发明名称 |
Subsea vehicle assisted pipeline dewatering method |
摘要 |
The present invention is directed to a pig receiver used in a dewatering method for subsea pipelines. In the dewatering method a pig is placed in one end of the pipeline filled with water and a compressed gas is introduced behind the pig; in addition the water and pig are drawn by a subsea pump operated by a submersible vehicle (SV) operating near the sea floor to a pig receiver of the present invention. A feature of the pig receiver is a gas sensor that shuts the pump off when gas enters the receiver to prevent a gas (vapor) lock of the pump.
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申请公布号 |
US7708839(B2) |
申请公布日期 |
2010.05.04 |
申请号 |
US20050152217 |
申请日期 |
2005.06.15 |
申请人 |
VALKYRIE COMMISSIONING SERVICES, INC. |
发明人 |
YEMINGTON CHARLES R. |
分类号 |
B08B9/027 |
主分类号 |
B08B9/027 |
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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