发明名称 |
Reverse section milling method and apparatus |
摘要 |
A method and apparatus for milling a section of casing in an upward direction, utilizing a downhole hydraulic thrusting mechanism for pulling a section mill upwardly. A downhole motor and torque anchor can be used to rotate the section mill, or the mill can be rotated by a work string. A stabilizer above the section mill can be used to stabilize the mill relative to the casing being milled. A spiral auger below the section mill can be used to move the cuttings downwardly.
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申请公布号 |
US6679328(B2) |
申请公布日期 |
2004.01.20 |
申请号 |
US20020123077 |
申请日期 |
2002.04.11 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
DAVIS JOHN PHILLIP;LYNDE GERALD D. |
分类号 |
E21B10/32;E21B29/00;E21B47/09;(IPC1-7):E21B29/00;E21B29/06 |
主分类号 |
E21B10/32 |
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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