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基本信息:
- 专利标题: Tools for underground formations
- 专利标题(中):地下地层的工具
- 申请号:EP82300578.0 申请日:1982-02-05
- 公开(公告)号:EP0058061A2 公开(公告)日:1982-08-18
- 发明人: Fuller, John Michael
- 申请人: DRILLING & SERVICE U.K. LIMITED
- 申请人地址: Stroud Industrial Estate Oldends Lane Stonehouse, Gloucestershire GB
- 专利权人: DRILLING & SERVICE U.K. LIMITED
- 当前专利权人: DRILLING & SERVICE U.K. LIMITED
- 当前专利权人地址: Stroud Industrial Estate Oldends Lane Stonehouse, Gloucestershire GB
- 代理机构: Carter, Gerald
- 优先权: GB8103820 19810207; GB8104537 19810213
- 主分类号: E21B10/26
- IPC分类号: E21B10/26 ; E21B10/46 ; E21B10/42 ; E21B7/10
摘要:
A tool for an underground formation e.g. an eccentric hole opener, has an eccentric portion the end face of which has cutting elements, preferably poly-crystalline diamond compacts. According to the invention the elements are distributed about the end face in an arrangement to reduce the imbalance in horizontal cutting forces caused by the eccentricity of the tool.
摘要(中):
一种用于地下地层的工具,例如 偏心开孔器具有偏心部分,偏心部分的端面具有切割元件,优选为多晶金刚石压块。 根据本发明,元件围绕端面分布在一个布置中,以减少由工具的偏心引起的水平切割力的不平衡。
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 |
--------E21B10/26 | .带导向部件的钻头,即带前引牙轮的钻头;扩孔钻头,例如,扩孔器 |