Invention Grant
- Patent Title: Method and apparatus for removing casing
- Patent Title (中): 去除套管的方法和装置
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Application No.: US12624785Application Date: 2009-11-24
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Publication No.: US08047277B1Publication Date: 2011-11-01
- Inventor: Sandra Remedies , John Rucker , Richard Blanchard , Donald D. Deslatte , Kenneth J. Cahill
- Applicant: Sandra Remedies , John Rucker , Richard Blanchard , Donald D. Deslatte , Kenneth J. Cahill
- Applicant Address: US LA LaPlace
- Assignee: Hudson Services, Inc.
- Current Assignee: Hudson Services, Inc.
- Current Assignee Address: US LA LaPlace
- Agency: Garvey, Smith, Nehrbass & North, L.L.C.
- Agent Brett A. North
- Main IPC: E21B29/08
- IPC: E21B29/08 ; E21B19/16
Abstract:
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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