发明名称 |
Retrievable packer having a positively operated support ring |
摘要 |
A retrievable packer (50) for establishing a sealing and gripping engagement between a tubing string and a well casing (34) disposed in a wellbore is disclosed. The retrievable packer (50) comprises a collet member (64) that is slidably disposed about a packer mandrel (52). The collet member (64) has a first operating position wherein the collet member (64) applies an axial force on a support ring (76) to positively position the support ring (76) at least partially between a first slip wedge (90) and the packer mandrel (52) to set a seal assembly (96, 98, 100). In addition, the collet member (64) has a second operating position wherein the collet member (64) applies an axial force on a slip assembly (80) to set the slip assembly (80).
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申请公布号 |
US6691788(B1) |
申请公布日期 |
2004.02.17 |
申请号 |
US20020202694 |
申请日期 |
2002.07.25 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
DEARING DAVID G. |
分类号 |
E21B33/129;(IPC1-7):E21B23/01 |
主分类号 |
E21B33/129 |
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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