发明名称 |
ELECTRO-HYDRAULIC PROCESS CONTROL SYSTEM AND METHOD |
摘要 |
A hybrid process control system features electrical transmission of power to a sub-sea hydraulic power unit (11), which in turn provides hydraulic power for control of hydraulic actuators. A circulation system using small bore tubing in the umbilical cord (3) in combination with a traditional topside hydraulic power unit (1) provides for active control of hydraulic fluid quality with respect to contamination caused by the sub-sea hydraulic actuators, especially process gas from down hole safety valves. Thus a more economical power transmission is achieved without reduction of fluid quality, which is essential to system integrity and reliability. Also a significant enhancement of power transmission without a dramatic increase in the size of hydraulic supply and return lines is achieved. Fluid environmental issues are reduced to a negligible aspect.
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申请公布号 |
WO2006059223(A3) |
申请公布日期 |
2006.07.27 |
申请号 |
WO2005IB03659 |
申请日期 |
2005.12.02 |
申请人 |
VETCO AIBEL AS;GRIMSETH, TOM;BORCHGREVINK, CHRISTIAN |
发明人 |
GRIMSETH, TOM;BORCHGREVINK, CHRISTIAN |
分类号 |
E21B33/035;E21B34/10 |
主分类号 |
E21B33/035 |
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地址 |
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