发明名称 |
Dynamic Inflatable Sealing Device |
摘要 |
A dynamic inflatable sealing device for maintaining the pressure within an inflatable element at least substantially equal to the pressure in the annulus to maintain the inflatable element in a sealing position. The dynamic sealing device includes an inflatable element forming an internal chamber, the inflatable element expandable to sealing engagement with a wall, and a dynamic valve mechanism in operational connection between the internal chamber and exterior of the internal chamber substantially communicating the pressure external of the inflatable element to the internal chamber.
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申请公布号 |
US2007056749(A1) |
申请公布日期 |
2007.03.15 |
申请号 |
US20050162559 |
申请日期 |
2005.09.14 |
申请人 |
SCHLUMBERGER TECHNOLOGY CORPORATION |
发明人 |
GAMBIER PHILIPPE;GARCIA JOSE F.;WHITSITT JOHN |
分类号 |
E21B33/127 |
主分类号 |
E21B33/127 |
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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