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钻具旁通阀
钻具旁通阀一般配置在钻头上端,在正常钻进时只起一个配合接头的作用。当井下钻头无法实现正 常循环时,为防止卡钻等事故发生,将由该阀来实现外循环,使用方便,安全可靠。
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钻具旁通阀
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Drill Tool Bypass Valve
Bypass valve of drill tool is usually assembled on the top of bit serving as a sub during normal drlling.When downhole bit can not circulate regularly,bypass circulation will be carried out by this tool to prevent sticking of tool.This tool is easy and reliable in use.
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