发明授权
- 专利标题: Chamfered edge gage cutters and drill bits so equipped
- 专利标题(中): 倒角边缘切割机,钻头如此装备,以及切割机制造方法
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申请号: US12198246申请日: 2008-08-26
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公开(公告)号: US08061456B2公开(公告)日: 2011-11-22
- 发明人: Suresh G. Patel , Danny E. Scott , L. Allen Sinor
- 申请人: Suresh G. Patel , Danny E. Scott , L. Allen Sinor
- 申请人地址: US TX Houston
- 专利权人: Baker Hughes Incorporated
- 当前专利权人: Baker Hughes Incorporated
- 当前专利权人地址: US TX Houston
- 代理机构: TraskBritt
- 主分类号: E21B10/52
- IPC分类号: E21B10/52
摘要:
A cutting element for an earth boring bit, may include a PDC layer having a flat on a periphery thereof, the flat terminating longitudinally at an edge spaced from a cutting face of the PDC layer. A chamfer adjacent to the cutting face desirably has a length that exceeds its depth. A cutting element may additionally include a chamfer along the entire circumference, multiple step-wise, radially adjacent chamfers, and multiple circumferentially spaced portions of the uppermost radius of the PDC layer of the cutting element that each includes a chamfer with an associated flat. Additionally, a cutting element may include a flat terminating at a radial edge with the cutting face of a PDC layer.
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