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 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|