发明名称 |
Method and apparatus for removing casing |
摘要 |
A method and apparatus for removing a string of casing from a well bore. The method and apparatus include a plurality of drill bits substantially aligned with each other for drilling a plurality of holes in the string of casing. The plurality of holes can be used to lift the string in casing from the well bore via a series of incremental casing sections.
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申请公布号 |
US7621321(B1) |
申请公布日期 |
2009.11.24 |
申请号 |
US20060390027 |
申请日期 |
2006.03.24 |
申请人 |
HUDSON SERVICES, INC. |
发明人 |
REMEDIES SANDRA;RUCKER JOHN;BLANCHARD RICHARD;DESLATTE DONALD D.;CAHILL KENNETH |
分类号 |
E21B29/08;E21B19/16 |
主分类号 |
E21B29/08 |
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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