发明名称 Drill bit for horizontal directional drilling
摘要 A bit body for a drill bit for horizontal directional drilling includes a pair of legs and a small wedge member disposed between the pair of legs. A roller cone is rotatably mounted to each bearing shaft extending from a respective leg. The roller cones support full coverage cutting structures. A center jet nozzle is configured to direct drilling fluid between the pair of roller cones. A stabilizer member maintains an upright drilling position of the drill bit within the borehole.
申请公布号 AU2015213772(A1) 申请公布日期 2016.07.28
申请号 AU20150213772 申请日期 2015.02.06
申请人 VAREL INTERNATIONAL IND., L.P. 发明人 HARRINGTON, DAVID MICHEL;KING, WILLIAM W.;MAURSTAD, CARY ANDREW
分类号 E21B10/08;E21B10/18;E21B10/62 主分类号 E21B10/08
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