发明名称 |
Subsea cementing plug system with plug launching tool |
摘要 |
A subsea cementing system that includes a first wiper plug having a central bore releasably connected to a launching mandrel, and a second wiper plug having a central bore releasably connected to the first wiper plug. The system includes a first dart that is adapted to seal the central bore of the second wiper plug. A first increase in pressure releases the second wiper plug from the first wiper plug and a second increase in pressure breaks a burst disc of the first dart allowing cement to flow past the second wiper plug. A second wiper dart is adapted to seal the central bore of the first wiper plug. A third increase in pressure releases the first wiper plug from the launching mandrel. A fourth increase in pressure releases a sealing member from the second dart, which is adapted to seal the central bore of the second wiper plug. |
申请公布号 |
US8201634(B2) |
申请公布日期 |
2012.06.19 |
申请号 |
US20090469370 |
申请日期 |
2009.05.20 |
申请人 |
LAUREL DAVID FERNANDO;KOENIG KURT RANDALL;BAKER HUGHES INCORPORATED |
发明人 |
LAUREL DAVID FERNANDO;KOENIG KURT RANDALL |
分类号 |
E21B33/13;E21B33/16 |
主分类号 |
E21B33/13 |
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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