发明授权
- 专利标题: Fatigue resistant coiled tubing
- 专利标题(中): 耐疲劳油管
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申请号: US13804790申请日: 2013-03-14
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公开(公告)号: US09200730B2公开(公告)日: 2015-12-01
- 发明人: Sebastian Cravero , Martin Valdez , Jorge Mitre , Hugo Alejandro Ernst , Ricardo Schifini Gladchtein
- 申请人: Tenaris Coiled Tubes, LLC
- 申请人地址: US TX Houston
- 专利权人: TENARIS COILED TUBES, LLC
- 当前专利权人: TENARIS COILED TUBES, LLC
- 当前专利权人地址: US TX Houston
- 代理机构: Fish & Richardson P.C.
- 主分类号: F16L9/16
- IPC分类号: F16L9/16 ; F16L9/02 ; B21C37/08 ; B21C47/24 ; B23K31/02 ; E21B19/22
摘要:
The disclosed manufacture method for a length of tubing can produce a length of fatigue resistant tubing that has relatively high fatigue resistance and relatively low strip-to-strip welding length. The Fatigue resistance is calculated from experimental settings with controlled parameters and/or simulations reproducing similar material properties and loading conditions. A high fatigue resistance means certain product characteristics (e.g., low plasticization, low hydrostatic stress levels and free of imperfections welds) can be retained with an adequate bias weld design at low values after a specific test number of cyclic loading. The relatively low strip-to-strip welding length is an advantage for reducing probabilities of having cracks initiated and/or propagated at weld locations, where imperfections and localized differences of mechanical properties commonly cause failure. Low strip-to-strip welding length can also reduce the costs for welding.
公开/授权文献
- US20140262337A1 Fatigue Resistant Coiled Tubing 公开/授权日:2014-09-18
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