发明申请
US20100326729A1 CASING BITS, DRILLING ASSEMBLIES, AND METHODS FOR USE IN FORMING WELLBORES WITH EXPANDABLE CASING
审中-公开
铸造钻头，钻孔组件和用于形成具有可扩展壳体的井筒的方法
- 专利标题： CASING BITS, DRILLING ASSEMBLIES, AND METHODS FOR USE IN FORMING WELLBORES WITH EXPANDABLE CASING
- 专利标题（中）： 铸造钻头，钻孔组件和用于形成具有可扩展壳体的井筒的方法
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申请号： US12771504申请日： 2010-04-30
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公开(公告)号： US20100326729A1公开(公告)日： 2010-12-30
- 发明人: Timothy K. Marvel , Matthew J. Meiners , John G. Evans
- 申请人： Timothy K. Marvel , Matthew J. Meiners , John G. Evans
- 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： E21B7/00
- IPC分类号： E21B7/00 ; E21B17/14 ; E21B17/10 ; B21K5/04 ; B23P11/00
摘要：
Casing bits include an expander for enlarging an inner diameter of expandable casing at least partially disposed within a body of the casing bits. Drilling assemblies include a casing bit attached to an end of expandable casing, and an expander disposed in proximity to the casing bit and a distal end of the expandable casing. Methods of forming casing bits include positioning an expander in proximity to a body of a casing bit. Methods of forming drilling assemblies include positioning an expander in proximity to a body of a casing bit and a distal end of expandable casing, and attaching the casing bit to the end of the expandable casing. Methods of casing a wellbore include one or both of drilling and reaming a wellbore using a casing bit attached to a distal end of expandable casing, and forcing an expander through the expandable casing.
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