发明名称 |
Foringsrorkrone, boresammenstillinger og fremgangsmater til bruk ved forming av bronnboringer med ekspanderbart foringsror |
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. |
申请公布号 |
NO20111590(A1) |
申请公布日期 |
2012.01.06 |
申请号 |
NO20110001590 |
申请日期 |
2011.11.21 |
申请人 |
BAKER HUGHES INC |
发明人 |
MARVEL TIM KING;MEINERS MATTHEW J;EVANS JOHN G |
分类号 |
E21B7/28;E21B10/43;E21B10/567 |
主分类号 |
E21B7/28 |
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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