发明申请
- 专利标题： HYBRID DRILL BIT WITH HIGH PILOT-TO-JOURNAL DIAMETER RATIO
- 专利标题（中）： 混合钻头与高引导到日期直径比
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申请号： US12481410申请日： 2009-06-09
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公开(公告)号： US20100155146A1公开(公告)日： 2010-06-24
- 发明人: Don Q. Nguyen , Anton F. Zahradnik , Rudolf C. Pessier
- 申请人： Don Q. Nguyen , Anton F. Zahradnik , Rudolf C. Pessier
- 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
- 主分类号： E21B10/14
- IPC分类号： E21B10/14 ; E21B10/00
摘要：
The invention disclosed and taught herein is directed to an improved hybrid drill bit and associated elements having at least two rolling cutters, each rotatable around separate spindles on the bit, and at least one fixed blade. The improved drill bit expands the pilot pin to journal diameter ratio within the body of the rolling cutter, but within the confines of the allowable space of the rolling cutter.
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