发明名称 |
DRILL BIT WITH A FORCE APPLICATION USING A MOTOR AND SCREW MECHANISM FOR CONTROLLING EXTENSION OF A PAD IN THE DRILL BIT |
摘要 |
A drill bit and method of drilling a wellbore. The drill bit includes a pad configured to extend and retract from a surface of the drill bit, and a force application device configured to extend and retract the pad. The force application device includes a screw driven by an electric motor that linearly moves a drive unit to extend and retract the pad from the drill bit surface. The drill bit may be conveyed by a drill string and the pad may be extended from the drill bit face to drill the wellbore. |
申请公布号 |
EP2880246(A1) |
申请公布日期 |
2015.06.10 |
申请号 |
EP20130825665 |
申请日期 |
2013.07.30 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
SCHWEFE, THORSTEN;RAZ, DAN;RINBERG, GREGORY |
分类号 |
E21B7/04;E21B4/00 |
主分类号 |
E21B7/04 |
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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