drilling pipe in rotation 转动钻具
rotation drill pipe protector 旋转钻杆保护器
non-rotation drill pipe protector 非旋转钻杆保护器
Drilling parameters typically include flow rate, pump pressure, standpipe pressure (SPP), pipe rotation (RPM), weight on bit (WOB), rate of penetration (ROP) and pit volume (PVT).
流量、泵压、钻压以及机械钻速等常用钻井参数还可用于监测井涌和泥浆漏失。
Butterfly valve through the valve shaft rotation to drive the rotation of a disc-shaped disc, to open and close a valve, cut off from the main pipe and throttle with.
进口蝶阀是指通过阀轴旋转来带动一个圆盘形的蝶板的转动，达到开启与关闭的一种阀门，在管道上主要起切断和节流用。
When the pump is first started, rotation of gears forces air out the casing and into the discharge pipe.
当泵首次启动时，齿轮的旋转迫使空气离开壳体进入排油管。
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