发明名称 |
Internally latched subsea wellhead tieback connector |
摘要 |
A subsea wellhead tieback connector operatively used to connect to a marine riser pipe or a well conductor in a manner that that will not unthread or unloosen the joints of the riser pipe being unlocked. The tieback connector operates with a novel internal latching mechanism having a hydraulic piston, an inner body that stretches and deflects in a unique manner resulting in compression spring forces at two locations, an expanding lock ring, a threaded adjustment ring, and a reaction ring. During operation the tieback connector creates an enhanced mechanical advantage to originate a required pre-load force without the necessity of having to generate a large hydraulic force that would otherwise be needed.
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申请公布号 |
US5775427(A) |
申请公布日期 |
1998.07.07 |
申请号 |
US19960748700 |
申请日期 |
1996.11.13 |
申请人 |
FMC CORPORATION |
发明人 |
SKEELS, HAROLD B.;KOLEILAT, BASHIR M.;SINGEETHAM, SHIVA |
分类号 |
E21B33/038;(IPC1-7):E21B43/013 |
主分类号 |
E21B33/038 |
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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