发明授权
- 专利标题: Rotary cone drill bit with integral stabilizers
- 专利标题(中): 带集成稳定器的旋转锥钻头
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申请号: US675626申请日: 1996-07-03
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公开(公告)号: US5755297A公开(公告)日: 1998-05-26
- 发明人: John Randolph Young , Norman Gair Mitchell , Paul Ronald Riederer , Alan Dee Huffstutler , Harry Morales Campos, Jr.
- 申请人: John Randolph Young , Norman Gair Mitchell , Paul Ronald Riederer , Alan Dee Huffstutler , Harry Morales Campos, Jr.
- 申请人地址: TX Dallas
- 专利权人: Dresser Industries, Inc.
- 当前专利权人: Dresser Industries, Inc.
- 当前专利权人地址: TX Dallas
- 主分类号: E21B10/08
- IPC分类号: E21B10/08 ; E21B10/18 ; E21B10/44 ; E21B17/10 ; E21B10/50
摘要:
A rotary cone drill bit for forming a borehole having a bit body with an upper end portion adapted for connection to a drill string. A number of support arms extend from the bit body. Each support arm has an exterior surface with a stabilizer pad formed as an integral part thereof. A number of cutter cone assemblies equal to the number of support arms are rotatably mounted on respective support arms and project generally downwardly and inwardly from each support arm. A ramp may also be formed on the exterior surface of the support arm as an integral part thereof. Both the stabilizer pad and the ramp preferably have surfaces inclined at an angle from a leading edge of the support arm toward a trailing edge of the support arm such that a fluid flow channel is formed therebetween to direct drilling fluids and cuttings to flow upward in the borehole.
公开/授权文献
- US5106148A Front body structure of automotive vehicle 公开/授权日:1992-04-21
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