发明公开
- 专利标题: LOW -CLEARANCE CENTRALIZER AND METHOD OF MAKING CENTRALIZER
- 专利标题(中): 根据上述制造中心设备低GAME和方法中心设备
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申请号: EP08755188.3申请日: 2008-05-08
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公开(公告)号: EP2158378A1公开(公告)日: 2010-03-03
- 发明人: BUYTAERT, Jean , MILLER, Eugene, Edward , YOUNG, Jimmy, Mack
- 申请人: Frank's International, Inc.
- 申请人地址: 10260 Westheimer Road, Suite 700 Houston, TX 77042 US
- 专利权人: Frank's International, Inc.
- 当前专利权人: Frank's International, Inc.
- 当前专利权人地址: 10260 Westheimer Road, Suite 700 Houston, TX 77042 US
- 代理机构: Meacock, Andrew
- 优先权: US749544 20070516
- 国际公布: WO2008144243 20081127
- 主分类号: E21B17/10
- IPC分类号: E21B17/10
摘要:
A bow-spring centralizer (6) includes bow springs (34), moving collars (20) secured to each end of each bow spring, and interlocked stop collars (10). Extendable collars (8) may each be formed of a moving collar (20) movably interlocked with a stop collar (10). The centralizer (6) may be formed from a tube cut using a laser to create two extendable collars coupled by bow springs. Each extendable collar may include heads (12) integrally formed on extensions (26) protruding from a collar (stop collar or moving collar). The heads may be generally rectangular, arrow, or teardrop-shaped head or some other shape. Each head may be slidably captured within a chamber (24) on the interlocked collar (moving collar or stop collar). The extensions of each interlocked tubular member define the outer walls of the chamber in which a head of the interlocked tubular member is slidably captured.
公开/授权文献
- EP2158378B1 LOW -CLEARANCE CENTRALIZER AND METHOD OF MAKING CENTRALIZER 公开/授权日:2011-12-28
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