发明授权
- 专利标题： Cutting element attached to downhole fixed bladed bit at a positive rake angle
- 专利标题（中）： 切割元件以正前角连接到井下固定刀片位
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申请号： US12619305申请日： 2009-11-16
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公开(公告)号： US08567532B2公开(公告)日： 2013-10-29
- 发明人: David R. Hall , Ronald B. Crockett , Marcus Skeem , Francis Leany , Casey Webb
- 申请人： David R. Hall , Ronald B. Crockett , Marcus Skeem , Francis Leany , Casey Webb
- 申请人地址： US TX Sugar Land
- 专利权人： Schlumberger Technology Corporation
- 当前专利权人： Schlumberger Technology Corporation
- 当前专利权人地址： US TX Sugar Land
- 代理机构： Osha Liang LLP
- 主分类号： E21B10/43
- IPC分类号： E21B10/43
摘要：
A downhole fixed bladed bit comprises a working surface comprising a plurality of blades converging at a center of the working surface and diverging towards a gauge of the bit, at least on blade comprising a cutting element comprising a superhard material bonded to a cemented metal carbide substrate at a non-planer interface, the cutting element being positioned at a positive rake angle, and the superhard material comprising a substantially conical geometry with an apex comprising a curvature.
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