发明授权
- 专利标题: Expandable retrievable bridge plug
- 专利标题(中): 可扩展的可检索桥塞
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申请号: US29325申请日: 1998-03-03
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公开(公告)号: US6142227A公开(公告)日: 2000-11-07
- 发明人: Epen Hiorth , Frode Andersen , Dag Ravn Pedersen
- 申请人: Epen Hiorth , Frode Andersen , Dag Ravn Pedersen
- 申请人地址: NOX Trondheim NOX Forus
- 专利权人: Bronnteknologiutvikling AS,Maritime Well Service AS
- 当前专利权人: Bronnteknologiutvikling AS,Maritime Well Service AS
- 当前专利权人地址: NOX Trondheim NOX Forus
- 优先权: NOX953546 19950908
- 主分类号: E21B33/12
- IPC分类号: E21B33/12 ; E21B33/129 ; E21B33/128
摘要:
A bridge plug (1) for use in a casing (7), for example in oil and/or gas wells, comprising a packing element (2) of a resilient material is disclosed. The packing element (2) is adapted for at impact from a running tool to expand from a first diameter, to a second diameter that is greater than the first diameter which corresponds to the inner diameter of the casing that is to be sealed. The packing element (2) is divided in zones forming at least one expandable sealing packing element (34, 35) and at least one expandable support packing element (31, 32, 33), where the support packing elements (31, 32, 33) are expandable to a smaller diameter than the sealing packing elements (34, 35). The bridge plug (1) is further comprised of an anchoring means (3) that is provided for holding the bridge plug (1) in its place in the casing by a friction surface (28) that is pressed radially against the casing (7).
公开/授权文献
- USD368807S Picnic table 公开/授权日:1996-04-16
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