发明名称 |
Cementing swivel and retainer arm assembly and method |
摘要 |
A cementing swivel includes an outer stationary member having a cement port, an inner rotating member with a bore therethrough, and a torque indicating member coupled to the outer stationary member and configured to provide a visual indication that a predetermined torque load has been reached.
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申请公布号 |
US8491013(B2) |
申请公布日期 |
2013.07.23 |
申请号 |
US20070854283 |
申请日期 |
2007.09.12 |
申请人 |
PEER RICHARD D.;COSTO, JR. ROBERT J.;SMITH INTERNATIONAL, INC. |
发明人 |
PEER RICHARD D.;COSTO, JR. ROBERT J. |
分类号 |
E21B33/05;F16L27/00 |
主分类号 |
E21B33/05 |
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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