| 发明名称 |
MARINE RISER AND METHOD FOR MAKING |
| 摘要 |
<p>A method for forming an aluminum alloy riser includes forming a riser tube from an aluminum alloy. At least one flanged coupling is formed from the aluminum alloy. The flanged coupling is friction stir welded to one end of the tube. In one embodiment, an end of the tube is radially plastically expanded prior to welding the flange to the one end of the tube.</p> |
| 申请公布号 |
EP2021576(A2) |
申请公布日期 |
2009.02.11 |
| 申请号 |
EP20070761600 |
申请日期 |
2007.04.30 |
| 申请人 |
NOBLE DRILLING SERVICES, INC. |
发明人 |
DEUL, HANS H.J.;PROSSER, THOMAS E. |
| 分类号 |
E21B17/01 |
主分类号 |
E21B17/01 |
| 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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