发明名称 |
WELLBORE PIPE CENTRALIZER HAVING INCREASED RESTORING FORCE AND SELF-SEALING CAPABILITY. |
摘要 |
<p>A centralizer includes a first stop collar configured to be affixed to an exterior surface of a pipe. A second stop collar is spaced apart from the first stop collar and is configured to be affixed to the exterior surface of the pipe. A plurality of circumferentially spaced apart longitudinal spacers is included and each is coupled at each longitudinal end to one of the stop collars. A first plurality of circumferentially spaced apart bow springs is each coupled at one longitudinal end thereof to the first stop collar and at an opposite longitudinal end thereof to a first floating collar disposed between the first and second stop collars. A second plurality of circumferentially spaced apart bow springs is each coupled at one longitudinal end thereof to the second stop collar and at an opposite longitudinal end thereof to a second floating collar disposed between the first and second stop collars.</p> |
申请公布号 |
MX2010007158(A) |
申请公布日期 |
2013.03.25 |
申请号 |
MX20100007158 |
申请日期 |
2008.12.24 |
申请人 |
PRAD RESEARCH AND DEVELOPMENT LIMITED.* |
发明人 |
SEHSAH, OSSAMA, RAMZI |
分类号 |
E21B17/10 |
主分类号 |
E21B17/10 |
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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