发明名称 |
Lockable motor assembly for use in a well bore |
摘要 |
A lockable motor assembly for use in a well bore comprises a PDM motor having a rotor and a stator. A locking member has a splined projection which is received within a splined recess of the rotor and external splines which mate with splines provided on a sub connected to the stator. The components are held in this configuration by a shear ring until the fluid pressure within a chamber defined between the locking member and the sub is sufficient to cause the shear ring to shear. The locking member may then move out of the engagement with the rotor to free the motor for operation. The locking member is held in this position by a ratchet mechanism.
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申请公布号 |
US2004089478(A1) |
申请公布日期 |
2004.05.13 |
申请号 |
US20030694069 |
申请日期 |
2003.10.27 |
申请人 |
SMITH INTERNATIONAL, INC. |
发明人 |
CRUICKSHANK BRIAN;BOYCE JOHN PATRICK;CATON CHRISTOPHER JOHN;MCGARIAN BRUCE |
分类号 |
E21B4/02;E21B7/06;(IPC1-7):E21B29/06 |
主分类号 |
E21B4/02 |
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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