发明授权
- 专利标题: Matrix drill bits with back raked cutting elements
- 专利标题(中): 带背面切削元件的矩阵钻头
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申请号: US11687472申请日: 2007-03-16
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公开(公告)号: US07946362B2公开(公告)日: 2011-05-24
- 发明人: Nuno Da Silva , Valérie Sillen , Nicolas Luyckx
- 申请人: Nuno Da Silva , Valérie Sillen , Nicolas Luyckx
- 申请人地址: US TX Houston
- 专利权人: Halliburton Energy Services, Inc.
- 当前专利权人: Halliburton Energy Services, Inc.
- 当前专利权人地址: US TX Houston
- 代理机构: Baker Botts L.L.P.
- 主分类号: E21B10/54
- IPC分类号: E21B10/54
摘要:
A matrix drill bit and method of manufacturing a matrix bit having back raked cutting elements is disclosed. In one aspect, a matrix drill bit for well drilling includes a matrix bit body that has a front area in a direction of drilling and two or more diamond impregnated cutting blades protruding from the front area of the matrix bit body. The cutting blades each have a front external surface protruding from the front area of the matrix bit body and present a plurality of back raked downhole interface surfaces in the direction of drilling. The downhole interface surfaces span a leading face and a trailing face where the leading face extends to a first height and the trailing face extends to a second height and the first height is greater than the second height.
公开/授权文献
- US20070215389A1 Matrix Drill Bits With Back Raked Cutting Elements 公开/授权日:2007-09-20
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