三点式近钻头扩眼器
three point near-bit reamer
three point neat-bit reamer
管下扩眼偏心钻头
eccentric underreaming bit
六点式井底扩眼器
six point bottom hole reamer
三点式井底扩眼器
three point bottom hole reamer
三点式稳定扩眼器
three point stabilized reamer
三点式旋转扩眼器
three point rotary reamer
三点式钻柱扩眼器
three point string reamer
三牙轮扩眼器
three-point roller reamer
水力扩眼刮刀
rotary hydraulic expansion wall scraper
随钻扩眼工具
reaming while drilling tools