发明名称 |
Multi power launch system for pressure differential device |
摘要 |
An injection mandrel may include a valve controlling the flow of the injection fluid. A valve actuator operatively connected to the valve sequentially generates a first predetermined pressure and a larger second predetermined pressure in the valve. The valve actuator generates the second predetermined pressure in the valve in response to a predetermined change in a pressure at an annulus surrounding the mandrel. |
申请公布号 |
AU2014281697(B2) |
申请公布日期 |
2017.02.16 |
申请号 |
AU20140281697 |
申请日期 |
2014.06.17 |
申请人 |
Baker Hughes Incorporated |
发明人 |
He, Zhe Y. |
分类号 |
E21B43/12;E21B21/08;E21B43/16 |
主分类号 |
E21B43/12 |
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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