发明名称 |
TELESCOPIC JOINT MINI CONTROL PANEL |
摘要 |
<p>A method and apparatus for determining and reacting to an upper packer failure in a riser slip joint. An upper packer failure is determined by comparing pressures at two points in the upper packer pressure circuit using a differential pressure valve. In the event of a failure of the upper packer, a secondary pressure source is used to energize a lower packer in the riser slip joint.</p> |
申请公布号 |
WO2009086323(A1) |
申请公布日期 |
2009.07.09 |
申请号 |
WO2008US88057 |
申请日期 |
2008.12.22 |
申请人 |
TRANSOCEAN SEDCO FOREX VENTURES LIMITED;RODGER, BRADLEY, RAY |
发明人 |
RODGER, BRADLEY, RAY |
分类号 |
E21B47/00 |
主分类号 |
E21B47/00 |
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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