发明名称 |
Annulus for electrically heated pipe-in-pipe subsea pipeline |
摘要 |
Apparatus and method for electrically heating a segment of a subsea pipeline are provided. The annulus between the pipes electrically isolates the pipes, but at the ends of the segment the concentric pipes are electrically connected. The inner pipe may be thermally insulated. Electrically insulating water stops are provided to act as flood control barriers in the event the outer pipe is breached. Collars on seals around the water stops may help avoid electrical shorts and packets of super-absorbent may be in place to further reduce the risk of electrical faults.
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申请公布号 |
US2004060693(A1) |
申请公布日期 |
2004.04.01 |
申请号 |
US20010910696 |
申请日期 |
2001.07.20 |
申请人 |
BASS RONALD MARSHALL;NEWBERRY BYRON LEE;LANGNER CARL GOTTLIEB |
发明人 |
BASS RONALD MARSHALL;NEWBERRY BYRON LEE;LANGNER CARL GOTTLIEB |
分类号 |
E21B36/00;E21B36/04;(IPC1-7):E21B36/00 |
主分类号 |
E21B36/00 |
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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