| 发明名称 |
External Jet Pump for Dual Gradient Drilling |
| 摘要 |
An apparatus comprises a jet pump assembly affixed to a riser string and to a blowout preventer. The jet pump assembly comprises a conduit and a sealing assembly configured to accelerate a drilling fluid's return flow by a power fluid delivered by an umbilical connected to the conduit. |
| 申请公布号 |
US2011278014(A1) |
申请公布日期 |
2011.11.17 |
| 申请号 |
US20100778342 |
申请日期 |
2010.05.12 |
| 申请人 |
HUGHES WILLIAM JAMES;MILLER JACK EVERETT |
发明人 |
HUGHES WILLIAM JAMES;MILLER JACK EVERETT |
| 分类号 |
E21B7/12;E21B17/01;E21B21/00;E21B43/01 |
主分类号 |
E21B7/12 |
| 代理机构 |
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代理人 |
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