发明名称 |
ONE TRIP WINDOW CUTTING TOOL METHOD AND APPARATUS |
摘要 |
The present invention pertains to a device and method for drilling a secondary or deflection hole from a cased drill hole in underground rock or geologic formations. The device disclosed herein includes a deflection wedge unit mountable via a packer in the drill hole and a pilot cutting tool, all mountable to a drill string. A deflection guide actuated by deflection ramp on the deflection wedge unit initiates the deflection drilling process.
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申请公布号 |
US5109924(A) |
申请公布日期 |
1992.05.05 |
申请号 |
US19900628235 |
申请日期 |
1990.12.17 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
JUERGENS, RAINER;KREHL, DIETMAR |
分类号 |
E21B7/06;E21B7/08;E21B29/06 |
主分类号 |
E21B7/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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