气锁”问题，研制了CO2驱中空强制拉杆式防气泵。
Abstract : To address the issue of "gas lock" caused by CO2 gas-channeling in gas injection wells, the forced pull rod type hollow gas prevention pump for CO2 flooding has been developed.
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