基本信息:
- 专利标题： FULLY SEALED DOWNHOLE HAMMER
- 申请号：EP22208586.2 申请日：2022-11-21
- 公开(公告)号：EP4372201A1 公开(公告)日：2024-05-22
- 发明人： Bruandet, Olivier
- 申请人： Sandvik Mining and Construction Oy
- 申请人地址： FI 33330 Tampere Pihtisulunkatu 9
- 专利权人： Sandvik Mining and Construction Oy
- 当前专利权人： Sandvik Mining and Construction Oy
- 当前专利权人地址： FI 33330 Tampere Pihtisulunkatu 9
- 代理机构： Sandvik
- 主分类号： E21B10/18
- IPC分类号： E21B10/18 ; E21B10/38 ; E21B10/60
摘要：
A down the hole drilling assembly comprising a drill bit, a shank, a driver sub, a flushing passage sub, at least one flushing channel, a sealing element arranged in the flushing passage and extending radially from the outer surface of the shank to the inner surface of the driver sub, wherein the flushing passage and the at least one flushing channel are configured to allow a flow of fluid from the flushing passage to the at least one flushing channel in a flow direction of the fluid, wherein the sealing element is positioned above an inlet port of the at least one flushing channel along the flow direction and wherein the sealing element is configured to prevent a flow of fluid in a direction opposite to the flow direction.
IPC结构图谱:
| E | 固定建筑物 |
| --E21 | 土层或岩石的钻进；采矿 |
| ----E21B | 土层或岩石的钻进；从井中开采油、气、水、可溶解或可熔化物质或矿物泥浆 |
| ------E21B10/00 | 钻头 |
| --------E21B10/02 | .岩心钻头 |
| ----------E21B10/18 | ..以钻井液导管或喷嘴为特征的 |